// This class Defines the Geometry for the ITS services and support cones
// outside of the ceneteral volume (except for the Ceneteral support
// cylinders. Other classes define the rest of the ITS. Specificaly the ITS
-// The SSD support cone, SSD Support centeral cylinder, SDD support cone,
-// The SDD cupport centeral cylinder, the SPD Thermal Sheald, The supports
+// The SSD support cone, SSD Support central cylinder, SDD support cone,
+// The SDD cupport central cylinder, the SPD Thermal Sheald, The supports
// and cable trays on both the RB26 (muon dump) and RB24 sides, and all of
// the cabling from the ladders/stave ends out past the TPC.
//
#include <TCanvas.h>
#include <TPolyLine.h>
#include <TPolyMarker.h>
+
// Root Geometry includes
#include <TGeoVolume.h>
+#include <TGeoPcon.h>
+#include <TGeoCone.h>
#include <TGeoTube.h> // contains TGeoTubeSeg
#include <TGeoArb8.h>
#include <TGeoEltu.h>
#include <TGeoMaterial.h>
#include <TGeoMedium.h>
#include <TGeoCompositeShape.h>
+
// AliRoot includes
+#include "AliLog.h"
#include "AliMagF.h"
#include "AliRun.h"
+
// Declaration file
#include "AliITSv11GeometrySPD.h"
ClassImp(AliITSv11GeometrySPD)
-#define SQ(A) (A)*(A)
+//#define SQ(A) (A)*(A)
-//______________________________________________________________________
+AliITSv11GeometrySPD::AliITSv11GeometrySPD(Double_t gap) :
+ AliITSv11Geometry(), fAlignmentGap(gap),
+ fSPDsectorX0(0), fSPDsectorY0(0), fSPDsectorX1(0), fSPDsectorY1(0)
+{
+ //
+ // Default constructor.
+ // This does not initialize anything and is provided just for completeness.
+ // It is recommended to use the other one.
+ // The alignment gap is specified as argument (default = 0.0075 cm).
+ //
+
+ Int_t i = 0;
+ for (i = 0; i < 6; i++) fAddStave[i] = kTRUE;
+}
+//
+//__________________________________________________________________________________________
+AliITSv11GeometrySPD::AliITSv11GeometrySPD(Int_t debug, Double_t gap):
+ AliITSv11Geometry(debug), fAlignmentGap(gap),
+ fSPDsectorX0(0), fSPDsectorY0(0), fSPDsectorX1(0), fSPDsectorY1(0)
+{
+ //
+ // Constructor with debug setting argument
+ // This is the constructor which is recommended to be used.
+ // It sets a debug level, and initializes the name of the object.
+ // The alignment gap is specified as argument (default = 0.0075 cm).
+ //
+
+ Int_t i = 0;
+ for (i = 0; i < 6; i++) fAddStave[i] = kTRUE;
+}
+//
+//__________________________________________________________________________________________
+TGeoMedium* AliITSv11GeometrySPD::GetMedium(const char* mediumName, TGeoManager *mgr) const
+{
+ //
+ // This function is used to recovery any medium
+ // used to build the geometry volumes.
+ // If the required medium does not exists,
+ // a NULL pointer is returned, and an error message is written.
+ //
+
+ Char_t itsMediumName[30];
+ sprintf(itsMediumName, "ITS_%s", mediumName);
+ TGeoMedium* medium = mgr->GetMedium(itsMediumName);
+ if (!medium) AliError(Form("Medium <%s> not found", mediumName));
+
+ return medium;
+}
+//
+//__________________________________________________________________________________________
Int_t AliITSv11GeometrySPD::CreateSPDCentralMaterials(Int_t &medOffset, Int_t &matOffset) const
{
- // Define the specific materials used for the ITS SPD central
- // detectors. Note, These are the same old names. By the ALICE
- // naming convension, these should start out at ITS SPD ....
- // This data has been taken from AliITSvPPRasymmFMD::CreateMaterials().
- // Intputs:
- // Int_t &medOffset The starting number of the list of media
- // Int_t &matOffset The starting number of the list of Materials
- // Outputs:
- // Int_t &medOffset The ending number of the list of media
- // Int_t &matOffset The ending number of the list of Materials
- // Return:
- // the last material number used +1 (the next avaiable material number).
- //Begin_Html
- /*
- <img src="http://alice.pd.infn.it/latestdr/all-sections-module.ps"
- title="SPD Sector drawing with all cross sections defined">
- <p>The SPD Sector definition.
- <img src="http://alice.pd.infn.it/latestdr/assembly-10-modules.ps"
- titile="SPD All Sectors end view with thermal sheald">
- <p>The SPD all sector end view with thermal sheald.
- <img src="http://alice.pd.infn.it/latestdr/assembly.ps"
- title="SPD side view cross section">
- <p>SPD side view cross section with condes and thermal shealds.
- <img src="http://alice.pd.infn.it/latestdr/SECTION-A_A.jpg"
- title="Cross setion A-A"><p>Cross section A-A
- <img src="http://alice.pd.infn.it/latestdr/SECTION-B_B.jpg"
- title="Cross section B-B"><p>Cross section B-B
- <img src="http://alice.pd.infn.it/latestdr/SECTION-C_C.jpg"
- title-"Cross section C-C"><p>Cross section C-C
- <img src="http://alice.pd.infn.it/latestdr/SECTION-D_D.jpg"
- title="Cross section D-D"><p>Cross section D-D
- <img src="http://alice.pd.infn.it/latestdr/SECTION-F_F.jpg"
- title="Cross section F-F"><p>Cross section F-F
- <img src="http://alice.pd.infn.it/latestdr/SECTION-G_G.jpg"
- title="Cross section G-G"><p>Cross section G-G
- */
- //End_Html
- const Double_t ktmaxfd = 0.1*fgkDegree; // Degree
- const Double_t kstemax = 1.0*fgkcm; // cm
- const Double_t kdeemax = 0.1; // Fraction of particle's energy 0<deemax<=1
- const Double_t kepsil = 1.0E-4; //
- const Double_t kstmin = 0.0*fgkcm; // cm "Default value used"
- const Double_t ktmaxfdAir = 0.1*fgkDegree; // Degree
- const Double_t kstemaxAir = 1.0000E+00*fgkcm; // cm
- const Double_t kdeemaxAir = 0.1; //Fraction of particle's energy 0<deemax<=1
- const Double_t kepsilAir = 1.0E-4;//
- const Double_t kstminAir = 0.0*fgkcm; // cm "Default value used"
- const Double_t ktmaxfdSi = 0.1*fgkDegree; // .10000E+01; // Degree
- const Double_t kstemaxSi = 0.0075*fgkcm; // .10000E+01; // cm
- const Double_t kdeemaxSi = 0.1; // Fraction of particle's energy 0<deemax<=1
- const Double_t kepsilSi = 1.0E-4;//
- const Double_t kstminSi = 0.0*fgkcm; // cm "Default value used"
- //
- Int_t matindex=matOffset;
- Int_t medindex=medOffset;
- Double_t params[8]={8*0.0};
- TGeoMaterial *mat;
- TGeoMixture *mix;
- TGeoMedium *med;
- //
- Int_t ifield = (gAlice->Field()->Integ());
- Double_t fieldm = (gAlice->Field()->Max());
- params[1] = (Double_t) ifield;
- params[2] = fieldm;
- params[3] = ktmaxfdSi;
- params[4] = kstemaxSi;
- params[5] = kdeemaxSi;
- params[6] = kepsilSi;
- params[7] = kstminSi;
-
- mat = new TGeoMaterial("SI",28.086,14.0,2.33*fgkgcm3,
- TGeoMaterial::kMatStateSolid,25.0*fgkCelsius,
- 0.0*fgkPascal);
- mat->SetIndex(matindex);
- med = new TGeoMedium("SI",medindex++,mat,params);
- //med = new TGeoMedium("SI",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdSi,kstemaxSi,kdeemaxSi,kepsilSi,kstminSi);
- //
- mat = new TGeoMaterial("SPD SI CHIP",28.086,14.0,2.33*fgkgcm3,
- TGeoMaterial::kMatStateSolid,25.0*fgkCelsius,
- 0.0*fgkPascal);
- mat->SetIndex(matindex);
- med = new TGeoMedium("SPD SI CHIP",medindex++,mat,params);
- //med = new TGeoMedium("SPD SI CHIP",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdSi,kstemaxSi,kdeemaxSi,kepsilSi,kstminSi);
- //
- mat = new TGeoMaterial("SPD SI BUS",28.086,14.0,2.33*fgkgcm3,
- TGeoMaterial::kMatStateSolid,25.0*fgkCelsius,
- 0.0*fgkPascal);
- mat->SetIndex(matindex);
- med = new TGeoMedium("SPD SI BUS",medindex++,mat,params);
- //med = new TGeoMedium("SPD SI BUS",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdSi,kstemaxSi,kdeemaxSi,kepsilSi,kstminSi);
- //
- // Carbon fiber by fractional weight "C (M55J)"
- mix = new TGeoMixture("C (M55J)",4,1.9866*fgkgcm3);
- mix->SetIndex(matindex);
- // Carbon by fractional weight
- mix->DefineElement(0,12.0107,6.0,0.908508078);
- // Nitrogen by fractional weight
- mix->DefineElement(1,14.0067,7.0,0.010387573);
- // Oxigen by fractional weight
- mix->DefineElement(2,15.9994,8.0,0.055957585);
- // Hydrogen by fractional weight
- mix->DefineElement(3,1.00794,1.0,0.025146765);
- mix->SetPressure(0.0*fgkPascal);
- mix->SetTemperature(25.0*fgkCelsius);
- mix->SetState(TGeoMaterial::kMatStateSolid);
- params[3] = ktmaxfd;
- params[4] = kstemax;
- params[5] = kdeemax;
- params[6] = kepsil;
- params[7] = kstmin;
- med = new TGeoMedium("ITSspdCarbonFiber",medindex++,mix,params);
- //med = new TGeoMedium("ITSspdCarbonFiber",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfd,kstemax,kdeemax,kepsil,kstmin);
- //
- // Carbon fiber by fractional weight
- mix = new TGeoMixture("Air",4,1.20479E-3*fgkgcm3);
- mix->SetIndex(matindex);
- mix->DefineElement(0,12.0107,6.0,0.000124); // Carbon by fractional weight
- mix->DefineElement(1,14.0067,7.0,0.755267); // Nitrogen by fractional weight
- mix->DefineElement(2,15.9994,8.0,0.231781); // Oxigen by fractional weight
- mix->DefineElement(3,39.948,18.0,0.012827); // Argon by fractional weight
- mix->SetPressure(101325.0*fgkPascal); // 1 atmosphere
- mix->SetTemperature(25.0*fgkCelsius);
- mix->SetState(TGeoMaterial::kMatStateGas);
- params[3] = ktmaxfdAir;
- params[4] = kstemaxAir;
- params[5] = kdeemaxAir;
- params[6] = kepsilAir;
- params[7] = kstminAir;
- med = new TGeoMedium("ITSspdAir",medindex++,mix,params);
- //med = new TGeoMedium("ITSspdAir",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdAir,kstemaxAir,kdeemaxAir,kepsilAir,kstminAir);
- //
- // Carbon fiber by fractional weight
- mix = new TGeoMixture("INOX",9,8.03*fgkgcm3);
- mix->SetIndex(matindex);
- mix->DefineElement(0,12.0107, 6.0,0.0003); // Carbon by fractional weight
- mix->DefineElement(1,54.9380,25.0,0.02); // Iron by fractional weight
- mix->DefineElement(2,28.0855,14.0,0.01); // Sodium by fractional weight
- mix->DefineElement(3,30.9738,15.0,0.00045); // by fractional weight
- mix->DefineElement(4,32.066 ,16.0,0.0003); // by fractional weight
- mix->DefineElement(5,58.6928,28.0,0.12); // Nickel by fractional weight
- mix->DefineElement(6,55.9961,24.0,0.17); // by fractional weight
- mix->DefineElement(7,95.84 ,42.0,0.025); // by fractional weight
- mix->DefineElement(8,55.845 ,26.0,0.654); // by fractional weight
- mix->SetPressure(0.0*fgkPascal); //
- mix->SetTemperature(25.0*fgkCelsius);
- mix->SetState(TGeoMaterial::kMatStateSolid);
- params[3] = ktmaxfdAir;
- params[4] = kstemaxAir;
- params[5] = kdeemaxAir;
- params[6] = kepsilAir;
- params[7] = kstminAir;
- med = new TGeoMedium("ITSspdStainlessSteel",medindex++,mix,params);
- //med =new TGeoMedium("ITSspdStainlessSteel",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdAir,kstemaxAir,kdeemaxAir,kepsilAir,kstminAir);
- //
- // Carbon fiber by fractional weight
- mix->SetIndex(matindex);
- mix = new TGeoMixture("Freon",2,1.63*fgkgcm3);
- mix->DefineElement(0,12.0107,6.0,4); // Carbon by fractional weight
- mix->DefineElement(1,18.9984032,9.0,10); // Florine by fractional weight
- mix->SetPressure(101325.0*fgkPascal); // 1 atmosphere
- mix->SetTemperature(25.0*fgkCelsius);
- mix->SetState(TGeoMaterial::kMatStateLiquid);
- params[3] = ktmaxfdAir;
- params[4] = kstemaxAir;
- params[5] = kdeemaxAir;
- params[6] = kepsilAir;
- params[7] = kstminAir;
- med = new TGeoMedium("ITSspdCoolingFluid",medindex++,mix,params);
- //med = new TGeoMedium("ITSspdCoolingFluid",medindex++,matindex++,0,ifield,
- // fieldm,ktmaxfdAir,kstemaxAir,kdeemaxAir,kepsilAir,kstminAir);
- //
- medOffset = medindex;
- matOffset = matindex;
- return matOffset;
+ //
+ // Define the specific materials used for the ITS SPD central detectors.
+ // ---
+ // NOTE: These are the same old names.
+ // By the ALICE naming conventions, they start with "ITS SPD ...."
+ // Data taken from ** AliITSvPPRasymmFMD::CreateMaterials() **.
+ // ---
+ // Arguments [the ones passed by reference contain output values]:
+ // - medOffset --> (by ref) starting number of the list of media
+ // - matOffset --> (by ref) starting number of the list of Materials
+ // ---
+ // Return value:
+ // - the last material index used + 1 (= next avaiable material index)
+ // ---
+ // Begin_Html
+ /*
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
+ title="SPD Sector drawing with all cross sections defined">
+ <p>The SPD Sector definition. In
+ <a href="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.hpgl">HPGL</a> format.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly-10-modules.ps"
+ titile="SPD All Sectors end view with thermal sheald">
+ <p>The SPD all sector end view with thermal sheald.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
+ title="SPD side view cross section">
+ <p>SPD side view cross section with condes and thermal shealds.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-A_A.jpg"
+ title="Cross section A-A"><p>Cross section A-A.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-B_B.jpg"
+ title="Cross section B-B"><p>Cross section B-B.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-C_C.jpg"
+ title-"Cross section C-C"><p>Cross section C-C.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-D_D.jpg"
+ title="Cross section D-D"><p>Cross section D-D.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-E_E.jpg"
+ title="Cross section E-E"><p>Cross section E-E.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-F_F.jpg"
+ title="Cross section F-F"><p>Cross section F-F.
+ <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-G_G.jpg"
+ title="Cross section G-G"><p>Cross section G-G.
+ */
+ // End_Html
+ //
+ const Double_t ktmaxfd = 0.1 * fgkDegree; // Degree
+ const Double_t kstemax = 1.0 * fgkcm; // cm
+ const Double_t kdeemax = 0.1;//Fraction of particle's energy 0<deemax<=1
+ const Double_t kepsil = 1.0E-4; //
+ const Double_t kstmin = 0.0 * fgkcm; // cm "Default value used"
+ const Double_t ktmaxfdAir = 0.1 * fgkDegree; // Degree
+ const Double_t kstemaxAir = 1.0000E+00 * fgkcm; // cm
+ const Double_t kdeemaxAir = 0.1; // Fraction of particle's energy 0<deemax<=1
+ const Double_t kepsilAir = 1.0E-4;//
+ const Double_t kstminAir = 0.0 * fgkcm; // cm "Default value used"
+ const Double_t ktmaxfdSi = 0.1 * fgkDegree; // .10000E+01; // Degree
+ const Double_t kstemaxSi = 0.0075 * fgkcm; // .10000E+01; // cm
+ const Double_t kdeemaxSi = 0.1; // Fraction of particle's energy 0<deemax<=1
+ const Double_t kepsilSi = 1.0E-4;//
+ const Double_t kstminSi = 0.0 * fgkcm; // cm "Default value used"
+
+ Int_t matindex = matOffset;
+ Int_t medindex = medOffset;
+ TGeoMaterial *mat;
+ TGeoMixture *mix;
+ TGeoMedium *med;
+
+ Int_t ifield = (gAlice->Field()->Integ());
+ Double_t fieldm = (gAlice->Field()->Max());
+ Double_t params[8] = {8 * 0.0};
+ params[1] = (Double_t) ifield;
+ params[2] = fieldm;
+ params[3] = ktmaxfdSi;
+ params[4] = kstemaxSi;
+ params[5] = kdeemaxSi;
+ params[6] = kepsilSi;
+ params[7] = kstminSi;
+
+ //
+ // Definition of materials and mediums.
+ // Last argument in material definition is its pressure,
+ // which is initialized to ZERO.
+ // For better readability, it is simply set to zero.
+ // Then the writing "0.0 * fgkPascal" is replaced by "0."
+ // (Alberto)
+ //
+
+ // silicon definition for ITS (overall)
+ mat = new TGeoMaterial("ITS_SI", 28.086, 14.0, 2.33 * fgkgcm3,
+ TGeoMaterial::kMatStateSolid, 25.0 * fgkCelsius, 0.);
+ mat->SetIndex(matindex);
+ med = new TGeoMedium("SI", medindex++, mat, params);
+
+ // silicon for ladder chips
+ mat = new TGeoMaterial("SPD SI CHIP", 28.086, 14.0, 2.33 * fgkgcm3,
+ TGeoMaterial::kMatStateSolid, 25.0 * fgkCelsius, 0.);
+ mat->SetIndex(matindex);
+ med = new TGeoMedium("SPD SI CHIP", medindex++, mat, params);
+
+ // silicon for pixel bus
+ mat = new TGeoMaterial("SPD SI BUS", 28.086, 14.0, 2.33 * fgkgcm3,
+ TGeoMaterial::kMatStateSolid, 25.0 * fgkCelsius, 0.);
+ mat->SetIndex(matindex);
+ med = new TGeoMedium("SPD SI BUS", medindex++, mat, params);
+
+ // carbon fiber material is defined as a mix of C-O-N-H
+ // defined in terms of fractional weights according to 'C (M55J)'
+ // it is used for the support and clips
+ mix = new TGeoMixture("C (M55J)", 4, 1.9866 * fgkgcm3);
+ mix->SetIndex(matindex);
+ mix->DefineElement(0, 12.01070, 6.0, 0.908508078); // C by fractional weight
+ mix->DefineElement(1, 14.00670, 7.0, 0.010387573); // N by fractional weight
+ mix->DefineElement(2, 15.99940, 8.0, 0.055957585); // O by fractional weight
+ mix->DefineElement(3, 1.00794, 1.0, 0.025146765); // H by fractional weight
+ mix->SetPressure(0.0 * fgkPascal);
+ mix->SetTemperature(25.0 * fgkCelsius);
+ mix->SetState(TGeoMaterial::kMatStateSolid);
+ params[3] = ktmaxfd;
+ params[4] = kstemax;
+ params[5] = kdeemax;
+ params[6] = kepsil;
+ params[7] = kstmin;
+ med = new TGeoMedium("ITSspdCarbonFiber", medindex++, mix, params);
+
+ // air defined as a mixture of C-N-O-Ar:
+ // it is used to fill all containers
+ mix = new TGeoMixture("Air", 4, 1.20479E-3 * fgkgcm3);
+ mix->SetIndex(matindex);
+ mix->DefineElement(0, 12.0107, 6.0, 0.000124); // C by fractional weight
+ mix->DefineElement(1, 14.0067, 7.0, 0.755267); // N by fractional weight
+ mix->DefineElement(2, 15.9994, 8.0, 0.231781); // O by fractional weight
+ mix->DefineElement(3, 39.9480, 18.0, 0.012827); // Ar by fractional weight
+ mix->SetPressure(101325.0 * fgkPascal); // = 1 atmosphere
+ mix->SetTemperature(25.0 * fgkCelsius);
+ mix->SetState(TGeoMaterial::kMatStateGas);
+ params[3] = ktmaxfdAir;
+ params[4] = kstemaxAir;
+ params[5] = kdeemaxAir;
+ params[6] = kepsilAir;
+ params[7] = kstminAir;
+ med = new TGeoMedium("ITSspdAir", medindex++, mix, params);
+
+ // inox stainless steel, defined as a mixture
+ // used for all metallic parts
+ mix = new TGeoMixture("INOX", 9, 8.03 * fgkgcm3);
+ mix->SetIndex(matindex);
+ mix->DefineElement(0, 12.0107, 6., .0003); // C by fractional weight
+ mix->DefineElement(1, 54.9380, 25., .02); // Fe by fractional weight
+ mix->DefineElement(2, 28.0855, 14., .01); // Na by fractional weight
+ mix->DefineElement(3, 30.9738, 15., .00045); // P by fractional weight
+ mix->DefineElement(4, 32.066 , 16., .0003); // S by fractional weight
+ mix->DefineElement(5, 58.6928, 28., .12); // Ni by fractional weight
+ mix->DefineElement(6, 55.9961, 24., .17); // by fractional weight
+ mix->DefineElement(7, 95.84 , 42., .025); // by fractional weight
+ mix->DefineElement(8, 55.845 , 26., .654); // by fractional weight
+ mix->SetPressure(0.0 * fgkPascal);
+ mix->SetTemperature(25.0 * fgkCelsius);
+ mix->SetState(TGeoMaterial::kMatStateSolid);
+ params[3] = ktmaxfdAir;
+ params[4] = kstemaxAir;
+ params[5] = kdeemaxAir;
+ params[6] = kepsilAir;
+ params[7] = kstminAir;
+ med = new TGeoMedium("ITSspdStainlessSteel", medindex++, mix, params);
+
+ // freon gas which fills the cooling system (C+F)
+ mix = new TGeoMixture("Freon", 2, 1.63 * fgkgcm3);
+ mix->SetIndex(matindex);
+ mix->DefineElement(0, 12.0107 , 6.0, 4); // C by fractional weight
+ mix->DefineElement(1, 18.9984032, 9.0, 10); // F by fractional weight
+ mix->SetPressure(101325.0 * fgkPascal); // = 1 atmosphere
+ mix->SetTemperature(25.0 * fgkCelsius);
+ mix->SetState(TGeoMaterial::kMatStateLiquid);
+ params[3] = ktmaxfdAir;
+ params[4] = kstemaxAir;
+ params[5] = kdeemaxAir;
+ params[6] = kepsilAir;
+ params[7] = kstminAir;
+ med = new TGeoMedium("ITSspdCoolingFluid", medindex++, mix, params);
+
+ // return the next index to be used in case of adding new materials
+ medOffset = medindex;
+ matOffset = matindex;
+ return matOffset;
}
-//______________________________________________________________________
-void AliITSv11GeometrySPD::InitSPDCentral(Int_t offset,TVirtualMC *vmc) const {
- // Do any SPD Central detector related initilizations, setting
- // transport cuts for example.
- // Some GEANT3 Physics switches
- // "MULTS"
- // Multiple scattering. The variable IMULS controls this process. For
- // more information see [PHYS320 or 325 or 328].
- // 0 - No multiple scattering.
- // 1 - Multiple scattering according to Moli�re theory. Default setting.
- // 2 - Same as 1. Kept for backward compatibility.
- // 3 - Pure Gaussian scattering according to the Rossi formula.
- // "DRAY"
- // delta ray production. The variable IDRAY controls this process.
- // See [PHYS430]
- // 0 - No delta rays production.
- // 1 - delta rays production with generation of . Default setting.
- // 2 - delta rays production without generation of .
- // "LOSS"
- // Continuous energy loss. The variable ILOSS controls this process.
- // 0 - No continuous energy loss, IDRAY is set to 0.
- // 1 - Continuous energy loss with generation of delta rays above
- // DCUTE (common/GCUTS/) and restricted Landau fluctuations below DCUTE.
- // 2 - Continuous energy loss without generation of delta rays and full
- // Landau-Vavilov-Gauss fluctuations. In this case the variable IDRAY
- // is forced to 0 to avoid double counting of fluctuations. Default
- // setting.
- // 3 - Same as 1, kept for backward compatibility.
- // 4 - Energy loss without fluctuation. The value obtained from the
- // tables is used directly.
- // Intputs:
- // Int_t offset The material/medium index offset.
- // TVirturalMC *vmc The pointer to the virtual Monte Carlo default gMC.
- // Outputs:
- // none.
- // Return:
- // none.
- Int_t i,n=4;
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::InitSPDCentral(Int_t offset, TVirtualMC *vmc) const
+{
+ //
+ // Do all SPD Central detector initializations (e.g.: transport cuts).
+ // ---
+ // Here follow some GEANT3 physics switches, which are interesting
+ // for these settings to be defined:
+ // - "MULTS" (MULtiple Scattering):
+ // the variable IMULS controls this process. See [PHYS320/325/328]
+ // 0 - No multiple scattering.
+ // 1 - (DEFAULT) Multiple scattering according to Moliere theory.
+ // 2 - Same as 1. Kept for backward compatibility.
+ // 3 - Pure Gaussian scattering according to the Rossi formula.
+ // - "DRAY" (Delta RAY production)
+ // The variable IDRAY controls this process. See [PHYS430]
+ // 0 - No delta rays production.
+ // 1 - (DEFAULT) Delta rays production with generation of.
+ // 2 - Delta rays production without generation of.
+ // - "LOSS" (continuous energy loss)
+ // The variable ILOSS controls this process.
+ // 0 - No continuous energy loss, IDRAY is set to 0.
+ // 1 - Continuous energy loss with generation of delta rays above
+ // DCUTE (common/GCUTS/) and restricted Landau fluctuations below DCUTE.
+ // 2 - (DEFAULT) Continuous energy loss without generation of delta rays
+ // and full Landau-Vavilov-Gauss fluctuations.
+ // In this case the variable IDRAY is forced to 0 to avoid
+ // double counting of fluctuations.
+ // 3 - Same as 1, kept for backward compatibility.
+ // 4 - Energy loss without fluctuation.
+ // The value obtained from the tables is used directly.
+ // ---
+ // Arguments:
+ // Int_t offset --> the material/medium index offset
+ // TVirtualMC *vmc --> pointer to the virtual Monte Carlo default gMC
+ //
- for(i=0;i<n;i++){
- vmc->Gstpar(i+offset,"CUTGAM",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"CUTELE",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"CUTNEU",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"CUTHAD",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"CUTMUO",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"BCUTE",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"BCUTM",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"DCUTE",30.0*fgkKeV);
- vmc->Gstpar(i+offset,"DCUTM",30.0*fgkKeV);
- //vmc->Gstpar(i+offset,"PPCUTM",);
- //vmc->Gstpar(i+offset,"PAIR",);
- //vmc->Gstpar(i+offset,"COMPT",);
- //vmc->Gstpar(i+offset,"PHOT",);
- //vmc->Gstpar(i+offset,"PFIS",);
- vmc->Gstpar(i+offset,"DRAY",1);
- //vmc->Gstpar(i+offset,"ANNI",);
- //vmc->Gstpar(i+offset,"BREM",);
- //vmc->Gstpar(i+offset,"HADR",);
- //vmc->Gstpar(i+offset,"MUNU",);
- //vmc->Gstpar(i+offset,"DCAY",);
- vmc->Gstpar(i+offset,"LOSS",1);
- //vmc->Gstpar(i+offset,"MULS",);
- //vmc->Gstpar(i+offset,"GHCOR1",);
- //vmc->Gstpar(i+offset,"BIRK1",);
- //vmc->Gstpar(i+offset,"BRIK2",);
- //vmc->Gstpar(i+offset,"BRIK3",);
- //vmc->Gstpar(i+offset,"LABS",);
- //vmc->Gstpar(i+offset,"SYNC",);
- //vmc->Gstpar(i+offset,"STRA",);
- } // end for i
+ Int_t i, n = 4;
+
+ for(i=0;i<n;i++) {
+ vmc->Gstpar(i+offset, "CUTGAM", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "CUTELE", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "CUTNEU", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "CUTHAD", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "CUTMUO", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "BCUTE", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "BCUTM", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "DCUTE", 30.0 * fgkKeV);
+ vmc->Gstpar(i+offset, "DCUTM", 30.0 * fgkKeV);
+ //vmc->Gstpar(i+offset, "PPCUTM", );
+ //vmc->Gstpar(i+offset, "PAIR", );
+ //vmc->Gstpar(i+offset, "COMPT", );
+ //vmc->Gstpar(i+offset, "PHOT", );
+ //vmc->Gstpar(i+offset, "PFIS", );
+ vmc->Gstpar(i+offset, "DRAY", 1);
+ //vmc->Gstpar(i+offset, "ANNI", );
+ //vmc->Gstpar(i+offset, "BREM", );
+ //vmc->Gstpar(i+offset, "HADR", );
+ //vmc->Gstpar(i+offset, "MUNU", );
+ //vmc->Gstpar(i+offset, "DCAY", );
+ vmc->Gstpar(i+offset, "LOSS", 1);
+ //vmc->Gstpar(i+offset, "MULS", );
+ //vmc->Gstpar(i+offset, "GHCOR1", );
+ //vmc->Gstpar(i+offset, "BIRK1", );
+ //vmc->Gstpar(i+offset, "BRIK2", );
+ //vmc->Gstpar(i+offset, "BRIK3", );
+ //vmc->Gstpar(i+offset, "LABS", );
+ //vmc->Gstpar(i+offset, "SYNC", );
+ //vmc->Gstpar(i+offset, "STRA", );
+ }
}
-//______________________________________________________________________
-void AliITSv11GeometrySPD::SPDSector(TGeoVolume *moth,TGeoManager *mgr){
- // Position of the Carbon Fiber Assembly based on distance
- // of closest point of SPD stave to beam pipe figures
- // all-sections-modules.ps of 7.22mm at section A-A.
- // Inputs:
- // TGeoVolume *moth the mother volume which this
- // object/volume is to be placed in.
- // Outputs:
- // none.
- // Return:
- // none.
- const Double_t kSPDclossesStaveAA = 7.22*fgkmm;
- const Double_t kSectorStartingAngle = -72.0*fgkDegree;
- const Double_t kNSectorsTotal = 10.; // number
- const Double_t kSectorRelativeAngle = 360./kNSectorsTotal*fgkDegree;
- const Double_t kBeamPipeRadius = 0.5*60.0*fgkmm;
- //
- Int_t i;
- Double_t angle,radiusSector,xAAtubeCenter0,yAAtubeCenter0;
- Double_t staveThicknessAA=1.03*fgkmm; // get from stave geometry.
- TGeoCombiTrans *secRot=new TGeoCombiTrans();
- TGeoVolume *vCarbonFiberSector;
- TGeoMedium *medSPDcf;
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::SPDSector(TGeoVolume *moth, TGeoManager *mgr)
+{
+ //
+ // Creates a single SPD carbon fiber sector and places it
+ // in a container volume passed as first argument ('moth').
+ // Second argument points to the TGeoManager which coordinates
+ // the overall volume creation.
+ // The position of the sector is based on distance of
+ // closest point of SPD stave to beam pipe
+ // (figures all-sections-modules.ps) of 7.22mm at section A-A.
+ //
- medSPDcf = mgr->GetMedium("ITSspdCarbonFiber");
- vCarbonFiberSector = new TGeoVolumeAssembly("ITSSPDCarbonFiberSectorV");
- vCarbonFiberSector->SetMedium(medSPDcf);
- CarbonFiberSector(vCarbonFiberSector,xAAtubeCenter0,yAAtubeCenter0);
- //SectorPlusStaves(vCarbonFiberSector,xAAtubeCenter0,yAAtubeCenter0);
- vCarbonFiberSector->SetVisibility(kTRUE); // logical volume
- // Compute the radial shift out of the sectors.
- radiusSector = kBeamPipeRadius+kSPDclossesStaveAA+staveThicknessAA;
- radiusSector *= radiusSector; // squaring;
- radiusSector -= xAAtubeCenter0*xAAtubeCenter0;
- radiusSector = -yAAtubeCenter0+TMath::Sqrt(radiusSector);
- angle = kSectorStartingAngle;
- secRot->RotateZ(angle);
- for(i=0;i<(Int_t)kNSectorsTotal;i++){
- secRot->SetDx(-radiusSector*TMath::Sin(angle/fgkRadian));
- secRot->SetDy(radiusSector*TMath::Cos(angle/fgkRadian));
- //secRot->RegisterYourself();
- moth->AddNode(vCarbonFiberSector,i+1,new TGeoCombiTrans(*secRot));
- if(GetDebug(5)){
- printf("i=%d angle=%g angle[rad]=%g radiusSector=%g x=%g y=%g \n",
- i,angle,angle/fgkRadian,radiusSector,
- -radiusSector*TMath::Sin(angle/fgkRadian),
- radiusSector*TMath::Cos(angle/fgkRadian));
- } // end if GetDebug(5)
- angle += kSectorRelativeAngle;
- secRot->RotateZ(kSectorRelativeAngle);
- } // end for i
- if(GetDebug(3)){
- moth->PrintNodes();
- } // end if GetDebug().
- delete secRot;
+ const Double_t kSPDclossesStaveAA = 7.22 * fgkmm;
+ const Double_t kSectorStartingAngle = -72.0 * fgkDegree;
+ const Double_t kNSectorsTotal = 10.0;
+ const Double_t kSectorRelativeAngle = 360.0 / kNSectorsTotal * fgkDegree;
+ const Double_t kBeamPipeRadius = 0.5 * 60.0 * fgkmm;
+
+ Int_t i;
+ Double_t angle, radiusSector, xAAtubeCenter0, yAAtubeCenter0;
+ Double_t staveThicknessAA = 1.03 * fgkmm; // get from stave geometry.
+ TGeoCombiTrans *secRot = new TGeoCombiTrans();
+ TGeoVolume *vCarbonFiberSector;
+ TGeoMedium *medSPDcf;
+
+ // define an assembly and fill it with the support of
+ // a single carbon fiber sector and staves in it
+ medSPDcf = GetMedium("SPD C (M55J)$", mgr);
+ vCarbonFiberSector = new TGeoVolumeAssembly("ITSSPDCarbonFiberSectorV");
+ vCarbonFiberSector->SetMedium(medSPDcf);
+ CarbonFiberSector(vCarbonFiberSector, xAAtubeCenter0, yAAtubeCenter0, mgr);
+ vCarbonFiberSector->SetVisibility(kTRUE); // logical volume
+
+ // Compute the radial shift out of the sectors
+ radiusSector = kBeamPipeRadius + kSPDclossesStaveAA + staveThicknessAA;
+ radiusSector *= radiusSector; // squaring;
+ radiusSector -= xAAtubeCenter0 * xAAtubeCenter0;
+ radiusSector = -yAAtubeCenter0 + TMath::Sqrt(radiusSector);
+
+ // add 10 single sectors, by replicating the virtual sector defined above
+ // and placing at different angles
+ Double_t shiftX, shiftY;
+ angle = kSectorStartingAngle;
+ secRot->RotateZ(angle);
+ for(i = 0; i < (Int_t)kNSectorsTotal; i++) {
+ shiftX = -radiusSector * TMath::Sin(angle/fgkRadian);
+ shiftY = radiusSector * TMath::Cos(angle/fgkRadian);
+ secRot->SetDx(shiftX);
+ secRot->SetDy(shiftY);
+ moth->AddNode(vCarbonFiberSector, i+1, new TGeoCombiTrans(*secRot));
+ if(GetDebug(5)) {
+ AliInfo(Form("i=%d angle=%g angle[rad]=%g radiusSector=%g x=%g y=%g \n",
+ i, angle, angle/fgkRadian, radiusSector, shiftX, shiftY));
+ }
+ angle += kSectorRelativeAngle;
+ secRot->RotateZ(kSectorRelativeAngle);
+ }
+ if(GetDebug(3)) moth->PrintNodes();
+
+ delete secRot;
}
-//______________________________________________________________________
-void AliITSv11GeometrySPD::CarbonFiberSector(TGeoVolume *moth,
- Double_t &xAAtubeCenter0,
- Double_t &yAAtubeCenter0,
- TGeoManager *mgr){
- // Define the detail SPD Carbon fiber support Sector geometry.
- // Based on the drawings ALICE-Pixel "Construzione Profilo Modulo"
- // March 25 2004 and ALICE-SUPPORTO "construzione Profilo Modulo"
- // Define Outside radii as negitive, Outside in the sence that the
- // center of the arc is outside of the object.
- // February 16 2004.
- // Inputs:
- // TGeoVolume *moth The mother volume to put this object
- // Outputs:
- // Double_t &xAAtubeCenter0 The x location of the outer surface
- // of the cooling tube center for tube 0.
- // This location helps determine where
- // this sector is to be located (information
- // used for this is the distance the
- // center of the #0 detector is from the
- // beam pipe. Measurements taken at
- // cross section A-A.
- // Double_t &yAAtubeCenter0 The y location of the outer surface
- // of the cooling tube center for tube 0
- // This location helps determine where
- // this sector is to be located (information
- // used for this is the distance the
- // center of the #0 detector is from the
- // beam pipe. Measurements taken at
- // cross section A-A.
- // TGeoManager *mgr The TGeoManager as needed, default is
- // gGeoManager.
- // Return:
- // none.
- TGeoMedium *medSPDcf = 0; // SPD support cone Carbon Fiber materal number.
- //TGeoMedium *medSPDfs = 0; // SPD support cone inserto stesalite 4411w.
- //TGeoMedium *medSPDfo = 0; // SPD support cone foam, Rohacell 50A.
- TGeoMedium *medSPDss = 0; // SPD support cone screw material,Stainless
- TGeoMedium *medSPDair = 0; // SPD support cone Air
- //TGeoMedium *medSPDal = 0; // SPD support cone SDD mounting bracket Al
- TGeoMedium *medSPDcoolfl = 0; // SPD cooling fluid, Freeon
- medSPDcf = mgr->GetMedium("ITSspdCarbonFiber");
- //medSPDfs = mgr->GetMedium("ITSspdStaselite4411w");
- //medSPDfo = mgr->GetMedium("ITSspdRohacell50A");
- medSPDss = mgr->GetMedium("ITSspdStainlessSteel");
- medSPDair= mgr->GetMedium("ITSspdAir");
- medSPDcoolfl= mgr->GetMedium("ITSspdCoolingFluid");
- //
- const Double_t ksecDz = 0.5*500.0*fgkmm;
- const Double_t ksecLen = 30.0*fgkmm;
- const Double_t ksecCthick = 0.20*fgkmm;
- const Double_t ksecDipLength = 3.2*fgkmm;
- const Double_t ksecDipRadii = 0.4*fgkmm;
- //const Double_t ksecCoolingTubeExtraDepth = 0.86*fgkmm;
- // These positions, ksecX*,ksecY* are the center of curvatures
- // for the different point around the SPD sector. The radii,
- // inner and outer, are the radous of curvature about the centers
- // ksecX* and ksecY*. To draw this SPD sector, first plot all of
- // the ksecX and ksecY points and draw circles of the specified
- // radius about these points. Connect the circles, such that the
- // lines are tangent to the circles, in accordance with the
- // radii being "Inside" or "Outside". These lines and the
- // corresponding arc's are the surface of this SPD sector.
- const Double_t ksecX0 = -10.725*fgkmm;
- const Double_t ksecY0 = -14.853*fgkmm;
- const Double_t ksecR0 = -0.8*fgkmm; // Outside
- const Double_t ksecX1 = -13.187*fgkmm;
- const Double_t ksecY1 = -19.964*fgkmm;
- const Double_t ksecR1 = +0.6*fgkmm; // Inside
- //const Double_t ksecDip0 = 5.9*fgkmm;
- //
- const Double_t ksecX2 = -3.883*fgkmm;
- const Double_t ksecY2 = -17.805*fgkmm;
- const Double_t ksecR2 = +0.80*fgkmm; // Inside Guess.
- const Double_t ksecX3 = -3.123*fgkmm;
- const Double_t ksecY3 = -14.618*fgkmm;
- const Double_t ksecR3 = -0.6*fgkmm; // Outside
- //const Double_t ksecDip1 = 8.035*fgkmm;
- //
- const Double_t ksecX4 = +11.280*fgkmm;
- const Double_t ksecY4 = -14.473*fgkmm;
- const Double_t ksecR4 = +0.8*fgkmm; // Inside
- const Double_t ksecX5 = +19.544*fgkmm;
- const Double_t ksecY5 = +10.961*fgkmm;
- const Double_t ksecR5 = +0.8*fgkmm; // Inside
- //const Double_t ksecDip2 = 4.553*fgkmm;
- //
- const Double_t ksecX6 = +10.830*fgkmm;
- const Double_t ksecY6 = +16.858*fgkmm;
- const Double_t ksecR6 = +0.6*fgkmm; // Inside
- const Double_t ksecX7 = +11.581*fgkmm;
- const Double_t ksecY7 = +13.317*fgkmm;
- const Double_t ksecR7 = -0.6*fgkmm; // Outside
- //const Double_t ksecDip3 = 6.978*fgkmm;
- //
- const Double_t ksecX8 = -0.733*fgkmm;
- const Double_t ksecY8 = +17.486*fgkmm;
- const Double_t ksecR8 = +0.6*fgkmm; // Inside
- const Double_t ksecX9 = +0.562*fgkmm;
- //const Double_t ksecY9 = +14.486*fgkmm; // correction by
- const Double_t ksecY9 = +14.107*fgkmm; // Alberto
- const Double_t ksecR9 = -0.6*fgkmm; // Outside
- //const Double_t ksecDip4 = 6.978*fgkmm;
- //
- const Double_t ksecX10 = -12.252*fgkmm;
- const Double_t ksecY10 = +16.298*fgkmm;
- const Double_t ksecR10 = +0.6*fgkmm; // Inside
- const Double_t ksecX11 = -10.445*fgkmm;
- const Double_t ksecY11 = +13.162*fgkmm;
- const Double_t ksecR11 = -0.6*fgkmm; // Outside
- //const Double_t ksecDip5 = 6.978*fgkmm;
- //
- const Double_t ksecX12 = -22.276*fgkmm;
- const Double_t ksecY12 = +12.948*fgkmm;
- const Double_t ksecR12 = +0.85*fgkmm; // Inside
- //const Double_t ksecX13 = *fgkmm;
- //const Double_t ksecY13 = *fgkmm;
- const Double_t ksecR13 = -0.8*fgkmm; // Outside
- const Double_t ksecAngleSide13 = 36.0*fgkDegree;
- //
- const Int_t ksecNRadii = 20;
- const Int_t ksecNPointsPerRadii = 4;
- const Int_t ksecNCoolingTubeDips = 6;
- // Since the Rounded parts are aproximated by a regular polygon and
- // a cooling tube of the propper diameter must fit, a scaling factor
- // increases the size of the polygon for the tube to fit.
- //const Double_t ksecRCoolScale = 1./TMath::Cos(TMath::Pi()/
- // (Double_t)ksecNPointsPerRadii);
- const Double_t ksecZEndLen = 30.00*fgkmm;
- //const Double_t ksecZFlangLen= 45.00*fgkmm;
- const Double_t ksecTl = 0.860*fgkmm;
- const Double_t ksecCthick2 = 0.600*fgkmm;
- //const Double_t ksecCthick3 = 1.800*fgkmm;
- //const Double_t ksecSidelen = 22.00*fgkmm;
- //const Double_t ksecSideD5 = 3.679*fgkmm;
- //const Double_t ksecSideD12 = 7.066*fgkmm;
- const Double_t ksecRCoolOut = 2.400*fgkmm;
- const Double_t ksecRCoolIn = 2.000*fgkmm;
- const Double_t ksecDl1 = 5.900*fgkmm;
- const Double_t ksecDl2 = 8.035*fgkmm;
- const Double_t ksecDl3 = 4.553*fgkmm;
- const Double_t ksecDl4 = 6.978*fgkmm;
- const Double_t ksecDl5 = 6.978*fgkmm;
- const Double_t ksecDl6 = 6.978*fgkmm;
- const Double_t ksecCoolTubeThick = 0.04*fgkmm;
- const Double_t ksecCoolTubeROuter = 2.6*fgkmm;
- const Double_t ksecCoolTubeFlatX = 3.696*fgkmm;
- const Double_t ksecCoolTubeFlatY = 0.68*fgkmm;
- //const Double_t ksecBeamX0 = 0.0*fgkmm; // guess
- //const Double_t ksecBeamY0 = (15.223+40.)*fgkmm; // guess
- //
- const Int_t ksecNPoints = (ksecNPointsPerRadii+1)*ksecNRadii + 8;
- Double_t secX[ksecNRadii] = {ksecX0,ksecX1,-1000.0,ksecX2 ,ksecX3 ,-1000.0,
- ksecX4,ksecX5,-1000.0,ksecX6 ,ksecX7 ,-1000.0,
- ksecX8,ksecX9,-1000.0,ksecX10,ksecX11,-1000.0,
- ksecX12,-1000.0};
- Double_t secY[ksecNRadii] = {ksecY0,ksecY1,-1000.0,ksecY2 ,ksecY3 ,-1000.0,
- ksecY4,ksecY5,-1000.0,ksecY6 ,ksecY7 ,-1000.0,
- ksecY8,ksecY9,-1000.0,ksecY10,ksecY11,-1000.0,
- ksecY12,-1000.0};
- Double_t secR[ksecNRadii] ={ksecR0 ,ksecR1 ,-.5*ksecDipLength-ksecDipRadii,
- ksecR2 ,ksecR3 ,-.5*ksecDipLength-ksecDipRadii,
- ksecR4 ,ksecR5 ,-.5*ksecDipLength-ksecDipRadii,
- ksecR6 ,ksecR7 ,-.5*ksecDipLength-ksecDipRadii,
- ksecR8 ,ksecR9 ,-.5*ksecDipLength-ksecDipRadii,
- ksecR10,ksecR11,-.5*ksecDipLength-ksecDipRadii,
- ksecR12,ksecR13};/*
- Double_t secDip[ksecNRadii]={0.0,0.0,ksecDip0,0.0,0.0,ksecDip1,
- 0.0,0.0,ksecDip2,0.0,0.0,ksecDip3,
- 0.0,0.0,ksecDip4,0.0,0.0,ksecDip5,
- 0.0,0.0};*/
- Double_t secX2[ksecNRadii];
- Double_t secY2[ksecNRadii];
- Double_t secR2[ksecNRadii] = {
- ksecR0,ksecR1,ksecRCoolOut,ksecR2,ksecR3,ksecRCoolOut,ksecR4,ksecR5,
- ksecRCoolOut,ksecR6,ksecR7,ksecRCoolOut,ksecR8,ksecR9,ksecRCoolOut,
- ksecR10,ksecR11,ksecRCoolOut,ksecR12,ksecR13};
- Double_t secDip2[ksecNCoolingTubeDips]={ksecDl1,ksecDl2,ksecDl3,
- ksecDl4,ksecDl5,ksecDl6};
- Double_t secX3[ksecNRadii];
- Double_t secY3[ksecNRadii];
- const Int_t ksecDipIndex[ksecNCoolingTubeDips] = {2,5,8,11,14,17};
- Double_t secAngleStart[ksecNRadii];
- Double_t secAngleEnd[ksecNRadii];
- Double_t secAngleStart2[ksecNRadii];
- Double_t secAngleEnd2[ksecNRadii];
- Double_t secAngleTurbo[ksecNCoolingTubeDips] = {0.0,0.0,0.0,0.0,0.0,0.0};
- //Double_t secAngleStart3[ksecNRadii];
- //Double_t secAngleEnd3[ksecNRadii];
- Double_t xpp[ksecNPoints],ypp[ksecNPoints];
- Double_t xpp2[ksecNPoints],ypp2[ksecNPoints];
- Double_t *xp[ksecNRadii],*xp2[ksecNRadii];
- Double_t *yp[ksecNRadii],*yp2[ksecNRadii];
- TGeoXtru *sA0,*sA1,*sB0,*sB1;
- TGeoEltu *sTA0,*sTA1;
- TGeoTube *sTB0,*sTB1; //,*sM0;
- TGeoRotation *rot;
- TGeoTranslation *trans;
- TGeoCombiTrans *rotrans;
- Double_t t,t0,t1,a,b,x0,y0,x1,y1;
- Int_t i,j,k,m;
- Bool_t tst;
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::CarbonFiberSector
+(TGeoVolume *moth, Double_t &xAAtubeCenter0, Double_t &yAAtubeCenter0, TGeoManager *mgr)
+{
+ //
+ // Define the detail SPD Carbon fiber support Sector geometry.
+ // Based on the drawings:
+ // - ALICE-Pixel "Costruzione Profilo Modulo" (march 25 2004)
+ // - ALICE-SUPPORTO "Costruzione Profilo Modulo"
+ // ---
+ // Define outside radii as negative, where "outside" means that the
+ // center of the arc is outside of the object (feb 16 2004).
+ // ---
+ // Arguments [the one passed by ref contain output values]:
+ // TGeoVolume *moth --> the voulme which will contain this object
+ // Double_t &xAAtubeCenter0 --> (by ref) x location of the outer surface
+ // of the cooling tube center for tube 0.
+ // Double_t &yAAtubeCenter0 --> (by ref) y location of the outer surface
+ // of the cooling tube center for tube 0.
+ // TGeoManager *mgr --> TGeo builder
+ // ---
+ // Int the two variables passed by reference values will be stored
+ // which will then be used to correctly locate this sector.
+ // The information used for this is the distance between the
+ // center of the #0 detector and the beam pipe.
+ // Measurements are taken at cross section A-A.
+ //
+
+ //TGeoMedium *medSPDfs = 0; // SPD support cone inserto stesalite 4411w.
+ //TGeoMedium *medSPDfo = 0; // SPD support cone foam, Rohacell 50A.
+ //TGeoMedium *medSPDal = 0; // SPD support cone SDD mounting bracket Al
+ TGeoMedium *medSPDcf = GetMedium("SPD C (M55J)$", mgr);
+ TGeoMedium *medSPDss = GetMedium("INOX$", mgr);
+ TGeoMedium *medSPDair = GetMedium("AIR$", mgr);
+ TGeoMedium *medSPDcoolfl = GetMedium("Freon$", mgr); //ITSspdCoolingFluid
+
+ const Double_t ksecDz = 0.5 * 500.0 * fgkmm;
+ const Double_t ksecLen = 30.0 * fgkmm;
+ const Double_t ksecCthick = 0.2 * fgkmm;
+ const Double_t ksecDipLength = 3.2 * fgkmm;
+ const Double_t ksecDipRadii = 0.4 * fgkmm;
+ //const Double_t ksecCoolingTubeExtraDepth = 0.86 * fgkmm;
- if(moth==0){
- Error("CarbonFiberSector","moth=%p",moth);
- return;
- } // end if moth==0
- //SetDebug(3);
- for(i=0;i<ksecNRadii;i++){
- xp[i] = &(xpp[i*(ksecNPointsPerRadii+1)]);
- yp[i] = &(ypp[i*(ksecNPointsPerRadii+1)]);
- xp2[i] = &(xpp2[i*(ksecNPointsPerRadii+1)]);
- yp2[i] = &(ypp2[i*(ksecNPointsPerRadii+1)]);
- secX2[i] = secX[i];
- secY2[i] = secY[i];
- secX3[i] = secX[i];
- secY3[i] = secY[i];
- } // end for i
+ // The following positions ('ksecX#' and 'ksecY#') and radii ('ksecR#')
+ // are the centers and radii of curvature of all the rounded corners
+ // between the straight borders of the SPD sector shape.
+ // To draw this SPD sector, the following steps are followed:
+ // 1) the (ksecX, ksecY) points are plotted
+ // and circles of the specified radii are drawn around them.
+ // 2) each pair of consecutive circles is connected by a line
+ // tangent to them, in accordance with the radii being "internal" or "external"
+ // with respect to the closed shape which describes the sector itself.
+ // The resulting connected shape is the section
+ // of the SPD sector surface in the transverse plane (XY).
+
+ const Double_t ksecX0 = -10.725 * fgkmm;
+ const Double_t ksecY0 = -14.853 * fgkmm;
+ const Double_t ksecR0 = -0.8 * fgkmm; // external
+ const Double_t ksecX1 = -13.187 * fgkmm;
+ const Double_t ksecY1 = -19.964 * fgkmm;
+ const Double_t ksecR1 = +0.6 * fgkmm; // internal
+ // const Double_t ksecDip0 = 5.9 * fgkmm;
+
+ const Double_t ksecX2 = -3.883 * fgkmm;
+ const Double_t ksecY2 = -17.805 * fgkmm;
+ const Double_t ksecR2 = +0.80 * fgkmm; // internal (guess)
+ const Double_t ksecX3 = -3.123 * fgkmm;
+ const Double_t ksecY3 = -14.618 * fgkmm;
+ const Double_t ksecR3 = -0.6 * fgkmm; // external
+ //const Double_t ksecDip1 = 8.035 * fgkmm;
+
+ const Double_t ksecX4 = +11.280 * fgkmm;
+ const Double_t ksecY4 = -14.473 * fgkmm;
+ const Double_t ksecR4 = +0.8 * fgkmm; // internal
+ const Double_t ksecX5 = +19.544 * fgkmm;
+ const Double_t ksecY5 = +10.961 * fgkmm;
+ const Double_t ksecR5 = +0.8 * fgkmm; // internal
+ //const Double_t ksecDip2 = 4.553 * fgkmm;
+
+ const Double_t ksecX6 = +10.830 * fgkmm;
+ const Double_t ksecY6 = +16.858 * fgkmm;
+ const Double_t ksecR6 = +0.6 * fgkmm; // internal
+ const Double_t ksecX7 = +11.581 * fgkmm;
+ const Double_t ksecY7 = +13.317 * fgkmm;
+ const Double_t ksecR7 = -0.6 * fgkmm; // external
+ //const Double_t ksecDip3 = 6.978 * fgkmm;
+
+ const Double_t ksecX8 = -0.733 * fgkmm;
+ const Double_t ksecY8 = +17.486 * fgkmm;
+ const Double_t ksecR8 = +0.6 * fgkmm; // internal
+ const Double_t ksecX9 = +0.562 * fgkmm;
+ //const Double_t ksecY9 = +14.486 * fgkmm; // correction by
+ const Double_t ksecY9 = +14.107 * fgkmm; // Alberto
+ const Double_t ksecR9 = -0.6 * fgkmm; // external
+ //const Double_t ksecDip4 = 6.978 * fgkmm;
- // Find starting and ending angles for all but cooling tube sections
- secAngleStart[0] = 0.5*ksecAngleSide13;
- for(i=0;i<ksecNRadii-2;i++){
- tst = kFALSE;
- for(j=0;j<ksecNCoolingTubeDips;j++) tst = tst||i==ksecDipIndex[j];
- if(tst) continue;
- tst = kFALSE;
- for(j=0;j<ksecNCoolingTubeDips;j++) tst = tst||(i+1)==ksecDipIndex[j];
- if(tst) j = i+2;
- else j = i+1;
- AnglesForRoundedCorners(secX[i],secY[i],secR[i],
- secX[j],secY[j],secR[j],t0,t1);
- secAngleEnd[i] = t0;
- secAngleStart[j] = t1;
- if(secR[i]>0.0&&secR[j]>0.0)if(secAngleStart[i]>secAngleEnd[i])
- secAngleEnd[i] += 360.0;
- secAngleStart2[i] = secAngleStart[i];
- secAngleEnd2[i] = secAngleEnd[i];
- } // end for i
- secAngleEnd[ksecNRadii-2] = secAngleStart[ksecNRadii-2] +
- (secAngleEnd[ksecNRadii-5]-
- secAngleStart[ksecNRadii-5]);
- if(secAngleEnd[ksecNRadii-2]<0.0) secAngleEnd[ksecNRadii-2] += 360.0;
- secAngleStart[ksecNRadii-1] = secAngleEnd[ksecNRadii-2] - 180.0;
- secAngleEnd[ksecNRadii-1] = secAngleStart[0];
- secAngleStart2[ksecNRadii-2] = secAngleStart[ksecNRadii-2];
- secAngleEnd2[ksecNRadii-2] = secAngleEnd[ksecNRadii-2];
- secAngleStart2[ksecNRadii-1] = secAngleStart[ksecNRadii-1];
- secAngleEnd2[ksecNRadii-1] = secAngleEnd[ksecNRadii-1];
- // Find location of circle last rounded corner.
- i = 0;
- j = ksecNRadii-2;
- t0 = TanD(secAngleStart[i]-90.);
- t1 = TanD(secAngleEnd[j]-90.);
- t = secY[i] - secY[j];
- // Note, secR[i=0] <0; secR[j=18]>0; and secR[j+1=19] <0
- t += (-secR[i]+secR[j+1])*SinD(secAngleStart[i]);
- t -= (secR[j]-secR[j+1])*SinD(secAngleEnd[j]);
- t += t1*secX[j] - t0*secX[i];
- t += t1*(secR[j]-secR[j+1])*CosD(secAngleEnd[j]);
- t -= t0*(-secR[i]+secR[j+1])*CosD(secAngleStart[i]);
- secX[ksecNRadii-1] = t/(t1-t0);
- secY[ksecNRadii-1] = TanD(90.+0.5*ksecAngleSide13)*
- (secX[ksecNRadii-1]-secX[0]) + secY[0];
- secX2[ksecNRadii-1] = secX[ksecNRadii-1];
- secY2[ksecNRadii-1] = secY[ksecNRadii-1];
- secX3[ksecNRadii-1] = secX[ksecNRadii-1];
- secY3[ksecNRadii-1] = secY[ksecNRadii-1];
- // find location of cooling tube centers
- for(i=0;i<ksecNCoolingTubeDips;i++){
- j = ksecDipIndex[i];
- x0 = secX[j-1] + TMath::Abs(secR[j-1])*CosD(secAngleEnd[j-1]);
- y0 = secY[j-1] + TMath::Abs(secR[j-1])*SinD(secAngleEnd[j-1]);
- x1 = secX[j+1] + TMath::Abs(secR[j+1])*CosD(secAngleStart[j+1]);
- y1 = secY[j+1] + TMath::Abs(secR[j+1])*SinD(secAngleStart[j+1]);
- t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
- t = secDip2[i]/t0;
- a = x0+(x1-x0)*t;
- b = y0+(y1-y0)*t;
- if(i==0){ // get location of tube center->Surface for locating
- // this sector around the beam pipe. This needs to be
- // double checked, but I need my notes for that, Bjorn Nilsen
- xAAtubeCenter0 = x0+(x1-x0)*t*0.5;
- yAAtubeCenter0 = y0+(y1-y0)*t*0.5;
- } // end if i==0
- if(a+b*(a-x0)/(b-y0)>0.0){
- secX[j] = a + TMath::Abs(y1-y0)*2.0*ksecDipRadii/t0;
- secY[j] = b - TMath::Sign(2.0*ksecDipRadii,y1-y0)*(x1-x0)/t0;
- secX2[j] = a + TMath::Abs(y1-y0)*ksecTl/t0;
- secY2[j] = b - TMath::Sign(ksecTl,y1-y0)*(x1-x0)/t0;
- secX3[j] = a + TMath::Abs(y1-y0)*(2.0*ksecDipRadii-
- 0.5*ksecCoolTubeFlatY)/t0;
- secY3[j] = b - TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
- y1-y0)*(x1-x0)/t0;
- }else{
- secX[j] = a - TMath::Abs(y1-y0)*2.0*ksecDipRadii/t0;
- secY[j] = b + TMath::Sign(2.0*ksecDipRadii,y1-y0)*(x1-x0)/t0;
- secX2[j] = a - TMath::Abs(y1-y0)*ksecTl/t0;
- secY2[j] = b + TMath::Sign(ksecTl,y1-y0)*(x1-x0)/t0;
- secX3[j] = a - TMath::Abs(y1-y0)*(2.0*ksecDipRadii-
- 0.5*ksecCoolTubeFlatY)/t0;
- secY3[j] = b + TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
- y1-y0)*(x1-x0)/t0;
- } // end if
- // Set up Start and End angles to correspond to start/end of dips.
- t1 = (secDip2[i]-TMath::Abs(secR[j]))/t0;
- secAngleStart[j] = TMath::RadToDeg()*TMath::ATan2(
- y0+(y1-y0)*t1-secY[j],x0+(x1-x0)*t1-secX[j]);
- if(secAngleStart[j]<0.0) secAngleStart[j] += 360.0;
- secAngleStart2[j] = secAngleStart[j];
- t1 = (secDip2[i]+TMath::Abs(secR[j]))/t0;
- secAngleEnd[j] = TMath::RadToDeg()*TMath::ATan2(
- y0+(y1-y0)*t1-secY[j],x0+(x1-x0)*t1-secX[j]);
- if(secAngleEnd[j]<0.0) secAngleEnd[j] += 360.0;
- secAngleEnd2[j] = secAngleEnd[j];
- if(secAngleEnd[j]>secAngleStart[j]) secAngleEnd[j] -= 360.0;
- secR[j] = TMath::Sqrt(secR[j]*secR[j]+4.0*ksecDipRadii*ksecDipRadii);
- } // end for i
- // Special cases
- secAngleStart2[8] -= 360.;
- secAngleStart2[11] -= 360.;
- //
- fSPDsectorPoints0.Set(ksecNCoolingTubeDips);
- fSPDsectorPoints1.Set(ksecNCoolingTubeDips);
- //
- for(i=0;i<ksecNCoolingTubeDips;i++){
- // Find index in xpp[] and ypp[] corresponding to where the
- // SPD ladders are to be attached. Order them according to
- // the ALICE numbering schema. Using array of indexes (+-1 for
- // cooling tubes. For any "bend/dip/edge, there are
- // ksecNPointsPerRadii+1 points involved.
- if(i==0) j=1;
- else if(i==1) j=0;
- else j=i;
- fSPDsectorPoints0[i] = (ksecDipIndex[j]-1)*(ksecNPointsPerRadii+1)+
- (ksecNPointsPerRadii);
- fSPDsectorPoints1[i] = (ksecDipIndex[j]+1)*(ksecNPointsPerRadii+1);
- } // end for i
- SPDsectorShape(ksecNRadii,secX,secY,secR,secAngleStart,secAngleEnd,
- ksecNPointsPerRadii,m,xp,yp);
- // Fix up dips to be square.
- for(i=0;i<ksecNCoolingTubeDips;i++){
- j = ksecDipIndex[i];
- t = 0.5*ksecDipLength+ksecDipRadii;
- t0 = TMath::RadToDeg()*TMath::ATan(2.0*ksecDipRadii/t);
- t1 = secAngleEnd[j] + t0;
- t0 = secAngleStart[j] - t0;
- x0 = xp[j][1] = secX[j] + t*CosD(t0);
- y0 = yp[j][1] = secY[j] + t*SinD(t0);
- x1 = xp[j][ksecNPointsPerRadii-1] = secX[j] + t*CosD(t1);
- y1 = yp[j][ksecNPointsPerRadii-1] = secY[j] + t*SinD(t1);
- t0 = 1./((Double_t)(ksecNPointsPerRadii-2));
- for(k=2;k<ksecNPointsPerRadii-1;k++){// extra points spread them out.
- t = ((Double_t)(k-1))*t0;
- xp[j][k] = x0+(x1-x0)*t;
- yp[j][k] = y0+(y1-y0)*t;
- } // end for k
- secAngleTurbo[i] = -TMath::RadToDeg()*TMath::ATan2(y1-y0,x1-x0);
- if(GetDebug(3)){
- cout <<"i="<<i<<" angle="<<secAngleTurbo[i]<<" x0,y0{"
- <<x0<<","<<y0<<"} x1y1={"<<x1<<","<<y1<<"}"<<endl;
- } // end if
- } // end for i
- sA0 = new TGeoXtru(2);
- // This shape needs to be access later to mount the SPD sector to.
- //fSPDsectorShapeName = "ITS SPD Carbon fiber support Sector A0";
- //sA0->SetName(fSPDsectorShapeName.Data());
- sA0->SetName("ITS SPD Carbon fiber support Sector A0");
- sA0->DefinePolygon(m,xpp,ypp);
- sA0->DefineSection(0,-ksecDz);
- sA0->DefineSection(1,ksecDz);
- //
- //printf("SectorA#%d ",0);
- InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],
- ksecCthick,xpp2[0],ypp2[0]);
- for(i=1;i<m-1;i++){
- j = i/(ksecNPointsPerRadii+1);
- //printf("SectorA#%d ",i);
- InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],
- ksecCthick,xpp2[i],ypp2[i]);
- } // end for i
- //printf("SectorA#%d ",m);
- InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
- ksecCthick,xpp2[m-1],ypp2[m-1]);
- // Fix center value of cooling tube dip.
- // find location of cooling tube centers
- for(i=0;i<ksecNCoolingTubeDips;i++){
- j = ksecDipIndex[i];
- x0 = xp2[j][1];
- y0 = yp2[j][1];
- x1 = xp2[j][ksecNPointsPerRadii-1];
- y1 = yp2[j][ksecNPointsPerRadii-1];
- t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
- t = secDip2[i]/t0;
- for(k=2;k<ksecNPointsPerRadii-1;k++){// extra points spread them out.
- t = ((Double_t)(k-1))*t0;
- xp2[j][k] = x0+(x1-x0)*t;
- yp2[j][k] = y0+(y1-y0)*t;
- } // end for k
- } // end for i
- sA1 = new TGeoXtru(2);
- sA1->SetName("ITS SPD Carbon fiber support Sector Air A1");
- sA1->DefinePolygon(m,xpp2,ypp2);
- sA1->DefineSection(0,-ksecDz);
- sA1->DefineSection(1,ksecDz);
- //
- // Error in TGeoEltu. Semi-axis X must be < Semi-axis Y (?).
- sTA0 = new TGeoEltu("ITS SPD Cooling Tube TA0",
- 0.5* ksecCoolTubeFlatY, 0.5* ksecCoolTubeFlatX,ksecDz);
- sTA1 = new TGeoEltu("ITS SPD Cooling Tube coolant TA1",
- sTA0->GetA()-ksecCoolTubeThick,
- sTA0->GetB()-ksecCoolTubeThick,ksecDz);
- //
- SPDsectorShape(ksecNRadii,secX2,secY2,secR2,secAngleStart2,secAngleEnd2,
- ksecNPointsPerRadii,m,xp,yp);
- //
- sB0 = new TGeoXtru(2);
- sB0->SetName("ITS SPD Carbon fiber support Sector End B0");
- sB0->DefinePolygon(m,xpp,ypp);
- sB0->DefineSection(0,ksecDz);
- sB0->DefineSection(1,ksecDz+ksecZEndLen);
- //
- //printf("SectorB#%d ",0);
- InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],
- ksecCthick2,xpp2[0],ypp2[0]);
- for(i=1;i<m-1;i++){
- t = ksecCthick2;
- for(k=0;k<ksecNCoolingTubeDips;k++)
- if((i/(ksecNPointsPerRadii+1))==ksecDipIndex[k])
- if(!(ksecDipIndex[k]*(ksecNPointsPerRadii+1)==i ||
- ksecDipIndex[k]*(ksecNPointsPerRadii+1)+
- ksecNPointsPerRadii==i ))
- t = ksecRCoolOut-ksecRCoolIn;
- //printf("SectorB#%d ",i);
- InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],
- t,xpp2[i],ypp2[i]);
- } // end for
- //printf("SectorB#%d ",m);
- InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
- ksecCthick2,xpp2[m-1],ypp2[m-1]);
- sB1 = new TGeoXtru(2);
- sB1->SetName("ITS SPD Carbon fiber support Sector Air End B1");
- sB1->DefinePolygon(m,xpp2,ypp2);
- sB1->DefineSection(0,ksecDz);
- sB1->DefineSection(1,ksecDz+ksecLen);
- sTB0 = new TGeoTube("ITS SPD Cooling Tube End TB0",0.0,
- 0.5*ksecCoolTubeROuter,0.5*ksecLen);
- sTB1 = new TGeoTube("ITS SPD Cooling Tube End coolant TB0",0.0,
- sTB0->GetRmax()-ksecCoolTubeThick,0.5*ksecLen);
- //
- //sM0 = new TGeoTube("ITS SPD Sensitive Virutual Volume M0",0.0,8.0,
- // sA0->GetZ(1)+sB0->GetZ(1));
- //
- if(GetDebug(3)){
- if(medSPDcf) medSPDcf->Dump();
- else printf("medSPDcf=0\n");
- if(medSPDss) medSPDss->Dump();
- else printf("medSPDss=0\n");
- if(medSPDair) medSPDair->Dump();
- else printf("medSPDAir=0\n");
- if(medSPDcoolfl) medSPDcoolfl->Dump();
- else printf("medSPDcoolfl=0\n");
- //sM0->InspectShape();
- sA0->InspectShape();
- sA1->InspectShape();
- sB0->InspectShape();
- sB1->InspectShape();
- } // end if GetDebug
- //
- TGeoVolume *vA0,*vA1,*vTA0,*vTA1,*vB0,*vB1,*vTB0,*vTB1;
- TGeoVolumeAssembly *vM0;
- vM0 = new TGeoVolumeAssembly("ITSSPDSensitiveVirtualvolumeM0");
- //vM0 = new TGeoVolume("ITSSPDSensitiveVirtualvolumeM0",sM0,medSPDair);
- //vM0->SetVisibility(kTRUE);
- //vM0->SetLineColor(7); // light Blue
- //vM0->SetLineWidth(1);
- //vM0->SetFillColor(vM0->GetLineColor());
- //vM0->SetFillStyle(4090); // 90% transparent
- // ALBERTO
- fSPDsectorShapeName = "ITSSPDCarbonFiberSupportSectorA0";
- vA0 = new TGeoVolume(fSPDsectorShapeName,sA0,medSPDcf);
- //vA0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorA0",sA0,medSPDcf);
- vA0->SetVisibility(kTRUE);
- vA0->SetLineColor(4); // Blue
- vA0->SetLineWidth(1);
- vA0->SetFillColor(vA0->GetLineColor());
- vA0->SetFillStyle(4010); // 10% transparent
- vA1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorAirA1",sA1,medSPDair);
- vA1->SetVisibility(kTRUE);
- vA1->SetLineColor(7); // light Blue
- vA1->SetLineWidth(1);
- vA1->SetFillColor(vA1->GetLineColor());
- vA1->SetFillStyle(4090); // 90% transparent
- vTA0 = new TGeoVolume("ITSSPDCoolingTubeTA0",sTA0,medSPDss);
- vTA0->SetVisibility(kTRUE);
- vTA0->SetLineColor(1); // Black
- vTA0->SetLineWidth(1);
- vTA0->SetFillColor(vTA0->GetLineColor());
- vTA0->SetFillStyle(4000); // 0% transparent
- vTA1 = new TGeoVolume("ITSSPDCoolingTubeFluidTA1",sTA1,medSPDcoolfl);
- vTA1->SetVisibility(kTRUE);
- vTA1->SetLineColor(6); // Purple
- vTA1->SetLineWidth(1);
- vTA1->SetFillColor(vTA1->GetLineColor());
- vTA1->SetFillStyle(4000); // 0% transparent
- vB0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndB0",sB0,medSPDcf);
- vB0->SetVisibility(kTRUE);
- vB0->SetLineColor(4); // Blue
- vB0->SetLineWidth(1);
- vB0->SetFillColor(vB0->GetLineColor());
- vB0->SetFillStyle(4010); // 10% transparent
- vB1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB1",
- sB1,medSPDair);
- vB1->SetVisibility(kTRUE);
- vB1->SetLineColor(7); // light Blue
- vB1->SetLineWidth(1);
- vB1->SetFillColor(vB1->GetLineColor());
- vB1->SetFillStyle(4090); // 90% transparent
- vTB0 = new TGeoVolume("ITSSPDCoolingTubeEndTB0",sTB0,medSPDss);
- vTB0->SetVisibility(kTRUE);
- vTB0->SetLineColor(1); // Black
- vTB0->SetLineWidth(1);
- vTB0->SetFillColor(vTB0->GetLineColor());
- vTB0->SetFillStyle(4000); // 0% transparent
- vTB1 = new TGeoVolume("ITSSPDCoolingTubeEndFluidTB1",sTB1,medSPDcoolfl);
- vTB1->SetVisibility(kTRUE);
- vTB1->SetLineColor(6); // Purple
- vTB1->SetLineWidth(1);
- vTB1->SetFillColor(vTB1->GetLineColor());
- vTB1->SetFillStyle(4000); // 0% transparent
- //
- StavesInSector(vM0);
- moth->AddNode(vM0,1,0); // Add virtual volume to mother
- vA0->AddNode(vA1,1,0); // Put air inside carbon fiber.
- vB0->AddNode(vB1,1,0); // Put air inside carbon fiber.
- vTA0->AddNode(vTA1,1,0); // Put air inside carbon fiber.
- vTB0->AddNode(vTB1,1,0); // Put air inside carbon fiber.
- for(i=0;i<ksecNCoolingTubeDips;i++){
- x0 = secX3[ksecDipIndex[i]];
- y0 = secY3[ksecDipIndex[i]];
- t = 90.0-secAngleTurbo[i];
- trans = new TGeoTranslation("",x0,y0,0.5*(sB1->GetZ(0)+sB1->GetZ(1)));
- vB1->AddNode(vTB0,i+1,trans);
- rot = new TGeoRotation("",0.0,0.0,t);
- rotrans = new TGeoCombiTrans("",x0,y0,0.0,rot);
- vM0->AddNode(vTA0,i+1,rotrans);
- //delete rot; // rot owned by AliITSv11GeometerySPD::CarbonFiberSector
- } // end for i
- vM0->AddNode(vA0,1,0);
- vM0->AddNode(vB0,1,0);
- // Reflection.
- vM0->AddNode(vB0,2,new TGeoRotation("",90.,0.,90.,90.,180.,0.));
- if(GetDebug(3)){
- vM0->PrintNodes();
- vA0->PrintNodes();
- vA1->PrintNodes();
- vB0->PrintNodes();
- vB1->PrintNodes();
- vTA0->PrintNodes();
- vTA1->PrintNodes();
- vTB0->PrintNodes();
- vTB1->PrintNodes();
- } // end if GetDebug
- //
-}
-//----------------------------------------------------------------------
-Bool_t AliITSv11GeometrySPD::GetSectorMountingPoints(Int_t index,
- Double_t &x0,Double_t &y0,
- Double_t &x1,Double_t &y1,TGeoManager *mgr)const{
- // Return's the mounting locations needed to mount the SPD ladders
- // on the SPD Carbon fiber Sectors (A cross section). Coordinate
- // system is that of the carbon fiber sector TVolume
- // "ITSSPDCarbonFiberSupportSectorA0". Index numbering is as follows
- // /5
- // /\/4
- // 1\ \/3
- // 0|___\/2
- // Inputs:
- // Int_t index the index for which location on the SPD sector [0-5]
- // Outputs:
- // Double_t &x0 The x0 location or the ladder sector [cm]
- // Double_t &y0 The y0 location of the ladder sector [cm]
- // Double_t &x1 The x1 location or the ladder sector [cm]
- // Double_t &y1 The y1 location of the ladder sector [cm]
- // TGeoManager *mgr The Geometry manager to use [gGeoManager]
- // Return:
- // Returns kTRUE if no problems incountered. Returns kFALSE
- // if a problem was incountered (for example the shape has
- // not been found.
- TGeoVolume *spdSectorV=0;
- TGeoXtru *spdSector=0;
- Int_t ixy0,ixy1;
+ const Double_t ksecX10 = -12.252 * fgkmm;
+ const Double_t ksecY10 = +16.298 * fgkmm;
+ const Double_t ksecR10 = +0.6 * fgkmm; // internal
+ const Double_t ksecX11 = -10.445 * fgkmm;
+ const Double_t ksecY11 = +13.162 * fgkmm;
+ const Double_t ksecR11 = -0.6 * fgkmm; // external
+ //const Double_t ksecDip5 = 6.978 * fgkmm;
+
+ const Double_t ksecX12 = -22.276 * fgkmm;
+ const Double_t ksecY12 = +12.948 * fgkmm;
+ const Double_t ksecR12 = +0.85 * fgkmm; // internal
+ const Double_t ksecR13 = -0.8 * fgkmm; // external
+ const Double_t ksecAngleSide13 = 36.0 * fgkDegree;
+
+ const Int_t ksecNRadii = 20;
+ const Int_t ksecNPointsPerRadii = 4;
+ const Int_t ksecNCoolingTubeDips = 6;
+
+ // Since the rounded parts are approximated by a regular polygon
+ // and a cooling tube of the propper diameter must fit, a scaling factor
+ // increases the size of the polygon for the tube to fit.
+ //const Double_t ksecRCoolScale = 1./TMath::Cos(TMath::Pi()/(Double_t)ksecNPointsPerRadii);
+ const Double_t ksecZEndLen = 30.000 * fgkmm;
+ //const Double_t ksecZFlangLen = 45.000 * fgkmm;
+ const Double_t ksecTl = 0.860 * fgkmm;
+ const Double_t ksecCthick2 = 0.600 * fgkmm;
+ //const Double_t ksecCthick3 = 1.80 * fgkmm;
+ //const Double_t ksecSidelen = 22.0 * fgkmm;
+ //const Double_t ksecSideD5 = 3.679 * fgkmm;
+ //const Double_t ksecSideD12 = 7.066 * fgkmm;
+ const Double_t ksecRCoolOut = 2.400 * fgkmm;
+ const Double_t ksecRCoolIn = 2.000 * fgkmm;
+ const Double_t ksecDl1 = 5.900 * fgkmm;
+ const Double_t ksecDl2 = 8.035 * fgkmm;
+ const Double_t ksecDl3 = 4.553 * fgkmm;
+ const Double_t ksecDl4 = 6.978 * fgkmm;
+ const Double_t ksecDl5 = 6.978 * fgkmm;
+ const Double_t ksecDl6 = 6.978 * fgkmm;
+ const Double_t ksecCoolTubeThick = 0.04 * fgkmm;
+ const Double_t ksecCoolTubeROuter = 2.6 * fgkmm;
+ const Double_t ksecCoolTubeFlatX = 3.696 * fgkmm;
+ const Double_t ksecCoolTubeFlatY = 0.68 * fgkmm;
+ //const Double_t ksecBeamX0 = 0.0 * fgkmm; // guess
+ //const Double_t ksecBeamY0 = (15.223 + 40.) * fgkmm; // guess
- x0 = x1 = y0 = y1 = 0.0;
- if(index<0 || index>fSPDsectorPoints0.GetSize()){
- Error("GetSectorMountingPoints","index=%d size=%d",index,
- fSPDsectorPoints0.GetSize());
- return kFALSE;
- }// end if
- spdSectorV = mgr->GetVolume(fSPDsectorShapeName.Data());
- if(spdSectorV==0){
- Error("GetSectorMountingPoints","spdSectorV==0 name=%s",
- fSPDsectorShapeName.Data());
- return kFALSE;
- } // end if
- spdSector = dynamic_cast<TGeoXtru*>(spdSectorV->GetShape());
- if(spdSector==0){
- Error("GetSectorMountingPoints","spdSector==0");
- return kFALSE;
- } // end if
- ixy0 = fSPDsectorPoints0.At(index);
- ixy1 = fSPDsectorPoints1.At(index);
- x0 = spdSector->GetX(ixy0);
- y0 = spdSector->GetY(ixy0);
- x1 = spdSector->GetX(ixy1);
- y1 = spdSector->GetY(ixy1);
- return kTRUE;
-}
-//----------------------------------------------------------------------
-void AliITSv11GeometrySPD::SPDsectorShape(Int_t n,const Double_t *xc,
-const Double_t *yc,const Double_t *r,const Double_t *ths,const Double_t *the,
- Int_t npr,Int_t &m,Double_t **xp,Double_t **yp){
- // Code to compute the points that make up the shape of the SPD
- // Carbon fiber support sections
- // Inputs:
- // Int_t n Size of arrays xc,yc, and r.
- // Double_t *xc Array of x values for radii centers.
- // Double_t *yc Array of y values for radii centers.
- // Double_t *r Array of signed radii values.
- // Double_t *ths Array of starting angles [degrees].
- // Double_t *the Array of ending angles [degrees].
- // Int_t npr The number of lines segments to aproximate the arc.
- // Outputs:
- // Int_t m The number of enetries in the arrays *xp[npr+1]
- // and *yp[npr+1].
- // Double_t **xp Array of x coordinate values of the line segments
- // which make up the SPD support sector shape.
- // Double_t **yp Array of y coordinate values of the line segments
- // which make up the SPD support sector shape.
- // Return:
- // none.
- Int_t i,k;
- Double_t t,t0,t1;
+ // redefine some of the points already defined above
+ // in the format of arrays (???)
+ const Int_t ksecNPoints = (ksecNPointsPerRadii + 1) * ksecNRadii + 8;
+ Double_t secX[ksecNRadii] = {
+ ksecX0, ksecX1, -1000.0,
+ ksecX2, ksecX3, -1000.0,
+ ksecX4, ksecX5, -1000.0,
+ ksecX6, ksecX7, -1000.0,
+ ksecX8, ksecX9, -1000.0,
+ ksecX10, ksecX11, -1000.0,
+ ksecX12, -1000.0
+ };
+ Double_t secY[ksecNRadii] = {
+ ksecY0, ksecY1, -1000.0,
+ ksecY2, ksecY3, -1000.0,
+ ksecY4, ksecY5, -1000.0,
+ ksecY6, ksecY7, -1000.0,
+ ksecY8, ksecY9, -1000.0,
+ ksecY10, ksecY11, -1000.0,
+ ksecY12, -1000.0
+ };
+ Double_t secR[ksecNRadii] = {
+ ksecR0, ksecR1, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR2, ksecR3, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR4, ksecR5, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR6, ksecR7, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR8, ksecR9, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR10, ksecR11, -.5 * ksecDipLength - ksecDipRadii,
+ ksecR12, ksecR13
+ };
+ /*
+ Double_t secDip[ksecNRadii] = {
+ 0., 0., ksecDip0, 0., 0., ksecDip1,
+ 0., 0., ksecDip2, 0., 0., ksecDip3,
+ 0., 0., ksecDip4, 0., 0., ksecDip5,
+ 0., 0.
+ };
+ */
+ Double_t secX2[ksecNRadii];
+ Double_t secY2[ksecNRadii];
+ Double_t secR2[ksecNRadii] = {
+ ksecR0, ksecR1, ksecRCoolOut,
+ ksecR2, ksecR3, ksecRCoolOut,
+ ksecR4, ksecR5, ksecRCoolOut,
+ ksecR6, ksecR7, ksecRCoolOut,
+ ksecR8, ksecR9, ksecRCoolOut,
+ ksecR10, ksecR11, ksecRCoolOut,
+ ksecR12, ksecR13
+ };
+ Double_t secDip2[ksecNCoolingTubeDips] = {
+ ksecDl1, ksecDl2, ksecDl3,
+ ksecDl4, ksecDl5, ksecDl6
+ };
+ Double_t secX3[ksecNRadii];
+ Double_t secY3[ksecNRadii];
+ const Int_t ksecDipIndex[ksecNCoolingTubeDips] = {2, 5, 8, 11, 14, 17};
+ Double_t secAngleStart[ksecNRadii];
+ Double_t secAngleEnd[ksecNRadii];
+ Double_t secAngleStart2[ksecNRadii];
+ Double_t secAngleEnd2[ksecNRadii];
+ Double_t secAngleTurbo[ksecNCoolingTubeDips] = {0., 0., 0., 0., 0., 0.0};
+ //Double_t secAngleStart3[ksecNRadii];
+ //Double_t secAngleEnd3[ksecNRadii];
+ Double_t xpp[ksecNPoints], ypp[ksecNPoints];
+ Double_t xpp2[ksecNPoints], ypp2[ksecNPoints];
+ Double_t *xp[ksecNRadii], *xp2[ksecNRadii];
+ Double_t *yp[ksecNRadii], *yp2[ksecNRadii];
+ TGeoXtru *sA0, *sA1, *sB0, *sB1;
+ TGeoEltu *sTA0, *sTA1;
+ TGeoTube *sTB0, *sTB1; //,*sM0;
+ TGeoRotation *rot;
+ TGeoTranslation *trans;
+ TGeoCombiTrans *rotrans;
+ Double_t t, t0, t1, a, b, x0, y0, x1, y1;
+ Int_t i, j, k, m;
+ Bool_t tst;
- m = n*(npr+1);
- if(GetDebug(2)){
- cout <<" X \t Y \t R \t S \t E"<< m <<endl;
- for(i=0;i<n;i++){
- cout <<"{"<< xc[i] <<",";
- cout << yc[i] <<",";
- cout << r[i] <<",";
- cout << ths[i] <<",";
- cout << the[i] <<"},"<< endl;
- } // end for i
- } // end if GetDebug
- //
- if(GetDebug(3)) cout <<"Double_t sA0 = ["<< n*(npr+1)+1<<"][";
- if(GetDebug(4)) cout <<"3]{";
- else if(GetDebug(3)) cout <<"2]{";
- t0 = (Double_t)npr;
- for(i=0;i<n;i++){
- t1 = (the[i]-ths[i])/t0;
- if(GetDebug(5)) cout<<"t1="<< t1<<endl;
- for(k=0;k<=npr;k++){
- t=ths[i]+((Double_t)k)*t1;
- xp[i][k] = TMath::Abs(r[i])*CosD(t)+xc[i];
- yp[i][k] = TMath::Abs(r[i])*SinD(t)+yc[i];
- if(GetDebug(3)){
- cout << "{"<<xp[i][k]<<","<<yp[i][k];
- if(GetDebug(4)) cout <<","<<t;
- cout <<"},";
- } // end if GetDebug
- } // end for k
- if(GetDebug(3)) cout << endl;
- } // end of i
- if(GetDebug(3)) cout<<"{"<<xp[0][0]<<","<<yp[0][0];
- if(GetDebug(4)) cout<<","<< ths[0];
- if(GetDebug(3)) cout<<"}}"<<endl;
- //
- return;
-}
-//----------------------------------------------------------------------
-void AliITSv11GeometrySPD::CreateFigure0(const Char_t *filepath,
- const Char_t *type,
- TGeoManager *mgr){
- // Creates Figure 0 for the documentation of this class. In this
- // specific case, it creates the X,Y cross section of the SPD suport
- // section, center and ends. The output is written to a standard
- // file name to the path specificed.
- // Inputs:
- // const Char_t *filepath Path where the figure is to be drawn
- // const Char_t *type The type of file, default is gif.
- // TGeoManager *mgr The TGeoManager default gGeoManager
- // Output:
- // none.
- // Return:
- // none.
- TGeoXtru *sA0,*sA1,*sB0,*sB1;
- //TPolyMarker *pmA,*pmB;
- TPolyLine plA0,plA1,plB0,plB1;
- TCanvas *canvas;
- TLatex txt;
- Double_t x=0.0,y=0.0;
- Int_t i,kNRadii=6;
+ if(!moth) {
+ AliError("Container volume (argument) is NULL");
+ return;
+ }
+ for(i = 0; i < ksecNRadii; i++) {
+ xp[i] = &(xpp[i*(ksecNPointsPerRadii+1)]);
+ yp[i] = &(ypp[i*(ksecNPointsPerRadii+1)]);
+ xp2[i] = &(xpp2[i*(ksecNPointsPerRadii+1)]);
+ yp2[i] = &(ypp2[i*(ksecNPointsPerRadii+1)]);
+ secX2[i] = secX[i];
+ secY2[i] = secY[i];
+ secX3[i] = secX[i];
+ secY3[i] = secY[i];
+ }
+
+ // find starting and ending angles for all but cooling tube sections
+ secAngleStart[0] = 0.5 * ksecAngleSide13;
+ for(i = 0; i < ksecNRadii - 2; i++) {
+ tst = kFALSE;
+ for(j = 0; j < ksecNCoolingTubeDips; j++) tst = (tst || i == ksecDipIndex[j]);
+ if (tst) continue;
+ tst = kFALSE;
+ for(j = 0; j < ksecNCoolingTubeDips; j++) tst = (tst || (i+1) == ksecDipIndex[j]);
+ if (tst) j = i+2; else j = i+1;
+ AnglesForRoundedCorners(secX[i], secY[i], secR[i], secX[j], secY[j], secR[j], t0, t1);
+ secAngleEnd[i] = t0;
+ secAngleStart[j] = t1;
+ if(secR[i] > 0.0 && secR[j] > 0.0) {
+ if(secAngleStart[i] > secAngleEnd[i]) secAngleEnd[i] += 360.0;
+ }
+ secAngleStart2[i] = secAngleStart[i];
+ secAngleEnd2[i] = secAngleEnd[i];
+ } // end for i
+ secAngleEnd[ksecNRadii-2] = secAngleStart[ksecNRadii-2]
+ + (secAngleEnd[ksecNRadii-5] - secAngleStart[ksecNRadii-5]);
+ if (secAngleEnd[ksecNRadii-2] < 0.0) secAngleEnd[ksecNRadii-2] += 360.0;
+ secAngleStart[ksecNRadii-1] = secAngleEnd[ksecNRadii-2] - 180.0;
+ secAngleEnd[ksecNRadii-1] = secAngleStart[0];
+ secAngleStart2[ksecNRadii-2] = secAngleStart[ksecNRadii-2];
+ secAngleEnd2[ksecNRadii-2] = secAngleEnd[ksecNRadii-2];
+ secAngleStart2[ksecNRadii-1] = secAngleStart[ksecNRadii-1];
+ secAngleEnd2[ksecNRadii-1] = secAngleEnd[ksecNRadii-1];
+
+ // find location of circle last rounded corner.
+ i = 0;
+ j = ksecNRadii - 2;
+ t0 = TanD(secAngleStart[i]-90.);
+ t1 = TanD(secAngleEnd[j]-90.);
+ t = secY[i] - secY[j];
+ // NOTE: secR[i=0] < 0; secR[j=18] > 0; and secR[j+1=19] < 0
+ t += (-secR[i]+secR[j+1]) * SinD(secAngleStart[i]);
+ t -= (secR[j]-secR[j+1]) * SinD(secAngleEnd[j]);
+ t += t1 * secX[j] - t0*secX[i];
+ t += t1 * (secR[j] - secR[j+1]) * CosD(secAngleEnd[j]);
+ t -= t0 * (-secR[i]+secR[j+1]) * CosD(secAngleStart[i]);
+ secX[ksecNRadii-1] = t / (t1-t0);
+ secY[ksecNRadii-1] = TanD(90. + 0.5*ksecAngleSide13) * (secX[ksecNRadii-1] - secX[0]) + secY[0];
+ secX2[ksecNRadii-1] = secX[ksecNRadii-1];
+ secY2[ksecNRadii-1] = secY[ksecNRadii-1];
+ secX3[ksecNRadii-1] = secX[ksecNRadii-1];
+ secY3[ksecNRadii-1] = secY[ksecNRadii-1];
+
+ // find location of cooling tube centers
+ for(i = 0; i < ksecNCoolingTubeDips; i++) {
+ j = ksecDipIndex[i];
+ x0 = secX[j-1] + TMath::Abs(secR[j-1]) * CosD(secAngleEnd[j-1]);
+ y0 = secY[j-1] + TMath::Abs(secR[j-1]) * SinD(secAngleEnd[j-1]);
+ x1 = secX[j+1] + TMath::Abs(secR[j+1]) * CosD(secAngleStart[j+1]);
+ y1 = secY[j+1] + TMath::Abs(secR[j+1]) * SinD(secAngleStart[j+1]);
+ t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
+ t = secDip2[i] / t0;
+ a = x0+(x1-x0) * t;
+ b = y0+(y1-y0) * t;
+ if(i == 0) {
+ // get location of tube center->Surface for locating
+ // this sector around the beam pipe.
+ // This needs to be double checked, but I need my notes for that.
+ // (Bjorn Nilsen)
+ xAAtubeCenter0 = x0 + (x1 - x0) * t * 0.5;
+ yAAtubeCenter0 = y0 + (y1 - y0) * t * 0.5;
+ }
+ if(a + b*(a - x0) / (b - y0) > 0.0) {
+ secX[j] = a + TMath::Abs(y1-y0) * 2.0 * ksecDipRadii/t0;
+ secY[j] = b - TMath::Sign(2.0*ksecDipRadii,y1-y0) * (x1-x0)/t0;
+ secX2[j] = a + TMath::Abs(y1-y0) * ksecTl/t0;
+ secY2[j] = b - TMath::Sign(ksecTl,y1-y0) * (x1-x0) / t0;
+ secX3[j] = a + TMath::Abs(y1-y0) * (2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY)/t0;
+ secY3[j] = b - TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,y1-y0)*(x1-x0)/t0;
+ }
+ else {
+ secX[j] = a - TMath::Abs(y1-y0)*2.0*ksecDipRadii/t0;
+ secY[j] = b + TMath::Sign(2.0*ksecDipRadii,y1-y0)*(x1-x0)/t0;
+ secX2[j] = a - TMath::Abs(y1-y0)*ksecTl/t0;
+ secY2[j] = b + TMath::Sign(ksecTl,y1-y0)*(x1-x0)/t0;
+ secX3[j] = a - TMath::Abs(y1-y0)*(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY)/t0;
+ secY3[j] = b + TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,y1-y0)*(x1-x0)/t0;
+ }
+
+ // Set up Start and End angles to correspond to start/end of dips.
+ t1 = (secDip2[i]-TMath::Abs(secR[j])) / t0;
+ secAngleStart[j] = TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],x0+(x1-x0)*t1-secX[j]);
+ if (secAngleStart[j]<0.0) secAngleStart[j] += 360.0;
+ secAngleStart2[j] = secAngleStart[j];
+ t1 = (secDip2[i]+TMath::Abs(secR[j]))/t0;
+ secAngleEnd[j] = TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],x0+(x1-x0)*t1-secX[j]);
+ if (secAngleEnd[j]<0.0) secAngleEnd[j] += 360.0;
+ secAngleEnd2[j] = secAngleEnd[j];
+ if (secAngleEnd[j]>secAngleStart[j]) secAngleEnd[j] -= 360.0;
+ secR[j] = TMath::Sqrt(secR[j]*secR[j]+4.0*ksecDipRadii*ksecDipRadii);
+ } // end for i
+
+ // Special cases
+ secAngleStart2[8] -= 360.;
+ secAngleStart2[11] -= 360.;
+
+ SPDsectorShape(ksecNRadii, secX, secY, secR, secAngleStart, secAngleEnd,
+ ksecNPointsPerRadii, m, xp, yp);
+
+ // Fix up dips to be square.
+ for(i = 0; i < ksecNCoolingTubeDips; i++) {
+ j = ksecDipIndex[i];
+ t = 0.5*ksecDipLength+ksecDipRadii;
+ t0 = TMath::RadToDeg()*TMath::ATan(2.0*ksecDipRadii/t);
+ t1 = secAngleEnd[j] + t0;
+ t0 = secAngleStart[j] - t0;
+ x0 = xp[j][1] = secX[j] + t*CosD(t0);
+ y0 = yp[j][1] = secY[j] + t*SinD(t0);
+ x1 = xp[j][ksecNPointsPerRadii-1] = secX[j] + t*CosD(t1);
+ y1 = yp[j][ksecNPointsPerRadii-1] = secY[j] + t*SinD(t1);
+ t0 = 1./((Double_t)(ksecNPointsPerRadii-2));
+ for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
+ // extra points spread them out.
+ t = ((Double_t)(k-1)) * t0;
+ xp[j][k] = x0+(x1-x0) * t;
+ yp[j][k] = y0+(y1-y0) * t;
+ } // end for k
+ secAngleTurbo[i] = -TMath::RadToDeg() * TMath::ATan2(y1-y0, x1-x0);
+ if(GetDebug(3)) {
+ AliInfo(Form("i=%d -- angle=%f -- x0,y0=(%f, %f) -- x1,y1=(%f, %f)", i, secAngleTurbo[i], x0, y0, x1, y1));
+ }
+ } // end for i
+ sA0 = new TGeoXtru(2);
+ sA0->SetName("ITS SPD Carbon fiber support Sector A0");
+ sA0->DefinePolygon(m, xpp, ypp);
+ sA0->DefineSection(0, -ksecDz);
+ sA0->DefineSection(1, ksecDz);
+
+ // store the edges of each XY segment which defines
+ // one of the plane zones where staves will have to be placed
+ fSPDsectorX0.Set(ksecNCoolingTubeDips);
+ fSPDsectorY0.Set(ksecNCoolingTubeDips);
+ fSPDsectorX1.Set(ksecNCoolingTubeDips);
+ fSPDsectorY1.Set(ksecNCoolingTubeDips);
+ Int_t ixy0, ixy1;
+ for(i = 0; i < ksecNCoolingTubeDips; i++) {
+ // Find index in xpp[] and ypp[] corresponding to where the
+ // SPD ladders are to be attached. Order them according to
+ // the ALICE numbering schema. Using array of indexes (+-1 for
+ // cooling tubes. For any "bend/dip/edge, there are
+ // ksecNPointsPerRadii+1 points involved.
+ if(i == 0) j = 1;
+ else if (i == 1) j = 0;
+ else j = i;
+ ixy0 = (ksecDipIndex[j]-1) * (ksecNPointsPerRadii+1) + (ksecNPointsPerRadii);
+ ixy1 = (ksecDipIndex[j]+1) * (ksecNPointsPerRadii+1);
+ fSPDsectorX0[i] = sA0->GetX(ixy0);
+ fSPDsectorY0[i] = sA0->GetY(ixy0);
+ fSPDsectorX1[i] = sA0->GetX(ixy1);
+ fSPDsectorY1[i] = sA0->GetY(ixy1);
+ }
+
+ //printf("SectorA#%d ",0);
+ InsidePoint(xpp[m-1], ypp[m-1], xpp[0], ypp[0], xpp[1], ypp[1], ksecCthick, xpp2[0], ypp2[0]);
+ for(i = 1; i < m - 1; i++) {
+ j = i / (ksecNPointsPerRadii+1);
+ //printf("SectorA#%d ",i);
+ InsidePoint(xpp[i-1], ypp[i-1], xpp[i], ypp[i], xpp[i+1], ypp[i+1], ksecCthick, xpp2[i], ypp2[i]);
+ }
+ //printf("SectorA#%d ",m);
+ InsidePoint(xpp[m-2], ypp[m-2], xpp[m-1], ypp[m-1], xpp[0], ypp[0], ksecCthick, xpp2[m-1], ypp2[m-1]);
+ // Fix center value of cooling tube dip and
+ // find location of cooling tube centers
+ for(i = 0; i < ksecNCoolingTubeDips; i++) {
+ j = ksecDipIndex[i];
+ x0 = xp2[j][1];
+ y0 = yp2[j][1];
+ x1 = xp2[j][ksecNPointsPerRadii-1];
+ y1 = yp2[j][ksecNPointsPerRadii-1];
+ t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
+ t = secDip2[i]/t0;
+ for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
+ // extra points spread them out.
+ t = ((Double_t)(k-1)) * t0;
+ xp2[j][k] = x0+(x1-x0) * t;
+ yp2[j][k] = y0+(y1-y0) * t;
+ }
+ } // end for i
+ sA1 = new TGeoXtru(2);
+ sA1->SetName("ITS SPD Carbon fiber support Sector Air A1");
+ sA1->DefinePolygon(m, xpp2, ypp2);
+ sA1->DefineSection(0, -ksecDz);
+ sA1->DefineSection(1, ksecDz);
+
+ // Error in TGeoEltu. Semi-axis X must be < Semi-axis Y (?).
+ sTA0 = new TGeoEltu("ITS SPD Cooling Tube TA0", 0.5 * ksecCoolTubeFlatY, 0.5 * ksecCoolTubeFlatX, ksecDz);
+ sTA1 = new TGeoEltu("ITS SPD Cooling Tube coolant TA1",
+ sTA0->GetA() - ksecCoolTubeThick,
+ sTA0->GetB()-ksecCoolTubeThick,ksecDz);
+
+ SPDsectorShape(ksecNRadii, secX2, secY2, secR2, secAngleStart2, secAngleEnd2,
+ ksecNPointsPerRadii, m, xp, yp);
- if(strcmp(filepath,"")){
- Error("CreateFigure0","filepath=%s type=%s",filepath,type);
- } // end if
- //
- sA0 = (TGeoXtru*) mgr->GetVolume(
- "ITSSPDCarbonFiberSupportSectorA0_1")->GetShape();
- sA1 = (TGeoXtru*) mgr->GetVolume(
- "ITSSPDCarbonFiberSupportSectorAirA1_1")->GetShape();
- sB0 = (TGeoXtru*) mgr->GetVolume(
- "ITSSPDCarbonFiberSupportSectorEndB0_1")->GetShape();
- sB1 = (TGeoXtru*) mgr->GetVolume(
- "ITSSPDCarbonFiberSupportSectorEndAirB1_1")->GetShape();
- //pmA = new TPolyMarker();
- //pmA.SetMarkerStyle(2); // +
- //pmA.SetMarkerColor(7); // light blue
- //pmB = new TPolyMarker();
- //pmB.SetMarkerStyle(5); // X
- //pmB.SetMarkerColor(6); // purple
- plA0.SetPolyLine(sA0->GetNvert());
- plA0.SetLineColor(1); // black
- plA0.SetLineStyle(1);
- plA1.SetPolyLine(sA1->GetNvert());
- plA1.SetLineColor(2); // red
- plA1.SetLineStyle(1);
- plB0.SetPolyLine(sB0->GetNvert());
- plB0.SetLineColor(3); // Green
- plB0.SetLineStyle(2);
- plB1.SetPolyLine(sB1->GetNvert());
- plB1.SetLineColor(4); // Blue
- plB1.SetLineStyle(2);
- //for(i=0;i<kNRadii;i++) pmA.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
- //for(i=0;i<kNRadii;i++) pmB.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
- for(i=0;i<sA0->GetNvert();i++) plA0.SetPoint(i,sA0->GetX(i),sA0->GetY(i));
- for(i=0;i<sA1->GetNvert();i++) plA1.SetPoint(i,sA1->GetX(i),sA1->GetY(i));
- for(i=0;i<sB0->GetNvert();i++) plB0.SetPoint(i,sB0->GetX(i),sB0->GetY(i));
- for(i=0;i<sB1->GetNvert();i++) plB1.SetPoint(i,sB1->GetX(i),sB1->GetY(i));
- canvas = new TCanvas("AliITSv11GeometrySPDFig0","",1000,1000);
- canvas->Range(-3.,-3.,3.,3.);
- txt.SetTextSize(0.05);
- txt.SetTextAlign(33);
- txt.SetTextColor(1);
- txt.DrawLatex(2.9,2.9,"Section A-A outer Carbon Fiber surface");
- txt.SetTextColor(2);
- txt.DrawLatex(2.9,2.5,"Section A-A Inner Carbon Fiber surface");
- txt.SetTextColor(3);
- txt.DrawLatex(2.9,2.1,"Section E-E outer Carbon Fiber surface");
- txt.SetTextColor(4);
- txt.DrawLatex(2.9,1.7,"Section E-E Inner Carbon Fiber surface");
- plA0.Draw();
- plA1.Draw();
- plB0.Draw();
- plB1.Draw();
- //pmA.Draw();
- //pmB.Draw();
- //
- x = 1.0;
- y = -2.5;
- Char_t chr[3];
- for(i=0;i<kNRadii;i++){
- sprintf(chr,"%2d",i);txt.DrawLatex(x-0.1,y,chr);
- sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x,y,chr);
- sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+0.5,y,chr);
- sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.0,y,chr);
- sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.5,y,chr);
- sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+2.0,y,chr);
- if(kTRUE) txt.DrawLatex(x+2.5,y,"A-A/E-E");
- else txt.DrawLatex(x+2.5,y,"E-E");
- } // end for i
- txt.DrawLatex(x,y,"x_{c} mm");
- txt.DrawLatex(x+0.5,y,"y_{c} mm");
- txt.DrawLatex(x+1.0,y,"R mm");
- txt.DrawLatex(x+1.5,y,"#theta_{start}^{#circle}");
- txt.DrawLatex(x+2.0,y,"#theta_{end}^{#circle}");
- txt.DrawLatex(x+2.5,y,"Section");
- //
-}
+ sB0 = new TGeoXtru(2);
+ sB0->SetName("ITS SPD Carbon fiber support Sector End B0");
+ sB0->DefinePolygon(m, xpp, ypp);
+ sB0->DefineSection(0, ksecDz);
+ sB0->DefineSection(1, ksecDz + ksecZEndLen);
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateLadder(Int_t layer,Double_t &length,
- Double_t &width,Double_t &thickness, TGeoManager *mgr){
- // Creates the "ladder" = silicon sensor + 5 chips.
- // All parts are implemented as TGeoBBox and inserted
- // into a container which is the return value of this method.
- // The sizes of the components come from drawings
- // of the Technical office of INFN Padova.
- // Due to the requirement to specify the sensitive volume
- // separately from the rest, the sensor is implemented as the
- // sum of a central sensitive part + a guard ring.
- // Also the bump-bondings are added in form of small cylinders.
+ //printf("SectorB#%d ",0);
+ InsidePoint(xpp[m-1], ypp[m-1], xpp[0], ypp[0], xpp[1], ypp[1], ksecCthick2, xpp2[0], ypp2[0]);
+ for(i = 1; i < m - 1; i++) {
+ t = ksecCthick2;
+ for(k = 0; k < ksecNCoolingTubeDips; k++)
+ if((i/(ksecNPointsPerRadii+1))==ksecDipIndex[k])
+ if(!(ksecDipIndex[k]*(ksecNPointsPerRadii+1) == i ||
+ ksecDipIndex[k]*(ksecNPointsPerRadii+1) + ksecNPointsPerRadii == i))
+ t = ksecRCoolOut-ksecRCoolIn;
+ //printf("SectorB#%d ",i);
+ InsidePoint(xpp[i-1], ypp[i-1], xpp[i], ypp[i], xpp[i+1], ypp[i+1], t, xpp2[i], ypp2[i]);
+ }
+ //printf("SectorB#%d ",m);
+ InsidePoint(xpp[m-2], ypp[m-2], xpp[m-1], ypp[m-1], xpp[0], ypp[0], ksecCthick2, xpp2[m-1], ypp2[m-1]);
+ sB1 = new TGeoXtru(2);
+ sB1->SetName("ITS SPD Carbon fiber support Sector Air End B1");
+ sB1->DefinePolygon(m, xpp2, ypp2);
+ sB1->DefineSection(0, ksecDz);
+ sB1->DefineSection(1, ksecDz + ksecLen);
+ sTB0 = new TGeoTube("ITS SPD Cooling Tube End TB0", 0.0,
+ 0.5 * ksecCoolTubeROuter, 0.5 * ksecLen);
+ sTB1 = new TGeoTube("ITS SPD Cooling Tube End coolant TB0", 0.0,
+ sTB0->GetRmax() - ksecCoolTubeThick, 0.5 * ksecLen);
+
+ if(GetDebug(3)) {
+ if(medSPDcf) medSPDcf->Dump(); else AliInfo("medSPDcf = 0");
+ if(medSPDss) medSPDss->Dump(); else AliInfo("medSPDss = 0");
+ if(medSPDair) medSPDair->Dump(); else AliInfo("medSPDAir = 0");
+ if(medSPDcoolfl) medSPDcoolfl->Dump(); else AliInfo("medSPDcoolfl = 0");
+ sA0->InspectShape();
+ sA1->InspectShape();
+ sB0->InspectShape();
+ sB1->InspectShape();
+ }
+
+ // create the assembly of the support and place staves on it
+ TGeoVolumeAssembly *vM0 = new TGeoVolumeAssembly("ITSSPDSensitiveVirtualvolumeM0");
+ StavesInSector(vM0);
+ // create other volumes with some graphical settings
+ TGeoVolume *vA0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorA0", sA0, medSPDcf);
+ vA0->SetVisibility(kTRUE);
+ vA0->SetLineColor(4); // Blue
+ vA0->SetLineWidth(1);
+ vA0->SetFillColor(vA0->GetLineColor());
+ vA0->SetFillStyle(4010); // 10% transparent
+ TGeoVolume *vA1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorAirA1", sA1, medSPDair);
+ vA1->SetVisibility(kTRUE);
+ vA1->SetLineColor(7); // light Blue
+ vA1->SetLineWidth(1);
+ vA1->SetFillColor(vA1->GetLineColor());
+ vA1->SetFillStyle(4090); // 90% transparent
+ TGeoVolume *vTA0 = new TGeoVolume("ITSSPDCoolingTubeTA0", sTA0, medSPDss);
+ vTA0->SetVisibility(kTRUE);
+ vTA0->SetLineColor(1); // Black
+ vTA0->SetLineWidth(1);
+ vTA0->SetFillColor(vTA0->GetLineColor());
+ vTA0->SetFillStyle(4000); // 0% transparent
+ TGeoVolume *vTA1 = new TGeoVolume("ITSSPDCoolingTubeFluidTA1", sTA1, medSPDcoolfl);
+ vTA1->SetVisibility(kTRUE);
+ vTA1->SetLineColor(6); // Purple
+ vTA1->SetLineWidth(1);
+ vTA1->SetFillColor(vTA1->GetLineColor());
+ vTA1->SetFillStyle(4000); // 0% transparent
+ TGeoVolume *vB0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndB0", sB0, medSPDcf);
+ vB0->SetVisibility(kTRUE);
+ vB0->SetLineColor(4); // Blue
+ vB0->SetLineWidth(1);
+ vB0->SetFillColor(vB0->GetLineColor());
+ vB0->SetFillStyle(4010); // 10% transparent
+ TGeoVolume *vB1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB1", sB1, medSPDair);
+ vB1->SetVisibility(kTRUE);
+ vB1->SetLineColor(7); // light Blue
+ vB1->SetLineWidth(1);
+ vB1->SetFillColor(vB1->GetLineColor());
+ vB1->SetFillStyle(4090); // 90% transparent
+ TGeoVolume *vTB0 = new TGeoVolume("ITSSPDCoolingTubeEndTB0", sTB0, medSPDss);
+ vTB0->SetVisibility(kTRUE);
+ vTB0->SetLineColor(1); // Black
+ vTB0->SetLineWidth(1);
+ vTB0->SetFillColor(vTB0->GetLineColor());
+ vTB0->SetFillStyle(4000); // 0% transparent
+ TGeoVolume *vTB1 = new TGeoVolume("ITSSPDCoolingTubeEndFluidTB1", sTB1, medSPDcoolfl);
+ vTB1->SetVisibility(kTRUE);
+ vTB1->SetLineColor(6); // Purple
+ vTB1->SetLineWidth(1);
+ vTB1->SetFillColor(vTB1->GetLineColor());
+ vTB1->SetFillStyle(4000); // 0% transparent
+
+ // add volumes to mother container passed as argument of this method
+ moth->AddNode(vM0,1,0); // Add virtual volume to mother
+ vA0->AddNode(vA1,1,0); // Put air inside carbon fiber.
+ vB0->AddNode(vB1,1,0); // Put air inside carbon fiber.
+ vTA0->AddNode(vTA1,1,0); // Put air inside carbon fiber.
+ vTB0->AddNode(vTB1,1,0); // Put air inside carbon fiber.
+ for(i = 0; i < ksecNCoolingTubeDips; i++) {
+ x0 = secX3[ksecDipIndex[i]];
+ y0 = secY3[ksecDipIndex[i]];
+ t = 90.0 - secAngleTurbo[i];
+ trans = new TGeoTranslation("", x0, y0, 0.5 * (sB1->GetZ(0) + sB1->GetZ(1)));
+ vB1->AddNode(vTB0, i+1, trans);
+ rot = new TGeoRotation("", 0.0, 0.0, t);
+ rotrans = new TGeoCombiTrans("", x0, y0, 0.0, rot);
+ vM0->AddNode(vTA0, i+1, rotrans);
+ } // end for i
+ vM0->AddNode(vA0, 1, 0);
+ vM0->AddNode(vB0, 1, 0);
+ // Reflection.
+ vM0->AddNode(vB0, 2, new TGeoRotation("", 90., 0., 90., 90., 180., 0.));
+ if(GetDebug(3)){
+ vM0->PrintNodes();
+ vA0->PrintNodes();
+ vA1->PrintNodes();
+ vB0->PrintNodes();
+ vB1->PrintNodes();
+ vTA0->PrintNodes();
+ vTA1->PrintNodes();
+ vTB0->PrintNodes();
+ vTB1->PrintNodes();
+ }
+}
+//
+//__________________________________________________________________________________________
+Bool_t AliITSv11GeometrySPD::GetSectorMountingPoints
+(Int_t index, Double_t &x0, Double_t &y0, Double_t &x1, Double_t &y1) const
+{
+ //
+ // Returns the edges of the straight borders in the SPD sector shape,
+ // which are used to mount staves on them.
+ // Coordinate system is that of the carbon fiber sector volume.
// ---
- // Arguments:
- // - the layer which will own this ladder (MUST be 1 or 2)
- // - the used TGeoManager
+ // Index numbering is as follows:
+ // /5
+ // /\/4
+ // 1\ \/3
+ // 0|___\/2
// ---
- // Returns:
- // - the container TGeoBBox (return value)
- // - the size of the container box (arguments passed by reference)
+ // Arguments [the ones passed by reference contain output values]:
+ // Int_t index --> location index according to above scheme [0-5]
+ // Double_t &x0 --> (by ref) x0 location or the ladder sector [cm]
+ // Double_t &y0 --> (by ref) y0 location of the ladder sector [cm]
+ // Double_t &x1 --> (by ref) x1 location or the ladder sector [cm]
+ // Double_t &y1 --> (by ref) y1 location of the ladder sector [cm]
+ // TGeoManager *mgr --> The TGeo builder
// ---
- // NOTE 1
- // Here and in the other methods which contribute to the stave
- // definition a convention is used for the naming of the three
- // dimensions of the volumes:
- // - 'length' refers to the size in the Z direction of the
- // ALICE reference frame
- // - 'width' refers to the "large" dimension orthogonal to
- // Z axis in the local reference frame of the
- // object being implemented (e.g., 15.95 mm for
- // the chips)
- // - 'thickness' refers to the "small" dimension orthogonal to
- // Z axis, which is also the direction along which
- // the components are superimposed on each other
+ // The location is described by a line going from (x0, y0) to (x1, y1)
// ---
- // NOTE 2
- // all sizes taken are expressed in mm in drawings, and this is
- // kept as is, to avoid confusion the conversion is made
- // multiplying by the conversion factor
+ // Returns kTRUE if no problems encountered.
+ // Returns kFALSE if a problem was encountered (e.g.: shape not found).
+ //
- // ** CRITICAL CHECK **
+ Int_t isize = fSPDsectorX0.GetSize();
+ x0 = x1 = y0 = y1 = 0.0;
+ if(index < 0 || index > isize) {
+ AliError(Form("index = %d: allowed 0 --> %", index, isize));
+ return kFALSE;
+ }
+
+ x0 = fSPDsectorX0[index];
+ x1 = fSPDsectorX1[index];
+ y0 = fSPDsectorY0[index];
+ y1 = fSPDsectorY1[index];
+
+ return kTRUE;
+}
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::SPDsectorShape
+(Int_t n,
+ const Double_t *xc, const Double_t *yc, const Double_t *r,
+ const Double_t *ths, const Double_t *the,
+ Int_t npr, Int_t &m, Double_t **xp, Double_t **yp) const
+{
+
+ // Code to compute the points that make up the shape of the SPD
+ // Carbon fiber support sections
+ // Inputs:
+ // Int_t n size of arrays xc,yc, and r.
+ // Double_t *xc array of x values for radii centers.
+ // Double_t *yc array of y values for radii centers.
+ // Double_t *r array of signed radii values.
+ // Double_t *ths array of starting angles [degrees].
+ // Double_t *the array of ending angles [degrees].
+ // Int_t npr the number of lines segments to aproximate the arc.
+ // Outputs (arguments passed by reference):
+ // Int_t m the number of enetries in the arrays *xp[npr+1] and *yp[npr+1].
+ // Double_t **xp array of x coordinate values of the line segments
+ // which make up the SPD support sector shape.
+ // Double_t **yp array of y coordinate values of the line segments
+ // which make up the SPD support sector shape.
+ //
+
+ Int_t i, k;
+ Double_t t, t0, t1;
+
+ m = n*(npr + 1);
+ if(GetDebug(2)) {
+ cout <<" X \t Y \t R \t S \t E" << m << endl;
+ for(i = 0; i < n; i++) {
+ cout << "{" << xc[i] << ", ";
+ cout << yc[i] << ", ";
+ cout << r[i] << ", ";
+ cout << ths[i] << ", ";
+ cout << the[i] << "}, " << endl;
+ }
+ }
+
+ if (GetDebug(3)) cout << "Double_t sA0 = [" << n*(npr+1)+1<<"][";
+ if (GetDebug(4)) cout << "3] {";
+ else if(GetDebug(3)) cout <<"2] {";
+ t0 = (Double_t)npr;
+ for(i = 0; i < n; i++) {
+ t1 = (the[i] - ths[i]) / t0;
+ if(GetDebug(5)) cout << "t1 = " << t1 << endl;
+ for(k = 0; k <= npr; k++) {
+ t = ths[i] + ((Double_t)k) * t1;
+ xp[i][k] = TMath::Abs(r[i]) * CosD(t) + xc[i];
+ yp[i][k] = TMath::Abs(r[i]) * SinD(t) + yc[i];
+ if(GetDebug(3)) {
+ cout << "{" << xp[i][k] << "," << yp[i][k];
+ if (GetDebug(4)) cout << "," << t;
+ cout << "},";
+ } // end if GetDebug
+ } // end for k
+ if(GetDebug(3)) cout << endl;
+ } // end of i
+ if(GetDebug(3)) cout << "{" << xp[0][0] << ", " << yp[0][0];
+ if(GetDebug(4)) cout << "," << ths[0];
+ if(GetDebug(3)) cout << "}}" << endl;
+}
+//
+//__________________________________________________________________________________________
+TGeoVolume* AliITSv11GeometrySPD::CreateLadder
+(Int_t layer,TArrayD &sizes, TGeoManager *mgr) const
+{
+ // Creates the "ladder" = silicon sensor + 5 chips.
+ // Returns a TGeoVolume containing the following components:
+ // - the sensor (TGeoBBox), whose name depends on the layer
+ // - 5 identical chips (TGeoBBox)
+ // - a guard ring around the sensor (subtraction of TGeoBBoxes),
+ // which is separated from the rest of sensor because it is not
+ // a sensitive part
+ // - bump bondings (TGeoBBox stripes for the whole width of the
+ // sensor, one per column).
+ // ---
+ // Arguments:
+ // 1 - the owner layer (MUST be 1 or 2 or a fatal error is raised)
+ // 2 - a TArrayD passed by reference, which contains some relevant
+ // sizes of this object:
+ // size[0] = 'thickness' (the direction orthogonal to the ALICE
+ // Z axis, along which the different parts of the
+ // stave are superimposed on each other)
+ // size[1] = 'length' (the direction along the ALICE Z axis)
+ // size[2] = 'width' (the direction orthogonal to both the
+ // above ones)
+ // 3 - the used TGeoManager
+
+ // ** CRITICAL CHECK **
// layer number can be ONLY 1 or 2
if (layer != 1 && layer != 2) AliFatal("Layer number MUST be 1 or 2");
+ // ** MEDIA **
// instantiate all required media
- TGeoMedium *medAir = mgr->GetMedium("Air");
- TGeoMedium *medSPDSiChip = mgr->GetMedium("SPD SI CHIP");
- TGeoMedium *medSi = mgr->GetMedium("Si");
- TGeoMedium *medBumpBond = mgr->GetMedium("BumpBond");
-
- // ** Define sizes **
- // they are expressed in mm in the drawings so they require conversion
- // 'length' is in the direction of the detector length (Z axis)
- // 'thickness' is obvious
- // 'width' is in the direction orthogonal to 'width' and 'thickness'
-
+ TGeoMedium *medAir = GetMedium("AIR$",mgr);
+ TGeoMedium *medSPDSiChip = GetMedium("SPD SI CHIP$",mgr);// SPD SI CHIP
+ TGeoMedium *medSi = GetMedium("SI$",mgr);
+ TGeoMedium *medBumpBond = GetMedium("COPPER$",mgr); // ??? BumpBond
+
+ // ** SIZES **
// for the chip, also the spacing between them is required
Double_t chipThickness = fgkmm * 0.150;
Double_t chipWidth = fgkmm * 15.950;
Double_t chipLength = fgkmm * 13.600;
- Double_t chipSpacing = fgkmm * 0.400;
-
+ Double_t chipSpacing = fgkmm * 0.400;
// for the sensor, we define the area of sensitive volume
// while the guard ring is added as a separate piece
Double_t sensThickness = fgkmm * 0.200;
Double_t sensLength = fgkmm * 69.600;
- Double_t sensWidth = fgkmm * 13.920;
+ Double_t sensWidth = fgkmm * 12.800;
Double_t guardRingWidth = fgkmm * 0.560;
-
// bump bond is defined as a small stripe of height = 0.012 mm
// and a suitable width to keep the same volume it has
// before being compressed (a line of spheres of 0.025 mm radius)
Double_t bbLength = fgkmm * 0.042;
Double_t bbWidth = sensWidth;
Double_t bbThickness = fgkmm * 0.012;
- Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
-
- // ** Create volumes **
- // the container is the return value, and is built as a box
- // whose edges exactly enclose the stuff we inserted here,
- // filled with air. Its name depends on the layer number.
+ Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
+
+ // ** VOLUMES **
+ // for readability reasons, create references to
+ // the overall sizes which will be returned in the TArrayD
+ if (sizes.GetSize() != 3) sizes.Set(3);
+ Double_t &thickness = sizes[0];
+ Double_t &length = sizes[1];
+ Double_t &width = sizes[2];
+ // the container is a box which exactly enclose all the stuff;
+ // it is filled with air and named according to the layer number
width = chipWidth;
length = sensLength + 2.0*guardRingWidth;
thickness = sensThickness + chipThickness + bbThickness;
- TGeoVolume *container = mgr->MakeBox(Form("LAY%d_LADDER", layer),
- medAir, 0.5*thickness, 0.5*width, 0.5*length);
- // the chip is a simple box:
- TGeoVolume *volChip = mgr->MakeBox("CHIP", medSPDSiChip,
- 0.5*chipThickness, 0.5*chipWidth, 0.5*chipLength);
-
- // the sensor is the union of a box and a border, to separate
- // sensitive part from the rest the sensitive volume (inner part)
- // is named according to the owner layer. To compute the shape
- // subtraction which is needed for this we create two shapes,
- // which are two boxes with the same center. The smaller one is
- // then used to define the sensor, while the subtraction of the two
- // is used for the guard ring.
- TGeoBBox *shSens = new TGeoBBox(0.5*sensThickness, 0.5*sensWidth,
- 0.5*sensLength);
- TGeoBBox *shIn = new TGeoBBox(sensThickness, 0.5*sensWidth,
- 0.5*sensLength);
- TGeoBBox *shOut = new TGeoBBox(0.5*sensThickness,
- 0.5*sensWidth + guardRingWidth,
- 0.5*sensLength + guardRingWidth);
+ //TGeoVolume *container = mgr->MakeBox(Form("LAY%d_LADDER", layer),
+ // medAir, 0.5*width, 0.5*thickness, 0.5*length);
+ // We must have the x coordinate of this container conresponding to
+ // the x corrdinate of the sensitive volume. In order to do that we
+ // are going to create the container with a local reference system
+ // that is not in the middle of the box. This need to call directly
+ // the constructor of the shape, with an option :
+ Double_t xSens = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
+ Double_t originShift[3] = {-xSens, 0., 0.};
+ TGeoBBox *shapeContainer = new TGeoBBox(0.5*width, 0.5*thickness, 0.5*length, originShift);
+ TGeoVolume *container = new TGeoVolume(Form("LAY%d_LADDER",layer), shapeContainer, medAir);
+ // the chip
+ TGeoVolume *volChip = mgr->MakeBox
+ ("CHIP", medSPDSiChip, 0.5*chipWidth, 0.5*chipThickness, 0.5*chipLength);
+ // the sensor
+ TGeoVolume *volSens = mgr->MakeBox
+ (GetSenstiveVolumeName(layer), medSi, 0.5*sensWidth, 0.5*sensThickness, 0.5*sensLength);
+ // the guard ring shape is the subtraction of two boxes with the same center.
+ TGeoBBox *shIn = new TGeoBBox(0.5*sensWidth, sensThickness, 0.5*sensLength);
+ TGeoBBox *shOut = new TGeoBBox
+ (0.5*sensWidth + guardRingWidth, 0.5*sensThickness, 0.5*sensLength + guardRingWidth);
shIn->SetName("innerBox");
shOut->SetName("outerBox");
- TGeoCompositeShape *shBorder = new TGeoCompositeShape("",
- "outerBox-innerBox");
- TGeoVolume *volSens = new TGeoVolume(Form("LAY%d_SENSOR", layer),
- shSens, medSi);
+ TGeoCompositeShape *shBorder = new TGeoCompositeShape("", "outerBox-innerBox");
TGeoVolume *volBorder = new TGeoVolume("GUARD_RING", shBorder, medSi);
-
- // one line of bumpbonds
- TGeoVolume *volBB = mgr->MakeBox("BB", medBumpBond, 0.5*bbThickness,
- 0.5*bbWidth, 0.5*bbLength);
-
+ // bump bonds for one whole column
+ TGeoVolume *volBB = mgr->MakeBox
+ ("BB", medBumpBond, 0.5*bbWidth, 0.5*bbThickness, 0.5*bbLength);
// set colors of all objects for visualization
volSens->SetLineColor(kYellow + 1);
volChip->SetLineColor(kGreen);
volBorder->SetLineColor(kYellow + 3);
-
- // translations for the chip box: direction of length and
- // thickness (moved down)
- TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
- Double_t x = 0.5 * (chipThickness - thickness);
- Double_t y = 0.0;
- Double_t z = 0.0;
- Int_t i;
- for (i = 0; i < 5; i++) {
- z = -0.5*length + guardRingWidth + (Double_t)i*chipSpacing +
- ((Double_t)(i) + 0.5)*chipLength;
- trChip[i] = new TGeoTranslation(x, y, z);
- } // end for i
-
- // translation for the sensor parts: direction of width (moved
- // to edge of container) and thickness (moved up)
- x = 0.5 * (thickness - sensThickness);
- y = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
- z = 0.0;
- TGeoTranslation *trSens = new TGeoTranslation(x, y, z);
+ // ** MOVEMENTS **
+ // translation for the sensor parts: direction of width and
+ // thickness (moved up)
+ Double_t ySens = 0.5 * (thickness - sensThickness);
+ Double_t zSens = 0.0;
+ // We want that the x of the ladder is the same as the one of its sensitive volume
+ TGeoTranslation *trSens = new TGeoTranslation(xSens - xSens, ySens, zSens);
// translation for the bump bonds:
// keep same y used for sensors, but change the Z
TGeoTranslation *trBB[160];
- //x = 0.5 * (thickness - bbThickness) + 0.5*sensThickness;
- x = 0.5 * (thickness - bbThickness) - sensThickness;
- z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
+ Double_t x = xSens - xSens;
+ Double_t y = 0.5 * (thickness - bbThickness) - sensThickness;
+ Double_t z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
+ Int_t i;
for (i = 0; i < 160; i++) {
trBB[i] = new TGeoTranslation(x, y, z);
switch(i) {
- case 31:
- case 63:
- case 95:
- case 127:
- z += fgkmm * 0.625 + fgkmm * 0.2;
- break;
- default:
- z += fgkmm * 0.425;
+ case 31:
+ case 63:
+ case 95:
+ case 127:
+ z += fgkmm * 0.625 + fgkmm * 0.2;
+ break;
+ default:
+ z += fgkmm * 0.425;
} // end switch
} // end for i
-
+ // translations for the chip box: direction of length and
+ // thickness (moved down)
+ TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
+ x = -xSens;
+ y = 0.5 * (chipThickness - thickness);
+ z = 0.0;
+ for (i = 0; i < 5; i++) {
+ z = -0.5*length + guardRingWidth
+ + (Double_t)i*chipSpacing + ((Double_t)(i) + 0.5)*chipLength;
+ trChip[i] = new TGeoTranslation(x, y, z);
+ } // end for i
+
// add nodes to container
container->AddNode(volSens, 1, trSens);
container->AddNode(volBorder, 1, trSens);
for (i = 0; i < 160; i++) container->AddNode(volBB, i, trBB[i]);
- for (i = 0; i < 5; i++){
- container->AddNode(volChip, i + 2, trChip[i]);
- } // end for i
+ for (i = 0; i < 5; i++) container->AddNode(volChip, i + 2, trChip[i]);
// return the container
return container;
}
-/*
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateGroundingFoilSingle(Bool_t kaptonLayer,
- Double_t &length, Double_t &width, Double_t &thickness, TGeoManager *mgr){
+//
+//__________________________________________________________________________________________
+TGeoVolume* AliITSv11GeometrySPD::CreateClip
+(TArrayD &sizes, TGeoManager *mgr) const
+{
//
- // Creates the grounding foil layer made in Kapton.
- // Both layers of the grounding foil have the same shape, but
- // with small differences in the size of some parts (holes,
- // overall size). The Kapton layer is a little bit wider and
- // has smaller holes.
- // ---
- // The complete object is created as the superimposition of
- // an XTRU with some holes
- // ---
- // Whenever possible, the size of the parts is parameterized with
- // variable names, even if their value is fixed according
- // to the design parameters given by engineers' drawings.
- // ---
- // Returns: a TGeoVolume object which contains all parts of this layer
+ // Creates the carbon fiber clips which are added to the central ladders.
+ // They have a complicated shape which is approximated by a TGeoXtru
+ // Implementation of a single clip over an half-stave.
+ // It has a complicated shape which is approximated to a section like this:
+ //
+ // 6
+ // /\ .
+ // 7 //\\ 5
+ // / 1\\___________________4
+ // 0 \___________________
+ // 2 3
+ // with a finite thickness for all the shape
+ // Its local reference frame is such that point A corresponds to origin.
//
- // The shape of the grounding foil is an irregular polygon, which
- // can easily be implemented as a TGeoXtru using the corners as
- // reference points:
- //
- // 0 1
- // +-----------------------------------------------------------------------------+
- // | 7 6 3 |
- // | +--------------+ +----------------+ 2
- // | O | | |
- // | 9 /-----+ 8 +------+ 4
- // | / 5
- // | 11 /--------------/ 10
- // +-------------/
- // 13 12
- //
- // in total: 14 points (X is just a referencem but is unused in
- // the implementation. The whole shape can be subdivided into
- // sectors delimited by vertical lines passing througth the
- // points in the lower part of the shape. This convention is
- // used to names their length which is different for each one
- // (the widths, instead, are common for some)
- // instantiate the media:
- // - kapton/aluminum for the pysical volumes
- TGeoMedium *material = kaptonLayer ? mgr->GetMedium("KAPTON") :
- mgr->GetMedium("AL");
-
- // label
- char type[3];
- if (kaptonLayer) {
- strcpy(type, "KP");
- thickness = fgkmm * 0.05;
- }
- else {
- strcpy(type, "AL");
- thickness = fgkmm * 0.02;
- }
-
- // define the length of all sectors (from leftmost to rightmost)
- Int_t i;
- Double_t sectorLength[] = {140.71,2.48,26.78,4.0,10.0,24.4,10.0,24.81};
- if (!kaptonLayer) {
- sectorLength[0] -= 0.2;
- sectorLength[4] -= 0.2;
- sectorLength[5] += 0.4;
- sectorLength[6] -= 0.4;
- }
- length = 0.0;
- for (i = 0; i < 8; i++) {
- sectorLength[i] *= fgkmm;
- length += sectorLength[i];
- }
-
- // as shown in the drawing, we have three different widths in
- // this shape:
- Double_t widthMax = fgkmm * 15.95;
- Double_t widthMed1 = fgkmm * 15.00;
- Double_t widthMed2 = fgkmm * 11.00;
- Double_t widthMin = fgkmm * 4.40;
- if (!kaptonLayer) {
- widthMax -= fgkmm * 0.4;
- widthMed1 -= fgkmm * 0.4;
- widthMed2 -= fgkmm * 0.4;
- widthMin -= fgkmm * 0.4;
- }
- width = widthMax;
-
- // the vertices of the polygon are arrays correctly ordered in
- // the counterclockwise direction: initially we place the point
- // 0 in the origin, and all others will be defined accordingly
- Double_t x[14], y[14];
- x[ 0] = 0.0;
- y[ 0] = 0.0;
-
- x[ 1] = x[0] + length;
- y[ 1] = 0.0;
-
- x[ 2] = x[1];
- y[ 2] = -widthMin;
-
- x[ 3] = x[2] - sectorLength[7];
- y[ 3] = y[2];
+ Double_t fullLength = fgkmm * 12.6; // = x4 - x0
+ Double_t flatLength = fgkmm * 5.4; // = x4 - x3
+ Double_t inclLongLength = fgkmm * 5.0; // = 5-6
+ Double_t inclShortLength = fgkmm * 2.0; // = 6-7
+ Double_t fullHeight = fgkmm * 2.8; // = y6 - y3
+ Double_t thickness = fgkmm * 0.2; // thickness
+ Double_t totalLength = fgkmm * 52.0; // total length in Z
+ Double_t holeSize = fgkmm * 4.0; // dimension of cubic hole inserted for pt1000
+ Double_t angle1 = 27.0; // supplementary of angle DCB
+ Double_t angle2; // angle DCB
+ Double_t angle3; // angle of GH with vertical
+
+ angle2 = 0.5 * (180.0 - angle1);
+ angle3 = 90.0 - TMath::ACos(fullLength - flatLength - inclLongLength*TMath::Cos(angle1)) * TMath::RadToDeg();
+
+ angle1 *= TMath::DegToRad();
+ angle2 *= TMath::DegToRad();
+ angle3 *= TMath::DegToRad();
- x[ 4] = x[3];
- y[ 4] = -widthMed2;
-
- x[ 5] = x[4] - sectorLength[6];
- y[ 5] = y[4];
-
- x[ 6] = x[5];
- y[ 6] = -widthMin;
-
- x[ 7] = x[6] - sectorLength[5];
- y[ 7] = y[6];
-
- x[ 8] = x[7];
- y[ 8] = -widthMed2;
-
- x[ 9] = x[8] - sectorLength[4];
- y[ 9] = y[8];
-
- x[10] = x[9] - sectorLength[3];
- y[10] = -widthMed1;
-
- x[11] = x[10] - sectorLength[2];
- y[11] = y[10];
-
- x[12] = x[11] - sectorLength[1];
- y[12] = -widthMax;
-
- x[13] = x[0];
- y[13] = -widthMax;
-
- // then, we shift all points in such a way that the origin will
- // be at the centers
- for (i = 0; i < 14; i++) {
- x[i] -= 0.5*length;
- y[i] += 0.5*width;
- }
-
- // create the shape
- char shName[200];
- sprintf(shName, "SH_%sGFOIL_FULL", type);
- TGeoXtru *shGroundFull = new TGeoXtru(2);
- shGroundFull->SetName(shName);
- shGroundFull->DefinePolygon(14, x, y);
- shGroundFull->DefineSection(0, -0.5*thickness, 0., 0., 1.0);
- shGroundFull->DefineSection(1, 0.5*thickness, 0., 0., 1.0);
-
- // this volume contains some holes which are here implemented
- // as simple boxes of fixed size, which are displaced along the
- // shape itself and then composed using the facilities of the
- // TGeo package
-
- Double_t holeLength = fgkmm * 10.00;
- Double_t holeWidth = fgkmm * 7.50;
- Double_t holeSepX0 = fgkmm * 7.05;//separation between center
- //of first hole and left border
- Double_t holeSepXC = fgkmm * 14.00;//separation between the
- // centers of two consecutive holes
- Double_t holeSepX1 = fgkmm * 15.42;//separation between centers
- // of 5th and 6th hole
- Double_t holeSepX2 = fgkmm * 22.00;//separation between centers
- // of 10th and 11th hole
- if (!kaptonLayer) {
- holeSepX0 -= fgkmm * 0.2;
- holeLength += fgkmm * 0.4;
- holeWidth += fgkmm * 0.4;
- }
-
- // X position of hole center (will change for each hole)
- Double_t holeX = -0.5*length;
- // Y position of center of all holes (= 4.4 mm from upper border)
- Double_t holeY = 0.5*(width - holeWidth) - widthMin;
- //if (!kaptonLayer) holeY += 0.02;
-
- // create a shape for the holes (common)
- char holeName[200];
- sprintf(holeName, "%sHOLE", type);
- TGeoBBox *shHole = 0;
- shHole = new TGeoBBox(holeName,0.5*holeLength,0.5*holeWidth,thickness);
-
- // insert the holes in the XTRU shape:
- // starting from the first value of X, they are simply shifted
- // along this axis
- char trName[200];
- TGeoTranslation *transHole[11];
- TString strComposite(shName);
- strComposite.Append("-(");
- for (Int_t i = 0; i < 11; i++) {
- // set the position of the hole, depending on index
- if (i == 0) {
- holeX += holeSepX0;
- }
- else if (i < 4) {
- holeX += holeSepXC;
- }
- else if (i == 4) {
- holeX += holeSepX1;
- }
- else if (i < 10) {
- holeX += holeSepXC;
- }
- else {
- holeX += holeSepX2;
- }
- sprintf(trName, "%sTR%d", type, i);
- transHole[i] = new TGeoTranslation(trName, holeX, holeY, 0.0);
- transHole[i]->RegisterYourself();
- strComposite.Append(holeName);
- strComposite.Append(":");
- strComposite.Append(trName);
- if (i < 10) strComposite.Append("+");
- //MM cout << holeX << endl;
- }
- strComposite.Append(")");
- //MM cout << strComposite.Data() << endl;
-
- // create composite shape (with holes)
- TGeoCompositeShape *shGround = new TGeoCompositeShape(
- Form("SH_%sGFOIL", type), strComposite.Data());
+ Double_t x[8], y[8];
- // create the volume
- TGeoVolume *vol = new TGeoVolume(Form("%sGFOIL",type),shGround,
- material);
- return vol;
+ x[0] = 0.0;
+ x[1] = x[0] + fullLength - flatLength - inclLongLength*TMath::Cos(angle1);
+ x[2] = x[0] + fullLength - flatLength;
+ x[3] = x[0] + fullLength;
+ x[4] = x[3];
+ x[5] = x[4] - flatLength + thickness * TMath::Cos(angle2);
+ x[6] = x[1];
+ x[7] = x[0];
+
+ y[0] = 0.0;
+ y[1] = y[0] + inclShortLength * TMath::Cos(angle3);
+ y[2] = y[1] - inclLongLength * TMath::Sin(angle1);
+ y[3] = y[2];
+ y[4] = y[3] + thickness;
+ y[5] = y[4];
+ y[6] = y[1] + thickness;
+ y[7] = y[0] + thickness;
+
+ sizes.Set(7);
+ sizes[0] = totalLength;
+ sizes[1] = fullHeight;
+ sizes[2] = y[2];
+ sizes[3] = y[6];
+ sizes[4] = x[0];
+ sizes[5] = x[3];
+ sizes[6] = x[2];
+
+ TGeoXtru *shClip = new TGeoXtru(2);
+ shClip->SetName("SHCLIP");
+ shClip->DefinePolygon(8, x, y);
+ shClip->DefineSection(0, -0.5*totalLength, 0., 0., 1.0);
+ shClip->DefineSection(1, 0.5*totalLength, 0., 0., 1.0);
+
+ TGeoBBox *shHole = new TGeoBBox("SH_CLIPHOLE", 0.5*holeSize, 0.5*holeSize, 0.5*holeSize);
+ TGeoTranslation *tr1 = new TGeoTranslation("TR_CLIPHOLE1", x[2], 0.0, fgkmm*14.);
+ TGeoTranslation *tr2 = new TGeoTranslation("TR_CLIPHOLE2", x[2], 0.0, 0.0);
+ TGeoTranslation *tr3 = new TGeoTranslation("TR_CLIPHOLE3", x[2], 0.0, -fgkmm*14.);
+ tr1->RegisterYourself();
+ tr2->RegisterYourself();
+ tr3->RegisterYourself();
+
+ TString strExpr("SHCLIP-(");
+ strExpr.Append(Form("%s:%s+", shHole->GetName(), tr1->GetName()));
+ strExpr.Append(Form("%s:%s+", shHole->GetName(), tr2->GetName()));
+ strExpr.Append(Form("%s:%s)", shHole->GetName(), tr3->GetName()));
+ TGeoCompositeShape *shClipHole = new TGeoCompositeShape("SHCLIPHOLES", strExpr.Data());
+
+ TGeoMedium *mat = GetMedium("ITSspdCarbonFiber", mgr);
+ TGeoVolume *vClip = new TGeoVolume("clip", shClipHole, mat);
+ vClip->SetLineColor(kGray + 2);
+ return vClip;
}
-*/
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateGroundingFoilSingle(
- Bool_t kaptonLayer, Double_t &length, Double_t &width,
- Double_t &thickness, TGeoManager *mgr){
- // Creates the grounding foil layer made in Kapton.
- // Both layers of the grounding foil have the same shape, but with small
- // differences in the size of some parts (holes, overall size).
- // The Kapton layer is a little bit wider and has smaller holes.
+//
+//__________________________________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateGroundingFoilSingle
+(Int_t type, TArrayD &sizes, TGeoManager *mgr) const
+{
+ // Returns a TGeoVolume representing a single grounding foil layer.
+ // This shape is used to create the two real foils of the GF (one in
+ // kapton, and one in aluminum), and also to implement the glue
+ // layers which link the GF to the carbon fiber support, and to the
+ // ladders.
+ // ---
+ // The glue and kapton layers have exactly the same size, while
+ // the aluminum foil has some small differences in its overall size
+ // and in the dimensions of its holes. The first argument passed to
+ // the function ("type") is used to choose between all these
+ // possibilities:
+ // - type = 0 --> kapton layer
+ // - type = 1 --> aluminum layer
+ // - type = 2 --> glue layer between support and GF
+ // - type = 3 --> glue layer between GF and ladders
// ---
// The complete object is created as the sum of the following parts:
// 1) the part which is connected to the chips, which is a
- // simple BOX with some box-shaped holes at regular intervals
+ // simple box with some box-shaped holes at regular intervals
// 2) a trapezoidal connection where the Y size changes
// 3) another box with a unique hole of the same shape and size as above
// 4) another trapezoidal connection where the Y size changes
// 5) a final part which is built as a sequence of 4 BOX volumes
// where the first and the third are equal and the others have
- // same size in Y.
+ // same size in Y.
// ---
- // Whenever possible, the size of the parts is parameterized with
- // variable names, even if their value is fixed according
- // to the design parameters given by engineers' drawings.
+ // The sizes of all parts are parameterized with variable names,
+ // even if their value is fixed according to engineers' drawings.
// ---
- // Returns: a TGeoVolume object which contanis all parts of this layer
- //
-
- // instantiate the media:
+ // The returns value is a TGeoVolume object which contains all parts
+ // of this layer. The 'sizes' argument passed by reference will
+ // contain the three dimensions of the container and some other
+ // values which upper level methods (stave assemblier) must know:
+ // - sizes[0] = full thickness
+ // - sizes[1] = full length
+ // - sizes[2] = full width
+ // - sizes[3] = hole length
+ // - sizes[4] = hole width
+ // - sizes[5] = position of first hole center
+ // - sizes[6] = standard separation between holes
+ // - sizes[7] = separation between 5th and 6th hole
+ // - sizes[8] = separation between 10th and 11th hole
+ // - sizes[9] = separation between the upper hole border and the
+ // foil border
+ // ** MEDIA **
// - vacuum for the container volume
- // - kapton for the pysical volumes
- TGeoMedium *vacuum = mgr->GetMedium("VACUUM");
- TGeoMedium *material = mgr->GetMedium("KAPTON");
-
- // === Define size of all elements ===
+ // - kapton/aluminum/glue for the pysical volume
+ TGeoMedium *mat = GetMedium("SPD KAPTON(POLYCH2)$", mgr);
+ // ** SIZES **
Double_t sizeZ = fgkmm * 0.05;
-
Double_t part1X = fgkmm * 140.71;
Double_t part2X = fgkmm * 2.48;
Double_t part3X = fgkmm * 26.78;
Double_t part6X = fgkmm * 24.40;
Double_t part7X = fgkmm * 10.00;
Double_t part8X = fgkmm * 24.81;
-
Double_t sizeYMax = fgkmm * 15.95;
Double_t sizeYMed1 = fgkmm * 15.00;
Double_t sizeYMed2 = fgkmm * 11.00;
Double_t sizeYMin = fgkmm * 4.40;
-
Double_t holeX = fgkmm * 10.00;
Double_t holeY = fgkmm * 7.50;
+ Double_t holeFirstX = fgkmm * 7.05; // position of center of first hole
Double_t holeSepX = fgkmm * 14.00; // separation between the
- // centers of two consecutive
- // holes
- Double_t holeSepX1 = fgkmm * 1.42; // to be added after 4th hole
- // in volume 1
- Double_t holeFirstX = fgkmm * 7.05; // position of center of first
- // hole
+ // centers of two consecutive holes
+ Double_t holeSepX1 = fgkmm * 1.42; // to be added after 4th hole in
+ // volume 1
Double_t holeSepY = fgkmm * 4.40; // dist between hole's and
- // volume's upper border
- Double_t holeAloneX = fgkmm * 13.28; // position of hole center
- // in box "part 3"
-
- // correct data in case we are on Aluminum foil
- if (!kaptonLayer) {
- material = mgr->GetMedium("AL");
- sizeZ = fgkmm * 0.02;
+ // volume's upper border
+ Double_t holeAloneX = fgkmm * 13.28; // position of hole center in
+ // box "part 3"
+ // correct sizes/material in case we are on Aluminum foil
+ if (type == 1) {
+ mat = GetMedium("AL$", mgr);
+ sizeZ = fgkmm * 0.025;
part1X -= fgkmm * 0.2;
part5X -= fgkmm * 0.2;
part6X += fgkmm * 0.4;
part7X -= fgkmm * 0.4;
-
sizeYMax -= fgkmm * 0.4;
sizeYMed1 -= fgkmm * 0.4;
sizeYMed2 -= fgkmm * 0.4;
sizeYMin -= fgkmm * 0.4;
-
holeX += fgkmm * 0.4;
holeY += fgkmm * 0.4;
holeFirstX -= fgkmm * 0.2;
holeSepY -= fgkmm * 0.4;
- }
-
- // define names for the object
- char type[4];
- if (kaptonLayer) strcpy(type, "KAP"); else strcpy(type, "ALU");
-
+ } // end if type==1
+
+ // correct sizes/material in case we are in a glue layer
+ if (type == 2) {
+ mat = GetMedium("EPOXY$", mgr); //??? GLUE_GF_SUPPORT
+ sizeZ = fgkmm * 0.1175;
+ } // end if type ==2
+ if (type == 3) {
+ mat = GetMedium("EPOXY$", mgr); //??? GLUE_GF_SUPPORT
+ sizeZ = fgkmm * 0.1175 - fAlignmentGap;
+ if (sizeZ <= 0.0) {
+ AliFatal("Too large gap thickness.");
+ return 0;
+ } // end if sizeZ<=0
+ }// end if type==3
+ // initialize the argument TArrayD
+ if (sizes.GetSize() != 10) sizes.Set(10);
+ Double_t &thickness = sizes[0];
+ Double_t &length = sizes[1];
+ Double_t &width = sizes[2];
// compute full length and width
- length = part1X + part2X + part3X + part4X + part5X + part6X +
- part7X + part8X;
+ length = part1X+part2X+part3X+part4X+part5X+part6X+part7X+part8X;
width = sizeYMax;
thickness = sizeZ;
-
- // grounding foil world, bounded exactly around the limits
- // of the structure
- TGeoVolume *container = mgr->MakeBox(Form("GFOIL_%s", type),
- vacuum, 0.5*length, 0.5*sizeYMax, 0.5*sizeZ);
-
+ sizes[3] = holeX;
+ sizes[4] = holeY;
+ sizes[5] = holeFirstX;
+ sizes[6] = holeSepX;
+ sizes[7] = holeSepX + holeSepX1;
+ sizes[8] = fgkmm * 22.0; // the last separation is not used in the
+ // rest, and is implemented from scratch
+ sizes[9] = holeSepY;
+ // ** OBJECT NAMES **
+ // define names for the object
+ char stype[20];
+ if (type == 0) strcpy(stype, "KAP");
+ else if (type == 1) strcpy(stype, "ALU");
+ else if (type == 2) strcpy(stype, "GLUE1");
+ else if (type == 3) strcpy(stype, "GLUE2");
+ else {
+ AliFatal(Form("Type %d not allowed for grounding foil", type));
+ } // end if else
+ // ** VOLUMES **
+ // grounding foil world, bounded exactly around the limits of the structure
+ // TGeoVolume *container = mgr->MakeBox(Form("GFOIL_%s", stype),
+ // air, 0.5*length, 0.5*sizeYMax, 0.5*sizeZ);
+ TGeoVolumeAssembly *container = new TGeoVolumeAssembly(Form("GFOIL_%s",
+ stype));
// === PART 1: box with holes ===
-
TGeoBBox *shBox1 = 0, *shHole = 0;
- shBox1 = new TGeoBBox(Form("GF%s_BOX1", type), 0.5*part1X,
- 0.5*sizeYMax, 0.5*sizeZ);
- shHole = new TGeoBBox(Form("GF%s_HOLE", type), 0.5*holeX, 0.5*holeY,
- 0.5*sizeZ + 0.01);
-
+ shBox1 = new TGeoBBox(Form("GF%s_BOX1", stype), 0.5*part1X, 0.5*sizeYMax,
+ 0.5*sizeZ);
+ shHole = new TGeoBBox(Form("GF%s_HOLE", stype), 0.5*holeX, 0.5*holeY,
+ 0.5*sizeZ + 0.01);
// define the position of all holes and compose the expression
// to define the composite shape (box - holes)
Double_t firstX = -0.5*part1X + holeFirstX;
for (Int_t i = 0; i < 10; i++) {
transX = firstX + (Double_t)i * holeSepX;
if (i > 4) transX += holeSepX1;
- transHole[i] = new TGeoTranslation(Form("TGF%s_HOLE%d",type,i),
- transX, transY, 0.0);
+ transHole[i] = new TGeoTranslation(Form("TGF%s_HOLE%d", stype, i),
+ transX, transY, 0.0);
transHole[i]->RegisterYourself();
- strComposite.Append(Form("%s:%s", shHole->GetName(),
- transHole[i]->GetName()));
- if (i < 9) strComposite.Append("+");
- else strComposite.Append(")");
+ strComposite.Append(Form("%s:%s", shHole->GetName(),
+ transHole[i]->GetName()));
+ if (i < 9) strComposite.Append("+"); else strComposite.Append(")");
} // end for i
// create composite shape
TGeoCompositeShape *shPart1 = new TGeoCompositeShape(
- Form("GF%s_PART1_SHAPE", type), strComposite.Data());
+ Form("GF%s_PART1_SHAPE", stype), strComposite.Data());
// create the volume
- TGeoVolume *volPart1 = new TGeoVolume(Form("GF%s_PART1", type),
- shPart1, material);
-
+ TGeoVolume *volPart1 = new TGeoVolume(Form("GF%s_PART1", stype),
+ shPart1, mat);
// === PART 2: first trapezoidal connection
-
TGeoArb8 *shTrap1 = new TGeoArb8(0.5*sizeZ);
shTrap1->SetVertex(0, -0.5*part2X, 0.5*sizeYMax);
shTrap1->SetVertex(1, 0.5*part2X, 0.5*sizeYMax);
shTrap1->SetVertex(5, 0.5*part2X, 0.5*sizeYMax);
shTrap1->SetVertex(6, 0.5*part2X, 0.5*sizeYMax - sizeYMed1);
shTrap1->SetVertex(7, -0.5*part2X, -0.5*sizeYMax);
- TGeoVolume *volPart2 = new TGeoVolume(Form("GF%s_PART2", type),
- shTrap1, material);
-
+ TGeoVolume *volPart2 = new TGeoVolume(Form("GF%s_PART2", stype),
+ shTrap1, mat);
// === PART 3: other box with one hole
-
TGeoBBox *shBox2 = 0;
- shBox2 = new TGeoBBox(Form("GF%s_BOX2", type), 0.5*part3X,
- 0.5*sizeYMed1, 0.5*sizeZ);
-
+ shBox2 = new TGeoBBox(Form("GF%s_BOX2", stype), 0.5*part3X,
+ 0.5*sizeYMed1, 0.5*sizeZ);
// define the position of the hole
transX = holeAloneX - 0.5*part3X;
+ transY -= 0.5*(sizeYMax - sizeYMed1);
TGeoTranslation *transHoleAlone = new TGeoTranslation(
- Form("TGF%s_HOLE_ALONE", type), transX, transY, 0.0);
+ Form("TGF%s_HOLE_ALONE", stype), transX, transY, 0.0);
transHoleAlone->RegisterYourself();
// create composite shape
TGeoCompositeShape *shPart3 = new TGeoCompositeShape(
- Form("GF%sPART3_SHAPE", type),
- Form("%s - %s:%s", shBox2->GetName(),
- shHole->GetName(), transHoleAlone->GetName()));
+ Form("GF%sPART3_SHAPE", stype),
+ Form("%s - %s:%s", shBox2->GetName(),
+ shHole->GetName(), transHoleAlone->GetName()));
// create the volume
- TGeoVolume *volPart3 = new TGeoVolume(Form("GF%s_PART3", type),
- shPart3, material);
-
+ TGeoVolume *volPart3 = new TGeoVolume(Form("GF%s_PART3", stype),
+ shPart3, mat);
// === PART 4: second trapezoidal connection
-
TGeoArb8 *shTrap2 = new TGeoArb8(0.5*sizeZ);
shTrap2->SetVertex(0, -0.5*part4X, 0.5*sizeYMed1);
shTrap2->SetVertex(1, 0.5*part4X, 0.5*sizeYMed1);
shTrap2->SetVertex(5, 0.5*part4X, 0.5*sizeYMed1);
shTrap2->SetVertex(6, 0.5*part4X, 0.5*sizeYMed1 - sizeYMed2);
shTrap2->SetVertex(7, -0.5*part4X, -0.5*sizeYMed1);
- TGeoVolume *volPart4 = new TGeoVolume(Form("GF%s_PART4", type),
- shTrap2, material);
-
+ TGeoVolume *volPart4 = new TGeoVolume(Form("GF%s_PART4", stype),
+ shTrap2, mat);
// === PART 5 --> 8: sequence of boxes ===
-
- TGeoVolume *volPart5 = mgr->MakeBox(Form("GF%s_BOX3", type),
- material, 0.5*part5X, 0.5*sizeYMed2, 0.5*sizeZ);
- TGeoVolume *volPart6 = mgr->MakeBox(Form("GF%s_BOX4", type),
- material, 0.5*part6X, 0.5*sizeYMin , 0.5*sizeZ);
- TGeoVolume *volPart7 = mgr->MakeBox(Form("GF%s_BOX5", type),
- material, 0.5*part7X, 0.5*sizeYMed2, 0.5*sizeZ);
- TGeoVolume *volPart8 = mgr->MakeBox(Form("GF%s_BOX6", type),
- material, 0.5*part8X, 0.5*sizeYMin , 0.5*sizeZ);
-
+ TGeoVolume *volPart5 = mgr->MakeBox(Form("GF%s_BOX3", stype), mat,
+ 0.5*part5X, 0.5*sizeYMed2, 0.5*sizeZ);
+ TGeoVolume *volPart6 = mgr->MakeBox(Form("GF%s_BOX4", stype), mat,
+ 0.5*part6X, 0.5*sizeYMin , 0.5*sizeZ);
+ TGeoVolume *volPart7 = mgr->MakeBox(Form("GF%s_BOX5", stype), mat,
+ 0.5*part7X, 0.5*sizeYMed2, 0.5*sizeZ);
+ TGeoVolume *volPart8 = mgr->MakeBox(Form("GF%s_BOX6", stype), mat,
+ 0.5*part8X, 0.5*sizeYMin , 0.5*sizeZ);
// === SET COLOR ===
- if (kaptonLayer) {
- volPart1->SetLineColor(kRed + 3);
- volPart2->SetLineColor(kRed + 3);
- volPart3->SetLineColor(kRed + 3);
- volPart4->SetLineColor(kRed + 3);
- volPart5->SetLineColor(kRed + 3);
- volPart6->SetLineColor(kRed + 3);
- volPart7->SetLineColor(kRed + 3);
- volPart8->SetLineColor(kRed + 3);
- }else{
- volPart1->SetLineColor(kGreen);
- volPart2->SetLineColor(kGreen);
- volPart3->SetLineColor(kGreen);
- volPart4->SetLineColor(kGreen);
- volPart5->SetLineColor(kGreen);
- volPart6->SetLineColor(kGreen);
- volPart7->SetLineColor(kGreen);
- volPart8->SetLineColor(kGreen);
- } // end if (kaptonLayer)
-
- // === TRANSLATION OF ALL PARTS ===
-
+ Color_t color = kRed + 3;
+ if (type == 1) color = kGreen;
+ if (type == 2 || type == 3) color = kYellow;
+ volPart1->SetLineColor(color);
+ volPart2->SetLineColor(color);
+ volPart3->SetLineColor(color);
+ volPart4->SetLineColor(color);
+ volPart5->SetLineColor(color);
+ volPart6->SetLineColor(color);
+ volPart7->SetLineColor(color);
+ volPart8->SetLineColor(color);
+ // ** MOVEMENTS **
transX = 0.5*(part1X - length);
TGeoTranslation *transPart1 = new TGeoTranslation(transX, 0.0, 0.0);
transX += 0.5*(part1X + part2X);
transX += 0.5*(part7X + part8X);
transY = 0.5*(sizeYMax - sizeYMin);
TGeoTranslation *transPart8 = new TGeoTranslation(transX, transY, 0.0);
-
// add the partial volumes to the container
container->AddNode(volPart1, 1, transPart1);
container->AddNode(volPart2, 2, transPart2);
container->AddNode(volPart6, 6, transPart6);
container->AddNode(volPart7, 7, transPart7);
container->AddNode(volPart8, 8, transPart8);
-
return container;
}
-
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateGroundingFoil(Double_t &thickness,
- TGeoManager *mgr){
- // Joins two Kapton and two Aluminum layers of the grounding foil
- // in order to create the complete grounding foil for a whole stave.
- // into a unique container volume, which is returned as output.
- // The use of the TGeoXtru shape requires that in the separate
- // foils, the Z axis lies perpendicularly to the polygonal basis
- // of this shape; this caused the components to have their Z
- // axis corresponding to the X axis of the ALICE reference frame
- // and vieceversa; to correct this, a rotation is necessary
- // around their middle axis, to exchange X and Z axes and displace
- // the object correctly in the ALICE frame.
+//
+//__________________________________________________________________________________________
+TGeoVolume* AliITSv11GeometrySPD::CreateGroundingFoil
+(Bool_t isRight, TArrayD &sizes, TGeoManager *mgr) const
+{
+ // Create a volume containing all parts of the grounding foil a
+ // half-stave. The use of the TGeoXtru shape causes that in each
+ // single component volume the Z axis lies perpendicularly to the
+ // polygonal basis of this shape. Since we want that the Z axis
+ // of this volume must coincide with the one of the ALICE global
+ // reference frame, this requires some rotations of each component,
+ // besides the necessary translations to place it correctly with
+ // respect to the whole stave volume.
// ---
// Arguments:
- // - the sizes of the container box (passed by reference and
- // filled here)
- // - the TGeoManager
+ // 1: a boolean value to know if it is the grounding foir for
+ // the right or left side
+ // 2: a TArrayD which will contain the dimension of the container box:
+ // - size[0] = length along Z (the beam line direction)
+ // - size[1] = the 'width' of the stave, which defines, together
+ // with Z, the plane of the carbon fiber support
+ // - size[2] = 'thickness' (= the direction along which all
+ // stave components are superimposed)
+ // 3: the TGeoManager
// ---
- // Returns:
- // - the container TGeoBBox (return value)
- // - the size of the container (reference variables)
- //
+ // The return value is a TGeoBBox volume containing all grounding
+ // foil components.
+ // to avoid strange behaviour of the geometry manager,
+ // create a suffix to be used in the names of all shapes
+ char suf[5];
+ if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
+ // this volume will be created in order to ease its placement in
+ // the half-stave; then, it is added here the small distance of
+ // the "central" edge of each volume from the Z=0 plane in the stave
+ // reference (which coincides with ALICE one)
+ Double_t dist = fgkmm * 0.71;
+ // create the component volumes and register their sizes in the
+ // passed arrays for readability reasons, some reference variables
+ // explicit the meaning of the array slots
+ TArrayD kpSize(9), alSize(9), g1Size(9), g2Size(9);
+ TGeoVolume *kpVol = CreateGroundingFoilSingle(0, kpSize, mgr);
+ TGeoVolume *alVol = CreateGroundingFoilSingle(1, alSize, mgr);
+ TGeoVolume *g1Vol = CreateGroundingFoilSingle(2, g1Size, mgr);
+ TGeoVolume *g2Vol = CreateGroundingFoilSingle(3, g2Size, mgr);
+ Double_t &kpLength = kpSize[1],&kpThickness=kpSize[0];//,&kpWidth=kpSize[2];
+ Double_t &alLength = alSize[1],&alThickness=alSize[0];//,&alWidth=alSize[2];
+ Double_t &g1Thickness = g1Size[0], &g2Thickness = g2Size[0];
- // sizes of the added volumes, which are filled by passing them
- // to the volume creation methods
- Double_t kpLength, kpWidth, kpThick;
- Double_t alLength, alWidth, alThick;
- // separation between left and right volumes
- Double_t separation = fgkmm * 1.42;
-
- // create the two component volumes (each one will be replicated
- // twice) this gives also the size of their virtual container
- // boxes (just a reference, not a volume)
- TGeoVolume *kVol = CreateGroundingFoilSingle(kTRUE, kpLength,
- kpWidth, kpThick, mgr);
- TGeoVolume *aVol = CreateGroundingFoilSingle(kFALSE, alLength,
- alWidth, alThick, mgr);
- kVol->SetLineColor(kRed);
- aVol->SetLineColor(kGray);
-
- // kapton leads the total size of the foil (including spagcing
- // of 1.42 mm between them in the center)
- Double_t length, width;
- length = 2.0 * kpLength + separation;
- width = kpWidth;
- thickness = kpThick + alThick;
-
+ // create references for the final size object
+ if (sizes.GetSize() != 3) sizes.Set(3);
+ Double_t &fullThickness = sizes[0];
+ Double_t &fullLength = sizes[1];
+ Double_t &fullWidth = sizes[2];
+ // kapton leads the larger dimensions of the foil
+ // (including the cited small distance from Z=0 stave reference plane)
+ // the thickness is the sum of the ones of all components
+ fullLength = kpSize[1] + dist;
+ fullWidth = kpSize[2];
+ fullThickness = kpSize[0] + alSize[0] + g1Size[0] + g2Size[0];
// create the container
- TGeoMedium *vacuum = mgr->GetMedium("VACUUM");
- TGeoVolume *container = mgr->MakeBox("GFOIL", vacuum, 0.5*thickness,
- 0.5*width, 0.5*length);
-
- // create the common correction rotations
- TGeoRotation *rotCorr1 = new TGeoRotation(*gGeoIdentity);
- TGeoRotation *rotCorr2 = new TGeoRotation(*gGeoIdentity);
- rotCorr1->RotateY(-90.0);
- rotCorr2->RotateY( 90.0);
-
- // compute the translations to place the objects at the edges of
- // the volume the kapton foils are also shifted down, and the
- // aluminum foils are shifted up with respect to the thickness
- // direction
- TGeoTranslation *kTrans1 = new TGeoTranslation(0.5*(-thickness+kpThick),
- 0.0,
- 0.5*(length-kpLength));
- TGeoTranslation *kTrans2 = new TGeoTranslation(0.5*(-thickness+kpThick),
- 0.0,
- 0.5*(-length+kpLength));
- TGeoTranslation *aTrans1 = new TGeoTranslation(0.5*(thickness-alThick),
- 0.0,
- 0.5*(length-alLength)-0.02);
- TGeoTranslation *aTrans2 = new TGeoTranslation(0.5*(thickness-alThick),
- 0.0,
- 0.5*(-length+alLength)+0.02);
-
- // combine translations and rotations
- TGeoCombiTrans *kCombi1 = new TGeoCombiTrans(*kTrans1, *rotCorr1);
- TGeoCombiTrans *kCombi2 = new TGeoCombiTrans(*kTrans2, *rotCorr2);
- TGeoCombiTrans *aCombi1 = new TGeoCombiTrans(*aTrans1, *rotCorr1);
- TGeoCombiTrans *aCombi2 = new TGeoCombiTrans(*aTrans2, *rotCorr2);
+ TGeoMedium *air = GetMedium("AIR$", mgr);
+ TGeoVolume *container = mgr->MakeBox(Form("GFOIL_%s", suf), air,
+ 0.5*fullThickness, 0.5*fullWidth, 0.5*fullLength);
+ // create the common correction rotation (which depends of what side
+ // we are building)
+ TGeoRotation *rotCorr = new TGeoRotation(*gGeoIdentity);
+ if (isRight) rotCorr->RotateY(90.0);
+ else rotCorr->RotateY(-90.0);
+ // compute the translations, which are in the length and thickness
+ // directions
+ Double_t x, y, z, shift = 0.0;
+ if (isRight) shift = dist;
+ // glue (bottom)
+ x = -0.5*(fullThickness - g1Thickness);
+ z = 0.5*(fullLength - kpLength) - shift;
+ TGeoCombiTrans *g1Trans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
+ // kapton
+ x += 0.5*(g1Thickness + kpThickness);
+ TGeoCombiTrans *kpTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
+ // aluminum
+ x += 0.5*(kpThickness + alThickness);
+ z = 0.5*(fullLength - alLength) - shift - 0.5*(kpLength - alLength);
+ TGeoCombiTrans *alTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
+ // glue (top)
+ x += 0.5*(alThickness + g2Thickness);
+ z = 0.5*(fullLength - kpLength) - shift;
+ TGeoCombiTrans *g2Trans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
// add to container
- container->AddNode(kVol, 0, kCombi1);
- container->AddNode(kVol, 1, kCombi2);
- container->AddNode(aVol, 0, aCombi1);
- container->AddNode(aVol, 1, aCombi2);
-
+ container->AddNode(kpVol, 0, kpTrans);
+ container->AddNode(alVol, 0, alTrans);
+ container->AddNode(g1Vol, 0, g1Trans);
+ container->AddNode(g2Vol, 0, g2Trans);
+ // to add the grease we remember the sizes of the holes, stored as
+ // additional parameters in the kapton layer size:
+ // - sizes[3] = hole length
+ // - sizes[4] = hole width
+ // - sizes[5] = position of first hole center
+ // - sizes[6] = standard separation between holes
+ // - sizes[7] = separation between 5th and 6th hole
+ // - sizes[8] = separation between 10th and 11th hole
+ // - sizes[9] = separation between the upper hole border and
+ // the foil border
+ Double_t holeLength = kpSize[3];
+ Double_t holeWidth = kpSize[4];
+ Double_t holeFirstZ = kpSize[5];
+ Double_t holeSepZ = kpSize[6];
+ Double_t holeSep5th6th = kpSize[7];
+ Double_t holeSep10th11th = kpSize[8];
+ Double_t holeSepY = kpSize[9];
+ // volume (common)
+ TGeoMedium *grease = GetMedium("SPD KAPTON(POLYCH2)$", mgr); // ??? GREASE
+ TGeoVolume *hVol = mgr->MakeBox("GREASE", grease, 0.5*fullThickness,
+ 0.5*holeWidth, 0.5*holeLength);
+ hVol->SetLineColor(kBlue);
+ // displacement of volumes in the container
+ Int_t idx = 0;
+ x = 0.0;
+ y = 0.5*(fullWidth - holeWidth) - holeSepY;
+ if (isRight) z = holeFirstZ - 0.5*fullLength + dist;
+ else z = 0.5*fullLength - holeFirstZ - dist;
+ for (Int_t i = 0; i < 11; i++) {
+ TGeoTranslation *t = 0;
+ t = new TGeoTranslation(x, y, -z);
+ container->AddNode(hVol, idx++, t);
+ if (i < 4) shift = holeSepZ;
+ else if (i == 4) shift = holeSep5th6th;
+ else if (i < 9) shift = holeSepZ;
+ else shift = holeSep10th11th;
+ if (isRight) z += shift;
+ else z -= shift;
+ }// end for i
return container;
}
-
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateMCMBase(TGeoManager *geom) const{
- // Creates the MCM basis volume.
- // It is a little bit more complicated because this is a plain base
- // with a poly shape similar to the one of grounding foil but
- // there are also some chips glued to its base and covered with
- // a cave cap.
- // ---
- // The complete MCM object is created as the sum of the following parts:
- // 1) a planar basis shaped according to the MCM typical shape
- // 2) some boxes which represent the chips and devices mounted on
- // this base
- // 3) a cave cap which covers the portion of MCM containing these chips
- // ---
- // Due to the different widths of MCM, it is implemented in a
- // more complicated way:
- // - cap and chips will define a sub-volume of this structure,
- // which can be bounded by a complete box
- // - base of MCM will be a separate volume
- // - these two objects will need to be glued together into an
- // upper-level volume
- // ---
- // This metod creates only the thin base (point 1 in the list)
- //
-
- // medium
- TGeoMedium *medBase = geom->GetMedium("MCM BASE");
-
- // parameterize the interesting sizes of MCM
- // it is divided into 3 sectors which have different size in
- // X and Y and are connected by trapezoidal-based shapes,
- // where the oblique angle makes a 45 degrees angle with the
- // vertical, so that the X size and Y size of these "intermezzo"'s
- // is the same
- // +--------------------------------+
- // | sect 2 |
- // | sect 1 --------------------+
- // +-----------/
- Double_t sizeZ = fgkmm * 0.35;
- Double_t sizeXtot = fgkmm * 105.6;
- Double_t sizeXsector[3] = {fgkmm * 28.4, fgkmm * 41.4, fgkmm * 28.8};
- Double_t sizeYsector[3] = {fgkmm * 15.0, fgkmm * 11.0, fgkmm * 8.0};
- Double_t sizeSep01 = fgkmm * 4.0, sizeSep12 = fgkmm * 3.0;
- Double_t sizeHole = fgkmm * 1.0;
- Double_t posHoleX = fgkmm * -0.5*sizeXtot + 26.7 + 0.5*sizeHole;
- Double_t posHoleY = fgkmm * -0.5*sizeYsector[0] + 0.5*sizeHole;
-
- // define the shape of base volume as an XTRU with two identical faces
- // distantiated by the width of the itself
- Double_t x[8], y[8];
- x[0] = -0.5*sizeXtot;
- y[0] = 0.5*sizeYsector[0];
- x[1] = -x[0];
- y[1] = y[0];
- x[2] = x[1];
- y[2] = y[1] - sizeYsector[2];
- x[3] = x[2] - sizeXsector[2];
- y[3] = y[2];
- x[4] = x[3] - sizeSep12;
- y[4] = y[3] - sizeSep12;
- x[5] = x[4] - sizeXsector[1];
- y[5] = y[4];
- x[6] = x[5] - sizeSep01;
- y[6] = y[5] - sizeSep01;
- x[7] = x[0];
- y[7] = -y[0];
-
- // create shape
- TGeoXtru *shPoly = new TGeoXtru(2);
- shPoly->SetName("SH_MCMBASE_POLY");
- shPoly->DefinePolygon(8, x, y);
- shPoly->DefineSection(0, -0.5*sizeZ, 0., 0., 1.0);
- shPoly->DefineSection(1, 0.5*sizeZ, 0., 0., 1.0);
-
- // create small hole
- TGeoBBox *shHole = 0;
- shHole = new TGeoBBox("SH_MCMBASE_HOLE", 0.5*sizeHole, 0.5*sizeHole,
- 0.5*sizeZ+0.01);
- TGeoTranslation *transHole = new TGeoTranslation("TR_MCMBASE_HOLE",
- posHoleX, posHoleY, 0.0);
- transHole->RegisterYourself();
-
- // create shape intersection
- TGeoCompositeShape *shBase = new TGeoCompositeShape("SH_MCMBASE",
- "SH_MCMBASE_POLY - SH_MCMBASE_HOLE:TR_MCMBASE_HOLE");
-
- // create volume
- TGeoVolume *volBase = new TGeoVolume("VOL_MCMBASE", shBase, medBase);
- volBase->SetLineColor(kRed);
-
- return volBase;
-}
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateMCMCoverBorder(TGeoManager *geom){
- // Creates the MCM basis volume.
- // It is a little bit more complicated because this is a plain base
- // with a poly shape similar to the one of grounding foil but there
- // are also some chips glued to its base and covered with a cave cap.
- // ---
- // The complete MCM object is created as the sum of the following parts:
- // 1) a planar basis shaped according to the MCM typical shape
- // 2) some boxes which represent the chips and devices mounted on
- // this base
- // 3) a cave cap which covers the portion of MCM containing these chips
+//
+//__________________________________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateMCM
+(Bool_t isRight, TArrayD &sizes, TGeoManager *mgr) const
+{
+ // Assemblies all the components of the MCM and builds it as an
+ // assembly, because its large thickness could cause inexistent
+ // overlaps if all components were put into a true TGeoBBox.
+ // This assembly contains:
+ // - a layer of glue which has the same size of the MCM itself,
+ // and it the lowest part
+ // - the thin part of the MCM
+ // - the chips on the MCM, according to the specifications from EDMS
+ // - the cover which is superimposed to the part of the MCM with the chips
// ---
- // Due to the different widths of MCM, it is implemented in a more
- // complicated way:
- // - cap and chips will define a sub-volume of this structure,
- // which can be bounded by a complete box
- // - base of MCM will be a separate volume
- // - these two objects will need to be glued together into an
- // upper-level volume
+ // Even if this is an assembly, the placement of objects is made in
+ // such a way that they are virtually contained in an imaginary box
+ // whose center is placed exactly in the middle of the occupied space
+ // in all directions. This will ease the positioning of this object
+ // in the final stave. The sizes of this virtual box are stored in
+ // the array passed by reference.
// ---
- // This metod creates the thicker cap and its contents (points 2-3
- // in the list). Since it covers only two of the three sectors of
- // the MCM base with different width
- // the computations and variables related to the largest sector
- // are removed, while
- // the other are the same as the other part of the MCM.
+ // Arguments:
+ // - a boolean flag to know if this is the left or right MCM, when
+ // looking at the stave from above (i.e. the direction from which
+ // one sees bus over ladders over grounding foil) and keeping the
+ // upper border continuous.
+ // - an array passed by reference which will contain the size of a
+ // virtual box containing all this stuff
+ // - a pointer to the used TGeoManager.
+ // to avoid strange behaviour of the geometry manager,
+ // create a suffix to be used in the names of all shapes
+ char suf[5];
+ if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
+ // ** MEDIA **
+ TGeoMedium *medBase = GetMedium("SPD KAPTON(POLYCH2)$",mgr);// ??? MCM BASE
+ TGeoMedium *medGlue = GetMedium("EPOXY$",mgr); // ??? GlueMCM
+ TGeoMedium *medChip = GetMedium("SPD SI CHIP$",mgr);
+ TGeoMedium *medCap = GetMedium("AL$",mgr);
+ // The shape of the MCM is divided into 3 sectors with different
+ // widths (Y) and lengths (X), like in this sketch:
//
-
- // media
- TGeoMedium *medCap = geom->GetMedium("MCM COVER");
-
- // parameterize the interesting sizes of MCM
- // it is divided into 3 sectors which have different size in
- // X and Y and are connected by trapezoidal-based shapes,
- // where the oblique angle makes a 45 degrees angle with the
- // vertical, so that the X size and Y size of these "intermezzo"'s
- // is the same
- // +--------------------------------+
- // | sect 2 |
- // | sect 1 --------------------+
- // +-----------/
- Double_t sizeZ = fgkmm * 0.3;
- Double_t capHeight = fgkmm * 1.7 - sizeZ;
- Double_t sizeXtot = fgkmm * 73.2;
- Double_t sizeXsector[2] = {fgkmm * 41.4, fgkmm * 28.8};
- Double_t sizeYsector[2] = {fgkmm * 11.0, fgkmm * 8.0};
- Double_t sizeSep = fgkmm * 3.0;
-
- // === PART 1: border ===
-
- // define the shape of base volume as an XTRU with two identical faces
- // distantiated by the width of the itself
- Double_t x[6], y[6];
- x[0] = -0.5*sizeXtot;
- y[0] = 0.5*sizeYsector[0];
- x[1] = -x[0];
- y[1] = y[0];
- x[2] = x[1];
- y[2] = y[1] - sizeYsector[1];
- x[3] = x[2] - sizeXsector[1];
- y[3] = y[2];
- x[4] = x[3] - sizeSep;
- y[4] = y[3] - sizeSep;
- x[5] = x[0];
- y[5] = -y[0];
-
- // create outer border shape with above coordinates
- TGeoXtru *capOut = new TGeoXtru(2);
- capOut->SetName("SH_MCMCAPOUT");
- capOut->DefinePolygon(6, x, y);
- capOut->DefineSection(0, -0.5*capHeight, 0., 0., 1.0);
- capOut->DefineSection(1, 0.5*capHeight, 0., 0., 1.0);
-
- // the inner border is built similarly but subtracting the thickness
- Double_t angle = 45.0;
- Double_t cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
- Double_t xin[6], yin[6];
- xin[0] = x[0] + sizeZ;
- yin[0] = y[0] - sizeZ;
- xin[1] = x[1] - sizeZ;
- yin[1] = yin[0];
- xin[2] = xin[1];
- yin[2] = y[2] + sizeZ;
- xin[3] = x[3] - sizeZ*cs;
- yin[3] = yin[2];
- xin[4] = xin[3] - sizeSep;
- yin[4] = y[4] + sizeZ;
- xin[5] = xin[0];
- yin[5] = yin[4];
-
- // create inner border shape
- TGeoXtru *capIn = new TGeoXtru(2);
- capIn->SetName("SH_MCMCAPIN");
- capIn->DefinePolygon(6, xin, yin);
- capIn->DefineSection(0, -0.5*capHeight-0.01, 0., 0., 1.0);
- capIn->DefineSection(1, 0.5*capHeight+0.01, 0., 0., 1.0);
-
- // compose shape
- TGeoCompositeShape *shBorder = new TGeoCompositeShape("SH_MCMCAPBORDER",
- "SH_MCMCAPOUT-SH_MCMCAPIN");
-
- // create volume
- TGeoVolume *volBorder = new TGeoVolume("VOL_MCMCAPBORDER", shBorder,
- medCap);
- volBorder->SetLineColor(kGreen);
-
- return volBorder;
-}
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateMCMCoverTop(TGeoManager *geom){
- // Creates the MCM basis volume.
- // It is a little bit more complicated because this is a plain base
- // with a poly shape similar to the one of grounding foil but
- // there are also
- // some chips glued to its base and covered with a cave cap.
- // ---
- // The complete MCM object is created as the sum of the following parts:
- // 1) a planar basis shaped according to the MCM typical shape
- // 2) some boxes which represent the chips and devices mounted on
- // this base
- // 3) a cave cap which covers the portion of MCM containing these chips
- // ---
- // Due to the different widths of MCM, it is implemented in a
- // more complicated way:
- // - cap and chips will define a sub-volume of this structure,
- // which can be bounded by a complete box
- // - base of MCM will be a separate volume
- // - these two objects will need to be glued together into an
- // upper-level volume
- // ---
- // This metod creates the thicker cap and its contents (points
- // 2-3 in the list). Since it covers only two of the three
- // sectors of the MCM base with different width
- // the computations and variables related to the largest sector
- // are removed, while the other are the same as the other part
- // of the MCM.
+ // 0 1 2
+ // +---------------------+-----------------------------------+
+ // | 4 sect 2 |
+ // | 6 sect 1 /-------------------+
+ // | sect 0 /--------------/ 3
+ // +--------------------/ 5
+ // 8 7
//
+ // the inclination of all oblique borders (6-7, 4-5) is always 45 degrees.
+ // From drawings we can parametrize the dimensions of all these sectors,
+ // then the shape of this part of the MCM is implemented as a
+ // TGeoXtru centerd in the virtual XY space. Since this shape
+ // is used twice (to define the MCM itself and the glue below it),
+ // we need to define two different shapes with different thicknesses
+ // and, since we place them in an assembly, we displace them
+ // directly in the right place with respect to the local Z axis
+ // (which is in the direction of thickness). The first step is
+ // definig the relevant sizes of this shape:
+ Int_t i, j;
+ Double_t mcmThickness = fgkmm * 0.35;
+ Double_t glueThickness = fAlignmentGap;
+ Double_t sizeXtot = fgkmm * 105.6; // total distance 0-2
+ // resp. 7-8, 5-6 and 3-4
+ Double_t sizeXsector[3] = {fgkmm * 28.4, fgkmm * 41.4, fgkmm * 28.8};
+ // resp. 0-8, 1-6 and 2-3
+ Double_t sizeYsector[3] = {fgkmm * 15.0, fgkmm * 11.0, fgkmm * 8.0};
+ Double_t sizeSep01 = fgkmm * 4.0; // x(6)-x(7)
+ Double_t sizeSep12 = fgkmm * 3.0; // x(4)-x(5)
+ // define sizes of chips (last is the thickest)
+ Double_t chipLength[5] = { 4.00, 6.15, 3.85, 5.60, 18.00 };
+ Double_t chipWidth[5] = { 3.00, 4.10, 3.85, 5.60, 5.45 };
+ Double_t chipThickness[5] = { 0.60, 0.30, 0.30, 1.00, 1.20 };
+ TString name[5];
+ name[0] = "ANALOG";
+ name[1] = "PILOT";
+ name[2] = "GOL";
+ name[3] = "RX40";
+ name[4] = "OPTICAL";
+ Color_t color[5] = { kCyan, kGreen, kYellow, kBlue, kOrange };
- // media
- TGeoMedium *medCap = geom->GetMedium("MCM COVER");
-
- // parameterize the interesting sizes of MCM
- // it is divided into 3 sectors which have different size in X
- // and Y and are connected by trapezoidal-based shapes, where
- // the oblique angle makes a 45 degrees angle with the vertical,
- // so that the X size and Y size of these "intermezzo"'s is the same
- // +--------------------------------+
- // | sect 2 |
- // | sect 1 --------------------+
- // +-----------/
- Double_t sizeZ = fgkmm * 0.3;
- Double_t sizeXtot = fgkmm * 73.2;
- Double_t sizeXsector[2] = {fgkmm * 41.4, fgkmm * 28.8};
- Double_t sizeYsector[2] = {fgkmm * 11.0, fgkmm * 8.0};
- Double_t sizeSep = fgkmm * 3.0;
-
- // === PART 1: border ===
-
- // define the shape of base volume as an XTRU with two identical faces
- // distantiated by the width of the itself
- Double_t x[6], y[6];
- x[0] = -0.5*sizeXtot;
- y[0] = 0.5*sizeYsector[0];
- x[1] = -x[0];
- y[1] = y[0];
- x[2] = x[1];
- y[2] = y[1] - sizeYsector[1];
- x[3] = x[2] - sizeXsector[1];
- y[3] = y[2];
- x[4] = x[3] - sizeSep;
- y[4] = y[3] - sizeSep;
- x[5] = x[0];
- y[5] = -y[0];
-
- // create outer border shape with above coordinates
- TGeoXtru *capOut = new TGeoXtru(2);
- capOut->SetName("SH_MCMCAPOUT");
- capOut->DefinePolygon(6, x, y);
- capOut->DefineSection(0, -0.5*sizeZ, 0., 0., 1.0);
- capOut->DefineSection(1, 0.5*sizeZ, 0., 0., 1.0);
-
- // the inner border is built similarly but subtracting the thickness
- Double_t angle = 45.0;
- Double_t cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
- Double_t xin[6], yin[6];
- xin[0] = x[0] + sizeZ;
- yin[0] = y[0] - sizeZ;
- xin[1] = x[1] - sizeZ;
- yin[1] = yin[0];
- xin[2] = xin[1];
- yin[2] = y[2] + sizeZ;
- xin[3] = x[3] - sizeZ*cs;
- yin[3] = yin[2];
- xin[4] = xin[3] - sizeSep;
- yin[4] = y[4] + sizeZ;
- xin[5] = xin[0];
- yin[5] = yin[4];
-
- // coverage of upper part (equal to external border, but full)
- TGeoXtru *shCover = new TGeoXtru(2);
- shCover->SetName("SH_MCMCAPCOVER");
- shCover->DefinePolygon(6, x, y);
- shCover->DefineSection(0, -0.5*sizeZ, 0., 0., 1.0);
- shCover->DefineSection(1, 0.5*sizeZ, 0., 0., 1.0);
+ // define the sizes of the cover
+ Double_t capThickness = fgkmm * 0.3;
+ Double_t capHeight = fgkmm * 1.7;
+ // compute the total size of the virtual container box
+ Double_t &thickness = sizes[0];
+ Double_t &length = sizes[1];
+ Double_t &width = sizes[2];
+ length = sizeXtot;
+ width = sizeYsector[0];
+ thickness = glueThickness + mcmThickness + capHeight;
+ // define all the relevant vertices of the polygon
+ // which defines the transverse shape of the MCM.
+ // These values are used to several purposes, and
+ // for each one, some points must be excluded
+ Double_t xRef[9], yRef[9];
+ xRef[0] = -0.5*sizeXtot;
+ yRef[0] = 0.5*sizeYsector[0];
+ xRef[1] = xRef[0] + sizeXsector[0] + sizeSep01;
+ yRef[1] = yRef[0];
+ xRef[2] = -xRef[0];
+ yRef[2] = yRef[0];
+ xRef[3] = xRef[2];
+ yRef[3] = yRef[2] - sizeYsector[2];
+ xRef[4] = xRef[3] - sizeXsector[2];
+ yRef[4] = yRef[3];
+ xRef[5] = xRef[4] - sizeSep12;
+ yRef[5] = yRef[4] - sizeSep12;
+ xRef[6] = xRef[5] - sizeXsector[1];
+ yRef[6] = yRef[5];
+ xRef[7] = xRef[6] - sizeSep01;
+ yRef[7] = yRef[6] - sizeSep01;
+ xRef[8] = xRef[0];
+ yRef[8] = -yRef[0];
+ // the above points are defined for the "right" MCM (if ve view the
+ // stave from above) in order to change to the "left" one, we must
+ // change the sign to all X values:
+ if (isRight) for (i = 0; i < 9; i++) xRef[i] = -xRef[i];
+ // the shape of the MCM and glue layer are done excluding point 1,
+ // which is not necessary and cause the geometry builder to get confused
+ j = 0;
+ Double_t xBase[8], yBase[8];
+ for (i = 0; i < 9; i++) {
+ if (i == 1) continue;
+ xBase[j] = xRef[i];
+ yBase[j] = yRef[i];
+ j++;
+ } // end for i
- // create volume
- TGeoVolume *volCover = new TGeoVolume("VOL_MCMCAPCOVER", shCover,
- medCap);
- volCover->SetLineColor(kBlue);
+ // the MCM cover is superimposed over the sectors 1 and 2 only
+ Double_t xCap[6], yCap[6];
+ j = 0;
+ for (i = 1; i <= 6; i++) {
+ xCap[j] = xRef[i];
+ yCap[j] = yRef[i];
+ j++;
+ } // end for i
- return volCover;
+ // define positions of chips,
+ // which must be added to the bottom-left corner of MCM
+ // and divided by 1E4;
+ Double_t chipX[5], chipY[5];
+ if (isRight) {
+ chipX[0] = 666320.;
+ chipX[1] = 508320.;
+ chipX[2] = 381320.;
+ chipX[3] = 295320.;
+ chipX[4] = 150320.;
+ chipY[0] = 23750.;
+ chipY[1] = 27750.;
+ chipY[2] = 20750.;
+ chipY[3] = 42750.;
+ chipY[4] = 39750.;
+ } else {
+ chipX[0] = 389730.;
+ chipX[1] = 548630.;
+ chipX[2] = 674930.;
+ chipX[3] = 761430.;
+ chipX[4] = 905430.;
+ chipY[0] = 96250.;
+ chipY[1] = 91950.;
+ chipY[2] = 99250.;
+ chipY[3] = 107250.;
+ chipY[4] = 109750.;
+ } // end for isRight
+ for (i = 0; i < 5; i++) {
+ chipX[i] *= 0.00001;
+ chipY[i] *= 0.00001;
+ if (isRight) {
+ chipX[i] += xRef[3];
+ chipY[i] += yRef[3];
+ } else {
+ chipX[i] += xRef[8];
+ chipY[i] += yRef[8];
+ } // end for isRight
+ chipLength[i] *= fgkmm;
+ chipWidth[i] *= fgkmm;
+ chipThickness[i] *= fgkmm;
+ } // end for i
+ // create shapes for MCM
+ Double_t z1, z2;
+ TGeoXtru *shBase = new TGeoXtru(2);
+ TGeoXtru *shGlue = new TGeoXtru(2);
+ z1 = -0.5*thickness;
+ z2 = z1 + glueThickness;
+ shGlue->DefinePolygon(8, xBase, yBase);
+ shGlue->DefineSection(0, z1, 0., 0., 1.0);
+ shGlue->DefineSection(1, z2, 0., 0., 1.0);
+ z1 = z2;
+ z2 = z1 + mcmThickness;
+ shBase->DefinePolygon(8, xBase, yBase);
+ shBase->DefineSection(0, z1, 0., 0., 1.0);
+ shBase->DefineSection(1, z2, 0., 0., 1.0);
+
+ // create volumes of MCM
+ TGeoVolume *volBase = new TGeoVolume("BASE", shBase, medBase);
+ volBase->SetLineColor(kRed);
+ TGeoVolume *volGlue = new TGeoVolume("GLUE", shGlue, medGlue);
+ volGlue->SetLineColor(kYellow + 1);
+
+ // to create the border of the MCM cover, it is required the
+ // subtraction of two shapes the outer is created using the
+ // reference points defined here
+ TGeoXtru *shCapOut = new TGeoXtru(2);
+ shCapOut->SetName(Form("SHCAPOUT%s", suf));
+ z1 = z2;
+ z2 = z1 + capHeight - capThickness;
+ shCapOut->DefinePolygon(6, xCap, yCap);
+ shCapOut->DefineSection(0, z1, 0., 0., 1.0);
+ shCapOut->DefineSection(1, z2, 0., 0., 1.0);
+ // the inner is built similarly but subtracting the thickness
+ Double_t angle, cs;
+ Double_t xin[6], yin[6];
+ if (!isRight) {
+ angle = 45.0;
+ cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
+ xin[0] = xCap[0] + capThickness;
+ yin[0] = yCap[0] - capThickness;
+ xin[1] = xCap[1] - capThickness;
+ yin[1] = yin[0];
+ xin[2] = xin[1];
+ yin[2] = yCap[2] + capThickness;
+ xin[3] = xCap[3] - capThickness*cs;
+ yin[3] = yin[2];
+ xin[4] = xin[3] - sizeSep12;
+ yin[4] = yCap[4] + capThickness;
+ xin[5] = xin[0];
+ yin[5] = yin[4];
+ } else {
+ angle = 45.0;
+ cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
+ xin[0] = xCap[0] - capThickness;
+ yin[0] = yCap[0] - capThickness;
+ xin[1] = xCap[1] + capThickness;
+ yin[1] = yin[0];
+ xin[2] = xin[1];
+ yin[2] = yCap[2] + capThickness;
+ xin[3] = xCap[3] - capThickness*cs;
+ yin[3] = yin[2];
+ xin[4] = xin[3] + sizeSep12;
+ yin[4] = yCap[4] + capThickness;
+ xin[5] = xin[0];
+ yin[5] = yin[4];
+ } // end if isRight
+ TGeoXtru *shCapIn = new TGeoXtru(2);
+ shCapIn->SetName(Form("SHCAPIN%s", suf));
+ shCapIn->DefinePolygon(6, xin, yin);
+ shCapIn->DefineSection(0, z1 - 0.01, 0., 0., 1.0);
+ shCapIn->DefineSection(1, z2 + 0.01, 0., 0., 1.0);
+ // compose shapes
+ TGeoCompositeShape *shCapBorder = new TGeoCompositeShape(
+ Form("SHBORDER%s", suf),
+ Form("%s-%s", shCapOut->GetName(),
+ shCapIn->GetName()));
+ // create volume
+ TGeoVolume *volCapBorder = new TGeoVolume("CAPBORDER",shCapBorder,medCap);
+ volCapBorder->SetLineColor(kGreen);
+ // finally, we create the top of the cover, which has the same
+ // shape of outer border and a thickness equal of the one othe
+ // cover border one
+ TGeoXtru *shCapTop = new TGeoXtru(2);
+ z1 = z2;
+ z2 = z1 + capThickness;
+ shCapTop->DefinePolygon(6, xCap, yCap);
+ shCapTop->DefineSection(0, z1, 0., 0., 1.0);
+ shCapTop->DefineSection(1, z2, 0., 0., 1.0);
+ TGeoVolume *volCapTop = new TGeoVolume("CAPTOP", shCapTop, medCap);
+ volCapTop->SetLineColor(kBlue);
+
+ // create container assembly
+ TGeoVolumeAssembly *mcmAssembly = new TGeoVolumeAssembly("MCM");
+
+ // add objects in the assembly
+
+ // glue
+ mcmAssembly->AddNode(volGlue, 0, gGeoIdentity);
+ // mcm layer
+ mcmAssembly->AddNode(volBase, 0, gGeoIdentity);
+ // chips
+ for (i = 0; i < 5; i++) {
+ TGeoVolume *box = gGeoManager->MakeBox(name[i], medChip,
+ 0.5*chipLength[i], 0.5*chipWidth[i], 0.5*chipThickness[i]);
+ TGeoTranslation *tr = new TGeoTranslation(chipX[i], chipY[i],
+ 0.5*(-thickness + chipThickness[i]) + mcmThickness +
+ glueThickness);
+ box->SetLineColor(color[i]);
+ mcmAssembly->AddNode(box, 0, tr);
+ } // end for i
+ // cap border
+ mcmAssembly->AddNode(volCapBorder, 0, gGeoIdentity);
+ // cap top
+ mcmAssembly->AddNode(volCapTop, 0, gGeoIdentity);
+ return mcmAssembly;
}
-//______________________________________________________________________
-TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateStave(Int_t layer,
- Double_t &fullThickness, TGeoManager *mgr){
- // Creates the complete stave as an assembly which contains all
- // the stuff defined in the "CreateStaveBase" method (which are
- // the thin part of the structure) and adds to this the thick
- // cover of the MCM and the Pixel bus. This is done as an
- // assembly to avoid the problem of a "ghost" overlap which occurs
- // when putting the stave on the carbon fiber sector, in the case
- // that we define it as a volume container.
+//
+//__________________________________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBus
+(Bool_t isRight, TArrayD &sizes, TGeoManager *mgr) const
+{
+ //
+ // The pixel bus is implemented as a TGeoBBox with some objects on it,
+ // which could affect the particle energy loss.
// ---
- // Arguments:
- // - the layer where the stave has to be put (hard check on this)
- // - the geometry manager
+ // In order to avoid confusion, the bus is directly displaced
+ // according to the axis orientations which are used in the final stave:
+ // X --> thickness direction
+ // Y --> width direction
+ // Z --> length direction
//
+
- // ** CRITICAL CHECK **
- // layer number can be ONLY 1 or 2
- if (layer != 1 && layer != 2)
- AliFatal("Required that layer number be 1 or 2");
-
- // sizes regarding the components
- Double_t baseWidth, baseHeight, baseThickness;
- Double_t mcmCapBorderThickness = fgkmm * 0.3;
- Double_t mcmCapThickness = fgkmm * 1.7 - mcmCapBorderThickness;
- Double_t mcmCapHeight = fgkmm * 11.0;
- Double_t mcmCapWidth = fgkmm * 73.2;
-
- // create container
- TGeoVolumeAssembly *container = new TGeoVolumeAssembly(
- Form("LAY%d_FULLSTAVE", layer));
-
- // create subvolumes
- TGeoVolume *staveBase = CreateStaveBase(layer, baseWidth, baseHeight,
- baseThickness, mgr);
- TGeoVolume *mcmCapBorder = CreateMCMCoverBorder(mgr);
- TGeoVolume *mcmCapTop = CreateMCMCoverTop(mgr);
- // bus in z > 0
- TGeoVolumeAssembly *bus0 = CreatePixelBusAndExtensions(kTRUE, mgr);
- // bus in z < 0
- TGeoVolumeAssembly *bus1 = CreatePixelBusAndExtensions(kFALSE, mgr);
-
- // the full width and height of the area which contains all
- // components corresponds to the one of the stave base built with
- // the "CreateStaveBase" method while the thickness must be
- // computed as the sum of this base + the cover
- fullThickness = baseThickness + mcmCapThickness + mcmCapBorderThickness;
-
- // 1 - MCM cover
-
- // translations (in the X direction, MCM is at the same level as ladder)
- Double_t xBase = -0.5*fullThickness + 0.5*baseThickness;
- TGeoTranslation *trBase = new TGeoTranslation(xBase, 0.0, 0.0);
- Double_t xMCMCapB = xBase + 0.5*baseThickness + 0.5*mcmCapThickness;
- Double_t xMCMCapT = xMCMCapB + 0.5*mcmCapThickness +
- 0.5*mcmCapBorderThickness;
- Double_t yMCMCap = 0.5*(baseHeight - mcmCapHeight);
- Double_t zMCMCap1 = 0.5*baseWidth - 0.5*mcmCapWidth;
- Double_t zMCMCap0 = -zMCMCap1;
- // correction rotations
- TGeoRotation *rotCorr0 = new TGeoRotation(*gGeoIdentity);
- TGeoRotation *rotCorr1 = new TGeoRotation(*gGeoIdentity);
- rotCorr0->RotateY( 90.0);
- rotCorr1->RotateY(-90.0);
- TGeoCombiTrans *trMCMCapBorder0 = new TGeoCombiTrans(xMCMCapB,
- yMCMCap, zMCMCap0, rotCorr0);
- TGeoCombiTrans *trMCMCapBorder1 = new TGeoCombiTrans(xMCMCapB,
- yMCMCap, zMCMCap1, rotCorr1);
- TGeoCombiTrans *trMCMCapTop0 = new TGeoCombiTrans(xMCMCapT,
- yMCMCap, zMCMCap0, rotCorr0);
- TGeoCombiTrans *trMCMCapTop1 = new TGeoCombiTrans(xMCMCapT,
- yMCMCap, zMCMCap1, rotCorr1);
- // add to container
- container->AddNode(staveBase, 0, trBase);
- container->AddNode(mcmCapBorder, 0, trMCMCapBorder0);
- container->AddNode(mcmCapBorder, 1, trMCMCapBorder1);
- container->AddNode(mcmCapTop, 0, trMCMCapTop0);
- container->AddNode(mcmCapTop, 1, trMCMCapTop1);
-
- // 2 - Pixel Bus
-
- // translations
- // for the moment, a correction amount of 0.04 is required to
- // place correctly the object in X and another correction of
- // 0.015 in Z
- Double_t busHeight = fgkmm * 13.8;
- Double_t xPixelBus = xBase + baseThickness + 0.04;
- Double_t yPixelBus1 = 0.5*baseHeight - 0.5*busHeight +
- 0.5*(baseHeight - busHeight);
- Double_t zPixelBus0 = -0.25*baseWidth + 0.015 - 0.03;
- //Double_t zPixelBus0 = -0.5*(0.5*baseWidth - 0.04);
- Double_t zPixelBus1 = -zPixelBus0;
- // correction rotations
- TGeoRotation *rotCorrBus1 = new TGeoRotation(*gGeoIdentity);
- rotCorrBus1->RotateX(180.0);
- //TGeoCombiTrans *trBus0 = new TGeoCombiTrans(xPixelBus, 0.0,
- // zPixelBus0, rotCorrBus);
- TGeoTranslation *trBus0 = new TGeoTranslation(xPixelBus, 0.0,
- zPixelBus0);
- //TGeoTranslation *trBus1 = new TGeoTranslation(xPixelBus, 0.0,
- // zPixelBus1);
- TGeoCombiTrans *trBus1 = new TGeoCombiTrans(xPixelBus, yPixelBus1,
- zPixelBus1, rotCorrBus1);
-
- // add to container
- container->AddNode(bus0, 0, trBus0);
- container->AddNode(bus1, 1, trBus1);
+ // ** MEDIA **
+
+ //PIXEL BUS
+ TGeoMedium *medBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
+ TGeoMedium *medPt1000 = GetMedium("CERAMICS$",mgr); // ??? PT1000
+ // Capacity
+ TGeoMedium *medCap = GetMedium("SDD X7R capacitors$",mgr);
+ // ??? Resistance
+ TGeoMedium *medRes = GetMedium("SDD X7R capacitors$",mgr);
+ // ** SIZES & POSITIONS **
+ Double_t busLength = 170.501 * fgkmm; // length of plane part
+ Double_t busWidth = 13.800 * fgkmm; // width
+ Double_t busThickness = 0.280 * fgkmm; // thickness
+ Double_t pt1000Length = fgkmm * 1.50;
+ Double_t pt1000Width = fgkmm * 3.10;
+ Double_t pt1000Thickness = fgkmm * 0.60;
+ Double_t pt1000Y, pt1000Z[10];// position of the pt1000's along the bus
+ Double_t capLength = fgkmm * 2.55;
+ Double_t capWidth = fgkmm * 1.50;
+ Double_t capThickness = fgkmm * 1.35;
+ Double_t capY[2], capZ[2];
+
+ Double_t resLength = fgkmm * 2.20;
+ Double_t resWidth = fgkmm * 0.80;
+ Double_t resThickness = fgkmm * 0.35;
+ Double_t resY[2], resZ[2];
+
+ // position of pt1000, resistors and capacitors depends on the
+ // bus if it's left or right one
+ if (!isRight) {
+ pt1000Y = 64400.;
+ pt1000Z[0] = 66160.;
+ pt1000Z[1] = 206200.;
+ pt1000Z[2] = 346200.;
+ pt1000Z[3] = 486200.;
+ pt1000Z[4] = 626200.;
+ pt1000Z[5] = 776200.;
+ pt1000Z[6] = 916200.;
+ pt1000Z[7] = 1056200.;
+ pt1000Z[8] = 1196200.;
+ pt1000Z[9] = 1336200.;
+ resZ[0] = 1397500.;
+ resY[0] = 26900.;
+ resZ[1] = 682500.;
+ resY[1] = 27800.;
+ capZ[0] = 1395700.;
+ capY[0] = 45700.;
+ capZ[1] = 692600.;
+ capY[1] = 45400.;
+ } else {
+ pt1000Y = 66100.;
+ pt1000Z[0] = 319700.;
+ pt1000Z[1] = 459700.;
+ pt1000Z[2] = 599700.;
+ pt1000Z[3] = 739700.;
+ pt1000Z[4] = 879700.;
+ pt1000Z[5] = 1029700.;
+ pt1000Z[6] = 1169700.;
+ pt1000Z[7] = 1309700.;
+ pt1000Z[8] = 1449700.;
+ pt1000Z[9] = 1589700.;
+ capY[0] = 44500.;
+ capZ[0] = 266700.;
+ capY[1] = 44300.;
+ capZ[1] = 974700.;
+ resZ[0] = 266500.;
+ resY[0] = 29200.;
+ resZ[1] = 974600.;
+ resY[1] = 29900.;
+ } // end if isRight
+ Int_t i;
+ pt1000Y *= 1E-4 * fgkmm;
+ for (i = 0; i < 10; i++) {
+ pt1000Z[i] *= 1E-4 * fgkmm;
+ if (i < 2) {
+ capZ[i] *= 1E-4 * fgkmm;
+ capY[i] *= 1E-4 * fgkmm;
+ resZ[i] *= 1E-4 * fgkmm;
+ resY[i] *= 1E-4 * fgkmm;
+ } // end if iM2
+ } // end for i
+
+ Double_t &fullLength = sizes[1];
+ Double_t &fullWidth = sizes[2];
+ Double_t &fullThickness = sizes[0];
+ fullLength = busLength;
+ fullWidth = busWidth;
+ // add the thickness of the thickest component on bus (capacity)
+ fullThickness = busThickness + capThickness;
+ // ** VOLUMES **
+ TGeoVolumeAssembly *container = new TGeoVolumeAssembly("PixelBus");
+ TGeoVolume *bus = mgr->MakeBox("Bus", medBus, 0.5*busThickness,
+ 0.5*busWidth, 0.5*busLength);
+ TGeoVolume *pt1000 = mgr->MakeBox("PT1000", medPt1000,
+ 0.5*pt1000Thickness, 0.5*pt1000Width, 0.5*pt1000Length);
+ TGeoVolume *res = mgr->MakeBox("Resistor", medRes, 0.5*resThickness,
+ 0.5*resWidth, 0.5*resLength);
+ TGeoVolume *cap = mgr->MakeBox("Capacitor", medCap, 0.5*capThickness,
+ 0.5*capWidth, 0.5*capLength);
+ bus->SetLineColor(kYellow + 2);
+ pt1000->SetLineColor(kGreen + 3);
+ res->SetLineColor(kRed + 1);
+ cap->SetLineColor(kBlue - 7);
+ // ** MOVEMENTS AND POSITIONEMENT **
+ // bus
+ TGeoTranslation *trBus = new TGeoTranslation(0.5 * (busThickness -
+ fullThickness), 0.0, 0.0);
+ container->AddNode(bus, 0, trBus);
+ Double_t zRef, yRef, x, y, z;
+ if (isRight) {
+ zRef = -0.5*fullLength;
+ yRef = -0.5*fullWidth;
+ } else {
+ zRef = -0.5*fullLength;
+ yRef = -0.5*fullWidth;
+ } // end if isRight
+ // pt1000
+ x = 0.5*(pt1000Thickness - fullThickness) + busThickness;
+ for (i = 0; i < 10; i++) {
+ y = yRef + pt1000Y;
+ z = zRef + pt1000Z[i];
+ TGeoTranslation *tr = new TGeoTranslation(x, y, z);
+ container->AddNode(pt1000, i, tr);
+ } // end for i
+ // capacitors
+ x = 0.5*(capThickness - fullThickness) + busThickness;
+ for (i = 0; i < 2; i++) {
+ y = yRef + capY[i];
+ z = zRef + capZ[i];
+ TGeoTranslation *tr = new TGeoTranslation(x, y, z);
+ container->AddNode(cap, i, tr);
+ } // end for i
+ // resistors
+ x = 0.5*(resThickness - fullThickness) + busThickness;
+ for (i = 0; i < 2; i++) {
+ y = yRef + resY[i];
+ z = zRef + resZ[i];
+ TGeoTranslation *tr = new TGeoTranslation(x, y, z);
+ container->AddNode(res, i, tr);
+ } // end for i
+
+ sizes[3] = yRef + pt1000Y;
+ sizes[4] = zRef + pt1000Z[2];
+ sizes[5] = zRef + pt1000Z[7];
return container;
}
-//______________________________________________________________________
-TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBusAndExtensions(
- Bool_t zpos, TGeoManager *mgr){
- // Creates an assembly which contains the pixel bus and its extension
- // and the extension of the MCM.
- // By: Renaud Vernet
- // NOTE: to be defined its material and its extension in the outside direction
- //
-
- // ==== constants =====
+//
+//__________________________________________________________________________________________
+TGeoVolume* AliITSv11GeometrySPD::CreateExtender
+(const Double_t *extenderParams, const TGeoMedium *extenderMedium, TArrayD& sizes) const
+{
+ // ------------------ CREATE AN EXTENDER ------------------------
+ //
+ // This function creates the following picture (in plane xOy)
+ // Should be useful for the definition of the pixel bus and MCM extenders
+ // The origin corresponds to point 0 on the picture, at half-width in Z direction
+ //
+ // Y 7 6 5
+ // ^ +---+---------------------+
+ // | / |
+ // | / |
+ // 0------> X / +---------------------+
+ // / / 3 4
+ // / /
+ // 9 8 / /
+ // +-----------+ /
+ // | /
+ // | /
+ // ---> +-----------+---+
+ // | 0 1 2
+ // |
+ // origin (0,0,0)
+ //
+ //
+ // Takes 6 parameters in the following order :
+ // |--> par 0 : inner length [0-1] / [9-8]
+ // |--> par 1 : thickness ( = [0-9] / [4-5])
+ // |--> par 2 : angle of the slope
+ // |--> par 3 : total height in local Y direction
+ // |--> par 4 : outer length [3-4] / [6-5]
+ // |--> par 5 : width in local Z direction
+ //
- //get the media
- TGeoMedium *medPixelBus = mgr->GetMedium("PIXEL BUS") ;
- TGeoMedium *medPBExtender = mgr->GetMedium("PIXEL BUS EXTENDER") ;
- TGeoMedium *medMCMExtender = mgr->GetMedium("MCM EXTENDER") ;
- //geometrical constants
- const Double_t kGroundingThickness = 0.07 * fgkmm ;
- const Double_t kGrounding2pixelBusDz = 0.625 * fgkmm ;
- const Double_t kPixelBusThickness = 0.28 * fgkmm ;
- const Double_t kGroundingWidthX = 170.501 * fgkmm ;
- const Double_t kPixelBusContactDx = 1.099 * fgkmm ;
- const Double_t kPixelBusWidthY = 13.8 * fgkmm ;
- //design=20 deg.
- const Double_t kPixelBusContactPhi = 20.0 * TMath::DegToRad();
- //design=?? 70 deg. seems OK
- const Double_t kPbExtenderPsi = 70.0 * TMath::DegToRad();
- const Double_t kPbExtenderWidthY = 11.0 * fgkmm ;
- const Double_t kPbExtenderTopZ = 2.72 * fgkmm ;
- const Double_t kMcmThickness = 0.35 * fgkmm ;
- const Double_t kMcmExtenderThickness = 0.20 * fgkmm ;
- const Double_t kDeltaMcmMcmextender = 1.6 * fgkmm ;
- const Double_t kHalfStaveTotalLength = 247.64 * fgkmm ;
- const Double_t kDeltaYOrigin = 15.95/2.* fgkmm ;
- const Double_t kDeltaXOrigin = 1.1 * fgkmm ;
- const Double_t kDeltaZOrigin = kHalfStaveTotalLength / 2. ;
+ Double_t slopeDeltaX = (extenderParams[3] - extenderParams[1] * TMath::Cos(extenderParams[2])) / TMath::Tan(extenderParams[2]);
- const Double_t kGrounding2pixelBusDz2 = kGrounding2pixelBusDz+
- kGroundingThickness/2. + kPixelBusThickness/2. ;
- const Double_t kPixelBusWidthX = kGroundingWidthX ;
- const Double_t kPixelBusRaiseLength = (kPixelBusContactDx-
- kPixelBusThickness*TMath::Sin(kPixelBusContactPhi))/
- TMath::Cos(kPixelBusContactPhi) ;
- const Double_t kPbExtenderBaseZ = kGrounding2pixelBusDz2 +
- kPixelBusRaiseLength*TMath::Sin(kPixelBusContactPhi) +
- 2*kPixelBusThickness*TMath::Sin(kPixelBusContactPhi)*
- TMath::Tan(kPixelBusContactPhi) ;
- const Double_t kPbExtenderDeltaZ = kPbExtenderTopZ-kPbExtenderBaseZ ;
- const Double_t kPbExtenderEndPointX = 2*kDeltaZOrigin - kGroundingWidthX -
- 2*kPixelBusThickness*TMath::Sin(kPixelBusContactPhi) ;
- const Double_t kMcmextenderEndPointX = kDeltaZOrigin - 48.2 * fgkmm ;
- const Double_t kMcmExtenderWidthY = kPbExtenderWidthY ;
+ Double_t extenderXtruX[10] = {
+ 0 ,
+ extenderParams[0] ,
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) ,
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX ,
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX + extenderParams[4],
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX + extenderParams[4],
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX ,
+ extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX - extenderParams[1] * TMath::Sin(extenderParams[2]) ,
+ extenderParams[0] ,
+ 0
+ } ;
- //===== end constants =====
+ Double_t extenderXtruY[10] = {
+ 0 ,
+ 0 ,
+ extenderParams[1] * (1-TMath::Cos(extenderParams[2])) ,
+ extenderParams[3] - extenderParams[1] ,
+ extenderParams[3] - extenderParams[1] ,
+ extenderParams[3] ,
+ extenderParams[3] ,
+ extenderParams[3] - extenderParams[1] * (1-TMath::Cos(extenderParams[2])) ,
+ extenderParams[1] ,
+ extenderParams[1]
+ } ;
-
- /*
- // ----------------- CREATE THE PIXEL BUS --------------------------
- // At the end of the pixel bus, a small piece is added for the contact
- // with the pixel bus extender.
- // The whole piece is made with an extrusion, using 7 points
- //
- // 4
- // /\
- // 6 5 / \ 3
- // +-----------------------------+ /
- // | /
- // +-----------------------------+--+
- // 0 1 2
- //
- // The length of the pixel bus is defined (170.501mm) by the technical design
- // this length corresponds to distance [0-1] and [6-5]
+ if (sizes.GetSize() != 3) sizes.Set(3);
+ Double_t &thickness = sizes[0] ;
+ Double_t &length = sizes[1] ;
+ Double_t &width = sizes[2] ;
- */
+ thickness = extenderParams[3] ;
+ width = extenderParams[5] ;
+ length = extenderParams[0] + extenderParams[1] * TMath::Sin(extenderParams[2]) + slopeDeltaX + extenderParams[4] ;
- TGeoVolumeAssembly *pixelBus = new TGeoVolumeAssembly("PIXEL BUS");
+ // creation of the volume
+ TGeoXtru *extenderXtru = new TGeoXtru(2);
+ TGeoVolume *extenderXtruVol = new TGeoVolume("EXTENDER",extenderXtru,extenderMedium) ;
+ extenderXtru->DefinePolygon(10,extenderXtruX,extenderXtruY);
+ extenderXtru->DefineSection(0,-0.5*extenderParams[4]);
+ extenderXtru->DefineSection(1, 0.5*extenderParams[4]);
+ return extenderXtruVol ;
+}
- // definition of the 7 points for the extrusion
- Double_t pixelBusXtruX[7] = {
- -kPixelBusWidthX/2. ,
- kPixelBusWidthX/2. ,
- kPixelBusWidthX/2. + kPixelBusThickness * TMath::Sin(kPixelBusContactPhi) ,
- kPixelBusWidthX/2. + kPixelBusThickness * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) ,
- kPixelBusWidthX/2. + kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi),
- kPixelBusWidthX/2. ,
- -kPixelBusWidthX/2.
- } ;
- Double_t pixelBusXtruY[7] = {
- -kPixelBusThickness/2. ,
- -kPixelBusThickness/2. ,
- -kPixelBusThickness/2. + kPixelBusThickness *
- (1 - TMath::Cos(kPixelBusContactPhi)) ,
- -kPixelBusThickness/2. + kPixelBusThickness *
- (1 - TMath::Cos(kPixelBusContactPhi)) +
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) ,
- kPixelBusThickness/2. + kPixelBusRaiseLength *
- TMath::Sin(kPixelBusContactPhi) ,
- kPixelBusThickness/2. ,
- kPixelBusThickness/2.
- } ;
+//______________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBusAndExtensions
+(Bool_t /*zpos*/, TGeoManager *mgr) const
+{
+ //
+ // Creates an assembly which contains the pixel bus and its extension
+ // and the extension of the MCM.
+ // By: Renaud Vernet
+ // NOTE: to be defined its material and its extension in the outside direction
+ //
+
+ // ==== constants =====
- // creation of the volume
- TGeoXtru *pixelBusXtru = new TGeoXtru(2);
- TGeoVolume* pixelBusXtruVol = new TGeoVolume("pixelBusXtru",
- pixelBusXtru,medPixelBus) ;
- pixelBusXtru->DefinePolygon(7,pixelBusXtruX,pixelBusXtruY);
- pixelBusXtru->DefineSection(0,-kPixelBusWidthY/2.);
- pixelBusXtru->DefineSection(1, kPixelBusWidthY/2.);
- // --------------- END PIXEL BUS -------------------------------------
+ //get the media
+ //TGeoMedium *medPixelBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr) ; // ??? PIXEL BUS
+ TGeoMedium *medPBExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr) ; // ??? IXEL BUS EXTENDER
+ TGeoMedium *medMCMExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr) ; // ??? MCM EXTENDER
+
+ // //geometrical constants
+ const Double_t kPbextenderThickness = 0.07 * fgkmm ;
+ const Double_t kPbExtenderSlopeAngle = 70.0 * TMath::Pi()/180. ; //design=?? 70 deg. seems OK
+ const Double_t kPbExtenderHeight = 1.92 * fgkmm ; // = 2.6 - (0.28+0.05+0.35) cf design
+ const Double_t kPbExtenderWidthY = 11.0 * fgkmm ;
+ const Double_t kMcmExtenderSlopeAngle = 70.0 * TMath::Pi()/180. ; //design=?? 70 deg. seems OK
+ const Double_t kMcmExtenderThickness = 0.10 * fgkmm ;
+ const Double_t kMcmExtenderHeight = 1.8 * fgkmm ;
+ const Double_t kMcmExtenderWidthY = kPbExtenderWidthY ;
+ // const Double_t groundingThickness = 0.07 * fgkmm ;
+ // const Double_t grounding2pixelBusDz = 0.625 * fgkmm ;
+ // const Double_t pixelBusThickness = 0.28 * fgkmm ;
+ // const Double_t groundingWidthX = 170.501 * fgkmm ;
+ // const Double_t pixelBusContactDx = 1.099 * fgkmm ;
+ // const Double_t pixelBusWidthY = 13.8 * fgkmm ;
+ // const Double_t pixelBusContactPhi = 20.0 * TMath::Pi()/180. ; //design=20 deg.
+ // const Double_t pbExtenderTopZ = 2.72 * fgkmm ;
+ // const Double_t mcmThickness = 0.35 * fgkmm ;
+ // const Double_t halfStaveTotalLength = 247.64 * fgkmm ;
+ // const Double_t deltaYOrigin = 15.95/2.* fgkmm ;
+ // const Double_t deltaXOrigin = 1.1 * fgkmm ;
+ // const Double_t deltaZOrigin = halfStaveTotalLength / 2. ;
+ // const Double_t grounding2pixelBusDz2 = grounding2pixelBusDz+groundingThickness/2. + pixelBusThickness/2. ;
+ // const Double_t pixelBusWidthX = groundingWidthX ;
+ // const Double_t pixelBusRaiseLength = (pixelBusContactDx-pixelBusThickness*TMath::Sin(pixelBusContactPhi))/TMath::Cos(pixelBusContactPhi) ;
+ // const Double_t pbExtenderBaseZ = grounding2pixelBusDz2 + pixelBusRaiseLength*TMath::Sin(pixelBusContactPhi) + 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi)*TMath::Tan(pixelBusContactPhi) ;
+ // const Double_t pbExtenderDeltaZ = pbExtenderTopZ-pbExtenderBaseZ ;
+ // const Double_t pbExtenderEndPointX = 2*deltaZOrigin - groundingWidthX - 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi) ;
+ // const Double_t pbExtenderXtru3L = 1.5 * fgkmm ; //arbitrary ?
+ // const Double_t pbExtenderXtru4L = (pbExtenderDeltaZ + pixelBusThickness*(TMath::Cos(extenderSlope)-2))/TMath::Sin(extenderSlope) ;
- // ------------------------- CREATE THE PIXEL BUS EXTENDER -----------
- // The geometry of the extender is a bit complicated sinceit is constrained
- // to be in contact with the pixel bus.
- // It consists of an extrusion using 13 points as shows the scheme below :
- //
- // 8 7 6
- // +---+---------------------+
- // / |
- // / |
- // / +---------------------+
- // / / 4 5
- // / /
- // 11 10 9 / /
- // +---+-----------+ /
- // / /
- // / /
- // / +-----------+---+
- // 12 + / 1 2 3
- // \ /
- // \ /
- // +
- // 0
+ // const Double_t kMcmExtenderEndPointX = deltaZOrigin - 48.2 * fgkmm ;
+ // const Double_t kMcmExtenderXtru3L = 1.5 * fgkmm ;
- // ==== constants =====
- const Double_t kPbExtenderXtru3L = 1.5 * fgkmm ; //arbitrary ?
- const Double_t kPbExtenderXtru4L = (kPbExtenderDeltaZ +
- kPixelBusThickness*(TMath::Cos(kPbExtenderPsi)-2))/
- TMath::Sin(kPbExtenderPsi) ;
- //===== end constants =====
+ // //===== end constants =====
- TGeoVolumeAssembly *pbExtender = new TGeoVolumeAssembly("PIXEL BUS EXTENDER");
- Double_t pbExtenderXtruX[13] = {
- 0,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) + kPbExtenderXtru3L ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) +
- kPbExtenderXtru3L + kPixelBusThickness * TMath::Sin(kPbExtenderPsi) ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) +
- kPbExtenderXtru3L + kPixelBusThickness *
- TMath::Sin(kPbExtenderPsi) + kPbExtenderXtru4L *
- TMath::Cos(kPbExtenderPsi) ,
- kPbExtenderEndPointX ,
- kPbExtenderEndPointX ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) +
- kPbExtenderXtru3L + kPixelBusThickness * TMath::Sin(kPbExtenderPsi)+
- kPbExtenderXtru4L * TMath::Cos(kPbExtenderPsi) ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) +
- kPbExtenderXtru3L + kPixelBusThickness * TMath::Sin(kPbExtenderPsi)+
- kPbExtenderXtru4L * TMath::Cos(kPbExtenderPsi) - kPixelBusThickness*
- TMath::Sin(kPbExtenderPsi),
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) + kPbExtenderXtru3L ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) ,
- kPixelBusRaiseLength * TMath::Cos(kPixelBusContactPhi) -
- kPixelBusThickness*TMath::Sin(kPixelBusContactPhi) ,
- -kPixelBusThickness * TMath::Sin(kPixelBusContactPhi)
- } ;
- Double_t pbExtenderXtruY[13] = {
- 0,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness * (1-TMath::Cos(kPbExtenderPsi)) ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness * (1-TMath::Cos(kPbExtenderPsi)) +
- kPbExtenderXtru4L * TMath::Sin(kPbExtenderPsi) ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness * (1-TMath::Cos(kPbExtenderPsi)) +
- kPbExtenderXtru4L * TMath::Sin(kPbExtenderPsi) ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness * (1-TMath::Cos(kPbExtenderPsi)) +
- kPbExtenderXtru4L * TMath::Sin(kPbExtenderPsi) +
- kPixelBusThickness ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness * (1-TMath::Cos(kPbExtenderPsi)) +
- kPbExtenderXtru4L * TMath::Sin(kPbExtenderPsi) +
- kPixelBusThickness ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi) +
- kPixelBusThickness + kPbExtenderXtru4L *
- TMath::Sin(kPbExtenderPsi),
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi)+kPixelBusThickness ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi)+kPixelBusThickness ,
- kPixelBusRaiseLength * TMath::Sin(kPixelBusContactPhi)+kPixelBusThickness*
- TMath::Cos(kPixelBusContactPhi) ,
- kPixelBusThickness * TMath::Cos(kPixelBusContactPhi)
- } ;
+ const Double_t kPbExtenderInnerLength = 10. * fgkmm ;
+ const Double_t kPbExtenderOuterLength = 15. * fgkmm ;
+ const Double_t kMcmExtenderInnerLength = 10. * fgkmm ;
+ const Double_t kMcmExtenderOuterLength = 15. * fgkmm ;
- // creation of the volume
- TGeoXtru *pbExtenderXtru = new TGeoXtru(2);
- TGeoVolume *pbExtenderXtruVol = new TGeoVolume("pbExtenderXtru",
- pbExtenderXtru,medPBExtender) ;
- pbExtenderXtru->DefinePolygon(13,pbExtenderXtruX,pbExtenderXtruY);
- pbExtenderXtru->DefineSection(0,-kPbExtenderWidthY/2.);
- pbExtenderXtru->DefineSection(1, kPbExtenderWidthY/2.);
- // -------------- END PIXEL BUS EXTENDER -----------------------------
-
-
- // ------------------ CREATE THE MCM EXTENDER -------------------
- //
- // The MCM extender is located betwen the MCM and the Pixel Bus Extender
- // It consists of an extrusion using 10 points as shows the scheme below :
- //
- // 7 6 5
- // +---+---------------------+
- // / |
- // / |
- // / +---------------------+
- // / / 3 4
- // / /
- // 9 8 / /
- // +-----------+ /
- // | /
- // | /
- // +-----------+---+
- // 0 1 2
-
- //constants
- const Double_t kMcmExtenderXtru3L = 1.5 * fgkmm ;
- //end constants
-
- TGeoVolumeAssembly *mcmExtender = new TGeoVolumeAssembly("MCM EXTENDER");
- Double_t mcmExtenderXtruX[10] = {
- 0 ,
- kMcmExtenderXtru3L ,
- kMcmExtenderXtru3L + kMcmExtenderThickness * TMath::Sin(kPbExtenderPsi) ,
- kMcmExtenderXtru3L + kMcmExtenderThickness * TMath::Sin(kPbExtenderPsi) +
- kDeltaMcmMcmextender / TMath::Tan(kPbExtenderPsi) ,
- kMcmextenderEndPointX ,
- kMcmextenderEndPointX ,
- kMcmExtenderXtru3L + kMcmExtenderThickness * TMath::Sin(kPbExtenderPsi) +
- kDeltaMcmMcmextender / TMath::Tan(kPbExtenderPsi) ,
- kMcmExtenderXtru3L + kDeltaMcmMcmextender / TMath::Tan(kPbExtenderPsi) ,
- kMcmExtenderXtru3L ,
- 0
- } ;
-
- Double_t mcmExtenderXtruY[10] = {
- 0 ,
- 0 ,
- kMcmExtenderThickness*(1.-TMath::Cos(kPbExtenderPsi)),
- kMcmExtenderThickness*(1.-TMath::Cos(kPbExtenderPsi))+kDeltaMcmMcmextender,
- kMcmExtenderThickness*(1.-TMath::Cos(kPbExtenderPsi))+kDeltaMcmMcmextender,
- kMcmExtenderThickness*(2.-TMath::Cos(kPbExtenderPsi))+kDeltaMcmMcmextender,
- kMcmExtenderThickness*(2.-TMath::Cos(kPbExtenderPsi))+kDeltaMcmMcmextender,
- kMcmExtenderThickness + kDeltaMcmMcmextender ,
- kMcmExtenderThickness ,
- kMcmExtenderThickness ,
- } ;
+ Double_t pbExtenderParams[6] = {kPbExtenderInnerLength, //0
+ kPbextenderThickness, //1
+ kPbExtenderSlopeAngle, //2
+ kPbExtenderHeight, //3
+ kPbExtenderOuterLength, //4
+ kPbExtenderWidthY}; //5
+
+ Double_t mcmExtenderParams[6] = {kMcmExtenderInnerLength, //0
+ kMcmExtenderThickness, //1
+ kMcmExtenderSlopeAngle, //2
+ kMcmExtenderHeight, //3
+ kMcmExtenderOuterLength, //4
+ kMcmExtenderWidthY}; //5
- // creation of the volume
- TGeoXtru *mcmExtenderXtru = new TGeoXtru(2);
- TGeoVolume *mcmExtenderXtruVol = new TGeoVolume("mcmExtenderXtru",
- mcmExtenderXtru,medMCMExtender) ;
- mcmExtenderXtru->DefinePolygon(10,mcmExtenderXtruX,mcmExtenderXtruY);
- mcmExtenderXtru->DefineSection(0,-kMcmExtenderWidthY/2.);
- mcmExtenderXtru->DefineSection(1, kMcmExtenderWidthY/2.);
+ TArrayD sizes(3);
+ TGeoVolume* pbExtender = CreateExtender(pbExtenderParams, medPBExtender, sizes) ;
+ printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\tLENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
+ TGeoVolume* mcmExtender = CreateExtender(mcmExtenderParams, medMCMExtender, sizes) ;
+ printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\tLENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
- //-------------- DEFINITION OF GEOMETRICAL TRANSFORMATIONS ---------
- TGeoRotation * commonRot = new TGeoRotation("commonRot",0,90,0);
- commonRot->MultiplyBy(new TGeoRotation("rot",-90,0,0)) ;
- TGeoTranslation * pixelBusTrans = new TGeoTranslation(kPixelBusThickness/2.
- - kDeltaXOrigin + 0.52*fgkmm ,
- -kPixelBusWidthY/2.+ kDeltaYOrigin ,
- -kGroundingWidthX/2.+ kDeltaZOrigin) ;
- TGeoRotation * pixelBusRot = new TGeoRotation(*commonRot);
- TGeoTranslation * pbExtenderTrans = new TGeoTranslation(*pixelBusTrans) ;
- TGeoRotation * pbExtenderRot = new TGeoRotation(*pixelBusRot) ;
- pbExtenderTrans->SetDz(*(pbExtenderTrans->GetTranslation()+2)-
- kPixelBusWidthX/2.-2.*kPixelBusThickness*
- TMath::Sin(kPixelBusContactPhi)) ;
- if (!zpos) {
- pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) -
- (kPixelBusWidthY - kPbExtenderWidthY)/2.);
- }else {
- pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) +
- (kPixelBusWidthY - kPbExtenderWidthY)/2.);
- } // end if !zpos
- pbExtenderTrans->SetDx(*(pbExtenderTrans->GetTranslation()) +
- kPixelBusThickness/2 + 2*kPixelBusThickness*
- TMath::Sin(kPixelBusContactPhi)*
- TMath::Tan(kPixelBusContactPhi)) ;
- TGeoTranslation * mcmExtenderTrans = new TGeoTranslation(0.12*fgkmm +
- kMcmThickness - kDeltaXOrigin,
- pbExtenderTrans->GetTranslation()[1],-4.82);
- TGeoRotation * mcmExtenderRot = new TGeoRotation(*pbExtenderRot);
- //ADD NODES TO ASSEMBLIES
- pixelBus ->AddNode((TGeoVolume*)pixelBusXtruVol,0);
- pbExtender ->AddNode((TGeoVolume*)pbExtenderXtruVol,0);
- mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtruVol,0);
-// mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtru3Vol,0);
-// mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtru3PrimVol,1);
-// mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtru4Vol,2);
-// mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtru4PrimVol,3);
-// mcmExtender ->AddNode((TGeoVolume*)mcmExtenderXtru5Vol,4);
+ // Double_t pixelBusValues[5] = {pixelBusWidthX, //0
+ // pixelBusThickness, //1
+ // pixelBusContactPhi, //2
+ // pixelBusRaiseLength, //3
+ // pixelBusWidthY} ; //4
+ // Double_t pbExtenderValues[8] = {pixelBusRaiseLength, //0
+ // pixelBusContactPhi, //1
+ // pbExtenderXtru3L, //2
+ // pixelBusThickness, //3
+ // extenderSlope, //4
+ // pbExtenderXtru4L, //5
+ // pbExtenderEndPointX, //6
+ // kPbExtenderWidthY} ; //7
- //CREATE FINAL VOLUME ASSEMBLY AND ROTATE IT
- TGeoVolumeAssembly *assembly = new TGeoVolumeAssembly("EXTENDERS");
- assembly->AddNode((TGeoVolume*)pixelBus ,0,
- new TGeoCombiTrans(*pixelBusTrans,*pixelBusRot));
- assembly->AddNode((TGeoVolume*)pbExtender ,0,
- new TGeoCombiTrans(*pbExtenderTrans,*pbExtenderRot));
- assembly->AddNode((TGeoVolume*)mcmExtender ,0,
- new TGeoCombiTrans(*mcmExtenderTrans,*mcmExtenderRot));
- assembly->SetTransparency(50);
- return assembly ;
+ // Double_t mcmExtenderValues[6] = {mcmExtenderXtru3L, //0
+ // mcmExtenderThickness, //1
+ // extenderSlope, //2
+ // deltaMcmMcmExtender, //3
+ // mcmExtenderEndPointX, //4
+ // mcmExtenderWidthY}; //5
+
+ // TGeoVolumeAssembly *pixelBus = new TGeoVolumeAssembly("PIXEL BUS");
+ // CreatePixelBus(pixelBus,pixelBusValues,medPixelBus) ;
+ // TGeoVolumeAssembly *pbExtender = new TGeoVolumeAssembly("PIXEL BUS EXTENDER");
+ // CreatePixelBusExtender(pbExtender,pbExtenderValues,medPBExtender) ;
+ // TGeoVolumeAssembly *mcmExtender = new TGeoVolumeAssembly("MCM EXTENDER");
+ // CreateMCMExtender(mcmExtender,mcmExtenderValues,medMCMExtender) ;
+
+ // //-------------- DEFINITION OF GEOMETRICAL TRANSFORMATIONS -------------------
+ // TGeoRotation * commonRot = new TGeoRotation("commonRot",0,90,0);
+ // commonRot->MultiplyBy(new TGeoRotation("rot",-90,0,0)) ;
+ // TGeoTranslation * pixelBusTrans = new TGeoTranslation(pixelBusThickness/2. - deltaXOrigin + 0.52*fgkmm ,
+ // -pixelBusWidthY/2. + deltaYOrigin ,
+ // -groundingWidthX/2. + deltaZOrigin) ;
+ // TGeoRotation * pixelBusRot = new TGeoRotation(*commonRot);
+ // TGeoTranslation * pbExtenderTrans = new TGeoTranslation(*pixelBusTrans) ;
+ // TGeoRotation * pbExtenderRot = new TGeoRotation(*pixelBusRot) ;
+ // pbExtenderTrans->SetDz(*(pbExtenderTrans->GetTranslation()+2) - pixelBusWidthX/2. - 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi)) ;
+ // if (!zpos) {
+ // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) - (pixelBusWidthY - kPbExtenderWidthY)/2.);
+ // }
+ // else {
+ // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) + (pixelBusWidthY - kPbExtenderWidthY)/2.);
+ // }
+ // pbExtenderTrans->SetDx(*(pbExtenderTrans->GetTranslation()) + pixelBusThickness/2 + 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi)*TMath::Tan(pixelBusContactPhi)) ;
+ // TGeoTranslation * mcmExtenderTrans = new TGeoTranslation(0.12*fgkmm + mcmThickness - deltaXOrigin,
+ // pbExtenderTrans->GetTranslation()[1],
+ // -4.82);
+ // TGeoRotation * mcmExtenderRot = new TGeoRotation(*pbExtenderRot);
+
+ // // add pt1000 components
+ // Double_t pt1000Z = fgkmm * 64400. * 1E-4;
+ // //Double_t pt1000X[10] = {319700., 459700., 599700., 739700., 879700., 1029700., 1169700., 1309700., 1449700., 1589700.};
+ // Double_t pt1000X[10] = {66160., 206200., 346200., 486200., 626200., 776200., 916200., 1056200., 1196200., 1336200.};
+ // Double_t pt1000size[3] = {fgkmm*1.5, fgkmm*0.6, fgkmm*3.1};
+ // Int_t i;
+ // for (i = 0; i < 10; i++) {
+ // pt1000X[i] *= fgkmm * 1E-4;
+ // }
+ // TGeoVolume *pt1000 = mgr->MakeBox("PT1000", 0, 0.5*pt1000size[0], 0.5*pt1000size[1], 0.5*pt1000size[2]);
+ // pt1000->SetLineColor(kGray);
+ // Double_t refThickness = - pixelBusThickness ;
+ // for (i = 0; i < 10; i++) {
+ // TGeoTranslation *tr = new TGeoTranslation(pt1000X[i]-0.5*pixelBusWidthX, 0.002+0.5*(-3.*refThickness+pt1000size[3]), pt1000Z -0.5*pixelBusWidthY);
+ // pixelBus->AddNode(pt1000, i, tr);
+ // }
+
+ //CREATE FINAL VOLUME ASSEMBLY AND ROTATE IT
+ TGeoVolumeAssembly *assembly = new TGeoVolumeAssembly("EXTENDERS");
+ // assembly->AddNode((TGeoVolume*)pixelBus ,0, new TGeoCombiTrans(*pixelBusTrans,*pixelBusRot));
+ // assembly->AddNode((TGeoVolume*)pbExtender ,0, new TGeoCombiTrans(*pbExtenderTrans,*pbExtenderRot));
+ // assembly->AddNode((TGeoVolume*)mcmExtender ,0, new TGeoCombiTrans(*mcmExtenderTrans,*mcmExtenderRot));
+ // assembly->AddNode(mcmExtender,0,new TGeoIdentity());
+ assembly->AddNode(pbExtender,0);
+ assembly->AddNode(mcmExtender,0);
+ // assembly->SetTransparency(50);
+
+ return assembly ;
}
-//______________________________________________________________________
-TGeoVolume* AliITSv11GeometrySPD::CreateStaveBase(Int_t layer,
- Double_t &fullWidth, Double_t &fullHeight, Double_t &fullThickness,
- TGeoManager *mgr){
- // Creates a box which contains the followin parts of the whole stave:
- // - the two layers of grounding foil
- // - the ladders
- // - the thin base of the MCM (except its thick cover)
- // - the pixel bus
- // ---
- // Since it is required by detector numbering conventions,
- // it is required as argument the layer which owns this stave.
- // This number will be used to define the name of the ladder volume,
- // which must be different for layer1 and layer2 objects.
- // ---
- // Arguments:
- // - layer number (will be checked to be 1 or 2)
- // - geometry manager
- // ---
- // Returns:
- // - a TGeoBBox volume containing all this stuff
- // - the size of the container box are stored in the
- // reference-passed variables
+//
+//__________________________________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateHalfStave
+(Bool_t isRight,
+ Int_t layer, Int_t idxCentral, Int_t idxSide,
+ TArrayD &sizes, Bool_t addClips, TGeoManager *mgr)
+{
+ //
+ // Implementation of an half-stave, which depends on the side where we are on the stave.
+ // The convention for "left" and "right" is the same as for the MCM.
+ // The return value is a TGeoAssembly which is structured in such a way that the origin
+ // of its local reference frame coincides with the origin of the whole stave.
//
- // sizes of all objects to be inserted
- // these values are used to compute the total volume of the container
- // and to compute parametrically the position of each piece, instead
- // of putting hard-coded number (this helps in eventually modifying
- // everything)
- Double_t mcmThickness = fgkmm * 0.35;
- Double_t grndThickness = fgkmm * 0.07; // = 0.05 + 0.02
- Double_t sepThickness = fgkmm * 0.05;
-
- Double_t ladderWidth = fgkmm * 70.72;
- Double_t mcmWidth = fgkmm * 105.60;
- Double_t sepLaddersWidth = fgkmm * 0.20;
- Double_t sepMCMWidth = fgkmm * 0.30;
- // separations between central ladders in the two half-staves
- Double_t sepLaddersCtr = fgkmm * 0.40;
-
- Double_t mcmHeight = fgkmm * 15.00;
- // compute the size of the container
- fullWidth = 2.0*sepLaddersCtr + 4.0*ladderWidth +
- 2.0*sepMCMWidth + 2.0*sepLaddersWidth + 2.0*mcmWidth;
- fullHeight = fgkmm * 15.95;
- fullThickness = grndThickness + sepThickness + mcmThickness;
+ // ** CHECK **
- // create the container
- TGeoVolume *container = mgr->MakeBox(Form("LAY%d_STAVE", layer),
- mgr->GetMedium("VACUUM"), 0.5*fullThickness,
- 0.5*fullHeight, 0.5*fullWidth);
+ // idxCentral and idxSide must be different
+ if (idxCentral == idxSide) {
+ AliInfo("Ladders must be inserted in half-stave with different indexes.");
+ idxSide = idxCentral + 1;
+ AliInfo(Form("Central ladder will be inserted with index %d", idxCentral));
+ AliInfo(Form("Side ladder will be inserted with index %d", idxSide));
+ }
- // fill the container going from bottom to top
- // with respect to the thickness direction
+ // define the separations along Z direction between the objects
+ Double_t sepLadderLadder = fgkmm * 0.2; // sep. btw the 2 ladders
+ Double_t sepLadderCenter = fgkmm * 0.4; // sep. btw the "central" ladder and the Z=0 plane in stave ref.
+ Double_t sepLadderMCM = fgkmm * 0.3; // sep. btw the "external" ladder and MCM
+ Double_t sepBusCenter = fgkmm * 0.3; // sep. btw the bus central edge and the Z=0 plane in stave ref.
+
+ // ** VOLUMES **
+
+ // grounding foil
+ TArrayD grndSize(3);
+ // This one line repalces the 3 bellow, BNS.
+ TGeoVolume *grndVol = CreateGroundingFoil(isRight,grndSize,mgr);
+ //TGeoVolume *grndVol = 0;
+ //if (isRight) grndVol = CreateGroundingFoil(kTRUE, grndSize, mgr);
+ //else grndVol = CreateGroundingFoil(kFALSE, grndSize, mgr);
+ Double_t &grndThickness = grndSize[0];
+ Double_t &grndLength = grndSize[1];
+
+ // ladder
+ TArrayD ladderSize(3);
+ TGeoVolume *ladder = CreateLadder(layer, ladderSize, mgr);
+ Double_t ladderThickness = ladderSize[0];
+ Double_t ladderLength = ladderSize[1];
+ Double_t ladderWidth = ladderSize[2];
+
+ // glue between ladders and pixel bus
+ TGeoMedium *medLadGlue = GetMedium("EPOXY$", mgr); // ??? LadderBusGlue
+ Double_t ladGlueThickness = fgkmm * 0.12 - fAlignmentGap;
+ TGeoVolume *ladderGlue = mgr->MakeBox("LADDER_GLUE", medLadGlue, 0.5*ladGlueThickness, 0.5*ladderWidth, 0.5*ladderLength);
+ ladderGlue->SetLineColor(kRed);
+
+ // MCM
+ TArrayD mcmSize(3);
+ TGeoVolumeAssembly *mcm = CreateMCM(!isRight,mcmSize,mgr);
+ //TGeoVolumeAssembly *mcm = 0;
+ //if (isRight) mcm = CreateMCM(kFALSE, mcmSize, mgr);
+ //else mcm = CreateMCM(kTRUE, mcmSize, mgr);
+ Double_t mcmThickness = mcmSize[0];
+ Double_t mcmLength = mcmSize[1];
+ Double_t mcmWidth = mcmSize[2];
+
+ // bus
+ TArrayD busSize(6);
+ TGeoVolumeAssembly *bus = CreatePixelBus(isRight, busSize, mgr);
+ //TGeoVolume *bus = 0;
+ //if (isRight) bus = CreatePixelBus(kTRUE, busSize, mgr);
+ //else bus = CreatePixelBus(kFALSE, busSize, mgr);
+ Double_t busThickness = busSize[0];
+ Double_t busLength = busSize[1];
+ Double_t busWidth = busSize[2];
+
+ // create references for the whole object, as usual
+ if (sizes.GetSize() != 3) sizes.Set(3);
+ Double_t &fullThickness = sizes[0];
+ Double_t &fullLength = sizes[1];
+ Double_t &fullWidth = sizes[2];
+
+ // compute the full size of the container
+ fullLength = sepLadderCenter + 2.0*ladderLength + sepLadderMCM + sepLadderLadder + mcmLength;
+ fullWidth = ladderWidth;
+ fullThickness = grndThickness + fAlignmentGap + mcmThickness + busThickness;
- // 1 - Grounding foil
- // volume
- TGeoVolume *grndVol = CreateGroundingFoil(grndThickness);
- // translation
+ // ** MOVEMENTS **
+
+ // grounding foil (shifted only along thickness)
Double_t xGrnd = -0.5*fullThickness + 0.5*grndThickness;
- TGeoTranslation *grndTrans = new TGeoTranslation(xGrnd, 0.0, 0.0);
- // add to container
- container->AddNode(grndVol, 1, grndTrans);
+ Double_t zGrnd = -0.5*grndLength;
+ if (!isRight) zGrnd = -zGrnd;
+ TGeoTranslation *grndTrans = new TGeoTranslation(xGrnd, 0.0, zGrnd);
- // 2 - Ladders
- // volume (will be replicated 4 times)
- Double_t ladderLength, ladderThickness;
- TGeoVolume *ladder = CreateLadder(layer, ladderLength, ladderWidth,
- ladderThickness, mgr);
- // translations (in thickness direction, the MCM thickness is used)
- // layers are sorted going from the one at largest Z to the one
- // at smallest Z:
+ // ladders (translations along thickness and length)
+ // layers must be sorted going from the one at largest Z to the one at smallest Z:
// -|Zmax| ------> |Zmax|
- // 0 1 2 3
- // but it is more comfortable to start defining their Z position
- // from center
- Double_t xLad = xGrnd + 0.5*grndThickness + 0.5*mcmThickness +
- sepThickness;
- Double_t zLad1 = -0.5*ladderWidth - sepLaddersCtr;
- Double_t zLad0 = zLad1 - ladderWidth - sepLaddersWidth;
- Double_t zLad2 = -zLad1;
- Double_t zLad3 = -zLad0;
- // rotLad->RotateZ(180.0);
- TGeoRotation *rotLad = new TGeoRotation(*gGeoIdentity);
- TGeoCombiTrans *trLad0 = new TGeoCombiTrans(xLad, 0.0, zLad0, rotLad);
- TGeoCombiTrans *trLad1 = new TGeoCombiTrans(xLad, 0.0, zLad1, rotLad);
- TGeoCombiTrans *trLad2 = new TGeoCombiTrans(xLad, 0.0, zLad2, rotLad);
- TGeoCombiTrans *trLad3 = new TGeoCombiTrans(xLad, 0.0, zLad3, rotLad);
- // add to container
- container->AddNode(ladder, 0, trLad0);
- container->AddNode(ladder, 1, trLad1);
- container->AddNode(ladder, 2, trLad2);
- container->AddNode(ladder, 3, trLad3);
-
- // 3 - MCM (only the base, the cover is added as a separate
- // volume in a more global 'stave' assembly volume (will be
- // replicated twice)
- TGeoVolume *mcm = CreateMCMBase(mgr);
- // translations (in the X direction, MCM is at the same
- // level as ladder) the two copies of the MCM are placed at
- // the same distance from the center, on both sides and their
- // sorting is the same as ladders' one (MCM0 is at Z < 0,
- // MCM1 at Z > 0);
- Double_t xMCM = xLad;
- Double_t yMCM = 0.5*(fullHeight - mcmHeight);
- Double_t zMCM1 = zLad3 + 0.5*ladderWidth + 0.5*mcmWidth + sepMCMWidth;
- Double_t zMCM0 = -zMCM1;
- // create the common correction rotations
- TGeoRotation *rotCorr0 = new TGeoRotation(*gGeoIdentity);
- TGeoRotation *rotCorr1 = new TGeoRotation(*gGeoIdentity);
- rotCorr0->RotateY( 90.0);
- rotCorr1->RotateY(-90.0);
- TGeoCombiTrans *trMCM0 = new TGeoCombiTrans(xMCM,yMCM,zMCM0,rotCorr0);
- TGeoCombiTrans *trMCM1 = new TGeoCombiTrans(xMCM,yMCM,zMCM1,rotCorr1);
- // add to container
- container->AddNode(mcm, 0, trMCM0);
- container->AddNode(mcm, 1, trMCM1);
+ // 3 2 1 0
+ // then, for layer 1 ladders they must be placed exactly this way, and in layer 2 at the opposite.
+ // In order to remember the placements, we define as "inner" and "outer" ladder respectively
+ // the one close to barrel center, and the one closer to MCM, respectively.
+ Double_t xLad, zLadIn, zLadOut;
+ xLad = xGrnd + 0.5*(grndThickness + ladderThickness) + 0.01175 - fAlignmentGap;
+ zLadIn = -sepLadderCenter - 0.5*ladderLength;
+ zLadOut = zLadIn - sepLadderLadder - ladderLength;
+ if (!isRight) {
+ zLadIn = -zLadIn;
+ zLadOut = -zLadOut;
+ }
+ TGeoRotation *rotLad = new TGeoRotation(*gGeoIdentity);
+ rotLad->RotateZ(90.0);
+ rotLad->RotateY(180.0);
+ Double_t sensWidth = fgkmm * 12.800;
+ Double_t chipWidth = fgkmm * 15.950;
+ Double_t guardRingWidth = fgkmm * 0.560;
+ Double_t ladderShift = 0.5 * (chipWidth - sensWidth - 2.0*guardRingWidth);
+ TGeoCombiTrans *trLadIn = new TGeoCombiTrans(xLad, ladderShift, zLadIn, rotLad);
+ TGeoCombiTrans *trLadOut = new TGeoCombiTrans(xLad, ladderShift, zLadOut, rotLad);
+
+ // glue between ladders and pixel bus
+ Double_t xLadGlue = xLad + 0.5*ladderThickness + fAlignmentGap - 0.5*ladGlueThickness;
+ TGeoTranslation *trLadGlueIn = new TGeoTranslation(xLadGlue, 0.0, zLadIn);
+ TGeoTranslation *trLadGlueOut = new TGeoTranslation(xLadGlue, 0.0, zLadOut);
+
+ // MCM (length and thickness direction, placing at same level as the ladder, which implies to
+ // recompute the position of center, because ladder and MCM have NOT the same thickness)
+ // the two copies of the MCM are placed at the same distance from the center, on both sides
+ Double_t xMCM = xGrnd + 0.5*grndThickness + 0.5*mcmThickness + fAlignmentGap;
+ Double_t yMCM = 0.5*(fullWidth - mcmWidth);
+ Double_t zMCM = zLadOut - 0.5*ladderLength - 0.5*mcmLength - sepLadderMCM;
+ if (!isRight) zMCM = zLadOut + 0.5*ladderLength + 0.5*mcmLength + sepLadderMCM;
+
+ // create the correction rotations
+ TGeoRotation *rotMCM = new TGeoRotation(*gGeoIdentity);
+ rotMCM->RotateY(90.0);
+ TGeoCombiTrans *trMCM = new TGeoCombiTrans(xMCM, yMCM, zMCM, rotMCM);
+
+ // bus (length and thickness direction)
+ Double_t xBus = xLad + 0.5*ladderThickness + 0.5*busThickness + fAlignmentGap + ladGlueThickness;
+ Double_t yBus = 0.5*(fullWidth - busWidth);
+ Double_t zBus = -0.5*busLength - sepBusCenter;
+ if (!isRight) zBus = -zBus;
+ TGeoTranslation *trBus = new TGeoTranslation(xBus, yBus, zBus);
+
+ // create the container
+ TGeoVolumeAssembly *container = 0;
+ if (idxCentral+idxSide==5) {
+ container = new TGeoVolumeAssembly("HALF-STAVE1");
+ } else {
+ container = new TGeoVolumeAssembly("HALF-STAVE0");
+ }
+
+ // add to container all objects
+ container->AddNode(grndVol, 1, grndTrans);
+ // ladders are inserted in different order to respect numbering scheme
+ // which is inverted when going from outer to inner layer
+ container->AddNode(ladder, idxCentral, trLadIn);
+ container->AddNode(ladder, idxSide, trLadOut);
+ container->AddNode(ladderGlue, 0, trLadGlueIn);
+ container->AddNode(ladderGlue, 1, trLadGlueOut);
+ container->AddNode(mcm, 0, trMCM);
+ container->AddNode(bus, 0, trBus);
+
+ if (addClips) {
+
+ // ad clips if requested
+ // create clip volume
+ TArrayD clipSize(3);
+ TGeoVolume *clip = CreateClip(clipSize, mgr);
+ // define clip movements (width direction)
+ TGeoRotation *rotClip = new TGeoRotation(*gGeoIdentity);
+ rotClip->RotateZ(-90.0);
+ rotClip->RotateX(180.0);
+ Double_t x = xBus + 0.5*busThickness;//clipSize[3] - clipSize[2];
+ Double_t y = 0.5 * (fullWidth - busWidth) - clipSize[6] - fgkmm*0.48;
+ Double_t z1 = zBus + busSize[4];
+ Double_t z2 = zBus + busSize[5];
+ cout << z1 << ' ' << z2 << endl;
+ TGeoCombiTrans *trClip1 = new TGeoCombiTrans(x, y, z1, rotClip);
+ TGeoCombiTrans *trClip2 = new TGeoCombiTrans(x, y, z2, rotClip);
+ container->AddNode(clip, 0, trClip1);
+ container->AddNode(clip, 1, trClip2);
+ }
+
+
return container;
}
-//______________________________________________________________________
-void AliITSv11GeometrySPD::StavesInSector(TGeoVolume *moth, TGeoManager *mgr){
+//
+//__________________________________________________________________________________________
+TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateStave
+(Int_t layer,
+ TArrayD &sizes, Bool_t addClips, TGeoManager *mgr) {
+ // This method uses all other ones which create pieces of the stave
+ // and assemblies everything together, in order to return the whole
+ // stave implementation, which is returned as a TGeoVolumeAssembly,
+ // due to the presence of some parts which could generate fake overlaps
+ // when put on the sector.
+ // This assembly contains, going from bottom to top in the thickness direction:
+ // - the complete grounding foil, defined by the "CreateGroundingFoil" method which
+ // already joins some glue and real groudning foil layers for the whole stave (left + right);
+ // - 4 ladders, which are sorted according to the ALICE numbering scheme, which depends
+ // on the layer we are building this stave for;
+ // - 2 MCMs (a left and a right one);
+ // - 2 pixel buses (a left and a right one);
+ // ---
+ // Arguments:
+ // - the layer number, which determines the displacement and naming of sensitive volumes
+ // - a TArrayD passed by reference which will contain the size of virtual box containing the stave
+ // - the TGeoManager
+ //
+
+ // create the container
+ TGeoVolumeAssembly *container = new TGeoVolumeAssembly(Form("LAY%d_STAVE", layer));
+
+ // define the indexes of the ladders in order to have the correct order
+ // keeping in mind that the staves will be inserted as they are on layer 2, while
+ // they are rotated around their local Y axis when inserted on layer 1, so in this case
+ // they must be put in the "wrong" order to turn out to be right at the end
+ // The convention is:
+ // -|Zmax| ------> |Zmax|
+ // 3 2 1 0
+ // with respect to the "native" stave reference frame, "left" is in the positive Z
+ // this leads the definition of these indexes:
+
+ Int_t idxCentralL, idxSideL, idxCentralR, idxSideR;
+ if (layer == 1) {
+ idxSideL = 3;
+ idxCentralL = 2;
+ idxCentralR = 1;
+ idxSideR = 0;
+ }
+ else {
+ idxSideL = 0;
+ idxCentralL = 1;
+ idxCentralR = 2;
+ idxSideR = 3;
+ }
+
+ // create the two half-staves
+ TArrayD sizeL(3), sizeR(3);
+ TGeoVolumeAssembly *hstaveL = CreateHalfStave(kFALSE, layer, idxCentralL, idxSideL, sizeL, addClips, mgr);
+ TGeoVolumeAssembly *hstaveR = CreateHalfStave(kTRUE, layer, idxCentralR, idxSideR, sizeR, addClips, mgr);
+
+ // copy the size to the stave's one
+ sizes[0] = sizeL[0];
+ sizes[1] = sizeR[1] + sizeL[1];
+ sizes[2] = sizeL[2];
+
+ // add to container all objects
+ container->AddNode(hstaveL, 1);
+ container->AddNode(hstaveR, 1);
+
+ return container;
+}
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::SetAddStave(Bool_t *mask)
+{
+ //
+ // Define a mask which states qhich staves must be placed.
+ // It is a string which must contain '0' or '1' depending if
+ // a stave must be placed or not.
+ // Each place is referred to one of the staves, so the first
+ // six characters of the string will be checked.
+ //
+
+ Int_t i;
+ for (i = 0; i < 6; i++) fAddStave[i] = mask[i];
+}
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::StavesInSector(TGeoVolume *moth, TGeoManager *mgr) {
+ //
// Unification of essentially two methods:
// - the one which creates the sector structure
// - the one which returns the complete stave
// but it inserts in the mother volume (argument 'moth') all the stuff
// which composes the complete SPD sector.
// ---
+ // In the following, the stave numbering order used for arrays is the same as
+ // defined in the GetSectorMountingPoints():
+ // /5
+ // /\/4
+ // 1\ \/3
+ // 0|___\/2
+ // ---
// Arguments: see description of "CarbonFiberSector" method.
//
- // This service class is useful to this method only
- // to store in a meaningful way the data about the
- // rounded corners of the support, and some computations
- // which could turn out to be useful for stave placement
- // 'left' and 'right' (L/R) here are considered looking the support
- // from the positive Z side.
- // The sign of the radius is used to know what kind of tangent
- // must be found for the two circles which describe the rounded angles.
- class clsSupportPlane {
- public:
- // curvature center and radius (with sign) of left corner
- Double_t xL, yL, rL, sL;
- // curvature center and radius (with sign) of right corner
- Double_t xR, yR, rR, sR;
- // shift from the innermost position (where the stave edge is
- // in the point where the rounded corner begins
- Double_t shift;
-
- // Constructor with arguments which allow to set
- // directly everything since the values are given in
- // millimiters from drawings, they must be converted to cm
- clsSupportPlane
- (Double_t xLin, Double_t yLin, Double_t rLin, Double_t sLin,
- Double_t xRin, Double_t yRin, Double_t rRin, Double_t sRin,
- Double_t shiftin) :
- xL(xLin), yL(yLin), rL(rLin), sL(sLin), xR(xRin), yR(yRin),
- rR(rRin), sR(sRin), shift(shiftin) {
- xL *= fgkmm;
- yL *= fgkmm;
- rL *= fgkmm;
- xR *= fgkmm;
- yR *= fgkmm;
- rR *= fgkmm;
- shift *= fgkmm;
- } // end group.
-
- // Computation of the line tangent to both circles
- // defined here which is taken above or below the center
- // according to the radius sign. This method returns:
- // - the mid-popint of the segment between the two
- // points where the tangent touches the two circles,
- // - the inclination of this segment
- // - the half-length of this segment
- Double_t TangentSegment(Double_t &midX, Double_t &midY,
- Double_t &phi){
- // compute the straight line which is tangent to
- // the two circles and extract its inclination
- // 'phi' w.r. to X axis
- Double_t dx = xL - xR;
- Double_t dy = yL - yR;
- Double_t R = rL*sL + rR*sR;
- Double_t delta = dy*dy + dx*dx - R*R;
- Double_t tan05phi = (-dy+TMath::Sqrt(delta))/(R - dx);
- phi = 2.0 * TMath::ATan(tan05phi);
- // compute the points where this line touchs the
- // two circles
- Double_t leftX = xL + sL*rL*TMath::Cos(phi);
- Double_t leftY = yL + sL*rL*TMath::Sin(phi);
- Double_t rightX = xR + sR*rR*TMath::Cos(phi);
- Double_t rightY = yR + sR*rR*TMath::Sin(phi);
- // compute the mid point
- midX = 0.5 * (leftX + rightX);
- midY = 0.5 * (leftY + rightY);
- // compute angular coefficient for the line joining
- // the two points found using the above method
- dx = rightX - leftX;
- dy = rightY - leftY;
- phi = TMath::ATan2(dy, dx);
- // compute the half-length of this segment
- Double_t len = 0.5*TMath::Sqrt((rightX-leftX)*
- (rightX-leftX) + (rightY-leftY)*
- (rightY-leftY));
- //MM cout << 2.0*len << endl;
- return len;
- } // end function
- }; // end class
- // instantiate this class for each layer1 and layer2 corners
- clsSupportPlane *plane[6] = {0, 0, 0, 0, 0, 0};
-
- // layer 2
- plane[0] = new clsSupportPlane( 10.830, 16.858, 0.60, 1., 19.544,
- 10.961, 0.8, 1., 1.816);
- plane[1] = new clsSupportPlane(- 0.733, 17.486, 0.60, 1., 11.581,
- 13.371, 0.6, -1., -0.610);
- plane[2] = new clsSupportPlane(-12.252, 16.298, 0.60, 1., 0.562,
- 14.107, 0.6, -1., -0.610);
- plane[3] = new clsSupportPlane(-22.276, 12.948, 0.85, 1., -10.445,
- 13.162, 0.6, -1., -0.610);
- // layer 1
- plane[4] = new clsSupportPlane(- 3.123, -14.618, 0.50, 1., 11.280,
- -14.473, 0.9, -1., -0.691);
- plane[5] = new clsSupportPlane(-13.187, -19.964, 0.50, -1., - 3.833,
- -17.805, 0.6, -1., 1.300);
- // put the sector in the container
- //CarbonFiberSector(moth, xAAtubeCenter0, yAAtubeCenter0, mgr);
-
- // create stave volume
- Double_t staveHeight = 1.595, staveThickness;
- TGeoVolume *stave1 = CreateStave(1, staveThickness,mgr);
- TGeoVolume *stave2 = CreateStave(2, staveThickness,mgr);
-
- // compute positions and rotation angles
- Double_t xm, ym, halfPlaneHeight, heightDiff, position, phi, xPos, yPos;
+ Double_t shift[6]; // shift from the innermost position in the sector placement plane
+ // (where the stave edge is in the point where the rounded corner begins)
+
+ shift[0] = fgkmm * -0.691;
+ shift[1] = fgkmm * 1.300;
+ shift[2] = fgkmm * 1.816;
+ shift[3] = fgkmm * -0.610;
+ shift[4] = fgkmm * -0.610;
+ shift[5] = fgkmm * -0.610;
+
+ // create stave volumes (different for layer 1 and 2)
+ TArrayD staveSizes1(3), staveSizes2(3);
+ Double_t &staveHeight = staveSizes1[2], &staveThickness = staveSizes1[0];
+ TGeoVolume *stave1 = CreateStave(1, staveSizes1, kFALSE, mgr);
+ TGeoVolume *stave2clips = CreateStave(2, staveSizes2, kTRUE, mgr);
+ TGeoVolume *stave2noclips = CreateStave(2, staveSizes2, kFALSE, mgr);
+
+ Double_t xL, yL; // leftmost edge of mounting point (XY projection)
+ Double_t xR, yR; // rightmost edge of mounting point (XY projection)
+ Double_t xM, yM; // middle point of the segment L-R
+ Double_t dx, dy; // (xL - xR) and (yL - yR)
+ Double_t widthLR; // width of the segment L-R
+ Double_t angle; // stave rotation angle in degrees
+ Double_t diffWidth; // difference between mounting plane width and stave width (smaller)
+ Double_t xPos, yPos; // final translation of the stave
+ Double_t parMovement; // translation in the LR plane direction
+
+ // loop on staves
for (Int_t i = 0; i < 6; i++) {
- //
- // This functioninserted here for test. Added By Bjorn Nilsen
- // August 29 2007.
- Double_t x0,y0,x1,y1; // should be move out of loop
- Bool_t lreturn;
- lreturn = GetSectorMountingPoints(i,x0,y0,x1,y1,mgr);
- //
- // recall the geometry computations defined for the classe
- halfPlaneHeight = plane[i]->TangentSegment(xm, ym, phi);
- // compute the difference between plane and stave heights
- heightDiff = halfPlaneHeight - 0.5*staveHeight;
- // It is necessary to shift the stave by at least
- // an amount equal to this difference
- // to avoid overlaps.
- // Moreover, some more shift is done for building reasons,
- // and it depends on the single plane (data-member 'shift')
- position = heightDiff + plane[i]->shift;
- // taking into account this shift plus another in the direction
- // normal to the support plane, due to the stave thickness,
- // the final position of the stave is computed in a temporary
- // reference frame where the mid-point of the support plane
- // is in the origin
- if (i < 4) {
- ParallelPosition(0.5*staveThickness, position, phi,
- xPos, yPos);
- }else if (i == 4) {
- ParallelPosition(-0.5*staveThickness, -position, phi,
- xPos, yPos);
- }else {
- ParallelPosition(-0.5*staveThickness, -position, phi,
- xPos, yPos);
+ // in debug mode, if this stave is not required, it is skipped
+ if (!fAddStave[i]) continue;
+ // retrieve reference points
+ GetSectorMountingPoints(i, xL, yL, xR, yR);
+ xM = 0.5 * (xL + xR);
+ yM = 0.5 * (yL + yR);
+ dx = xL - xR;
+ dy = yL - yR;
+ angle = TMath::ATan2(dy, dx);
+ widthLR = TMath::Sqrt(dx*dx + dy*dy);
+ diffWidth = 0.5*(widthLR - staveHeight);
+ // first, a movement along this plane must be done
+ // by an amount equal to the width difference
+ // and then the fixed shift must also be added
+ parMovement = diffWidth + shift[i];
+ // due to stave thickness, another movement must be done
+ // in the direction normal to the mounting plane
+ // which is computed using an internal method, in a reference frame where the LR segment
+ // has its middle point in the origin and axes parallel to the master reference frame
+ if (i == 0) {
+ ParallelPosition(-0.5*staveThickness, -parMovement, angle, xPos, yPos);
+ }
+ if (i == 1) {
+ ParallelPosition( 0.5*staveThickness, -parMovement, angle, xPos, yPos);
+ }
+ else {
+ ParallelPosition( 0.5*staveThickness, parMovement, angle, xPos, yPos);
}
// then we go into the true reference frame
- xPos += xm;
- yPos += ym;
- /*
- // TEMP
- TGeoVolume *tubeTemp1 = mgr->MakeTube("tubeTemp1", NULL,
- 0.0, 0.01, 50.0);
- TGeoTranslation *trTemp1 = new TGeoTranslation(xm, ym, 0.0);
- tubeTemp1->SetLineColor(kRed);
- moth->AddNode(tubeTemp1, i + 1, trTemp1);
- TGeoVolume *tubeTemp2 = mgr->MakeTube("tubeTemp2", NULL,
- 0.0, 0.01, 50.0);
- TGeoTranslation *trTemp2 = new TGeoTranslation(xPos, yPos, 0.0);
- tubeTemp2->SetLineColor(kBlue);
- moth->AddNode(tubeTemp2, i + 1, trTemp2);
- // END TEMP
- */
+ xPos += xM;
+ yPos += yM;
// using the parameters found here, compute the
// translation and rotation of this stave:
TGeoRotation *rot = new TGeoRotation(*gGeoIdentity);
- if (i >= 4) rot->RotateY(180.0);
- rot->RotateZ(90.0 + phi * TMath::RadToDeg());
- TGeoCombiTrans *trans = new TGeoCombiTrans(xPos,yPos,0.0,rot);
- if (i < 4) {
- moth->AddNode(stave2, i, trans);
- }else {
- moth->AddNode(stave1, i - 4, trans);
- } // end if i<4
- } // for i
+ if (i == 0 || i == 1) rot->RotateX(180.0);
+ rot->RotateZ(90.0 + angle * TMath::RadToDeg());
+ TGeoCombiTrans *trans = new TGeoCombiTrans(xPos, yPos, 0.0, rot);
+ if (i == 0 || i == 1) {
+ moth->AddNode(stave1, i, trans);
+ }
+ else {
+ if (i == 2) {
+ moth->AddNode(stave2noclips, i, trans);
+ }
+ else {
+ moth->AddNode(stave2clips, i, trans);
+ }
+ }
+ }
}
-//______________________________________________________________________
-void AliITSv11GeometrySPD::ParallelPosition(Double_t dist1, Double_t dist2,
- Double_t phi, Double_t &x, Double_t &y){
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::ParallelPosition(Double_t dist1, Double_t dist2,
+ Double_t phi, Double_t &x, Double_t &y) const {
// Performs the following steps:
- // 1 - finds a straight line parallel to the one passing through
- // the origin and with angle 'phi' with X axis (phi in RADIANS);
- // 2 - finds another line parallel to the previous one, with a
- // distance 'dist1' from it
- // 3 - takes a reference point in the second line in the
- // intersection between the normal to both lines passing
- // through the origin
- // 4 - finds a point whith has distance 'dist2' from this
- // reference, in the second line (point 2)
+ // 1 - finds a straight line parallel to the one passing through the origin and with angle 'phi' with X axis
+ // (phi in RADIANS);
+ // 2 - finds another line parallel to the previous one, with a distance 'dist1' from it
+ // 3 - takes a reference point in the second line in the intersection between the normal to both lines
+ // passing through the origin
+ // 4 - finds a point whith has distance 'dist2' from this reference, in the second line (point 2)
// ----
- // According to the signs given to dist1 and dist2, the point
- // is found in different position w.r. to the origin
-
+ // According to the signs given to dist1 and dist2, the point is found in different position w.r. to the origin
+ //
+
// compute the point
Double_t cs = TMath::Cos(phi);
Double_t sn = TMath::Sin(phi);
x = dist2*cs - dist1*sn;
y = dist1*cs + dist2*sn;
}
-//----------------------------------------------------------------------
-Bool_t AliITSv11GeometrySPD::Make2DcrossSections(TPolyLine &a0,TPolyLine &a1,
- TPolyLine &b0,TPolyLine &b1,TPolyMarker &p)const{
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::CreateFigure0(const Char_t *filepath,
+ const Char_t *type,
+ TGeoManager *mgr) const {
+ // Creates Figure 0 for the documentation of this class. In this
+ // specific case, it creates the X,Y cross section of the SPD suport
+ // section, center and ends. The output is written to a standard
+ // file name to the path specificed.
+ // Inputs:
+ // const Char_t *filepath Path where the figure is to be drawn
+ // const Char_t *type The type of file, default is gif.
+ // TGeoManager *mgr The TGeoManager default gGeoManager
+ // Output:
+ // none.
+ // Return:
+ // none.
+ TGeoXtru *sA0,*sA1,*sB0,*sB1;
+ //TPolyMarker *pmA,*pmB;
+ TPolyLine plA0,plA1,plB0,plB1;
+ TCanvas *canvas;
+ TLatex txt;
+ Double_t x=0.0,y=0.0;
+ Int_t i,kNRadii=6;
+
+ if(strcmp(filepath,"")){
+ Error("CreateFigure0","filepath=%s type=%s",filepath,type);
+ } // end if
+ //
+ sA0 = (TGeoXtru*) mgr->GetVolume(
+ "ITSSPDCarbonFiberSupportSectorA0_1")->GetShape();
+ sA1 = (TGeoXtru*) mgr->GetVolume(
+ "ITSSPDCarbonFiberSupportSectorAirA1_1")->GetShape();
+ sB0 = (TGeoXtru*) mgr->GetVolume(
+ "ITSSPDCarbonFiberSupportSectorEndB0_1")->GetShape();
+ sB1 = (TGeoXtru*) mgr->GetVolume(
+ "ITSSPDCarbonFiberSupportSectorEndAirB1_1")->GetShape();
+ //pmA = new TPolyMarker();
+ //pmA.SetMarkerStyle(2); // +
+ //pmA.SetMarkerColor(7); // light blue
+ //pmB = new TPolyMarker();
+ //pmB.SetMarkerStyle(5); // X
+ //pmB.SetMarkerColor(6); // purple
+ plA0.SetPolyLine(sA0->GetNvert());
+ plA0.SetLineColor(1); // black
+ plA0.SetLineStyle(1);
+ plA1.SetPolyLine(sA1->GetNvert());
+ plA1.SetLineColor(2); // red
+ plA1.SetLineStyle(1);
+ plB0.SetPolyLine(sB0->GetNvert());
+ plB0.SetLineColor(3); // Green
+ plB0.SetLineStyle(2);
+ plB1.SetPolyLine(sB1->GetNvert());
+ plB1.SetLineColor(4); // Blue
+ plB1.SetLineStyle(2);
+ //for(i=0;i<kNRadii;i++) pmA.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
+ //for(i=0;i<kNRadii;i++) pmB.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
+ for(i=0;i<sA0->GetNvert();i++) plA0.SetPoint(i,sA0->GetX(i),sA0->GetY(i));
+ for(i=0;i<sA1->GetNvert();i++) plA1.SetPoint(i,sA1->GetX(i),sA1->GetY(i));
+ for(i=0;i<sB0->GetNvert();i++) plB0.SetPoint(i,sB0->GetX(i),sB0->GetY(i));
+ for(i=0;i<sB1->GetNvert();i++) plB1.SetPoint(i,sB1->GetX(i),sB1->GetY(i));
+ canvas = new TCanvas("AliITSv11GeometrySPDFig0","",1000,1000);
+ canvas->Range(-3.,-3.,3.,3.);
+ txt.SetTextSize(0.05);
+ txt.SetTextAlign(33);
+ txt.SetTextColor(1);
+ txt.DrawLatex(2.9,2.9,"Section A-A outer Carbon Fiber surface");
+ txt.SetTextColor(2);
+ txt.DrawLatex(2.9,2.5,"Section A-A Inner Carbon Fiber surface");
+ txt.SetTextColor(3);
+ txt.DrawLatex(2.9,2.1,"Section E-E outer Carbon Fiber surface");
+ txt.SetTextColor(4);
+ txt.DrawLatex(2.9,1.7,"Section E-E Inner Carbon Fiber surface");
+ plA0.Draw();
+ plA1.Draw();
+ plB0.Draw();
+ plB1.Draw();
+ //pmA.Draw();
+ //pmB.Draw();
+ //
+ x = 1.0;
+ y = -2.5;
+ Char_t chr[3];
+ for(i=0;i<kNRadii;i++){
+ sprintf(chr,"%2d",i);txt.DrawLatex(x-0.1,y,chr);
+ sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x,y,chr);
+ sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+0.5,y,chr);
+ sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.0,y,chr);
+ sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.5,y,chr);
+ sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+2.0,y,chr);
+ if(kTRUE) txt.DrawLatex(x+2.5,y,"A-A/E-E");
+ else txt.DrawLatex(x+2.5,y,"E-E");
+ } // end for i
+ txt.DrawLatex(x,y,"x_{c} mm");
+ txt.DrawLatex(x+0.5,y,"y_{c} mm");
+ txt.DrawLatex(x+1.0,y,"R mm");
+ txt.DrawLatex(x+1.5,y,"#theta_{start}^{#circle}");
+ txt.DrawLatex(x+2.0,y,"#theta_{end}^{#circle}");
+ txt.DrawLatex(x+2.5,y,"Section");
+ //
+}
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::PrintAscii(ostream *os)const{
+ // Print out class data values in Ascii Form to output stream
+ // Inputs:
+ // ostream *os Output stream where Ascii data is to be writen
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+#if defined __GNUC__
+#if __GNUC__ > 2
+ ios::fmtflags fmt = cout.flags();
+#else
+ Int_t fmt;
+#endif
+#else
+#if defined __ICC || defined __ECC || defined __xlC__
+ ios::fmtflags fmt;
+#else
+ Int_t fmt;
+#endif
+#endif
+ os->flags(fmt); // reset back to old Formating.
+ return;
+}
+//
+//__________________________________________________________________________________________
+void AliITSv11GeometrySPD::ReadAscii(istream* /* is */){
+ // Read in class data values in Ascii Form to output stream
+ // Inputs:
+ // istream *is Input stream where Ascii data is to be read in from
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+}
+//
+//__________________________________________________________________________________________
+ostream &operator<<(ostream &os,const AliITSv11GeometrySPD &s){
+ // Standard output streaming function
+ // Inputs:
+ // ostream &os output steam
+ // AliITSvPPRasymmFMD &s class to be streamed.
+ // Output:
+ // none.
+ // Return:
+ // ostream &os The stream pointer
+
+ s.PrintAscii(&os);
+ return os;
+}
+//
+//__________________________________________________________________________________________
+istream &operator>>(istream &is,AliITSv11GeometrySPD &s){
+ // Standard inputput streaming function
+ // Inputs:
+ // istream &is input steam
+ // AliITSvPPRasymmFMD &s class to be streamed.
+ // Output:
+ // none.
+ // Return:
+ // ostream &os The stream pointer
+
+ s.ReadAscii(&is);
+ return is;
+}
+//
+//__________________________________________________________________________________________
+Bool_t AliITSv11GeometrySPD::Make2DCrossSections(TPolyLine &a0,TPolyLine &a1,
+ TPolyLine &b0,TPolyLine &b1,TPolyMarker &p)const{
// Fill the objects with the points representing
// a0 the outer carbon fiber SPD sector shape Cross Section A
// a1 the inner carbon fiber SPD sector shape Cross Section A
TGeoXtru *a0S,*a1S,*b0S,*b1S;
TGeoManager *mgr = gGeoManager;
- a0V = mgr->GetVolume(fSPDsectorShapeName.Data());
+ a0V = mgr->GetVolume("ITS SPD Carbon fiber support Sector A0");
a0S = dynamic_cast<TGeoXtru*>(a0V->GetShape());
n0 = a0S->GetNvert();
a0.SetPolyLine(n0+1);
// printf("%d %d %d\n",i,fSPDsectorPoints0[i],fSPDsectorPoints1[i]);
for(i=0;i<n0;i++){
x = a0S->GetX(i);
- y = a0S->GetY(i);
- //printf("%d %g %g\n",i,x,y);
+ y = a0S->GetY(i);
+ //printf("%d %g %g\n",i,x,y);
a0.SetPoint(i,x,y);
- if(i==0) a0.SetPoint(n0,x,y);
+ if(i==0) a0.SetPoint(n0,x,y);
} // end for i
a1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorAirA1");
a1S = dynamic_cast<TGeoXtru*>(a1V->GetShape());
a1.SetPolyLine(n1+1);
for(i=0;i<n1;i++){
x = a1S->GetX(i);
- y = a1S->GetY(i);
+ y = a1S->GetY(i);
a1.SetPoint(i,x,y);
- if(i==0) a1.SetPoint(n1,x,y);
+ if(i==0) a1.SetPoint(n1,x,y);
} // end for i
// Cross Section B
b0V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndB0");
b0.SetPolyLine(n0+1);
for(i=0;i<n0;i++){
x = b0S->GetX(i);
- y = b0S->GetY(i);
+ y = b0S->GetY(i);
b0.SetPoint(i,x,y);
- if(i==0) b0.SetPoint(n0,x,y);
+ if(i==0) b0.SetPoint(n0,x,y);
} // end for i
b1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndAirB1");
b1S = dynamic_cast<TGeoXtru*>(b1V->GetShape());
b1.SetPolyLine(n1+1);
for(i=0;i<n1;i++){
x = b1S->GetX(i);
- y = b1S->GetY(i);
+ y = b1S->GetY(i);
b1.SetPoint(i,x,y);
- if(i==0) b1.SetPoint(n1,x,y);
+ if(i==0) b1.SetPoint(n1,x,y);
} // end for i
//
Double_t x0,y0,x1,y1;
- p.SetPolyMarker(2*fSPDsectorPoints0.GetSize());
- for(i=0;i<fSPDsectorPoints0.GetSize();i++){
- GetSectorMountingPoints(i,x0,y0,x1,y1);
- p.SetPoint(2*i,x0,y0);
- p.SetPoint(2*i+1,x1,y1);
+ p.SetPolyMarker(2*fSPDsectorX0.GetSize());
+ for(i=0;i<fSPDsectorX0.GetSize();i++){
+ GetSectorMountingPoints(i,x0,y0,x1,y1);
+ p.SetPoint(2*i,x0,y0);
+ p.SetPoint(2*i+1,x1,y1);
} // end for i
return kTRUE;
}
-
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff