1 /**************************************************************************
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 // This class Defines the Geometry for the ITS services and support cones
17 // outside of the central volume (except for the Central support
18 // cylinders). Other classes define the rest of the ITS, specifically the
19 // SSD support cone, the SSD Support central cylinder, the SDD support cone,
20 // the SDD support central cylinder, the SPD Thermal Shield, The supports
21 // and cable trays on both the RB26 (muon dump) and RB24 sides, and all of
22 // the cabling from the ladders/stave ends out past the TPC.
24 // Here is the calling sequence associated with this file
25 // SPDSector(TGeoVolume *moth,TGeoManager *mgr)
26 // -----CarbonFiberSector(TGeoVolume *moth,Double_t &xAAtubeCenter0,
27 // Double_t &yAAtubeCenter0,TGeoManager *mgr)
28 // -----2* SPDsectorShape(Int_t n,const Double_t *xc,const Double_t *yc,
29 // | const Double_t *r,const Double_t *ths,
30 // | const Double_t *the,Int_t npr,Int_t &m,
31 // | Double_t **xp,Double_t **yp)
32 // -----StavesInSector(TGeoVolume *moth,TGeoManager *mgr)
33 // -----3* CreaeStave(Int_t layer,TArrayD &sizes,Bool_t addClips,
34 // | TGeoManager *mgr)
35 // | -----2* CreateHalfStave(Boot_t isRight,Int_t layer,
36 // | Int_t idxCentral,Int_t idxSide,
37 // | TArrayD &sizes,Bool_t addClips,
38 // | TGeoManager *mgr)
39 // | -----CreateGrondingFoil(Bool_t isRight,TArrayD &sizes,
40 // | | TGeoManager *mgr)
41 // | | -----4* CreateGroundingFoilSingle(Int_t type,
42 // | | TArrayD &sizes,
43 // | | TGeoManger *mgr)
44 // | |----CreateLadder(Int_t layer, TArrayD &sizes,
45 // | | TGeoManager *mgr)
46 // | |----CreateMCM(Bool_t isRight,TArrayD &sizes,
47 // | | TGeoManger *mgr)
48 // | |----CreatePixelBus(Bool_t isRight,TArrayD &sizes,
49 // | | TGeoManager *mgr)
50 // | -----CreateClip(TArrayD &sizes,TGeoManager *mgr)
51 // |----GetSectorMountingPoints(Int_t index,Double_t &x0,
52 // | Double_t &y0,Double_t &x1,
54 // -----3* ParallelPosition(Double_t dist1,Double_t dist2,
55 // Double_t phi,Double_t &x,Double_t &y)
57 // Obsoleate or presently unused routines are: setAddStave(Bool_t *mask),
58 // CreatePixelBusAndExtensions(...) which calles CreateExtender(...).
63 // General Root includes
64 #include <Riostream.h>
68 #include <TPolyLine.h>
69 #include <TPolyMarker.h>
71 // Root Geometry includes
72 #include <TGeoCompositeShape.h>
74 #include <TGeoGlobalMagField.h>
75 #include <TGeoMaterial.h>
76 #include <TGeoMatrix.h>
77 #include <TGeoMedium.h>
78 #include <TGeoTube.h> // contains TGeoTubeSeg
79 #include <TGeoVolume.h>
88 #include "AliITSv11GeometrySPD.h"
90 // Constant definistions
91 const Double_t AliITSv11GeometrySPD::fgkGapLadder =
92 AliITSv11Geometry::fgkmicron*75.; // 75 microns
93 const Double_t AliITSv11GeometrySPD::fgkGapHalfStave =
94 AliITSv11Geometry::fgkmicron*120.; // 120 microns
96 ClassImp(AliITSv11GeometrySPD)
97 //______________________________________________________________________
98 AliITSv11GeometrySPD::AliITSv11GeometrySPD(/*Double_t gap*/):
99 AliITSv11Geometry(),// Default constructor of base class
100 fAddStave(), // [DEBUG] must be TRUE for all staves which will be
101 // mounted in the sector (used to check overlaps)
102 fSPDsectorX0(0), // X of first edge of sector plane for stave
103 fSPDsectorY0(0), // Y of first edge of sector plane for stave
104 fSPDsectorX1(0), // X of second edge of sector plane for stave
105 fSPDsectorY1(0), // Y of second edge of sector plane for stave
106 fTubeEndSector() // coordinate of cooling tube ends
109 // Default constructor.
110 // This does not initialize anything and is provided just for
111 // completeness. It is recommended to use the other one.
112 // The alignment gap is specified as argument (default = 0.0075 cm).
118 // A default constructed AliITSv11GeometrySPD class.
122 for (i = 0; i < 6; i++) fAddStave[i] = kTRUE;
123 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++){
124 this->fTubeEndSector[k][0][i][j] = 0.0;
125 this->fTubeEndSector[k][1][i][j] = 0.0;
128 //______________________________________________________________________
129 AliITSv11GeometrySPD::AliITSv11GeometrySPD(Int_t debug/*, Double_t gap*/):
130 AliITSv11Geometry(debug),// Default constructor of base class
131 fAddStave(), // [DEBUG] must be TRUE for all staves which will be
132 // mounted in the sector (used to check overlaps)
133 fSPDsectorX0(0), // X of first edge of sector plane for stave
134 fSPDsectorY0(0), // Y of first edge of sector plane for stave
135 fSPDsectorX1(0), // X of second edge of sector plane for stave
136 fSPDsectorY1(0), // Y of second edge of sector plane for stave
137 fTubeEndSector() // coordinate of cooling tube ends
140 // Constructor with debug setting argument
141 // This is the constructor which is recommended to be used.
142 // It sets a debug level, and initializes the name of the object.
143 // The alignment gap is specified as argument (default = 0.0075 cm).
145 // Int_t debug Debug level, 0= no debug output.
149 // A default constructed AliITSv11GeometrySPD class.
153 for (i = 0; i < 6; i++) fAddStave[i] = kTRUE;
154 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++){
155 this->fTubeEndSector[k][0][i][j] = 0.0;
156 this->fTubeEndSector[k][1][i][j] = 0.0;
159 //______________________________________________________________________
160 AliITSv11GeometrySPD::AliITSv11GeometrySPD(const AliITSv11GeometrySPD &s):
161 AliITSv11Geometry(s),// Base Class Copy constructor
162 fAddStave(), // [DEBUG] must be TRUE for all staves which will be
163 // mounted in the sector (used to check overlaps)
164 fSPDsectorX0(s.fSPDsectorX0), // X of first edge of sector plane for stave
165 fSPDsectorY0(s.fSPDsectorY0), // Y of first edge of sector plane for stave
166 fSPDsectorX1(s.fSPDsectorX1), // X of second edge of sector plane for stave
167 fSPDsectorY1(s.fSPDsectorY1) // Y of second edge of sector plane for stave
172 // AliITSv11GeometrySPD &s source class
176 // A copy of a AliITSv11GeometrySPD class.
180 for (i = 0; i < 6; i++) this->fAddStave[i] = s.fAddStave[i];
181 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++){
182 this->fTubeEndSector[k][0][i][j] = s.fTubeEndSector[k][0][i][j];
183 this->fTubeEndSector[k][1][i][j] = s.fTubeEndSector[k][1][i][j];
186 //______________________________________________________________________
187 AliITSv11GeometrySPD& AliITSv11GeometrySPD::operator=(const
188 AliITSv11GeometrySPD &s)
193 // AliITSv11GeometrySPD &s source class
197 // A copy of a AliITSv11GeometrySPD class.
201 if(this==&s) return *this;
202 for (i = 0; i < 6; i++) this->fAddStave[i] = s.fAddStave[i];
203 this->fSPDsectorX0=s.fSPDsectorX0;
204 this->fSPDsectorY0=s.fSPDsectorY0;
205 this->fSPDsectorX1=s.fSPDsectorX1;
206 this->fSPDsectorY1=s.fSPDsectorY1;
207 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++){
208 this->fTubeEndSector[k][0][i][j] = s.fTubeEndSector[k][0][i][j];
209 this->fTubeEndSector[k][1][i][j] = s.fTubeEndSector[k][1][i][j];
213 //______________________________________________________________________
214 TGeoMedium* AliITSv11GeometrySPD::GetMedium(const char* mediumName,
215 TGeoManager *mgr) const
218 // This function is used to recovery any medium
219 // used to build the geometry volumes.
220 // If the required medium does not exists,
221 // a NULL pointer is returned, and an error message is written.
223 Char_t itsMediumName[30];
225 sprintf(itsMediumName, "ITS_%s", mediumName);
226 TGeoMedium* medium = mgr->GetMedium(itsMediumName);
227 if (!medium) AliError(Form("Medium <%s> not found", mediumName));
231 //______________________________________________________________________
232 Int_t AliITSv11GeometrySPD::CreateSPDCentralMaterials(Int_t &medOffset,
233 Int_t &matOffset) const
236 // Define the specific materials used for the ITS SPD central detectors.
238 // NOTE: These are the same old names.
239 // By the ALICE naming conventions, they start with "ITS SPD ...."
240 // Data taken from ** AliITSvPPRasymmFMD::CreateMaterials() **.
242 // Arguments [the ones passed by reference contain output values]:
243 // - medOffset --> (by ref) starting number of the list of media
244 // - matOffset --> (by ref) starting number of the list of Materials
247 // Int_t &medOffset Starting number of the list of media
248 // Int_t &matOffset Starting number of the list of materials
250 // Int_t &medOffset Ending number of the list of media
251 // Int_t &matOffset Ending number of the list of materials
253 // The last material indexused +1. (= next avaiable material index)
255 const Double_t ktmaxfd = 0.1 * fgkDegree; // Degree
256 const Double_t kstemax = 1.0 * fgkcm; // cm
257 const Double_t kdeemax = 0.1;//Fraction of particle's energy 0<deemax<=1
258 const Double_t kepsil = 1.0E-4; //
259 const Double_t kstmin = 0.0 * fgkcm; // cm "Default value used"
260 const Double_t ktmaxfdAir = 0.1 * fgkDegree; // Degree
261 const Double_t kstemaxAir = 1.0000E+00 * fgkcm; // cm
262 const Double_t kdeemaxAir = 0.1;//Fraction of particle's energy 0<deemax<=1
263 const Double_t kepsilAir = 1.0E-4;//
264 const Double_t kstminAir = 0.0 * fgkcm; // cm "Default value used"
265 const Double_t ktmaxfdSi = 0.1 * fgkDegree; // .10000E+01; // Degree
266 const Double_t kstemaxSi = 0.0075 * fgkcm; // .10000E+01; // cm
267 const Double_t kdeemaxSi = 0.1;//Fraction of particle's energy 0<deemax<=1
268 const Double_t kepsilSi = 1.0E-4;//
269 const Double_t kstminSi = 0.0 * fgkcm; // cm "Default value used"
271 Int_t matindex = matOffset;
272 Int_t medindex = medOffset;
277 Int_t ifield = (((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ());
278 Double_t fieldm = (((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max());
279 Double_t params[8] = {8 * 0.0};
281 params[1] = (Double_t) ifield;
283 params[3] = ktmaxfdSi;
284 params[4] = kstemaxSi;
285 params[5] = kdeemaxSi;
286 params[6] = kepsilSi;
287 params[7] = kstminSi;
289 // Definition of materials and mediums.
290 // Last argument in material definition is its pressure,
291 // which is initialized to ZERO.
292 // For better readability, it is simply set to zero.
293 // Then the writing "0.0 * fgkPascal" is replaced by "0."
296 // silicon definition for ITS (overall)
297 mat = new TGeoMaterial("ITS_SI", 28.086, 14.0, 2.33 * fgkgcm3,
298 TGeoMaterial::kMatStateSolid, 25.0*fgkCelsius, 0.);
299 mat->SetIndex(matindex);
300 med = new TGeoMedium("SI", medindex++, mat, params);
302 // silicon for ladder chips
303 mat = new TGeoMaterial("SPD SI CHIP", 28.086, 14.0, 2.33 * fgkgcm3,
304 TGeoMaterial::kMatStateSolid, 25.0*fgkCelsius, 0.);
305 mat->SetIndex(matindex);
306 med = new TGeoMedium("SPD SI CHIP", medindex++, mat, params);
308 // silicon for pixel bus
309 mat = new TGeoMaterial("SPD SI BUS", 28.086, 14.0, 2.33 * fgkgcm3,
310 TGeoMaterial::kMatStateSolid, 25.0*fgkCelsius, 0.);
311 mat->SetIndex(matindex);
312 med = new TGeoMedium("SPD SI BUS", medindex++, mat, params);
314 // carbon fiber material is defined as a mix of C-O-N-H
315 // defined in terms of fractional weights according to 'C (M55J)'
316 // it is used for the support and clips
317 mix = new TGeoMixture("C (M55J)", 4, 1.9866 * fgkgcm3);
318 mix->SetIndex(matindex);
319 mix->DefineElement(0, 12.01070, 6.0, 0.908508078);// C by fractional weight
320 mix->DefineElement(1, 14.00670, 7.0, 0.010387573);// N by fractional weight
321 mix->DefineElement(2, 15.99940, 8.0, 0.055957585);// O by fractional weight
322 mix->DefineElement(3, 1.00794, 1.0, 0.025146765);// H by fractional weight
323 mix->SetPressure(0.0 * fgkPascal);
324 mix->SetTemperature(25.0 * fgkCelsius);
325 mix->SetState(TGeoMaterial::kMatStateSolid);
331 med = new TGeoMedium("ITSspdCarbonFiber", medindex++, mix, params);
333 // air defined as a mixture of C-N-O-Ar:
334 // it is used to fill all containers
335 mix = new TGeoMixture("Air", 4, 1.20479E-3 * fgkgcm3);
336 mix->SetIndex(matindex);
337 mix->DefineElement(0, 12.0107, 6.0, 0.000124); // C by fractional weight
338 mix->DefineElement(1, 14.0067, 7.0, 0.755267); // N by fractional weight
339 mix->DefineElement(2, 15.9994, 8.0, 0.231781); // O by fractional weight
340 mix->DefineElement(3, 39.9480, 18.0, 0.012827); // Ar by fractional weight
341 mix->SetPressure(101325.0 * fgkPascal); // = 1 atmosphere
342 mix->SetTemperature(25.0 * fgkCelsius);
343 mix->SetState(TGeoMaterial::kMatStateGas);
344 params[3] = ktmaxfdAir;
345 params[4] = kstemaxAir;
346 params[5] = kdeemaxAir;
347 params[6] = kepsilAir;
348 params[7] = kstminAir;
349 med = new TGeoMedium("ITSspdAir", medindex++, mix, params);
351 // inox stainless steel, defined as a mixture
352 // used for all metallic parts
353 mix = new TGeoMixture("INOX", 9, 8.03 * fgkgcm3);
354 mix->SetIndex(matindex);
355 mix->DefineElement(0, 12.0107, 6., .0003); // C by fractional weight
356 mix->DefineElement(1, 54.9380, 25., .02); // Fe by fractional weight
357 mix->DefineElement(2, 28.0855, 14., .01); // Na by fractional weight
358 mix->DefineElement(3, 30.9738, 15., .00045); // P by fractional weight
359 mix->DefineElement(4, 32.066 , 16., .0003); // S by fractional weight
360 mix->DefineElement(5, 58.6928, 28., .12); // Ni by fractional weight
361 mix->DefineElement(6, 55.9961, 24., .17); // by fractional weight
362 mix->DefineElement(7, 95.84 , 42., .025); // by fractional weight
363 mix->DefineElement(8, 55.845 , 26., .654); // by fractional weight
364 mix->SetPressure(0.0 * fgkPascal);
365 mix->SetTemperature(25.0 * fgkCelsius);
366 mix->SetState(TGeoMaterial::kMatStateSolid);
367 params[3] = ktmaxfdAir;
368 params[4] = kstemaxAir;
369 params[5] = kdeemaxAir;
370 params[6] = kepsilAir;
371 params[7] = kstminAir;
372 med = new TGeoMedium("ITSspdStainlessSteel", medindex++, mix, params);
374 // freon gas which fills the cooling system (C+F)
375 mix = new TGeoMixture("Freon", 2, 1.63 * fgkgcm3);
376 mix->SetIndex(matindex);
377 mix->DefineElement(0, 12.0107 , 6.0, 4); // C by fractional weight
378 mix->DefineElement(1, 18.9984032, 9.0, 10); // F by fractional weight
379 mix->SetPressure(101325.0 * fgkPascal); // = 1 atmosphere
380 mix->SetTemperature(25.0 * fgkCelsius);
381 mix->SetState(TGeoMaterial::kMatStateLiquid);
382 params[3] = ktmaxfdAir;
383 params[4] = kstemaxAir;
384 params[5] = kdeemaxAir;
385 params[6] = kepsilAir;
386 params[7] = kstminAir;
387 med = new TGeoMedium("ITSspdCoolingFluid", medindex++, mix, params);
389 // return the next index to be used in case of adding new materials
390 medOffset = medindex;
391 matOffset = matindex;
394 //______________________________________________________________________
395 void AliITSv11GeometrySPD::InitSPDCentral(Int_t offset, TVirtualMC *vmc) const
398 // Do all SPD Central detector initializations (e.g.: transport cuts).
400 // Here follow some GEANT3 physics switches, which are interesting
401 // for these settings to be defined:
402 // - "MULTS" (MULtiple Scattering):
403 // the variable IMULS controls this process. See [PHYS320/325/328]
404 // 0 - No multiple scattering.
405 // 1 - (DEFAULT) Multiple scattering according to Moliere theory.
406 // 2 - Same as 1. Kept for backward compatibility.
407 // 3 - Pure Gaussian scattering according to the Rossi formula.
408 // - "DRAY" (Delta RAY production)
409 // The variable IDRAY controls this process. See [PHYS430]
410 // 0 - No delta rays production.
411 // 1 - (DEFAULT) Delta rays production with generation of.
412 // 2 - Delta rays production without generation of.
413 // - "LOSS" (continuous energy loss)
414 // The variable ILOSS controls this process.
415 // 0 - No continuous energy loss, IDRAY is set to 0.
416 // 1 - Continuous energy loss with generation of delta rays above
417 // DCUTE (common/GCUTS/) and restricted Landau fluctuations
419 // 2 - (DEFAULT) Continuous energy loss without generation of
421 // and full Landau-Vavilov-Gauss fluctuations.
422 // In this case the variable IDRAY is forced to 0 to avoid
423 // double counting of fluctuations.
424 // 3 - Same as 1, kept for backward compatibility.
425 // 4 - Energy loss without fluctuation.
426 // The value obtained from the tables is used directly.
429 // Int_t offset --> the material/medium index offset
430 // TVirtualMC *vmc --> pointer to the virtual Monte Carlo default gMC
436 vmc->Gstpar(i+offset, "CUTGAM", 30.0 * fgkKeV);
437 vmc->Gstpar(i+offset, "CUTELE", 30.0 * fgkKeV);
438 vmc->Gstpar(i+offset, "CUTNEU", 30.0 * fgkKeV);
439 vmc->Gstpar(i+offset, "CUTHAD", 30.0 * fgkKeV);
440 vmc->Gstpar(i+offset, "CUTMUO", 30.0 * fgkKeV);
441 vmc->Gstpar(i+offset, "BCUTE", 30.0 * fgkKeV);
442 vmc->Gstpar(i+offset, "BCUTM", 30.0 * fgkKeV);
443 vmc->Gstpar(i+offset, "DCUTE", 30.0 * fgkKeV);
444 vmc->Gstpar(i+offset, "DCUTM", 30.0 * fgkKeV);
445 //vmc->Gstpar(i+offset, "PPCUTM", );
446 //vmc->Gstpar(i+offset, "PAIR", );
447 //vmc->Gstpar(i+offset, "COMPT", );
448 //vmc->Gstpar(i+offset, "PHOT", );
449 //vmc->Gstpar(i+offset, "PFIS", );
450 vmc->Gstpar(i+offset, "DRAY", 1);
451 //vmc->Gstpar(i+offset, "ANNI", );
452 //vmc->Gstpar(i+offset, "BREM", );
453 //vmc->Gstpar(i+offset, "HADR", );
454 //vmc->Gstpar(i+offset, "MUNU", );
455 //vmc->Gstpar(i+offset, "DCAY", );
456 vmc->Gstpar(i+offset, "LOSS", 1);
457 //vmc->Gstpar(i+offset, "MULS", );
458 //vmc->Gstpar(i+offset, "GHCOR1", );
459 //vmc->Gstpar(i+offset, "BIRK1", );
460 //vmc->Gstpar(i+offset, "BRIK2", );
461 //vmc->Gstpar(i+offset, "BRIK3", );
462 //vmc->Gstpar(i+offset, "LABS", );
463 //vmc->Gstpar(i+offset, "SYNC", );
464 //vmc->Gstpar(i+offset, "STRA", );
467 //______________________________________________________________________
468 void AliITSv11GeometrySPD::SPDSector(TGeoVolume *moth, TGeoManager *mgr)
471 // Creates a single SPD carbon fiber sector and places it
472 // in a container volume passed as first argument ('moth').
473 // Second argument points to the TGeoManager which coordinates
474 // the overall volume creation.
475 // The position of the sector is based on distance of
476 // closest point of SPD stave to beam pipe
477 // (figures all-sections-modules.ps) of 7.22mm at section A-A.
482 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
483 title="SPD Sector drawing with all cross sections defined">
484 <p>The SPD Sector definition. In
485 <a href="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.hpgl">HPGL</a> format.
486 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly-10-modules.ps"
487 titile="SPD All Sectors end view with thermal sheald">
488 <p>The SPD all sector end view with thermal sheald.
489 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
490 title="SPD side view cross section">
491 <p>SPD side view cross section with condes and thermal shealds.
492 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-A_A.jpg"
493 title="Cross section A-A"><p>Cross section A-A.
494 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-B_B.jpg"
495 title="Cross updated section A-A"><p>Cross updated section A-A.
496 <img src="http://physics.mps.ohio-state.edu/~nilsen/ITSfigures/Sezione_layerAA.pdf"
497 title="Cross section B-B"><p>Cross section B-B.
498 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-C_C.jpg"
499 title-"Cross section C-C"><p>Cross section C-C.
500 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-D_D.jpg"
501 title="Cross section D-D"><p>Cross section D-D.
502 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-E_E.jpg"
503 title="Cross section E-E"><p>Cross section E-E.
504 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-F_F.jpg"
505 title="Cross section F-F"><p>Cross section F-F.
506 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-G_G.jpg"
507 title="Cross section G-G"><p>Cross section G-G.
512 // TGeoVolume *moth Pointer to mother volume where this object
513 // is to be placed in
514 // TGeoManager *mgr Pointer to the TGeoManager used, defaule is
520 // Updated values for kSPDclossesStaveAA, kBeamPipeRadius, and
521 // staveThicknessAA are taken from
522 // http://physics.mps.ohio-state.edu/~nilsen/ITSfigures/Sezione_layerAA.pdf
524 const Double_t kSPDclossesStaveAA = 7.25* fgkmm;
525 const Double_t kSectorStartingAngle = -72.0 * fgkDegree;
526 const Int_t kNSectorsTotal = 10;
527 const Double_t kSectorRelativeAngle = 36.0 * fgkDegree; // = 360.0 / 10
528 const Double_t kBeamPipeRadius = 0.5 * 59.6 * fgkmm; // diam. = 59.6 mm
529 //const Double_t staveThicknessAA = 0.9 *fgkmm; // nominal thickness
530 const Double_t staveThicknessAA = 1.02 * fgkmm; // get from stave geometry.
533 Double_t angle, radiusSector, xAAtubeCenter0, yAAtubeCenter0;
534 TGeoCombiTrans *secRot = new TGeoCombiTrans(), *comrot;
535 TGeoVolume *vCarbonFiberSector;
536 TGeoMedium *medSPDcf;
538 // Define an assembly and fill it with the support of
539 // a single carbon fiber sector and staves in it
540 medSPDcf = GetMedium("SPD C (M55J)$", mgr);
541 vCarbonFiberSector = new TGeoVolumeAssembly("ITSSPDCarbonFiberSectorV");
542 vCarbonFiberSector->SetMedium(medSPDcf);
543 CarbonFiberSector(vCarbonFiberSector, xAAtubeCenter0, yAAtubeCenter0, mgr);
545 // Compute the radial shift out of the sectors
546 radiusSector = kBeamPipeRadius + kSPDclossesStaveAA + staveThicknessAA;
547 radiusSector = GetSPDSectorTranslation(fSPDsectorX0.At(1), fSPDsectorY0.At(1),
548 fSPDsectorX1.At(1), fSPDsectorY1.At(1), radiusSector);
549 //radiusSector *= radiusSector; // squaring;
550 //radiusSector -= xAAtubeCenter0 * xAAtubeCenter0;
551 //radiusSector = -yAAtubeCenter0 + TMath::Sqrt(radiusSector);
553 AliDebug(1, Form("SPDSector : radiusSector=%f\n",radiusSector));
555 AliDebug(1, Form("i= %d x0=%f y0=%f x1=%f y1=%f\n", i,
556 fSPDsectorX0.At(i), fSPDsectorY0.At(i),
557 fSPDsectorX1.At(i),fSPDsectorY1.At(i)));
559 // add 10 single sectors, by replicating the virtual sector defined above
560 // and placing at different angles
561 Double_t shiftX, shiftY, tub[2][6][3];
562 for(i=0;i<2;i++)for(j=0;j<6;j++)for(k=0;k<3;k++) tub[i][j][k] = fTubeEndSector[0][i][j][k];
563 angle = kSectorStartingAngle;
564 secRot->RotateZ(angle);
565 TGeoVolumeAssembly *vcenteral = new TGeoVolumeAssembly("ITSSPD");
566 moth->AddNode(vcenteral, 1, 0);
567 for(i = 0; i < kNSectorsTotal; i++) {
568 shiftX = -radiusSector * TMath::Sin(angle/fgkRadian);
569 shiftY = radiusSector * TMath::Cos(angle/fgkRadian);
570 //cout << "ANGLE = " << angle << endl;
571 shiftX += 0.1094 * TMath::Cos((angle + 196.)/fgkRadian);
572 shiftY += 0.1094 * TMath::Sin((angle + 196.)/fgkRadian);
575 //shiftX -= 0.11 * TMath::Cos(angle/fgkRadian); // add by Alberto
576 //shiftY -= 0.11 * TMath::Sin(angle/fgkRadian); // don't ask me where that 0.11 comes from!
577 secRot->SetDx(shiftX);
578 secRot->SetDy(shiftY);
579 comrot = new TGeoCombiTrans(*secRot);
580 vcenteral->AddNode(vCarbonFiberSector,i+1,comrot);
581 for(j=0;j<2;j++)for(k=0;k<6;k++) // Transform Tube ends for each sector
582 comrot->LocalToMaster(tub[j][k],fTubeEndSector[i][j][k]);
584 AliInfo(Form("i=%d angle=%g angle[rad]=%g radiusSector=%g "
585 "x=%g y=%g \n",i, angle, angle/fgkRadian,
586 radiusSector, shiftX, shiftY));
587 } // end if GetDebug(5)
588 angle += kSectorRelativeAngle;
589 secRot->RotateZ(kSectorRelativeAngle);
591 if(GetDebug(3)) moth->PrintNodes();
596 //______________________________________________________________________
597 void AliITSv11GeometrySPD::CarbonFiberSector(TGeoVolume *moth,
598 Double_t &xAAtubeCenter0, Double_t &yAAtubeCenter0, TGeoManager *mgr)
601 // Define the detail SPD Carbon fiber support Sector geometry.
602 // Based on the drawings:
604 http:///QA-construzione-profilo-modulo.ps
606 // - ALICE-Pixel "Costruzione Profilo Modulo" (march 25 2004)
607 // - ALICE-SUPPORTO "Costruzione Profilo Modulo"
609 // Define outside radii as negative, where "outside" means that the
610 // center of the arc is outside of the object (feb 16 2004).
612 // Arguments [the one passed by ref contain output values]:
614 // TGeoVolume *moth the voulme which will contain this object
615 // TGeoManager *mgr TGeo builder defauls is gGeoManager
617 // Double_t &xAAtubeCenter0 (by ref) x location of the outer surface
618 // of the cooling tube center for tube 0.
619 // Double_t &yAAtubeCenter0 (by ref) y location of the outer surface
620 // of the cooling tube center for tube 0.
624 // Int the two variables passed by reference values will be stored
625 // which will then be used to correctly locate this sector.
626 // The information used for this is the distance between the
627 // center of the #0 detector and the beam pipe.
628 // Measurements are taken at cross section A-A.
631 //TGeoMedium *medSPDfs = 0;//SPD support cone inserto stesalite 4411w
632 //TGeoMedium *medSPDfo = 0;//SPD support cone foam, Rohacell 50A.
633 //TGeoMedium *medSPDal = 0;//SPD support cone SDD mounting bracket Al
634 TGeoMedium *medSPDcf = GetMedium("SPD C (M55J)$", mgr);
635 TGeoMedium *medSPDss = GetMedium("INOX$", mgr);
636 TGeoMedium *medSPDair = GetMedium("AIR$", mgr);
637 TGeoMedium *medSPDcoolfl = GetMedium("Freon$", mgr); //ITSspdCoolingFluid
639 const Double_t ksecDz = 0.5 * 500.0 * fgkmm;
640 //const Double_t ksecLen = 30.0 * fgkmm;
641 const Double_t ksecCthick = 0.2 * fgkmm;
642 const Double_t ksecDipLength = 3.2 * fgkmm;
643 const Double_t ksecDipRadii = 0.4 * fgkmm;
644 //const Double_t ksecCoolingTubeExtraDepth = 0.86 * fgkmm;
646 // The following positions ('ksecX#' and 'ksecY#') and radii ('ksecR#')
647 // are the centers and radii of curvature of all the rounded corners
648 // between the straight borders of the SPD sector shape.
649 // To draw this SPD sector, the following steps are followed:
650 // 1) the (ksecX, ksecY) points are plotted
651 // and circles of the specified radii are drawn around them.
652 // 2) each pair of consecutive circles is connected by a line
653 // tangent to them, in accordance with the radii being "internal"
654 // or "external" with respect to the closed shape which describes
655 // the sector itself.
656 // The resulting connected shape is the section
657 // of the SPD sector surface in the transverse plane (XY).
659 const Double_t ksecX0 = -10.725 * fgkmm;
660 const Double_t ksecY0 = -14.853 * fgkmm;
661 const Double_t ksecR0 = -0.8 * fgkmm; // external
662 const Double_t ksecX1 = -13.187 * fgkmm;
663 const Double_t ksecY1 = -19.964 * fgkmm;
664 const Double_t ksecR1 = +0.6 * fgkmm; // internal // (modif. by Alberto)
665 //const Double_t ksecR1 = +0.8 * fgkmm; // internal // (modif. by Alberto)
667 // const Double_t ksecDip0 = 5.9 * fgkmm;
669 //const Double_t ksecX2 = -3.883 * fgkmm;
670 const Double_t ksecX2 = -3.833 * fgkmm; // (corr. by Alberto)
671 const Double_t ksecY2 = -17.805 * fgkmm;
672 const Double_t ksecR2 = +0.6 * fgkmm; // internal (guess)
673 const Double_t ksecX3 = -3.123 * fgkmm;
674 const Double_t ksecY3 = -14.618 * fgkmm;
675 const Double_t ksecR3 = -0.6 * fgkmm; // external
676 //const Double_t ksecDip1 = 8.035 * fgkmm;
678 const Double_t ksecX4 = +11.280 * fgkmm;
679 const Double_t ksecY4 = -14.473 * fgkmm;
680 const Double_t ksecR4 = +0.8 * fgkmm; // internal
681 const Double_t ksecX5 = +19.544 * fgkmm;
682 const Double_t ksecY5 = +10.961 * fgkmm;
683 const Double_t ksecR5 = +0.8 * fgkmm; // internal
684 //const Double_t ksecDip2 = 4.553 * fgkmm;
686 const Double_t ksecX6 = +10.830 * fgkmm;
687 const Double_t ksecY6 = +16.858 * fgkmm;
688 const Double_t ksecR6 = +0.6 * fgkmm; // internal
689 const Double_t ksecX7 = +11.581 * fgkmm;
690 const Double_t ksecY7 = +13.317 * fgkmm;
691 const Double_t ksecR7 = -0.6 * fgkmm; // external
692 //const Double_t ksecDip3 = 6.978 * fgkmm;
694 const Double_t ksecX8 = -0.733 * fgkmm;
695 const Double_t ksecY8 = +17.486 * fgkmm;
696 const Double_t ksecR8 = +0.6 * fgkmm; // internal
697 const Double_t ksecX9 = +0.562 * fgkmm;
698 //const Double_t ksecY9 = +14.486 * fgkmm; // correction by
699 const Double_t ksecY9 = +14.107 * fgkmm; // Alberto
700 const Double_t ksecR9 = -0.6 * fgkmm; // external
701 //const Double_t ksecDip4 = 6.978 * fgkmm;
703 const Double_t ksecX10 = -12.252 * fgkmm;
704 const Double_t ksecY10 = +16.298 * fgkmm;
705 const Double_t ksecR10 = +0.6 * fgkmm; // internal
706 const Double_t ksecX11 = -10.445 * fgkmm;
707 const Double_t ksecY11 = +13.162 * fgkmm;
708 const Double_t ksecR11 = -0.6 * fgkmm; // external
709 //const Double_t ksecDip5 = 6.978 * fgkmm;
711 const Double_t ksecX12 = -22.276 * fgkmm;
712 const Double_t ksecY12 = +12.948 * fgkmm;
713 const Double_t ksecR12 = +0.85 * fgkmm; // internal
714 const Double_t ksecR13 = -0.8 * fgkmm; // external
715 const Double_t ksecAngleSide13 = 36.0 * fgkDegree;
717 const Int_t ksecNRadii = 20;
718 const Int_t ksecNPointsPerRadii = 4;
719 const Int_t ksecNCoolingTubeDips = 6;
721 // Since the rounded parts are approximated by a regular polygon
722 // and a cooling tube of the propper diameter must fit, a scaling factor
723 // increases the size of the polygon for the tube to fit.
724 //const Double_t ksecRCoolScale = 1./TMath::Cos(TMath::Pi()/
725 // (Double_t)ksecNPointsPerRadii);
726 const Double_t ksecZEndLen = 30.000 * fgkmm;
727 //const Double_t ksecZFlangLen = 45.000 * fgkmm;
728 const Double_t ksecTl = 0.860 * fgkmm;
729 const Double_t ksecCthick2 = 0.600 * fgkmm;
730 //const Double_t ksecCthick3 = 1.80 * fgkmm;
731 //const Double_t ksecSidelen = 22.0 * fgkmm;
732 //const Double_t ksecSideD5 = 3.679 * fgkmm;
733 //const Double_t ksecSideD12 = 7.066 * fgkmm;
734 const Double_t ksecRCoolOut = 2.400 * fgkmm;
735 const Double_t ksecRCoolIn = 2.000 * fgkmm;
736 const Double_t ksecDl1 = 5.900 * fgkmm;
737 const Double_t ksecDl2 = 8.035 * fgkmm;
738 const Double_t ksecDl3 = 4.553 * fgkmm;
739 const Double_t ksecDl4 = 6.978 * fgkmm;
740 const Double_t ksecDl5 = 6.978 * fgkmm;
741 const Double_t ksecDl6 = 6.978 * fgkmm;
742 const Double_t ksecCoolTubeThick = 0.04 * fgkmm;
743 const Double_t ksecCoolTubeROuter = 2.6 * fgkmm;
744 const Double_t ksecCoolTubeFlatX = 3.696 * fgkmm;
745 const Double_t ksecCoolTubeFlatY = 0.68 * fgkmm;
746 //const Double_t ksecBeamX0 = 0.0 * fgkmm; // guess
747 //const Double_t ksecBeamY0 = (15.223 + 40.) * fgkmm; // guess
749 // redefine some of the points already defined above
750 // in the format of arrays (???)
751 const Int_t ksecNPoints = (ksecNPointsPerRadii + 1) * ksecNRadii + 8;
752 Double_t secX[ksecNRadii] = {
753 ksecX0, ksecX1, -1000.0,
754 ksecX2, ksecX3, -1000.0,
755 ksecX4, ksecX5, -1000.0,
756 ksecX6, ksecX7, -1000.0,
757 ksecX8, ksecX9, -1000.0,
758 ksecX10, ksecX11, -1000.0,
761 Double_t secY[ksecNRadii] = {
762 ksecY0, ksecY1, -1000.0,
763 ksecY2, ksecY3, -1000.0,
764 ksecY4, ksecY5, -1000.0,
765 ksecY6, ksecY7, -1000.0,
766 ksecY8, ksecY9, -1000.0,
767 ksecY10, ksecY11, -1000.0,
770 Double_t secR[ksecNRadii] = {
771 ksecR0, ksecR1, -.5 * ksecDipLength - ksecDipRadii,
772 ksecR2, ksecR3, -.5 * ksecDipLength - ksecDipRadii,
773 ksecR4, ksecR5, -.5 * ksecDipLength - ksecDipRadii,
774 ksecR6, ksecR7, -.5 * ksecDipLength - ksecDipRadii,
775 ksecR8, ksecR9, -.5 * ksecDipLength - ksecDipRadii,
776 ksecR10, ksecR11, -.5 * ksecDipLength - ksecDipRadii,
780 Double_t secDip[ksecNRadii] = {
781 0., 0., ksecDip0, 0., 0., ksecDip1,
782 0., 0., ksecDip2, 0., 0., ksecDip3,
783 0., 0., ksecDip4, 0., 0., ksecDip5,
787 Double_t secX2[ksecNRadii];
788 Double_t secY2[ksecNRadii];
789 Double_t secR2[ksecNRadii] = {
790 ksecR0, ksecR1, ksecRCoolOut,
791 ksecR2, ksecR3, ksecRCoolOut,
792 ksecR4, ksecR5, ksecRCoolOut,
793 ksecR6, ksecR7, ksecRCoolOut,
794 ksecR8, ksecR9, ksecRCoolOut,
795 ksecR10, ksecR11, ksecRCoolOut,
798 Double_t secDip2[ksecNCoolingTubeDips] = {
799 ksecDl1, ksecDl2, ksecDl3,
800 ksecDl4, ksecDl5, ksecDl6
802 Double_t secX3[ksecNRadii];
803 Double_t secY3[ksecNRadii];
804 const Int_t ksecDipIndex[ksecNCoolingTubeDips] = {2, 5, 8, 11, 14, 17};
805 Double_t secAngleStart[ksecNRadii];
806 Double_t secAngleEnd[ksecNRadii];
807 Double_t secAngleStart2[ksecNRadii];
808 Double_t secAngleEnd2[ksecNRadii];
809 Double_t secAngleTurbo[ksecNCoolingTubeDips] = {0., 0., 0., 0., 0., 0.0};
810 //Double_t secAngleStart3[ksecNRadii];
811 //Double_t secAngleEnd3[ksecNRadii];
812 Double_t xpp[ksecNPoints], ypp[ksecNPoints];
813 Double_t xpp2[ksecNPoints], ypp2[ksecNPoints];
814 Double_t *xp[ksecNRadii], *xp2[ksecNRadii];
815 Double_t *yp[ksecNRadii], *yp2[ksecNRadii];
816 TGeoXtru *sA0, *sA1, *sB0, *sB1,*sB2;
818 TGeoEltu *sTA0, *sTA1;
819 TGeoTube *sTB0, *sTB1; //,*sM0;
821 TGeoTranslation *trans;
822 TGeoCombiTrans *rotrans;
823 Double_t t, t0, t1, a, b, x0, y0,z0, x1, y1;
828 AliError("Container volume (argument) is NULL");
831 for(i = 0; i < ksecNRadii; i++) {
832 xp[i] = &(xpp[i*(ksecNPointsPerRadii+1)]);
833 yp[i] = &(ypp[i*(ksecNPointsPerRadii+1)]);
834 xp2[i] = &(xpp2[i*(ksecNPointsPerRadii+1)]);
835 yp2[i] = &(ypp2[i*(ksecNPointsPerRadii+1)]);
842 // find starting and ending angles for all but cooling tube sections
843 secAngleStart[0] = 0.5 * ksecAngleSide13;
844 for(i = 0; i < ksecNRadii - 2; i++) {
846 for(j=0;j<ksecNCoolingTubeDips;j++) tst = (tst||i==ksecDipIndex[j]);
849 for(j=0;j<ksecNCoolingTubeDips;j++) tst =(tst||(i+1)==ksecDipIndex[j]);
850 if (tst) j = i+2; else j = i+1;
851 AnglesForRoundedCorners(secX[i],secY[i],secR[i],secX[j],secY[j],
854 secAngleStart[j] = t1;
855 if(secR[i] > 0.0 && secR[j] > 0.0) {
856 if(secAngleStart[i] > secAngleEnd[i]) secAngleEnd[i] += 360.0;
857 } // end if(secR[i]>0.0 && secR[j]>0.0)
858 secAngleStart2[i] = secAngleStart[i];
859 secAngleEnd2[i] = secAngleEnd[i];
861 secAngleEnd[ksecNRadii-2] = secAngleStart[ksecNRadii-2] +
862 (secAngleEnd[ksecNRadii-5] - secAngleStart[ksecNRadii-5]);
863 if (secAngleEnd[ksecNRadii-2] < 0.0) secAngleEnd[ksecNRadii-2] += 360.0;
864 secAngleStart[ksecNRadii-1] = secAngleEnd[ksecNRadii-2] - 180.0;
865 secAngleEnd[ksecNRadii-1] = secAngleStart[0];
866 secAngleStart2[ksecNRadii-2] = secAngleStart[ksecNRadii-2];
867 secAngleEnd2[ksecNRadii-2] = secAngleEnd[ksecNRadii-2];
868 secAngleStart2[ksecNRadii-1] = secAngleStart[ksecNRadii-1];
869 secAngleEnd2[ksecNRadii-1] = secAngleEnd[ksecNRadii-1];
871 // find location of circle last rounded corner.
874 t0 = TanD(secAngleStart[i]-90.);
875 t1 = TanD(secAngleEnd[j]-90.);
876 t = secY[i] - secY[j];
877 // NOTE: secR[i=0] < 0; secR[j=18] > 0; and secR[j+1=19] < 0
878 t += (-secR[i]+secR[j+1]) * SinD(secAngleStart[i]);
879 t -= (secR[j]-secR[j+1]) * SinD(secAngleEnd[j]);
880 t += t1 * secX[j] - t0*secX[i];
881 t += t1 * (secR[j] - secR[j+1]) * CosD(secAngleEnd[j]);
882 t -= t0 * (-secR[i]+secR[j+1]) * CosD(secAngleStart[i]);
883 secX[ksecNRadii-1] = t / (t1-t0);
884 secY[ksecNRadii-1] = TanD(90.0+0.5*ksecAngleSide13)*
885 (secX[ksecNRadii-1]-secX[0])+secY[0];
886 secX2[ksecNRadii-1] = secX[ksecNRadii-1];
887 secY2[ksecNRadii-1] = secY[ksecNRadii-1];
888 secX3[ksecNRadii-1] = secX[ksecNRadii-1];
889 secY3[ksecNRadii-1] = secY[ksecNRadii-1];
891 // find location of cooling tube centers
892 for(i = 0; i < ksecNCoolingTubeDips; i++) {
894 x0 = secX[j-1] + TMath::Abs(secR[j-1]) * CosD(secAngleEnd[j-1]);
895 y0 = secY[j-1] + TMath::Abs(secR[j-1]) * SinD(secAngleEnd[j-1]);
896 x1 = secX[j+1] + TMath::Abs(secR[j+1]) * CosD(secAngleStart[j+1]);
897 y1 = secY[j+1] + TMath::Abs(secR[j+1]) * SinD(secAngleStart[j+1]);
898 t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
903 // get location of tube center->Surface for locating
904 // this sector around the beam pipe.
905 // This needs to be double checked, but I need my notes for that.
907 xAAtubeCenter0 = x0 + (x1 - x0) * t * 0.5;
908 yAAtubeCenter0 = y0 + (y1 - y0) * t * 0.5;
910 if(a + b*(a - x0) / (b - y0) > 0.0) {
911 secX[j] = a + TMath::Abs(y1-y0) * 2.0 * ksecDipRadii/t0;
912 secY[j] = b - TMath::Sign(2.0*ksecDipRadii,y1-y0) * (x1-x0)/t0;
913 secX2[j] = a + TMath::Abs(y1-y0) * ksecTl/t0;
914 secY2[j] = b - TMath::Sign(ksecTl,y1-y0) * (x1-x0) / t0;
915 secX3[j] = a + TMath::Abs(y1-y0) *
916 (2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY)/t0;
917 secY3[j] = b - TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
920 secX[j] = a - TMath::Abs(y1-y0)*2.0*ksecDipRadii/t0;
921 secY[j] = b + TMath::Sign(2.0*ksecDipRadii,y1-y0)*(x1-x0)/t0;
922 secX2[j] = a - TMath::Abs(y1-y0)*ksecTl/t0;
923 secY2[j] = b + TMath::Sign(ksecTl,y1-y0)*(x1-x0)/t0;
924 secX3[j] = a - TMath::Abs(y1-y0)*(2.0*ksecDipRadii-0.5*
925 ksecCoolTubeFlatY)/t0;
926 secY3[j] = b + TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
928 } // end if(a+b*(a-x0)/(b-y0)>0.0)
930 // Set up Start and End angles to correspond to start/end of dips.
931 t1 = (secDip2[i]-TMath::Abs(secR[j])) / t0;
932 secAngleStart[j] =TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],
933 x0+(x1-x0)*t1-secX[j]);
934 if (secAngleStart[j]<0.0) secAngleStart[j] += 360.0;
935 secAngleStart2[j] = secAngleStart[j];
936 t1 = (secDip2[i]+TMath::Abs(secR[j]))/t0;
937 secAngleEnd[j] = TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],
938 x0+(x1-x0)*t1-secX[j]);
939 if (secAngleEnd[j]<0.0) secAngleEnd[j] += 360.0;
940 secAngleEnd2[j] = secAngleEnd[j];
941 if (secAngleEnd[j]>secAngleStart[j]) secAngleEnd[j] -= 360.0;
942 secR[j] = TMath::Sqrt(secR[j]*secR[j]+4.0*ksecDipRadii*ksecDipRadii);
946 secAngleStart2[8] -= 360.;
947 secAngleStart2[11] -= 360.;
949 SPDsectorShape(ksecNRadii, secX, secY, secR, secAngleStart, secAngleEnd,
950 ksecNPointsPerRadii, m, xp, yp);
952 // Fix up dips to be square.
953 for(i = 0; i < ksecNCoolingTubeDips; i++) {
955 t = 0.5*ksecDipLength+ksecDipRadii;
956 t0 = TMath::RadToDeg()*TMath::ATan(2.0*ksecDipRadii/t);
957 t1 = secAngleEnd[j] + t0;
958 t0 = secAngleStart[j] - t0;
959 x0 = xp[j][1] = secX[j] + t*CosD(t0);
960 y0 = yp[j][1] = secY[j] + t*SinD(t0);
961 x1 = xp[j][ksecNPointsPerRadii-1] = secX[j] + t*CosD(t1);
962 y1 = yp[j][ksecNPointsPerRadii-1] = secY[j] + t*SinD(t1);
963 t0 = 1./((Double_t)(ksecNPointsPerRadii-2));
964 for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
965 // extra points spread them out.
966 t = ((Double_t)(k-1)) * t0;
967 xp[j][k] = x0+(x1-x0) * t;
968 yp[j][k] = y0+(y1-y0) * t;
970 secAngleTurbo[i] = -TMath::RadToDeg() * TMath::ATan2(y1-y0, x1-x0);
973 Form("i=%d -- angle=%f -- x0,y0=(%f, %f) -- x1,y1=(%f, %f)",
974 i, secAngleTurbo[i], x0, y0, x1, y1));
975 } // end if GetDebug(3)
977 sA0 = new TGeoXtru(2);
978 sA0->SetName("ITS SPD Carbon fiber support Sector A0");
979 sA0->DefinePolygon(m, xpp, ypp);
980 sA0->DefineSection(0, -ksecDz);
981 sA0->DefineSection(1, ksecDz);
983 // store the edges of each XY segment which defines
984 // one of the plane zones where staves will have to be placed
985 fSPDsectorX0.Set(ksecNCoolingTubeDips);
986 fSPDsectorY0.Set(ksecNCoolingTubeDips);
987 fSPDsectorX1.Set(ksecNCoolingTubeDips);
988 fSPDsectorY1.Set(ksecNCoolingTubeDips);
990 for(i = 0; i < ksecNCoolingTubeDips; i++) {
991 // Find index in xpp[] and ypp[] corresponding to where the
992 // SPD ladders are to be attached. Order them according to
993 // the ALICE numbering schema. Using array of indexes (+-1 for
994 // cooling tubes. For any "bend/dip/edge, there are
995 // ksecNPointsPerRadii+1 points involved.
997 else if (i == 1) j = 0;
999 ixy0 = (ksecDipIndex[j]-1)*(ksecNPointsPerRadii+1)+
1000 (ksecNPointsPerRadii);
1001 ixy1 = (ksecDipIndex[j]+1) * (ksecNPointsPerRadii+1);
1002 fSPDsectorX0[i] = sA0->GetX(ixy0);
1003 fSPDsectorY0[i] = sA0->GetY(ixy0);
1004 fSPDsectorX1[i] = sA0->GetX(ixy1);
1005 fSPDsectorY1[i] = sA0->GetY(ixy1);
1008 //printf("SectorA#%d ",0);
1009 InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],ksecCthick,
1011 for(i = 1; i < m - 1; i++) {
1012 j = i / (ksecNPointsPerRadii+1);
1013 //printf("SectorA#%d ",i);
1014 InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],
1015 ksecCthick,xpp2[i],ypp2[i]);
1017 //printf("SectorA#%d ",m);
1018 InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
1019 ksecCthick,xpp2[m-1],ypp2[m-1]);
1020 // Fix center value of cooling tube dip and
1021 // find location of cooling tube centers
1022 for(i = 0; i < ksecNCoolingTubeDips; i++) {
1023 j = ksecDipIndex[i];
1026 x1 = xp2[j][ksecNPointsPerRadii-1];
1027 y1 = yp2[j][ksecNPointsPerRadii-1];
1028 t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
1030 for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
1031 // extra points spread them out.
1032 t = ((Double_t)(k-1)) * t0;
1033 xp2[j][k] = x0+(x1-x0) * t;
1034 yp2[j][k] = y0+(y1-y0) * t;
1037 sA1 = new TGeoXtru(2);
1038 sA1->SetName("ITS SPD Carbon fiber support Sector Air A1");
1039 sA1->DefinePolygon(m, xpp2, ypp2);
1040 sA1->DefineSection(0, -ksecDz);
1041 sA1->DefineSection(1, ksecDz);
1043 // Error in TGeoEltu. Semi-axis X must be < Semi-axis Y (?).
1044 sTA0 = new TGeoEltu("ITS SPD Cooling Tube TA0", 0.5 * ksecCoolTubeFlatY,
1045 0.5 * ksecCoolTubeFlatX, ksecDz);
1046 sTA1 = new TGeoEltu("ITS SPD Cooling Tube coolant TA1",
1047 sTA0->GetA() - ksecCoolTubeThick,
1048 sTA0->GetB()-ksecCoolTubeThick,ksecDz);
1049 SPDsectorShape(ksecNRadii,secX2,secY2,secR2,secAngleStart2,secAngleEnd2,
1050 ksecNPointsPerRadii, m, xp, yp);
1051 sB0 = new TGeoXtru(2);
1052 sB0->SetName("ITS SPD Carbon fiber support Sector End B0");
1053 sB0->DefinePolygon(m, xpp, ypp);
1054 sB0->DefineSection(0, ksecDz);
1055 sB0->DefineSection(1, ksecDz + ksecZEndLen);
1057 //printf("SectorB#%d ",0);
1058 // Points around the most sharpened tips have to be avoided - M.S. 24 feb 09
1059 const Int_t nSpecialPoints = 5;
1060 const Int_t kSpecialPoints[nSpecialPoints] = {7, 17, 47, 62, 77};
1062 InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],
1063 ksecCthick2,xpp2[i2],ypp2[i2]);
1064 for(i = 1; i < m - 1; i++) {
1066 for(k = 0; k < ksecNCoolingTubeDips; k++)
1067 if((i/(ksecNPointsPerRadii+1))==ksecDipIndex[k])
1068 if(!(ksecDipIndex[k]*(ksecNPointsPerRadii+1) == i ||
1069 ksecDipIndex[k]*(ksecNPointsPerRadii+1) +
1070 ksecNPointsPerRadii == i))
1071 t = ksecRCoolOut-ksecRCoolIn;
1072 //printf("SectorB#%d ",i);
1073 Bool_t useThisPoint = kTRUE;
1074 for(Int_t ii = 0; ii < nSpecialPoints; ii++)
1075 if ( (i == kSpecialPoints[ii] - 1) ||
1076 (i == kSpecialPoints[ii] + 1) ) useThisPoint = kFALSE;
1079 InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],t,
1083 //printf("SectorB#%d ",m);
1085 InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
1086 ksecCthick2,xpp2[i2],ypp2[i2]);
1087 sB1 = new TGeoXtru(2);
1088 sB1->SetName("ITS SPD Carbon fiber support Sector Air End B1");
1089 sB1->DefinePolygon(i2+1, xpp2, ypp2);
1090 sB1->DefineSection(0,sB0->GetZ(0));
1091 sB1->DefineSection(1,sB0->GetZ(1)-ksecCthick2);
1092 const Double_t kspdEndHoleRadius1=5.698*fgkmm;
1093 const Double_t kspdEndHoleRadius2=2.336*fgkmm;
1094 const Double_t kspdEndHoleDisplacement=6.29*fgkmm;
1097 t= ((Double_t)i)/((Double_t)(k));
1098 if(!CFHolePoints(t,kspdEndHoleRadius1,kspdEndHoleRadius2,
1099 kspdEndHoleDisplacement,xpp2[i],ypp2[i])){
1100 Warning("CarbonFiberSector","CFHolePoints failed "
1101 "i=%d m=%d k=%d t=%e",i,m,k,t);
1103 // simitry in each quadrant.
1104 xpp2[2*k-i] = -xpp2[i];
1105 ypp2[2*k-i] = ypp2[i];
1106 xpp2[2*k+i] = -xpp2[i];
1107 ypp2[2*k+i] = -ypp2[i];
1108 xpp2[4*k-i] = xpp2[i];
1109 ypp2[4*k-i] = -ypp2[i];
1111 //xpp2[m-1] = xpp2[0]; // begining point in
1112 //ypp2[m-1] = ypp2[0]; // comment with end point
1113 sB2 = new TGeoXtru(2);
1114 sB2->SetName("ITS SPD Hole in Carbon fiber support End plate");
1115 sB2->DefinePolygon(4*k, xpp2, ypp2);
1116 sB2->DefineSection(0,sB1->GetZ(1));
1117 sB2->DefineSection(1,sB0->GetZ(1));
1118 // SPD sector mount blocks
1119 const Double_t kMountBlock[3] = {0.5*(1.8-0.2)*fgkmm,0.5*22.0*fgkmm,
1121 sB3 = new TGeoBBox((Double_t*)kMountBlock);
1122 // SPD sector cooling tubes
1123 sTB0 = new TGeoTube("ITS SPD Cooling Tube End TB0", 0.0,
1124 0.5*ksecCoolTubeROuter,0.5*(sB1->GetZ(1)-sB1->GetZ(0)));
1125 sTB1 = new TGeoTube("ITS SPD Cooling Tube End coolant TB0", 0.0,
1126 sTB0->GetRmax() - ksecCoolTubeThick,sTB0->GetDz());
1129 if(medSPDcf) medSPDcf->Dump(); else AliInfo("medSPDcf = 0");
1130 if(medSPDss) medSPDss->Dump(); else AliInfo("medSPDss = 0");
1131 if(medSPDair) medSPDair->Dump(); else AliInfo("medSPDAir = 0");
1132 if(medSPDcoolfl) medSPDcoolfl->Dump();else AliInfo("medSPDcoolfl = 0");
1133 sA0->InspectShape();
1134 sA1->InspectShape();
1135 sB0->InspectShape();
1136 sB1->InspectShape();
1137 sB2->InspectShape();
1138 } // end if(GetDebug(3))
1140 // create the assembly of the support and place staves on it
1141 TGeoVolumeAssembly *vM0 = new TGeoVolumeAssembly(
1142 "ITSSPDSensitiveVirtualvolumeM0");
1143 StavesInSector(vM0);
1144 // create other volumes with some graphical settings
1145 TGeoVolume *vA0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorA0",
1147 vA0->SetVisibility(kTRUE);
1148 vA0->SetLineColor(4); // Blue
1149 vA0->SetLineWidth(1);
1150 vA0->SetFillColor(vA0->GetLineColor());
1151 vA0->SetFillStyle(4010); // 10% transparent
1152 TGeoVolume *vA1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorAirA1",
1154 vA1->SetVisibility(kTRUE);
1155 vA1->SetLineColor(7); // light Blue
1156 vA1->SetLineWidth(1);
1157 vA1->SetFillColor(vA1->GetLineColor());
1158 vA1->SetFillStyle(4090); // 90% transparent
1159 TGeoVolume *vTA0 = new TGeoVolume("ITSSPDCoolingTubeTA0", sTA0, medSPDss);
1160 vTA0->SetVisibility(kTRUE);
1161 vTA0->SetLineColor(15); // gray
1162 vTA0->SetLineWidth(1);
1163 vTA0->SetFillColor(vTA0->GetLineColor());
1164 vTA0->SetFillStyle(4000); // 0% transparent
1165 TGeoVolume *vTA1 = new TGeoVolume("ITSSPDCoolingTubeFluidTA1",
1166 sTA1, medSPDcoolfl);
1167 vTA1->SetVisibility(kTRUE);
1168 vTA1->SetLineColor(6); // Purple
1169 vTA1->SetLineWidth(1);
1170 vTA1->SetFillColor(vTA1->GetLineColor());
1171 vTA1->SetFillStyle(4000); // 0% transparent
1172 TGeoVolume *vB0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndB0",
1174 vB0->SetVisibility(kTRUE);
1175 vB0->SetLineColor(1); // Black
1176 vB0->SetLineWidth(1);
1177 vB0->SetFillColor(vB0->GetLineColor());
1178 vB0->SetFillStyle(4000); // 0% transparent
1179 TGeoVolume *vB1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB1",
1181 vB1->SetVisibility(kTRUE);
1182 vB1->SetLineColor(0); // white
1183 vB1->SetLineWidth(1);
1184 vB1->SetFillColor(vB1->GetLineColor());
1185 vB1->SetFillStyle(4100); // 100% transparent
1186 TGeoVolume *vB2 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB2",
1188 vB2->SetVisibility(kTRUE);
1189 vB2->SetLineColor(0); // white
1190 vB2->SetLineWidth(1);
1191 vB2->SetFillColor(vB2->GetLineColor());
1192 vB2->SetFillStyle(4100); // 100% transparent
1193 TGeoVolume *vB3 = new TGeoVolume(
1194 "ITSSPDCarbonFiberSupportSectorMountBlockB3",sB3, medSPDcf);
1195 vB3->SetVisibility(kTRUE);
1196 vB3->SetLineColor(1); // Black
1197 vB3->SetLineWidth(1);
1198 vB3->SetFillColor(vB3->GetLineColor());
1199 vB3->SetFillStyle(4000); // 0% transparent
1200 TGeoVolume *vTB0 = new TGeoVolume("ITSSPDCoolingTubeEndTB0",sTB0,medSPDss);
1201 vTB0->SetVisibility(kTRUE);
1202 vTB0->SetLineColor(15); // gray
1203 vTB0->SetLineWidth(1);
1204 vTB0->SetFillColor(vTB0->GetLineColor());
1205 vTB0->SetFillStyle(4000); // 0% transparent
1206 TGeoVolume *vTB1 = new TGeoVolume("ITSSPDCoolingTubeEndFluidTB1",sTB1,
1208 vTB1->SetVisibility(kTRUE);
1209 vTB1->SetLineColor(7); // light blue
1210 vTB1->SetLineWidth(1);
1211 vTB1->SetFillColor(vTB1->GetLineColor());
1212 vTB1->SetFillStyle(4050); // 0% transparent
1214 // add volumes to mother container passed as argument of this method
1215 moth->AddNode(vM0,1,0); // Add virtual volume to mother
1216 vA0->AddNode(vA1,1,0); // Put air inside carbon fiber.
1217 vB0->AddNode(vB1,1,0); // Put air inside carbon fiber ends.
1218 vB0->AddNode(vB2,1,0); // Put air wholes inside carbon fiber ends
1219 vTA0->AddNode(vTA1,1,0); // Put cooling liquid indide tube middel.
1220 vTB0->AddNode(vTB1,1,0); // Put cooling liquid inside tube end.
1221 Double_t tubeEndLocal[3]={0.0,0.0,sTA0->GetDz()};
1222 for(i = 0; i < ksecNCoolingTubeDips; i++) {
1223 x0 = secX3[ksecDipIndex[i]];
1224 y0 = secY3[ksecDipIndex[i]];
1225 t = 90.0 - secAngleTurbo[i];
1226 trans = new TGeoTranslation("",x0,y0,0.5*(sB1->GetZ(0)+sB1->GetZ(1)));
1227 vB1->AddNode(vTB0, i+1, trans);
1228 // Find location of tube ends for later use.
1229 trans->LocalToMaster(tubeEndLocal,fTubeEndSector[0][0][i]);
1230 rot = new TGeoRotation("", 0.0, 0.0, t);
1231 rotrans = new TGeoCombiTrans("", x0, y0, 0.0, rot);
1232 vM0->AddNode(vTA0, i+1, rotrans);
1234 vM0->AddNode(vA0, 1, 0);
1235 vM0->AddNode(vB0, 1, 0);
1237 rot = new TGeoRotation("", 90., 0., 90., 90., 180., 0.);
1238 vM0->AddNode(vB0,2,rot);
1239 // Find location of tube ends for later use.
1240 for(i=0;i<ksecNCoolingTubeDips;i++) rot->LocalToMaster(
1241 fTubeEndSector[0][0][i],fTubeEndSector[0][1][i]);
1243 t = -TMath::RadToDeg()*TMath::ATan2(
1244 sB0->GetX(0)-sB0->GetX(sB0->GetNvert()-1),
1245 sB0->GetY(0)-sB0->GetY(sB0->GetNvert()-1));
1246 rot = new TGeoRotation("",t,0.0,0.0);// z axis rotation
1247 x0 = 0.5*(sB0->GetX(0)+sB0->GetX(sB0->GetNvert()-1))+
1248 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1249 y0 = 0.5*(sB0->GetY(0)+sB0->GetY(sB0->GetNvert()-1))+
1250 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1251 z0 = sB0->GetZ(0)+sB3->GetDZ();
1252 rotrans = new TGeoCombiTrans("",x0,y0,z0,rot);
1253 vM0->AddNode(vB3,1,rotrans); // Put Mounting bracket on sector
1254 rotrans = new TGeoCombiTrans("",x0,y0,-z0,rot);
1255 vM0->AddNode(vB3,2,rotrans); // Put Mounting bracket on sector
1257 j = 0; // right side, find point with largest x value
1259 for(i=1;i<sB0->GetNvert();i++)if(sB0->GetX(i)>x1) {j=i;x1=sB0->GetX(i);}
1260 j--; // Too big by 1
1261 //t = -TMath::RadToDeg()*TMath::ATan2(
1262 // sB0->GetX(j)-sB0->GetX(j-1),
1263 // sB0->GetY(j)-sB0->GetY(j-1));
1266 rot = new TGeoRotation("",t,0.0,0.0); // z axis rotation
1267 /* // this way gets correct orientation but wrong "height"
1268 x0 = 0.5*(sB0->GetX(j)+sB0->GetX(j-1))+
1269 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1270 y0 = 0.5*(sB0->GetY(j)+sB0->GetY(j-1))+
1271 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1272 z0 = sB0->GetZ(0)+sB3->GetDZ();
1273 */ // I don't understand the need for this factor 3.5.
1274 // posibly the SPD sector as coded isn't symetric which the
1275 // plans would suggest.
1276 x0 = -0.5*(sB0->GetX(0)+sB0->GetX(sB0->GetNvert()-1))-3.5*
1277 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1278 y0 = 0.5*(sB0->GetY(0)+sB0->GetY(sB0->GetNvert()-1))-3.5*
1279 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1280 rotrans = new TGeoCombiTrans("",1.01*x0,y0,z0,rot);
1281 vM0->AddNode(vB3,3,rotrans); // Put Mounting bracket on sector
1282 rotrans = new TGeoCombiTrans("",1.01*x0,y0,-z0,rot);
1283 vM0->AddNode(vB3,4,rotrans); // Put Mounting bracket on sector
1296 } // end if(GetDebug(3))
1298 //______________________________________________________________________
1299 Bool_t AliITSv11GeometrySPD::CFHolePoints(Double_t s,Double_t r1,
1300 Double_t r2,Double_t l,Double_t &x,Double_t &y) const
1303 // Step along arck a distancs ds and compute boundry of
1304 // two holes (radius r1 and r2) a distance l apart (along
1307 // Double_t s fractional Distance along arcs [0-1]
1308 // where 0-> alpha=beta=0, 1-> alpha=90 degrees.
1309 // Double_t r1 radius at center circle
1310 // Double_t r2 radius of displaced circle
1311 // Double_t l Distance displaced circle is displaces (x-axis)
1313 // Double_t x x coordinate along double circle.
1314 // Double_t y y coordinate along double circle.
1316 // logical, kFALSE if an error
1318 Double_t alpha,beta;
1319 Double_t ac,bc,scb,sca,t,alphac,betac; // at intersection of two circles
1322 ac = r1*r1-l*l-r2*r2;
1324 if(bc==0.0) {printf("bc=0 l=%e r2=%e\n",l,r2);return kFALSE;}
1325 betac = TMath::ACos(ac/bc);
1326 alphac = TMath::Sqrt((bc-ac)*(bc+ac))/(2.*l*r1);
1329 t = r1*0.5*TMath::Pi() - sca + scb;
1332 x = r2*TMath::Cos(beta) + l;
1333 y = r2*TMath::Sin(beta);
1334 //printf("betac=%e scb=%e t=%e s=%e beta=%e x=%e y=%e\n",
1335 // betac,scb,t,s,beta,x,y);
1338 beta = (s*t-scb+sca)/(r1*0.5*TMath::Pi());
1339 alpha = beta*0.5*TMath::Pi();
1340 x = r1*TMath::Cos(alpha);
1341 y = r1*TMath::Sin(alpha);
1342 //printf("alphac=%e sca=%e t=%e s=%e beta=%e alpha=%e x=%e y=%e\n",
1343 // alphac,sca,t,s,beta,alpha,x,y);
1348 //______________________________________________________________________
1349 Bool_t AliITSv11GeometrySPD::GetSectorMountingPoints(Int_t index,Double_t &x0,
1350 Double_t &y0, Double_t &x1, Double_t &y1) const
1353 // Returns the edges of the straight borders in the SPD sector shape,
1354 // which are used to mount staves on them.
1355 // Coordinate system is that of the carbon fiber sector volume.
1357 // Index numbering is as follows:
1363 // Arguments [the ones passed by reference contain output values]:
1364 // Int_t index --> location index according to above scheme [0-5]
1365 // Double_t &x0 --> (by ref) x0 location or the ladder sector [cm]
1366 // Double_t &y0 --> (by ref) y0 location of the ladder sector [cm]
1367 // Double_t &x1 --> (by ref) x1 location or the ladder sector [cm]
1368 // Double_t &y1 --> (by ref) y1 location of the ladder sector [cm]
1369 // TGeoManager *mgr --> The TGeo builder
1371 // The location is described by a line going from (x0, y0) to (x1, y1)
1373 // Returns kTRUE if no problems encountered.
1374 // Returns kFALSE if a problem was encountered (e.g.: shape not found).
1376 Int_t isize = fSPDsectorX0.GetSize();
1378 x0 = x1 = y0 = y1 = 0.0;
1379 if(index < 0 || index > isize) {
1380 AliError(Form("index = %d: allowed 0 --> %", index, isize));
1382 } // end if(index<0||index>isize)
1383 x0 = fSPDsectorX0[index];
1384 x1 = fSPDsectorX1[index];
1385 y0 = fSPDsectorY0[index];
1386 y1 = fSPDsectorY1[index];
1389 //______________________________________________________________________
1390 void AliITSv11GeometrySPD::SPDsectorShape(Int_t n,const Double_t *xc,
1391 const Double_t *yc, const Double_t *r,
1392 const Double_t *ths, const Double_t *the,
1393 Int_t npr, Int_t &m, Double_t **xp, Double_t **yp) const
1396 // Code to compute the points that make up the shape of the SPD
1397 // Carbon fiber support sections
1399 // Int_t n size of arrays xc,yc, and r.
1400 // Double_t *xc array of x values for radii centers.
1401 // Double_t *yc array of y values for radii centers.
1402 // Double_t *r array of signed radii values.
1403 // Double_t *ths array of starting angles [degrees].
1404 // Double_t *the array of ending angles [degrees].
1405 // Int_t npr the number of lines segments to aproximate the arc.
1406 // Outputs (arguments passed by reference):
1407 // Int_t m the number of enetries in the arrays *xp[npr+1]
1409 // Double_t **xp array of x coordinate values of the line segments
1410 // which make up the SPD support sector shape.
1411 // Double_t **yp array of y coordinate values of the line segments
1412 // which make up the SPD support sector shape.
1419 cout <<" X \t Y \t R \t S \t E" << m << endl;
1420 for(i = 0; i < n; i++) {
1421 cout << "{" << xc[i] << ", ";
1422 cout << yc[i] << ", ";
1423 cout << r[i] << ", ";
1424 cout << ths[i] << ", ";
1425 cout << the[i] << "}, " << endl;
1427 } // end if(GetDebug(2))
1428 if (GetDebug(3)) cout << "Double_t sA0 = [" << n*(npr+1)+1<<"][";
1429 if (GetDebug(4)) cout << "3] {";
1430 else if(GetDebug(3)) cout <<"2] {";
1432 for(i = 0; i < n; i++) {
1433 t1 = (the[i] - ths[i]) / t0;
1434 if(GetDebug(5)) cout << "t1 = " << t1 << endl;
1435 for(k = 0; k <= npr; k++) {
1436 t = ths[i] + ((Double_t)k) * t1;
1437 xp[i][k] = TMath::Abs(r[i]) * CosD(t) + xc[i];
1438 yp[i][k] = TMath::Abs(r[i]) * SinD(t) + yc[i];
1440 cout << "{" << xp[i][k] << "," << yp[i][k];
1441 if (GetDebug(4)) cout << "," << t;
1443 } // end if GetDebug
1445 if(GetDebug(3)) cout << endl;
1447 if(GetDebug(3)) cout << "{" << xp[0][0] << ", " << yp[0][0];
1448 if(GetDebug(4)) cout << "," << ths[0];
1449 if(GetDebug(3)) cout << "}}" << endl;
1452 //______________________________________________________________________
1453 TGeoVolume* AliITSv11GeometrySPD::CreateLadder(Int_t layer,TArrayD &sizes,
1454 TGeoManager *mgr) const
1457 // Creates the "ladder" = silicon sensor + 5 chips.
1458 // Returns a TGeoVolume containing the following components:
1459 // - the sensor (TGeoBBox), whose name depends on the layer
1460 // - 5 identical chips (TGeoBBox)
1461 // - a guard ring around the sensor (subtraction of TGeoBBoxes),
1462 // which is separated from the rest of sensor because it is not
1464 // - bump bondings (TGeoBBox stripes for the whole width of the
1465 // sensor, one per column).
1468 // 1 - the owner layer (MUST be 1 or 2 or a fatal error is raised)
1469 // 2 - a TArrayD passed by reference, which will contain relevant
1470 // dimensions related to this object:
1471 // size[0] = 'thickness' (the smallest dimension)
1472 // size[1] = 'length' (the direction along the ALICE Z axis)
1473 // size[2] = 'width' (extension in the direction perp. to the
1475 // 3 - the used TGeoManager
1477 // ** CRITICAL CHECK **
1478 // layer number can be ONLY 1 or 2
1479 if (layer != 1 && layer != 2) AliFatal("Layer number MUST be 1 or 2");
1482 TGeoMedium *medAir = GetMedium("AIR$",mgr);
1483 TGeoMedium *medSPDSiChip = GetMedium("SPD SI CHIP$",mgr); // SPD SI CHIP
1484 TGeoMedium *medSi = GetMedium("SI$",mgr);
1485 TGeoMedium *medBumpBond = GetMedium("COPPER$",mgr); // ??? BumpBond
1488 Double_t chipThickness = fgkmm * 0.150;
1489 Double_t chipWidth = fgkmm * 15.950;
1490 Double_t chipLength = fgkmm * 13.600;
1491 Double_t chipSpacing = fgkmm * 0.400; // separation of chips along Z
1492 Double_t sensThickness = fgkmm * 0.200;
1493 Double_t sensLength = fgkmm * 69.600;
1494 Double_t sensWidth = fgkmm * 12.800;
1495 Double_t guardRingWidth = fgkmm * 0.560; // a border of this thickness
1496 // all around the sensor
1497 Double_t bbLength = fgkmm * 0.042;
1498 Double_t bbWidth = sensWidth;
1499 Double_t bbThickness = fgkmm * 0.012;
1500 Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
1501 // compute the size of the container volume which
1502 // will also be returned in the referenced TArrayD;
1503 // for readability, they are linked by reference to a more meaningful name
1505 Double_t &thickness = sizes[0];
1506 Double_t &length = sizes[1];
1507 Double_t &width = sizes[2];
1508 // the container is a box which exactly enclose all the stuff;
1510 length = sensLength + 2.0*guardRingWidth;
1511 thickness = sensThickness + chipThickness + bbThickness;
1514 // While creating this volume, since it is a sensitive volume,
1515 // we must respect some standard criteria for its local reference frame.
1516 // Local X must correspond to x coordinate of the sensitive volume:
1517 // this means that we are going to create the container with a local
1518 // reference system that is **not** in the middle of the box.
1519 // This is accomplished by calling the shape constructor with an
1520 // additional option ('originShift'):
1521 Double_t xSens = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
1522 Double_t originShift[3] = {-xSens, 0., 0.};
1523 TGeoBBox *shapeContainer = new TGeoBBox(0.5*width,0.5*thickness,
1524 0.5*length,originShift);
1525 // then the volume is made of air, and using this shape
1526 TGeoVolume *container = new TGeoVolume(Form("ITSSPDlay%d-Ladder",layer),
1527 shapeContainer, medAir);
1528 // the chip is a common box
1529 TGeoVolume *volChip = mgr->MakeBox("ITSSPDchip",medSPDSiChip,
1530 0.5*chipWidth,0.5*chipThickness,0.5*chipLength);
1531 // the sensor as well
1532 TGeoVolume *volSens = mgr->MakeBox(GetSenstiveVolumeName(layer),medSi,
1533 0.5*sensWidth,0.5*sensThickness,0.5*sensLength);
1534 // the guard ring shape is the subtraction of two boxes with the
1536 TGeoBBox *shIn = new TGeoBBox(0.5*sensWidth,sensThickness,0.5*sensLength);
1537 TGeoBBox *shOut = new TGeoBBox(0.5*sensWidth+guardRingWidth,
1538 0.5*sensThickness,0.5*sensLength+guardRingWidth);
1539 shIn->SetName("ITSSPDinnerBox");
1540 shOut->SetName("ITSSPDouterBox");
1541 TGeoCompositeShape *shBorder = new TGeoCompositeShape(
1542 "ITSSPDgaurdRingBorder",Form("%s-%s",shOut->GetName(),shIn->GetName()));
1543 TGeoVolume *volBorder = new TGeoVolume("ITSSPDgaurdRing",shBorder,medSi);
1544 // bump bonds for one whole column
1545 TGeoVolume *volBB = mgr->MakeBox("ITSSPDbb",medBumpBond,0.5*bbWidth,
1546 0.5*bbThickness,0.5*bbLength);
1547 // set colors of all objects for visualization
1548 volSens->SetLineColor(kYellow + 1);
1549 volChip->SetLineColor(kGreen);
1550 volBorder->SetLineColor(kYellow + 3);
1551 volBB->SetLineColor(kGray);
1554 // sensor is translated along thickness (X) and width (Y)
1555 Double_t ySens = 0.5 * (thickness - sensThickness);
1556 Double_t zSens = 0.0;
1557 // we want that the x of the ladder is the same as the one of
1558 // its sensitive volume
1559 TGeoTranslation *trSens = new TGeoTranslation(0.0, ySens, zSens);
1560 // bump bonds are translated along all axes:
1561 // keep same Y used for sensors, but change the Z
1562 TGeoTranslation *trBB[160];
1564 Double_t y = 0.5 * (thickness - bbThickness) - sensThickness;
1565 Double_t z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
1567 for (i = 0; i < 160; i++) {
1568 trBB[i] = new TGeoTranslation(x, y, z);
1570 case 31:case 63:case 95:case 127:
1571 z += fgkmm * 0.625 + fgkmm * 0.2;
1577 // the chips are translated along the length (Z) and thickness (X)
1578 TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
1580 y = 0.5 * (chipThickness - thickness);
1582 for (i = 0; i < 5; i++) {
1583 z = -0.5*length + guardRingWidth
1584 + (Double_t)i*chipSpacing + ((Double_t)(i) + 0.5)*chipLength;
1585 trChip[i] = new TGeoTranslation(x, y, z);
1588 // add nodes to container
1589 container->AddNode(volSens, 1, trSens);
1590 container->AddNode(volBorder, 1, trSens);
1591 for (i = 0; i < 160; i++) container->AddNode(volBB,i+1,trBB[i]);
1592 for (i = 0; i < 5; i++) container->AddNode(volChip,i+3,trChip[i]);
1593 // return the container
1598 //______________________________________________________________________
1599 TGeoVolume* AliITSv11GeometrySPD::CreateLadder
1600 (Int_t layer, TArrayD &sizes, TGeoManager *mgr) const
1603 // Creates the "ladder" = silicon sensor + 5 chips.
1604 // Returns a TGeoVolume containing the following components:
1605 // - the sensor (TGeoBBox), whose name depends on the layer
1606 // - 5 identical chips (TGeoBBox)
1607 // - a guard ring around the sensor (subtraction of TGeoBBoxes),
1608 // which is separated from the rest of sensor because it is not
1610 // - bump bondings (TGeoBBox stripes for the whole width of the
1611 // sensor, one per column).
1614 // 1 - the owner layer (MUST be 1 or 2 or a fatal error is raised)
1615 // 2 - a TArrayD passed by reference, which will contain relevant
1616 // dimensions related to this object:
1617 // size[0] = 'thickness' (the smallest dimension)
1618 // size[1] = 'length' (the direction along the ALICE Z axis)
1619 // size[2] = 'width' (extension in the direction perp. to the
1621 // 3 - the used TGeoManager
1623 // ** CRITICAL CHECK ******************************************************
1624 // layer number can be ONLY 1 or 2
1625 if (layer != 1 && layer != 2) AliFatal("Layer number MUST be 1 or 2");
1627 // ** MEDIA ***************************************************************
1629 TGeoMedium *medAir = GetMedium("AIR$",mgr);
1630 TGeoMedium *medSPDSiChip = GetMedium("SPD SI CHIP$",mgr); // SPD SI CHIP
1631 TGeoMedium *medSi = GetMedium("SI$",mgr);
1632 TGeoMedium *medBumpBond = GetMedium("COPPER$",mgr); // ??? BumpBond
1634 // ** SIZES ***************************************************************
1636 Double_t chipThickness = fgkmm * 0.150;
1637 Double_t chipWidth = fgkmm * 15.950;
1638 Double_t chipLength = fgkmm * 13.600;
1639 Double_t chipSpacing = fgkmm * 0.400; // separation of chips along Z
1640 Double_t sensThickness = fgkmm * 0.200;
1641 Double_t sensLength = fgkmm * 69.600;
1642 Double_t sensWidth = fgkmm * 12.800;
1643 Double_t guardRingWidth = fgkmm * 0.560; // guard ring around sensor
1644 Double_t bbLength = fgkmm * 0.042;
1645 Double_t bbWidth = sensWidth;
1646 Double_t bbThickness = fgkmm * 0.012;
1647 Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
1649 // the three dimensions of the box which contains the ladder
1650 // are returned in the 'sizes' argument, and are used for volumes positionement
1651 // for readability purpose, they are linked by reference to a more meaningful name
1653 Double_t &thickness = sizes[0];
1654 Double_t &length = sizes[1];
1655 Double_t &width = sizes[2];
1656 // the container is a box which exactly enclose all the stuff
1658 length = sensLength + 2.0*guardRingWidth;
1659 thickness = sensThickness + chipThickness + bbThickness;
1661 // ** VOLUMES *************************************************************
1663 // This is a sensitive volume.
1664 // Local X must correspond to x coordinate of the sensitive volume:
1665 // to respect this, the origin of the local reference system
1666 // must be shifted from the middle of the box, using
1667 // an additional option ('originShift') when creating the container shape:
1668 Double_t xSens = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
1669 Double_t originShift[3] = {-xSens, 0., 0.};
1671 // now the container is a TGeoBBox with this shift,
1672 // and the volume is made of air (it does not exist in reality)
1673 TGeoBBox *shLadder = new TGeoBBox(0.5*width, 0.5*thickness, 0.5*length, originShift);
1674 TGeoVolume *vLadder = new TGeoVolume(Form("ITSSPDlay%d-Ladder", layer), shLadder, medAir);
1676 // the chip is a common box
1677 TGeoVolume *vChip = mgr->MakeBox("ITSSPDchip", medSPDSiChip,
1678 0.5*chipWidth, 0.5*chipThickness, 0.5*chipLength);
1680 // to build the sensor with its guard ring, we create a TGeoBBox with the size
1681 // of the sensor + guard ring, and we insert the true sensor into it as an
1682 // internal node: this simplifies the implementation with the same result
1683 TGeoVolume *vSensGuard = mgr->MakeBox(Form("%s-guardRing", GetSenstiveVolumeName(layer)),
1685 0.5*sensWidth + guardRingWidth,
1687 0.5*sensLength + guardRingWidth);
1688 TGeoVolume *vSens = mgr->MakeBox(GetSenstiveVolumeName(layer), medSi,
1689 0.5*sensWidth,0.5*sensThickness,0.5*sensLength);
1690 vSensGuard->AddNode(vSens, 0);
1691 vSensGuard->SetTransparency(50);
1693 // bump bond is a common box for one whole column
1694 TGeoVolume *vBB = mgr->MakeBox("ITSSPDbb", medBumpBond,
1695 0.5*bbWidth, 0.5*bbThickness, 0.5*bbLength);
1697 // set colors of all objects for visualization
1698 vLadder->SetLineColor(kRed);
1699 vSens->SetLineColor(kYellow + 1);
1700 vChip->SetLineColor(kGreen);
1701 vSensGuard->SetLineColor(kYellow + 3);
1702 vBB->SetLineColor(kGray);
1705 // sensor is translated along thickness (Y) and width (X)
1706 Double_t ySens = 0.5 * (thickness - sensThickness);
1707 Double_t zSens = 0.0;
1708 // we want that the x of the ladder is the same as the one of
1709 // its sensitive volume
1710 TGeoTranslation *trSens = new TGeoTranslation(0.0, ySens, zSens);
1711 // bump bonds are translated along all axes:
1712 // keep same Y used for sensors, but change the Z
1713 TGeoTranslation *trBB[160];
1715 Double_t y = 0.5 * (thickness - bbThickness) - sensThickness;
1716 Double_t z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
1718 for (i = 0; i < 160; i++) {
1719 trBB[i] = new TGeoTranslation(x, y, z);
1721 case 31:case 63:case 95:case 127:
1722 z += fgkmm * 0.625 + fgkmm * 0.2;
1728 // the chips are translated along the length (Z) and thickness (X)
1729 TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
1731 y = 0.5 * (chipThickness - thickness);
1733 for (i = 0; i < 5; i++) {
1734 z = -0.5*length + guardRingWidth
1735 + (Double_t)i*chipSpacing + ((Double_t)(i) + 0.5)*chipLength;
1736 trChip[i] = new TGeoTranslation(x, y, z);
1739 // add nodes to container
1740 vLadder->AddNode(vSensGuard, 1, trSens);
1741 //vLadderAddNode(volBorder, 1, trSens);
1742 for (i = 0; i < 160; i++) vLadder->AddNode(vBB,i+1,trBB[i]);
1743 for (i = 0; i < 5; i++) vLadder->AddNode(vChip,i+3,trChip[i]);
1744 // return the container
1749 //______________________________________________________________________
1750 TGeoVolume* AliITSv11GeometrySPD::CreateClip(TArrayD &sizes,Bool_t isDummy,
1751 TGeoManager *mgr) const
1754 // Creates the carbon fiber clips which are added to the central ladders.
1755 // They have a complicated shape which is approximated by a TGeoXtru
1756 // Implementation of a single clip over an half-stave.
1757 // It has a complicated shape which is approximated to a section like this:
1762 // / 1\\___________________4
1763 // 0 \___________________
1765 // with a finite thickness for all the shape
1766 // Its local reference frame is such that point A corresponds to origin.
1768 Double_t fullLength = fgkmm * 12.6; // = x4 - x0
1769 Double_t flatLength = fgkmm * 5.4; // = x4 - x3
1770 Double_t inclLongLength = fgkmm * 5.0; // = 5-6
1771 Double_t inclShortLength = fgkmm * 2.0; // = 6-7
1772 Double_t fullHeight = fgkmm * 2.8; // = y6 - y3
1773 Double_t thickness = fgkmm * 0.18; // thickness
1774 Double_t totalLength = fgkmm * 52.0; // total length in Z
1775 Double_t holeSize = fgkmm * 5.0; // dimension of cubic
1776 // hole inserted for pt1000
1777 Double_t angle1 = 27.0; // supplementary of angle DCB
1778 Double_t angle2; // angle DCB
1779 Double_t angle3; // angle of GH with vertical
1781 angle2 = 0.5 * (180.0 - angle1);
1782 angle3 = 90.0 - TMath::ACos(fullLength - flatLength -
1783 inclLongLength*TMath::Cos(angle1)) *
1785 angle1 *= TMath::DegToRad();
1786 angle2 *= TMath::DegToRad();
1787 angle3 *= TMath::DegToRad();
1789 Double_t x[8], y[8];
1792 x[1] = x[0] + fullLength - flatLength - inclLongLength*TMath::Cos(angle1);
1793 x[2] = x[0] + fullLength - flatLength;
1794 x[3] = x[0] + fullLength;
1796 x[5] = x[4] - flatLength + thickness * TMath::Cos(angle2);
1801 y[1] = y[0] + inclShortLength * TMath::Cos(angle3);
1802 y[2] = y[1] - inclLongLength * TMath::Sin(angle1);
1804 y[4] = y[3] + thickness;
1806 y[6] = y[1] + thickness;
1807 y[7] = y[0] + thickness;
1810 sizes[0] = totalLength;
1811 sizes[1] = fullHeight;
1818 if(isDummy){// use this argument when on ewant just the
1819 // positions without create any volume
1823 TGeoXtru *shClip = new TGeoXtru(2);
1824 shClip->SetName("ITSSPDshclip");
1825 shClip->DefinePolygon(8, x, y);
1826 shClip->DefineSection(0, -0.5*totalLength, 0., 0., 1.0);
1827 shClip->DefineSection(1, 0.5*totalLength, 0., 0., 1.0);
1829 TGeoBBox *shHole = new TGeoBBox("ITSSPDSHClipHole",0.5*holeSize,
1830 0.5*holeSize,0.5*holeSize);
1831 TGeoTranslation *tr1 = new TGeoTranslation("ITSSPDTRClipHole1",x[2],0.0,
1833 TGeoTranslation *tr2 = new TGeoTranslation("ITSSPDTRClipHole2",x[2],0.0,
1835 TGeoTranslation *tr3 = new TGeoTranslation("ITSSPDTRClipHole3",x[2],0.0,
1837 tr1->RegisterYourself();
1838 tr2->RegisterYourself();
1839 tr3->RegisterYourself();
1841 //TString strExpr("ITSSPDshclip-(");
1842 TString strExpr(shClip->GetName());
1843 strExpr.Append("-(");
1844 strExpr.Append(Form("%s:%s+", shHole->GetName(), tr1->GetName()));
1845 strExpr.Append(Form("%s:%s+", shHole->GetName(), tr2->GetName()));
1846 strExpr.Append(Form("%s:%s)", shHole->GetName(), tr3->GetName()));
1847 TGeoCompositeShape *shClipHole = new TGeoCompositeShape(
1848 "ITSSPDSHClipHoles",strExpr.Data());
1850 TGeoMedium *mat = GetMedium("SPD C (M55J)$", mgr);
1851 TGeoVolume *vClip = new TGeoVolume("ITSSPDclip", shClipHole, mat);
1852 vClip->SetLineColor(kGray + 2);
1854 }//______________________________________________________________________
1855 TGeoCompositeShape* AliITSv11GeometrySPD::CreateGroundingFoilShape
1856 (Int_t itype,Double_t &length,Double_t &width,
1857 Double_t thickness,TArrayD &sizes)
1860 // Creates the typical composite shape of the grounding foil:
1862 // +---------------------------------------------------------+
1864 // | +-----------+ +------------+ 10
1866 // | 3 /-----+ 4 +------+
1873 // This shape is used 4 times: two layers of glue, one in kapton
1874 // and one in aluminum, taking into account that the aliminum
1875 // layer has small differences in the size of some parts.
1877 // In order to overcome problems apparently due to a large number
1878 // of points, the shape creation is done according the following
1880 // 1) a TGeoBBox is created with a size right enough to contain
1881 // the whole shape (0-1-X-13)
1882 // 2) holes are defined as other TGeoBBox which are subtracted
1883 // from the main shape
1884 // 3) a TGeoXtru is defined connecting the points (0-->11-->0)
1885 // and is also subtracted from the main shape
1887 // The argument ("type") is used to choose between all these
1889 // - type = 0 --> kapton layer
1890 // - type = 1 --> aluminum layer
1891 // - type = 2 --> glue layer between support and GF
1892 // - type = 3 --> glue layer between GF and ladders
1893 // Returns: a TGeoCompositeShape which will then be used to shape
1894 // several volumes. Since TGeoXtru is used, the local reference
1895 // frame of this object has X horizontal and Y vertical w.r to
1896 // the shape drawn above, and Z axis going perpendicularly to the screen.
1897 // This is not the correct reference for the half stave, for which
1898 // the "long" dimension is Z and the "short" is X, while Y goes in
1899 // the direction of thickness. This will imply some rotations when
1900 // using the volumes created with this shape.
1902 // suffix to differentiate names
1905 // size of the virtual box containing exactly this volume
1906 length = fgkmm * 243.18;
1907 width = fgkmm * 15.95;
1909 length -= fgkmm * 0.4;
1910 width -= fgkmm * 0.4;
1911 } // end if itype==1
1914 sprintf(type,"Kap");
1917 sprintf(type,"Alu");
1920 sprintf(type,"Glue1");
1923 sprintf(type,"Glue2");
1926 // we divide the shape in several slices along the horizontal
1927 // direction (local X) here we define define the length of all
1928 // sectors (from leftmost to rightmost)
1930 Double_t sliceLength[] = { 140.71, 2.48, 26.78, 4.00,
1931 10.00, 24.40, 10.00, 24.81 };
1932 for (i = 0; i < 8; i++) sliceLength[i] *= fgkmm;
1934 sliceLength[0] -= fgkmm * 0.2;
1935 sliceLength[4] -= fgkmm * 0.2;
1936 sliceLength[5] += fgkmm * 0.4;
1937 sliceLength[6] -= fgkmm * 0.4;
1938 } // end if itype ==1
1940 // as shown in the drawing, we have four different widths
1941 // (along local Y) in this shape:
1942 Double_t widthMax = fgkmm * 15.95;
1943 Double_t widthMed1 = fgkmm * 15.00;
1944 Double_t widthMed2 = fgkmm * 11.00;
1945 Double_t widthMin = fgkmm * 4.40;
1947 widthMax -= fgkmm * 0.4;
1948 widthMed1 -= fgkmm * 0.4;
1949 widthMed2 -= fgkmm * 0.4;
1950 widthMin -= fgkmm * 0.4;
1951 } // end if itype==1
1953 // create the main shape
1954 TGeoBBox *shGroundFull = 0;
1955 shGroundFull = new TGeoBBox(Form("ITSSPDSHgFoil%sFull", type),
1956 0.5*length,0.5*width, 0.5*thickness);
1958 // create the polygonal shape to be subtracted to give the correct
1959 // shape to the borders its vertices are defined in sugh a way that
1960 // this polygonal will be placed in the correct place considered
1961 // that the origin of the local reference frame is in the center
1962 // of the main box: we fix the starting point at the lower-left
1963 // edge of the shape (point 12), and add all points in order,
1964 // following a clockwise rotation
1966 Double_t x[13], y[13];
1967 x[ 0] = -0.5 * length + sliceLength[0];
1968 y[ 0] = -0.5 * widthMax;
1970 x[ 1] = x[0] + sliceLength[1];
1971 y[ 1] = y[0] + (widthMax - widthMed1);
1973 x[ 2] = x[1] + sliceLength[2];
1976 x[ 3] = x[2] + sliceLength[3];
1977 y[ 3] = y[2] + (widthMed1 - widthMed2);
1979 x[ 4] = x[3] + sliceLength[4];
1983 y[ 5] = y[4] + (widthMed2 - widthMin);
1985 x[ 6] = x[5] + sliceLength[5];
1991 x[ 8] = x[7] + sliceLength[6];
1997 x[10] = x[9] + sliceLength[7] + 0.5;
2007 TGeoXtru *shGroundXtru = new TGeoXtru(2);
2008 shGroundXtru->SetName(Form("ITSSPDSHgFoil%sXtru", type));
2009 shGroundXtru->DefinePolygon(13, x, y);
2010 shGroundXtru->DefineSection(0, -thickness, 0., 0., 1.0);
2011 shGroundXtru->DefineSection(1, thickness, 0., 0., 1.0);
2013 // define a string which will express the algebric operations among volumes
2014 // and add the subtraction of this shape from the main one
2015 TString strComposite(Form("ITSSPDSHgFoil%sFull-(%s+", type,
2016 shGroundXtru->GetName()));
2018 // define the holes according to size information coming from drawings:
2019 Double_t holeLength = fgkmm * 10.00;
2020 Double_t holeWidth = fgkmm * 7.50;
2021 Double_t holeSepX0 = fgkmm * 7.05; // separation between center
2022 // of first hole and left border
2023 Double_t holeSepXC = fgkmm * 14.00; // separation between the centers
2024 // of two consecutive holes
2025 Double_t holeSepX1 = fgkmm * 15.42; // separation between centers of
2027 Double_t holeSepX2 = fgkmm * 22.00; // separation between centers of
2028 // 10th and 11th hole
2030 holeSepX0 -= fgkmm * 0.2;
2031 holeLength += fgkmm * 0.4;
2032 holeWidth += fgkmm * 0.4;
2033 } // end if itype==1
2035 sizes[0] = holeLength;
2036 sizes[1] = holeWidth;
2037 sizes[2] = holeSepX0;
2038 sizes[3] = holeSepXC;
2039 sizes[4] = holeSepX1;
2040 sizes[5] = holeSepX2;
2041 sizes[6] = fgkmm * 4.40;
2043 // X position of hole center (will change for each hole)
2044 Double_t holeX = -0.5*length;
2045 // Y position of center of all holes (= 4.4 mm from upper border)
2046 Double_t holeY = 0.5*(width - holeWidth) - widthMin;
2048 // create a shape for the holes (common)
2049 TGeoBBox *shHole = 0;
2050 shHole = new TGeoBBox(Form("ITSSPD%sGfoilHole", type),0.5*holeLength,
2051 0.5*holeWidth, thickness);
2053 // insert the holes in the XTRU shape:
2054 // starting from the first value of X, they are simply
2055 // shifted along this axis
2057 TGeoTranslation *transHole[11];
2058 for (i = 0; i < 11; i++) {
2059 // set the position of the hole, depending on index
2070 } // end if else if's
2071 //cout << i << " --> X = " << holeX << endl;
2072 sprintf(name,"ITSSPDTRgFoil%sHole%d", type, i);
2073 transHole[i] = new TGeoTranslation(name, holeX, holeY, 0.0);
2074 transHole[i]->RegisterYourself();
2075 strComposite.Append(Form("ITSSPD%sGfoilHole:%s", type, name));
2076 if (i < 10) strComposite.Append("+"); else strComposite.Append(")");
2079 // create composite shape
2080 TGeoCompositeShape *shGround = new TGeoCompositeShape(
2081 Form("ITSSPDSHgFoil%s", type), strComposite.Data());
2085 //______________________________________________________________________
2086 TGeoVolume* AliITSv11GeometrySPD::CreateGroundingFoil(Bool_t isRight,
2087 TArrayD &sizes, TGeoManager *mgr)
2090 // Create a volume containing all parts of the grounding foil a
2091 // for a half-stave.
2092 // It consists of 4 layers with the same shape but different thickness:
2093 // 1) a layer of glue
2094 // 2) the aluminum layer
2095 // 3) the kapton layer
2096 // 4) another layer of glue
2099 // 1: a boolean value to know if it is the grounding foir for
2100 // the right or left side
2101 // 2: a TArrayD which will contain the dimension of the container box:
2102 // - size[0] = length along Z (the beam line direction)
2103 // - size[1] = the 'width' of the stave, which defines, together
2104 // with Z, the plane of the carbon fiber support
2105 // - size[2] = 'thickness' (= the direction along which all
2106 // stave components are superimposed)
2107 // 3: the TGeoManager
2109 // The return value is a TGeoBBox volume containing all grounding
2111 // to avoid strange behaviour of the geometry manager,
2112 // create a suffix to be used in the names of all shapes
2115 if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
2116 // this volume will be created in order to ease its placement in
2117 // the half-stave; then, it is added here the small distance of
2118 // the "central" edge of each volume from the Z=0 plane in the stave
2119 // reference (which coincides with ALICE one)
2120 Double_t dist = fgkmm * 0.71;
2123 TGeoMedium *medKap = GetMedium("SPD KAPTON(POLYCH2)$", mgr);
2124 TGeoMedium *medAlu = GetMedium("AL$", mgr);
2125 TGeoMedium *medGlue = GetMedium("EPOXY$", mgr); //??? GLUE_GF_SUPPORT
2127 // compute the volume shapes (thicknesses change from one to the other)
2128 Double_t kpLength, kpWidth, alLength, alWidth;
2129 TArrayD kpSize, alSize, glSize;
2130 Double_t kpThickness = fgkmm * 0.04;
2131 Double_t alThickness = fgkmm * 0.01;
2132 //cout << "AL THICKNESS" << alThickness << endl;
2133 //Double_t g0Thickness = fgkmm * 0.1175 - fgkGapHalfStave;
2134 //Double_t g1Thickness = fgkmm * 0.1175 - fgkGapLadder;
2135 Double_t g0Thickness = fgkmm * 0.1275 - fgkGapHalfStave;
2136 Double_t g1Thickness = fgkmm * 0.1275 - fgkGapLadder;
2137 TGeoCompositeShape *kpShape = CreateGroundingFoilShape(0,kpLength,kpWidth,
2138 kpThickness, kpSize);
2139 TGeoCompositeShape *alShape = CreateGroundingFoilShape(1,alLength,alWidth,
2140 alThickness, alSize);
2141 TGeoCompositeShape *g0Shape = CreateGroundingFoilShape(2,kpLength,kpWidth,
2142 g0Thickness, glSize);
2143 TGeoCompositeShape *g1Shape = CreateGroundingFoilShape(3,kpLength,kpWidth,
2144 g1Thickness, glSize);
2145 // create the component volumes and register their sizes in the
2146 // passed arrays for readability reasons, some reference variables
2147 // explicit the meaning of the array slots
2148 TGeoVolume *kpVol = new TGeoVolume(Form("ITSSPDgFoilKap%s",suf),
2150 TGeoVolume *alVol = new TGeoVolume(Form("ITSSPDgFoilAlu%s",suf),
2152 TGeoVolume *g0Vol = new TGeoVolume(Form("ITSSPDgFoilGlue%s",suf),
2154 TGeoVolume *g1Vol = new TGeoVolume(Form("ITSSPDgFoilGlue%s",suf),
2156 // set colors for the volumes
2157 kpVol->SetLineColor(kRed);
2158 alVol->SetLineColor(kGray);
2159 g0Vol->SetLineColor(kYellow);
2160 g1Vol->SetLineColor(kYellow);
2161 // create references for the final size object
2162 if (sizes.GetSize() != 3) sizes.Set(3);
2163 Double_t &fullThickness = sizes[0];
2164 Double_t &fullLength = sizes[1];
2165 Double_t &fullWidth = sizes[2];
2166 // kapton leads the larger dimensions of the foil
2167 // (including the cited small distance from Z=0 stave reference plane)
2168 // the thickness is the sum of the ones of all components
2169 fullLength = kpLength + dist;
2170 fullWidth = kpWidth;
2171 fullThickness = kpThickness + alThickness + g0Thickness + g1Thickness;
2172 // create the container
2173 TGeoMedium *air = GetMedium("AIR$", mgr);
2174 TGeoVolume *container = mgr->MakeBox(Form("ITSSPDgFOIL-%s",suf),
2175 air, 0.5*fullThickness, 0.5*fullWidth, 0.5*fullLength);
2176 // create the common correction rotation (which depends of what side
2178 TGeoRotation *rotCorr = new TGeoRotation(*gGeoIdentity);
2179 if (isRight) rotCorr->RotateY(90.0);
2180 else rotCorr->RotateY(-90.0);
2181 // compute the translations, which are in the length and
2182 // thickness directions
2183 Double_t x, y, z, shift = 0.0;
2184 if (isRight) shift = dist;
2186 x = -0.5*(fullThickness - g0Thickness);
2187 z = 0.5*(fullLength - kpLength) - shift;
2188 TGeoCombiTrans *glTrans0 = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2190 x += 0.5*(g0Thickness + kpThickness);
2191 TGeoCombiTrans *kpTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2193 x += 0.5*(kpThickness + alThickness);
2194 z = 0.5*(fullLength - alLength) - shift - 0.5*(kpLength - alLength);
2195 TGeoCombiTrans *alTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2197 x += 0.5*(alThickness + g1Thickness);
2198 z = 0.5*(fullLength - kpLength) - shift;
2199 TGeoCombiTrans *glTrans1 = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2201 //cout << fgkGapHalfStave << endl;
2202 //cout << g0Thickness << endl;
2203 //cout << kpThickness << endl;
2204 //cout << alThickness << endl;
2205 //cout << g1Thickness << endl;
2208 container->SetLineColor(kMagenta-10);
2209 container->AddNode(kpVol, 1, kpTrans);
2210 container->AddNode(alVol, 1, alTrans);
2211 container->AddNode(g0Vol, 1, glTrans0);
2212 container->AddNode(g1Vol, 2, glTrans1);
2213 // to add the grease we remember the sizes of the holes, stored as
2214 // additional parameters in the kapton layer size:
2215 // - sizes[3] = hole length
2216 // - sizes[4] = hole width
2217 // - sizes[5] = position of first hole center
2218 // - sizes[6] = standard separation between holes
2219 // - sizes[7] = separation between 5th and 6th hole
2220 // - sizes[8] = separation between 10th and 11th hole
2221 // - sizes[9] = separation between the upper hole border and
2223 Double_t holeLength = kpSize[0];
2224 Double_t holeWidth = kpSize[1];
2225 Double_t holeFirstZ = kpSize[2];
2226 Double_t holeSepZ = kpSize[3];
2227 Double_t holeSep5th6th = kpSize[4];
2228 Double_t holeSep10th11th = kpSize[5];
2229 Double_t holeSepY = kpSize[6];
2231 // Grease has not been defined to date. Need much more information
2232 // no this material!
2233 TGeoMedium *grease = GetMedium("SPD KAPTON(POLYCH2)$", mgr); // ??? GREASE
2234 TGeoVolume *hVol = mgr->MakeBox("ITSSPDGrease", grease,
2235 0.5*fullThickness, 0.5*holeWidth, 0.5*holeLength);
2236 hVol->SetLineColor(kBlue);
2237 // displacement of volumes in the container
2238 Int_t idx = 1; // copy numbers start from 1.
2240 y = 0.5*(fullWidth - holeWidth) - holeSepY;
2241 if (isRight) z = holeFirstZ - 0.5*fullLength + dist;
2242 else z = 0.5*fullLength - holeFirstZ - dist;
2243 for (Int_t i = 0; i < 11; i++) {
2244 TGeoTranslation *t = 0;
2245 t = new TGeoTranslation(x, y, -z);
2246 container->AddNode(hVol, idx++, t);
2247 if (i < 4) shift = holeSepZ;
2248 else if (i == 4) shift = holeSep5th6th;
2249 else if (i < 9) shift = holeSepZ;
2250 else shift = holeSep10th11th;
2251 if (isRight) z += shift;
2256 //___________________________________________________________________
2257 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateMCM(Bool_t isRight,
2258 TArrayD &sizes, TGeoManager *mgr) const
2261 // Create a TGeoAssembly containing all the components of the MCM.
2262 // The TGeoVolume container is rejected due to the possibility of overlaps
2263 // when placing this object on the carbon fiber sector.
2264 // The assembly contains:
2265 // - the thin part of the MCM (integrated circuit)
2266 // - the MCM chips (specifications from EDMS)
2267 // - the cap which covers the zone where chips are bound to MCM
2269 // The local reference frame of this assembly is defined in such a way
2270 // that all volumes are contained in a virtual box whose center
2271 // is placed exactly in the middle of the occupied space w.r to all
2272 // directions. This will ease the positioning of this object in the
2273 // half-stave. The sizes of this virtual box are stored in
2274 // the array passed by reference.
2277 // - a boolean flag to know if this is the "left" or "right" MCM, when
2278 // looking at the stave from above (i.e. the direction from which
2279 // one sees bus over ladders over grounding foil) and keeping the
2280 // continuous border in the upper part, one sees the thicker part
2281 // on the left or right.
2282 // - an array passed by reference which will contain the size of
2283 // the virtual container.
2284 // - a pointer to the used TGeoManager.
2287 // to distinguish the "left" and "right" objects, a suffix is created
2289 if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
2292 TGeoMedium *medBase = GetMedium("SPD KAPTON(POLYCH2)$",mgr);// ??? MCM BASE
2293 TGeoMedium *medChip = GetMedium("SPD SI CHIP$",mgr);
2294 TGeoMedium *medCap = GetMedium("AL$",mgr);
2296 // The shape of the MCM is divided into 3 sectors with different
2297 // widths (Y) and lengths (X), like in this sketch:
2300 // +---------------------+-----------------------------------+
2302 // | 6 sect 1 /-------------------+
2303 // | sect 0 /--------------/ 3
2304 // +--------------------/ 5
2307 // the inclination of all oblique borders (6-7, 4-5) is always 45 degrees.
2308 // From drawings we can parametrize the dimensions of all these sectors,
2309 // then the shape of this part of the MCM is implemented as a
2310 // TGeoXtru centerd in the virtual XY space.
2311 // The first step is definig the relevant sizes of this shape:
2313 Double_t mcmThickness = fgkmm * 0.35;
2314 Double_t sizeXtot = fgkmm * 105.6; // total distance (0-2)
2315 // resp. 7-8, 5-6 and 3-4
2316 Double_t sizeXsector[3] = {fgkmm * 28.4, fgkmm * 41.4, fgkmm * 28.8};
2317 // resp. 0-8, 1-6 and 2-3
2318 Double_t sizeYsector[3] = {fgkmm * 15.0, fgkmm * 11.0, fgkmm * 8.0};
2319 Double_t sizeSep01 = fgkmm * 4.0; // x(6)-x(7)
2320 Double_t sizeSep12 = fgkmm * 3.0; // x(4)-x(5)
2322 // define sizes of chips (last is the thickest)
2323 Double_t chipLength[5] = { 4.00, 6.15, 3.85, 5.60, 18.00 };
2324 Double_t chipWidth[5] = { 3.00, 4.10, 3.85, 5.60, 5.45 };
2325 Double_t chipThickness[5] = { 0.60, 0.30, 0.30, 1.00, 1.20 };
2327 name[0] = "ITSSPDanalog";
2328 name[1] = "ITSSPDpilot";
2329 name[2] = "ITSSPDgol";
2330 name[3] = "ITSSPDrx40";
2331 name[4] = "ITSSPDoptical";
2332 Color_t color[5] = { kCyan, kGreen, kYellow, kBlue, kOrange };
2334 // define the sizes of the cover
2335 Double_t capThickness = fgkmm * 0.3;
2336 Double_t capHeight = fgkmm * 1.7;
2338 // compute the total size of the virtual container box
2340 Double_t &thickness = sizes[0];
2341 Double_t &length = sizes[1];
2342 Double_t &width = sizes[2];
2344 width = sizeYsector[0];
2345 thickness = mcmThickness + capHeight;
2347 // define all the relevant vertices of the polygon
2348 // which defines the transverse shape of the MCM.
2349 // These values are used to several purposes, and
2350 // for each one, some points must be excluded
2351 Double_t xRef[9], yRef[9];
2352 xRef[0] = -0.5*sizeXtot;
2353 yRef[0] = 0.5*sizeYsector[0];
2354 xRef[1] = xRef[0] + sizeXsector[0] + sizeSep01;
2359 yRef[3] = yRef[2] - sizeYsector[2];
2360 xRef[4] = xRef[3] - sizeXsector[2];
2362 xRef[5] = xRef[4] - sizeSep12;
2363 yRef[5] = yRef[4] - sizeSep12;
2364 xRef[6] = xRef[5] - sizeXsector[1];
2366 xRef[7] = xRef[6] - sizeSep01;
2367 yRef[7] = yRef[6] - sizeSep01;
2371 // the above points are defined for the "right" MCM (if ve view the
2372 // stave from above) in order to change to the "left" one, we must
2373 // change the sign to all X values:
2374 if (isRight) for (i = 0; i < 9; i++) xRef[i] = -xRef[i];
2376 // the shape of the MCM and glue layer are done excluding point 1,
2377 // which is not necessary and cause the geometry builder to get confused
2379 Double_t xBase[8], yBase[8];
2380 for (i = 0; i < 9; i++) {
2381 if (i == 1) continue;
2387 // the MCM cover is superimposed over the zones 1 and 2 only
2388 Double_t xCap[6], yCap[6];
2390 for (i = 1; i <= 6; i++) {
2396 // define positions of chips,
2397 // which must be added to the bottom-left corner of MCM
2398 // and divided by 1E4;
2399 Double_t chipX[5], chipY[5];
2423 for (i = 0; i < 5; i++) {
2424 chipX[i] *= 0.00001;
2425 chipY[i] *= 0.00001;
2427 chipX[i] += xRef[3];
2428 chipY[i] += yRef[3];
2430 chipX[i] += xRef[8];
2431 chipY[i] += yRef[8];
2432 } // end for isRight
2433 chipLength[i] *= fgkmm;
2434 chipWidth[i] *= fgkmm;
2435 chipThickness[i] *= fgkmm;
2438 // create shapes for MCM
2440 TGeoXtru *shBase = new TGeoXtru(2);
2441 z1 = -0.5*thickness;
2442 z2 = z1 + mcmThickness;
2443 shBase->DefinePolygon(8, xBase, yBase);
2444 shBase->DefineSection(0, z1, 0., 0., 1.0);
2445 shBase->DefineSection(1, z2, 0., 0., 1.0);
2447 // create volumes of MCM
2448 TGeoVolume *volBase = new TGeoVolume("ITSSPDbase", shBase, medBase);
2449 volBase->SetLineColor(kRed);
2451 // to create the border of the MCM cover, it is required the
2452 // subtraction of two shapes the outer is created using the
2453 // reference points defined here
2454 TGeoXtru *shCapOut = new TGeoXtru(2);
2455 shCapOut->SetName(Form("ITSSPDshCAPOUT%s", suf));
2457 z2 = z1 + capHeight - capThickness;
2458 shCapOut->DefinePolygon(6, xCap, yCap);
2459 shCapOut->DefineSection(0, z1, 0., 0., 1.0);
2460 shCapOut->DefineSection(1, z2, 0., 0., 1.0);
2461 // the inner is built similarly but subtracting the thickness
2463 Double_t xin[6], yin[6];
2466 cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
2467 xin[0] = xCap[0] + capThickness;
2468 yin[0] = yCap[0] - capThickness;
2469 xin[1] = xCap[1] - capThickness;
2472 yin[2] = yCap[2] + capThickness;
2473 xin[3] = xCap[3] - capThickness*cs;
2475 xin[4] = xin[3] - sizeSep12;
2476 yin[4] = yCap[4] + capThickness;
2481 cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
2482 xin[0] = xCap[0] - capThickness;
2483 yin[0] = yCap[0] - capThickness;
2484 xin[1] = xCap[1] + capThickness;
2487 yin[2] = yCap[2] + capThickness;
2488 xin[3] = xCap[3] - capThickness*cs;
2490 xin[4] = xin[3] + sizeSep12;
2491 yin[4] = yCap[4] + capThickness;
2494 } // end if !isRight
2495 TGeoXtru *shCapIn = new TGeoXtru(2);
2496 shCapIn->SetName(Form("ITSSPDshCAPIN%s", suf));
2497 shCapIn->DefinePolygon(6, xin, yin);
2498 shCapIn->DefineSection(0, z1 - 0.01, 0., 0., 1.0);
2499 shCapIn->DefineSection(1, z2 + 0.01, 0., 0., 1.0);
2501 TGeoCompositeShape *shCapBorder = new TGeoCompositeShape(
2502 Form("ITSSPDshBORDER%s", suf),
2503 Form("%s-%s", shCapOut->GetName(),
2504 shCapIn->GetName()));
2506 TGeoVolume *volCapBorder = new TGeoVolume("ITSSPDcapBoarder",
2507 shCapBorder,medCap);
2508 volCapBorder->SetLineColor(kGreen);
2509 // finally, we create the top of the cover, which has the same
2510 // shape of outer border and a thickness equal of the one othe
2512 TGeoXtru *shCapTop = new TGeoXtru(2);
2514 z2 = z1 + capThickness;
2515 shCapTop->DefinePolygon(6, xCap, yCap);
2516 shCapTop->DefineSection(0, z1, 0., 0., 1.0);
2517 shCapTop->DefineSection(1, z2, 0., 0., 1.0);
2518 TGeoVolume *volCapTop = new TGeoVolume("ITSSPDcapTop", shCapTop, medCap);
2519 volCapTop->SetLineColor(kBlue);
2521 // create container assembly with right suffix
2522 TGeoVolumeAssembly *mcmAssembly = new TGeoVolumeAssembly(
2523 Form("ITSSPDmcm%s", suf));
2526 mcmAssembly->AddNode(volBase, 1, gGeoIdentity);
2528 for (i = 0; i < 5; i++) {
2529 TGeoVolume *box = gGeoManager->MakeBox(name[i],medChip,
2530 0.5*chipLength[i], 0.5*chipWidth[i], 0.5*chipThickness[i]);
2531 TGeoTranslation *tr = new TGeoTranslation(chipX[i],chipY[i],
2532 0.5*(-thickness + chipThickness[i]) + mcmThickness);
2533 box->SetLineColor(color[i]);
2534 mcmAssembly->AddNode(box, 1, tr);
2537 mcmAssembly->AddNode(volCapBorder, 1, gGeoIdentity);
2539 mcmAssembly->AddNode(volCapTop, 1, gGeoIdentity);
2545 //__________________________________________________________________________________________
2546 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBus
2547 (Bool_t isRight, TArrayD &sizes, TGeoManager *mgr) const
2550 // The pixel bus is implemented as a TGeoBBox with some objects on it,
2551 // which could affect the particle energy loss.
2553 // In order to avoid confusion, the bus is directly displaced
2554 // according to the axis orientations which are used in the final stave:
2555 // X --> thickness direction
2556 // Y --> width direction
2557 // Z --> length direction
2564 TGeoMedium *medBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
2565 TGeoMedium *medPt1000 = GetMedium("CERAMICS$",mgr); // ??? PT1000
2567 TGeoMedium *medCap = GetMedium("SDD X7R capacitors$",mgr);
2569 // TGeoMedium *medRes = GetMedium("SDD X7R capacitors$",mgr);
2570 TGeoMedium *medRes = GetMedium("ALUMINUM$",mgr);
2571 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2572 // ** SIZES & POSITIONS **
2573 Double_t busLength = 170.501 * fgkmm; // length of plane part
2574 Double_t busWidth = 13.800 * fgkmm; // width
2575 Double_t busThickness = 0.280 * fgkmm; // thickness
2576 Double_t pt1000Length = fgkmm * 1.50;
2577 Double_t pt1000Width = fgkmm * 3.10;
2578 Double_t pt1000Thickness = fgkmm * 0.60;
2579 Double_t pt1000Y, pt1000Z[10];// position of the pt1000's along the bus
2580 Double_t capLength = fgkmm * 2.55;
2581 Double_t capWidth = fgkmm * 1.50;
2582 Double_t capThickness = fgkmm * 1.35;
2583 Double_t capY[2], capZ[2];
2585 Double_t resLength = fgkmm * 2.20;
2586 Double_t resWidth = fgkmm * 0.80;
2587 Double_t resThickness = fgkmm * 0.35;
2588 Double_t resY[2], resZ[2];
2590 Double_t extThickness = fgkmm * 0.25;
2591 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2592 Double_t ext2Length = fgkmm * (285.0 - ext1Length + extThickness);
2593 Double_t extWidth = fgkmm * 11.0;
2594 Double_t extHeight = fgkmm * 2.5;
2597 // position of pt1000, resistors and capacitors depends on the
2598 // bus if it's left or right one
2601 pt1000Z[0] = 66160.;
2602 pt1000Z[1] = 206200.;
2603 pt1000Z[2] = 346200.;
2604 pt1000Z[3] = 486200.;
2605 pt1000Z[4] = 626200.;
2606 pt1000Z[5] = 776200.;
2607 pt1000Z[6] = 916200.;
2608 pt1000Z[7] = 1056200.;
2609 pt1000Z[8] = 1196200.;
2610 pt1000Z[9] = 1336200.;
2621 pt1000Z[0] = 319700.;
2622 pt1000Z[1] = 459700.;
2623 pt1000Z[2] = 599700.;
2624 pt1000Z[3] = 739700.;
2625 pt1000Z[4] = 879700.;
2626 pt1000Z[5] = 1029700.;
2627 pt1000Z[6] = 1169700.;
2628 pt1000Z[7] = 1309700.;
2629 pt1000Z[8] = 1449700.;
2630 pt1000Z[9] = 1589700.;
2641 pt1000Y *= 1E-4 * fgkmm;
2642 for (i = 0; i < 10; i++) {
2643 pt1000Z[i] *= 1E-4 * fgkmm;
2645 capZ[i] *= 1E-4 * fgkmm;
2646 capY[i] *= 1E-4 * fgkmm;
2647 resZ[i] *= 1E-4 * fgkmm;
2648 resY[i] *= 1E-4 * fgkmm;
2652 Double_t &fullLength = sizes[1];
2653 Double_t &fullWidth = sizes[2];
2654 Double_t &fullThickness = sizes[0];
2655 fullLength = busLength;
2656 fullWidth = busWidth;
2657 // add the thickness of the thickest component on bus (capacity)
2658 fullThickness = busThickness + capThickness;
2660 TGeoVolumeAssembly *container = new TGeoVolumeAssembly("PixelBus");
2661 TGeoVolume *bus = mgr->MakeBox("Bus", medBus, 0.5*busThickness, 0.5*busWidth, 0.5*busLength);
2662 TGeoVolume *pt1000 = mgr->MakeBox("PT1000", medPt1000, 0.5*pt1000Thickness, 0.5*pt1000Width, 0.5*pt1000Length);
2663 TGeoVolume *res = mgr->MakeBox("Resistor", medRes, 0.5*resThickness, 0.5*resWidth, 0.5*resLength);
2664 TGeoVolume *cap = mgr->MakeBox("Capacitor", medCap, 0.5*capThickness, 0.5*capWidth, 0.5*capLength);
2665 TGeoVolume *ext1 = mgr->MakeBox("Extender1", medExt, 0.5*extThickness, 0.5*extWidth, 0.5*ext1Length);
2666 TGeoVolume *ext2 = mgr->MakeBox("Extender2", medExt, 0.5*extHeight - extThickness, 0.5*extWidth, 0.5*extThickness);
2667 TGeoVolume *ext3 = mgr->MakeBox("Extender3", medExt, extThickness, 0.5*extWidth, 0.5*ext2Length);
2668 bus->SetLineColor(kYellow + 2);
2669 pt1000->SetLineColor(kGreen + 3);
2670 res->SetLineColor(kRed + 1);
2671 cap->SetLineColor(kBlue - 7);
2672 ext1->SetLineColor(kGray);
2673 ext2->SetLineColor(kGray);
2674 ext3->SetLineColor(kGray);
2676 // ** MOVEMENTS AND POSITIONEMENT **
2678 TGeoTranslation *trBus = new TGeoTranslation(0.5 * (busThickness -
2679 fullThickness), 0.0, 0.0);
2680 container->AddNode(bus, 0, trBus);
2681 Double_t zRef, yRef, x, y, z;
2683 zRef = -0.5*fullLength;
2684 yRef = -0.5*fullWidth;
2686 zRef = -0.5*fullLength;
2687 yRef = -0.5*fullWidth;
2690 x = 0.5*(pt1000Thickness - fullThickness) + busThickness;
2691 for (i = 0; i < 10; i++) {
2693 z = zRef + pt1000Z[i];
2694 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2695 container->AddNode(pt1000, i, tr);
2698 x = 0.5*(capThickness - fullThickness) + busThickness;
2699 for (i = 0; i < 2; i++) {
2702 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2703 container->AddNode(cap, i, tr);
2706 x = 0.5*(resThickness - fullThickness) + busThickness;
2707 for (i = 0; i < 2; i++) {
2710 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2711 container->AddNode(res, i, tr);
2715 y = 0.5 * (-fullWidth + extWidth);
2716 z = 0.5 * (-fullLength + fgkmm * 10.0);
2719 y = 0.5 * (fullWidth - extWidth);
2720 z = 0.5 * ( fullLength - fgkmm * 10.0);
2722 x = 0.5 * (extThickness - fullThickness) + busThickness;
2723 //y = 0.5 * (fullWidth - extWidth);
2724 TGeoTranslation *trExt1 = new TGeoTranslation(x, y, z);
2726 z -= 0.5 * (ext1Length - extThickness);
2729 z += 0.5 * (ext1Length - extThickness);
2731 x += 0.5*(extHeight - extThickness);
2732 TGeoTranslation *trExt2 = new TGeoTranslation(x, y, z);
2734 z -= 0.5 * (ext2Length - extThickness);
2737 z += 0.5 * (ext2Length - extThickness);
2739 x += 0.5*(extHeight - extThickness) + extThickness;
2740 TGeoTranslation *trExt3 = new TGeoTranslation(x, y, z);
2741 container->AddNode(ext1, 0, trExt1);
2742 container->AddNode(ext2, 0, trExt2);
2743 container->AddNode(ext3, 0, trExt3);
2746 sizes[3] = yRef + pt1000Y;
2747 sizes[4] = zRef + pt1000Z[2];
2748 sizes[5] = zRef + pt1000Z[7];
2754 //______________________________________________________________________
2755 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBus
2756 (Bool_t isRight, Int_t ilayer, TArrayD &sizes, TGeoManager *mgr) const
2759 // The pixel bus is implemented as a TGeoBBox with some objects on it,
2760 // which could affect the particle energy loss.
2762 // In order to avoid confusion, the bus is directly displaced
2763 // according to the axis orientations which are used in the final stave:
2764 // X --> thickness direction
2765 // Y --> width direction
2766 // Z --> length direction
2769 // ** CRITICAL CHECK ******************************************************
2770 // layer number can be ONLY 1 or 2
2771 if (ilayer != 1 && ilayer != 2) AliFatal("Layer number MUST be 1 or 2");
2775 TGeoMedium *medBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
2776 TGeoMedium *medPt1000 = GetMedium("CERAMICS$",mgr); // ??? PT1000
2778 TGeoMedium *medCap = GetMedium("SDD X7R capacitors$",mgr);
2780 //TGeoMedium *medRes = GetMedium("SDD X7R capacitors$",mgr);
2781 TGeoMedium *medRes = GetMedium("ALUMINUM$",mgr);
2782 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2783 // ** SIZES & POSITIONS **
2784 Double_t busLength = 170.501 * fgkmm; // length of plane part
2785 Double_t busWidth = 13.800 * fgkmm; // width
2786 Double_t busThickness = 0.280 * fgkmm; // thickness
2787 Double_t pt1000Length = fgkmm * 1.50;
2788 Double_t pt1000Width = fgkmm * 3.10;
2789 Double_t pt1000Thickness = fgkmm * 0.60;
2790 Double_t pt1000Y, pt1000Z[10];// position of the pt1000's along the bus
2791 Double_t capLength = fgkmm * 2.55;
2792 Double_t capWidth = fgkmm * 1.50;
2793 Double_t capThickness = fgkmm * 1.35;
2794 Double_t capY[2], capZ[2];
2796 Double_t resLength = fgkmm * 2.20;
2797 Double_t resWidth = fgkmm * 0.80;
2798 Double_t resThickness = fgkmm * 0.35;
2799 Double_t resY[2], resZ[2];
2801 Double_t extThickness = fgkmm * 0.25;
2802 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2803 Double_t ext2Length = fgkmm * 284.0 - ext1Length + extThickness;
2804 Double_t extWidth = fgkmm * 11.0;
2805 Double_t extHeight = fgkmm * 2.5;
2807 // position of pt1000, resistors and capacitors depends on the
2808 // bus if it's left or right one
2811 pt1000Z[0] = 66160.;
2812 pt1000Z[1] = 206200.;
2813 pt1000Z[2] = 346200.;
2814 pt1000Z[3] = 486200.;
2815 pt1000Z[4] = 626200.;
2816 pt1000Z[5] = 776200.;
2817 pt1000Z[6] = 916200.;
2818 pt1000Z[7] = 1056200.;
2819 pt1000Z[8] = 1196200.;
2820 pt1000Z[9] = 1336200.;
2831 pt1000Z[0] = 319700.;
2832 pt1000Z[1] = 459700.;
2833 pt1000Z[2] = 599700.;
2834 pt1000Z[3] = 739700.;
2835 pt1000Z[4] = 879700.;
2836 pt1000Z[5] = 1029700.;
2837 pt1000Z[6] = 1169700.;
2838 pt1000Z[7] = 1309700.;
2839 pt1000Z[8] = 1449700.;
2840 pt1000Z[9] = 1589700.;
2851 pt1000Y *= 1E-4 * fgkmm;
2852 for (i = 0; i < 10; i++) {
2853 pt1000Z[i] *= 1E-4 * fgkmm;
2855 capZ[i] *= 1E-4 * fgkmm;
2856 capY[i] *= 1E-4 * fgkmm;
2857 resZ[i] *= 1E-4 * fgkmm;
2858 resY[i] *= 1E-4 * fgkmm;
2862 Double_t &fullLength = sizes[1];
2863 Double_t &fullWidth = sizes[2];
2864 Double_t &fullThickness = sizes[0];
2865 fullLength = busLength;
2866 fullWidth = busWidth;
2867 // add the thickness of the thickest component on bus (capacity)
2868 fullThickness = busThickness + capThickness;
2871 TGeoVolumeAssembly *container = new TGeoVolumeAssembly("ITSSPDpixelBus");
2872 TGeoVolume *bus = mgr->MakeBox("ITSSPDbus", medBus, 0.5*busThickness,
2873 0.5*busWidth, 0.5*busLength);
2874 TGeoVolume *pt1000 = mgr->MakeBox("ITSSPDpt1000",medPt1000,
2875 0.5*pt1000Thickness,0.5*pt1000Width, 0.5*pt1000Length);
2876 TGeoVolume *res = mgr->MakeBox("ITSSPDresistor", medRes, 0.5*resThickness,
2877 0.5*resWidth, 0.5*resLength);
2878 TGeoVolume *cap = mgr->MakeBox("ITSSPDcapacitor", medCap, 0.5*capThickness,
2879 0.5*capWidth, 0.5*capLength);
2881 TGeoVolume *ext1 = mgr->MakeBox("Extender1", medExt, 0.5*extThickness, 0.5*extWidth, 0.5*ext1Length);
2882 TGeoVolume *ext2 = mgr->MakeBox("Extender2", medExt, 0.5*extHeight - 2.*extThickness, 0.5*extWidth, 0.5*extThickness);
2883 TGeoVolume *ext3 = mgr->MakeBox("Extender3", medExt, 0.5*extThickness, 0.5*(extWidth-0.8*fgkmm), 0.5*ext2Length + extThickness); // Hardcode fix of a small overlap
2884 bus->SetLineColor(kYellow + 2);
2885 pt1000->SetLineColor(kGreen + 3);
2886 res->SetLineColor(kRed + 1);
2887 cap->SetLineColor(kBlue - 7);
2888 ext1->SetLineColor(kGray);
2889 ext2->SetLineColor(kGray);
2890 ext3->SetLineColor(kGray);
2892 // ** MOVEMENTS AND POSITIONEMENT **
2894 TGeoTranslation *trBus = new TGeoTranslation(0.5 * (busThickness -
2895 fullThickness), 0.0, 0.0);
2896 container->AddNode(bus, 1, trBus);
2897 Double_t zRef, yRef, x, y, z;
2899 zRef = -0.5*fullLength;
2900 yRef = -0.5*fullWidth;
2902 zRef = -0.5*fullLength;
2903 yRef = -0.5*fullWidth;
2906 x = 0.5*(pt1000Thickness - fullThickness) + busThickness;
2907 for (i = 0; i < 10; i++) {
2909 z = zRef + pt1000Z[i];
2910 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2911 container->AddNode(pt1000, i+1, tr);
2914 x = 0.5*(capThickness - fullThickness) + busThickness;
2915 for (i = 0; i < 2; i++) {
2918 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2919 container->AddNode(cap, i+1, tr);
2922 x = 0.5*(resThickness - fullThickness) + busThickness;
2923 for (i = 0; i < 2; i++) {
2926 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2927 container->AddNode(res, i+1, tr);
2933 y = 0.5 * (fullWidth - extWidth) - 0.1;
2934 z = 0.5 * (-fullLength + fgkmm * 10.0);
2937 y = 0.5 * (fullWidth - extWidth) - 0.1;
2938 z = 0.5 * ( fullLength - fgkmm * 10.0);
2943 y = -0.5 * (fullWidth - extWidth);
2944 z = 0.5 * (-fullLength + fgkmm * 10.0);
2947 y = -0.5 * (fullWidth - extWidth);
2948 z = 0.5 * ( fullLength - fgkmm * 10.0);
2951 x = 0.5 * (extThickness - fullThickness) + busThickness;
2952 //y = 0.5 * (fullWidth - extWidth);
2953 TGeoTranslation *trExt1 = new TGeoTranslation(x, y, z);
2955 z -= 0.5 * (ext1Length - extThickness);
2958 z += 0.5 * (ext1Length - extThickness);
2960 x += 0.5*(extHeight - 3.*extThickness);
2961 TGeoTranslation *trExt2 = new TGeoTranslation(x, y, z);
2963 z -= 0.5 * (ext2Length - extThickness) + 2.5*extThickness;
2966 z += 0.5 * (ext2Length - extThickness) + 2.5*extThickness;
2968 x += 0.5*(extHeight - extThickness) - 2.*extThickness;
2969 TGeoTranslation *trExt3 = new TGeoTranslation(x, y, z);
2970 container->AddNode(ext1, 0, trExt1);
2971 container->AddNode(ext2, 0, trExt2);
2972 container->AddNode(ext3, 0, trExt3);
2974 sizes[3] = yRef + pt1000Y;
2975 sizes[4] = zRef + pt1000Z[2];
2976 sizes[5] = zRef + pt1000Z[7];
2981 //______________________________________________________________________
2982 TList* AliITSv11GeometrySPD::CreateConeModule(TGeoManager *mgr) const
2984 TGeoMedium *medInox = GetMedium("INOX$",mgr);
2985 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2986 TGeoMedium *medPlate = GetMedium("SPD C (M55J)$", mgr);
2988 Double_t extThickness = fgkmm * 0.25;
2989 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2990 Double_t ext2Length = fgkmm * (285.0 - ext1Length + extThickness);
2992 Double_t cableThickness = 1.5 * fgkmm;
2993 Double_t cableL1 = 350.0 * fgkmm - extThickness - ext1Length - ext2Length;
2994 Double_t cableL2 = 340.0 * fgkmm;
2995 //Double_t cableL3 = 570.0 * fgkmm;
2996 Double_t cableL3 = 57.0 * fgkmm;
2997 Double_t cableW1 = 11.0 * fgkmm;
2998 Double_t cableW2 = 30.0 * fgkmm;
2999 Double_t cableW3 = 50.0 * fgkmm;
3001 Double_t mcmThickness = 1.2 *fgkmm;
3002 Double_t mcmLength = cableL1 + cableL2 + cableL3;
3003 Double_t mcmWidth = cableW1;
3005 Double_t plateLength = 200.0 * fgkmm;
3006 Double_t plateWidth = 50.0 * fgkmm;
3007 Double_t plateThickness = 5.0 * fgkmm;
3009 Double_t x[12], y[12];
3012 y[0] = 0.0 + 0.5 * cableW1;
3014 x[1] = x[0] + cableL1 - 0.5*(cableW2 - cableW1);
3017 x[2] = x[0] + cableL1;
3018 y[2] = y[1] + 0.5*(cableW2 - cableW1);
3020 x[3] = x[2] + cableL2;
3023 x[4] = x[3] + 0.5*(cableW3 - cableW2);
3024 y[4] = y[3] + 0.5*(cableW3 - cableW2);
3026 x[5] = x[4] + cableL3 - 0.5*(cableW3 - cableW2);
3029 for (Int_t i = 6; i < 12; i++) {
3034 TGeoVolumeAssembly* container[2];
3035 container[0] = new TGeoVolumeAssembly("ITSSPDConeModule");
3036 container[1] = new TGeoVolumeAssembly("ITSSPDCoolingModule");
3038 TGeoXtru *shCable = new TGeoXtru(2);
3039 shCable->DefinePolygon(12, x, y);
3040 shCable->DefineSection(0, 0., 0., 0., 1.0);
3041 shCable->DefineSection(1, cableThickness, 0., 0., 1.0);
3043 TGeoVolume *volCable = new TGeoVolume("ITSSPDExtender", shCable, medExt);
3044 volCable->SetLineColor(kGreen);
3046 TGeoVolume *volTube = gGeoManager->MakeTube("ITSSPDCoolingTubeCone", medInox, 5.*fgkmm, 6.*fgkmm, 0.5*(x[5] - x[0]));
3047 volTube->SetLineColor(kGray);
3049 Double_t thickness = cableThickness + mcmThickness;
3050 TGeoBBox *shOut = new TGeoBBox("ITSSPD_shape_plateout", 0.5*plateThickness, 0.5*plateLength, 0.5*plateWidth);
3051 TGeoBBox *shIn = new TGeoBBox("ITSSPD_shape_platein", 0.5*thickness, 0.52*plateLength, 0.5*cableW2);
3053 sprintf(string, "%s-%s", shOut->GetName(), shIn->GetName());
3054 TGeoCompositeShape *shPlate = new TGeoCompositeShape("ITSSPDPlate_shape", string);
3055 TGeoVolume *volPlate = new TGeoVolume("ITSSPDPlate", shPlate, medPlate);
3056 volPlate->SetLineColor(kRed);
3058 TGeoVolume *volMCMExt = gGeoManager->MakeBox("ITSSPDextenderMCM", medExt, 0.5*mcmThickness, 0.5*mcmLength, 0.5*mcmWidth);
3059 volMCMExt->SetLineColor(kGreen+3);
3061 TGeoRotation *rot = new TGeoRotation(*gGeoIdentity);
3064 container[0]->AddNode(volCable, 0, rot);
3066 TGeoTranslation *combi = new TGeoTranslation(cableThickness + 0.5*mcmThickness, x[0] + 0.5*mcmLength, 0.0);
3067 container[0]->AddNode(volMCMExt, 0, combi);
3069 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
3070 rot1->RotateX(87.5);
3071 TGeoCombiTrans *tr = new TGeoCombiTrans(1.15, x[0] + 0.5*(x[5] - x[0]), -2.95, rot1);
3072 container[1]->AddNode(volTube, 0, tr);
3074 TGeoTranslation *tr1 = new TGeoTranslation(0.5*plateThickness - 0.5*(plateThickness-thickness), x[3] - x[0] - 0.52*plateLength, 0.0);
3075 container[0]->AddNode(volPlate, 0, tr1);
3077 TList* conemodulelist = new TList();
3079 conemodulelist->Add(container[0]);
3080 conemodulelist->Add(container[1]);
3082 return conemodulelist;
3085 //______________________________________________________________________
3086 void AliITSv11GeometrySPD::CreateCones(TGeoVolume *moth) const
3089 TList* modulelist = CreateConeModule(gGeoManager);
3090 TGeoVolumeAssembly* module;
3092 //Double_t angle[10] = {18., 54., 90., 126., 162., -18., -54., -90., -126., -162.};
3093 // angleNm for cone modules (cables), angleNc for cooling tubes
3094 Double_t angle1m[10] = {18., 54., 90., 129., 165., 201.0, 237.0, 273.0, 309.0, 345.0};
3095 Double_t angle2m[10] = {18., 53., 90., 126., 162., 198.0, 233.0, 270.0, 309.0, 342.0};
3096 Double_t angle1c[10] = {18., 54., 90., 124., 165., 201.0, 237.0, 273.0, 304.0, 345.0};
3097 Double_t angle2c[10] = {18., 44., 90., 126., 162., 198.0, 223.0, 270.0, 309.0, 342.0};
3099 // First add the cables
3100 module = (TGeoVolumeAssembly*)modulelist->At(0);
3101 for (Int_t i = 0; i < 10; i++) {
3102 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
3103 rot1->RotateY(-90.0);
3104 rot1->RotateX(45.0);
3106 rot1->RotateZ(90.0 - angle1m[i]);
3107 TGeoCombiTrans *tr1 = new TGeoCombiTrans(0.0, 0.0, 38.0, rot1);
3108 moth->AddNode(module, 2*i, tr1);
3109 TGeoRotation *rot2 = new TGeoRotation(*gGeoIdentity);
3110 rot2->RotateY(90.0);
3111 rot2->RotateX(-45.0);
3113 rot2->RotateZ(90.0 - angle2m[i]);
3114 TGeoCombiTrans *tr2 = new TGeoCombiTrans(0.0, 0.0, -37.9, rot2);
3115 moth->AddNode(module, 2*i+1, tr2);
3118 // Then the cooling tubes
3119 module = (TGeoVolumeAssembly*)modulelist->At(1);
3120 for (Int_t i = 0; i < 10; i++) {
3121 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
3122 rot1->RotateY(-90.0);
3123 rot1->RotateX(45.0);
3125 rot1->RotateZ(90.0 - angle1c[i]);
3126 TGeoCombiTrans *tr1 = new TGeoCombiTrans(0.0, 0.0, 38.0, rot1);
3127 moth->AddNode(module, 2*i, tr1);
3128 TGeoRotation *rot2 = new TGeoRotation(*gGeoIdentity);
3129 rot2->RotateY(90.0);
3130 rot2->RotateX(-45.0);
3132 rot2->RotateZ(90.0 - angle2c[i]);
3133 TGeoCombiTrans *tr2 = new TGeoCombiTrans(0.0, 0.0, -37.9, rot2);
3134 moth->AddNode(module, 2*i+1, tr2);
3138 //______________________________________________________________________
3139 TGeoVolume* AliITSv11GeometrySPD::CreateExtender(
3140 const Double_t *extenderParams, const TGeoMedium *extenderMedium,
3141 TArrayD& sizes) const
3144 // ------------------ CREATE AN EXTENDER ------------------------
3146 // This function creates the following picture (in plane xOy)
3147 // Should be useful for the definition of the pixel bus and MCM extenders
3148 // The origin corresponds to point 0 on the picture, at half-width
3152 // ^ +---+---------------------+
3155 // 0------> X / +---------------------+
3162 // ---> +-----------+---+
3168 // Takes 6 parameters in the following order :
3169 // |--> par 0 : inner length [0-1] / [9-8]
3170 // |--> par 1 : thickness ( = [0-9] / [4-5])
3171 // |--> par 2 : angle of the slope
3172 // |--> par 3 : total height in local Y direction
3173 // |--> par 4 : outer length [3-4] / [6-5]
3174 // |--> par 5 : width in local Z direction
3176 Double_t slopeDeltaX = (extenderParams[3] - extenderParams[1]
3177 * TMath::Cos(extenderParams[2])) /
3178 TMath::Tan(extenderParams[2]);
3179 Double_t extenderXtruX[10] = {
3182 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2]) ,
3183 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3185 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3186 slopeDeltaX + extenderParams[4],
3187 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3188 slopeDeltaX + extenderParams[4],
3189 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3191 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3192 slopeDeltaX - extenderParams[1] * TMath::Sin(extenderParams[2]) ,
3196 Double_t extenderXtruY[10] = {
3199 extenderParams[1] * (1-TMath::Cos(extenderParams[2])) ,
3200 extenderParams[3] - extenderParams[1] ,
3201 extenderParams[3] - extenderParams[1] ,
3204 extenderParams[3]-extenderParams[1]*(1-TMath::Cos(extenderParams[2])) ,
3209 if (sizes.GetSize() != 3) sizes.Set(3);
3210 Double_t &thickness = sizes[0];
3211 Double_t &length = sizes[1];
3212 Double_t &width = sizes[2];
3214 thickness = extenderParams[3];
3215 width = extenderParams[5];
3216 length = extenderParams[0]+extenderParams[1]*
3217 TMath::Sin(extenderParams[2])+slopeDeltaX+extenderParams[4];
3219 // creation of the volume
3220 TGeoXtru *extenderXtru = new TGeoXtru(2);
3221 TGeoVolume *extenderXtruVol = new TGeoVolume("ITSSPDextender",extenderXtru,
3223 extenderXtru->DefinePolygon(10,extenderXtruX,extenderXtruY);
3224 extenderXtru->DefineSection(0,-0.5*extenderParams[4]);
3225 extenderXtru->DefineSection(1, 0.5*extenderParams[4]);
3226 return extenderXtruVol;
3228 //______________________________________________________________________
3229 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBusAndExtensions
3230 (Bool_t /*zpos*/, TGeoManager *mgr) const
3233 // Creates an assembly which contains the pixel bus and its extension
3234 // and the extension of the MCM.
3235 // By: Renaud Vernet
3236 // NOTE: to be defined its material and its extension in the outside
3239 // ==== constants =====
3242 //TGeoMedium *medPixelBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
3243 // IXEL BUS EXTENDER
3244 TGeoMedium *medPBExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr);
3246 TGeoMedium *medMCMExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr);
3247 // //geometrical constants
3248 const Double_t kPbextenderThickness = 0.07 * fgkmm;
3249 //design=?? 70 deg. seems OK
3250 const Double_t kPbExtenderSlopeAngle = 70.0 * TMath::Pi()/180.;
3251 // = 2.6 - (0.28+0.05+0.35) cf design
3252 const Double_t kPbExtenderHeight = 1.92 * fgkmm;
3253 const Double_t kPbExtenderWidthY = 11.0 * fgkmm;
3254 //design=?? 70 deg. seems OK
3255 const Double_t kMcmExtenderSlopeAngle = 70.0 * TMath::Pi()/180.;
3256 const Double_t kMcmExtenderThickness = 0.10 * fgkmm;
3257 const Double_t kMcmExtenderHeight = 1.8 * fgkmm;
3258 const Double_t kMcmExtenderWidthY = kPbExtenderWidthY;
3259 // const Double_t groundingThickness = 0.07 * fgkmm;
3260 // const Double_t grounding2pixelBusDz = 0.625 * fgkmm;
3261 // const Double_t pixelBusThickness = 0.28 * fgkmm;
3262 // const Double_t groundingWidthX = 170.501 * fgkmm;
3263 // const Double_t pixelBusContactDx = 1.099 * fgkmm;
3264 // const Double_t pixelBusWidthY = 13.8 * fgkmm;
3266 // const Double_t pixelBusContactPhi = 20.0 * TMath::Pi()/180.
3267 // const Double_t pbExtenderTopZ = 2.72 * fgkmm;
3268 // const Double_t mcmThickness = 0.35 * fgkmm;
3269 // const Double_t halfStaveTotalLength = 247.64 * fgkmm;
3270 // const Double_t deltaYOrigin = 15.95/2.* fgkmm;
3271 // const Double_t deltaXOrigin = 1.1 * fgkmm;
3272 // const Double_t deltaZOrigin = halfStaveTotalLength / 2.;
3273 // const Double_t grounding2pixelBusDz2 = grounding2pixelBusDz+
3274 // groundingThickness/2. + pixelBusThickness/2.;
3275 // const Double_t pixelBusWidthX = groundingWidthX;
3276 // const Double_t pixelBusRaiseLength = (pixelBusContactDx-
3277 // pixelBusThickness*TMath::Sin(pixelBusContactPhi))/
3278 // TMath::Cos(pixelBusContactPhi);
3279 // const Double_t pbExtenderBaseZ = grounding2pixelBusDz2 +
3280 // pixelBusRaiseLength*TMath::Sin(pixelBusContactPhi) +
3281 // 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi)*
3282 // TMath::Tan(pixelBusContactPhi);
3283 // const Double_t pbExtenderDeltaZ = pbExtenderTopZ-pbExtenderBaseZ;
3284 // const Double_t pbExtenderEndPointX = 2*deltaZOrigin -
3285 // groundingWidthX - 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi);
3286 // const Double_t pbExtenderXtru3L = 1.5 * fgkmm; //arbitrary ?
3287 // const Double_t pbExtenderXtru4L = (pbExtenderDeltaZ +
3288 // pixelBusThickness*(TMath::Cos(extenderSlope)-2))/
3289 // TMath::Sin(extenderSlope);
3290 // const Double_t kMcmExtenderEndPointX = deltaZOrigin - 48.2 * fgkmm;
3291 // const Double_t kMcmExtenderXtru3L = 1.5 * fgkmm;
3292 // //===== end constants =====
3293 const Double_t kPbExtenderInnerLength = 10. * fgkmm;
3294 const Double_t kPbExtenderOuterLength = 15. * fgkmm;
3295 const Double_t kMcmExtenderInnerLength = 10. * fgkmm;
3296 const Double_t kMcmExtenderOuterLength = 15. * fgkmm;
3297 Double_t pbExtenderParams[6] = {kPbExtenderInnerLength, //0
3298 kPbextenderThickness, //1
3299 kPbExtenderSlopeAngle, //2
3300 kPbExtenderHeight, //3
3301 kPbExtenderOuterLength, //4
3302 kPbExtenderWidthY}; //5
3304 Double_t mcmExtenderParams[6] = {kMcmExtenderInnerLength, //0
3305 kMcmExtenderThickness, //1
3306 kMcmExtenderSlopeAngle, //2
3307 kMcmExtenderHeight, //3
3308 kMcmExtenderOuterLength, //4
3309 kMcmExtenderWidthY}; //5
3312 TGeoVolume* pbExtender = CreateExtender(pbExtenderParams,medPBExtender,
3314 if(GetDebug(1))printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\t"
3315 "LENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
3316 TGeoVolume* mcmExtender = CreateExtender(mcmExtenderParams,medMCMExtender,
3318 if(GetDebug(1))printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\t"
3319 "LENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
3320 // Double_t pixelBusValues[5] = {pixelBusWidthX, //0
3321 // pixelBusThickness, //1
3322 // pixelBusContactPhi, //2
3323 // pixelBusRaiseLength, //3
3324 // pixelBusWidthY}; //4
3326 // Double_t pbExtenderValues[8] = {pixelBusRaiseLength, //0
3327 // pixelBusContactPhi, //1
3328 // pbExtenderXtru3L, //2
3329 // pixelBusThickness, //3
3330 // extenderSlope, //4
3331 // pbExtenderXtru4L, //5
3332 // pbExtenderEndPointX, //6
3333 // kPbExtenderWidthY}; //7
3335 // Double_t mcmExtenderValues[6] = {mcmExtenderXtru3L, //0
3336 // mcmExtenderThickness, //1
3337 // extenderSlope, //2
3338 // deltaMcmMcmExtender, //3
3339 // mcmExtenderEndPointX, //4
3340 // mcmExtenderWidthY}; //5
3341 // TGeoVolumeAssembly *pixelBus=new TGeoVolumeAssembly("ITSSPDpixelBus");
3342 // CreatePixelBus(pixelBus,pixelBusValues,medPixelBus);
3343 // TGeoVolumeAssembly *pbExtender = new TGeoVolumeAssembly(
3344 // "ITSSPDpixelBusExtender");
3345 // CreatePixelBusExtender(pbExtender,pbExtenderValues,medPBExtender);
3346 // TGeoVolumeAssembly *mcmExtender = new TGeoVolumeAssembly(
3347 // "ITSSPDmcmExtender");
3348 // CreateMCMExtender(mcmExtender,mcmExtenderValues,medMCMExtender);
3349 //-------------- DEFINITION OF GEOMETRICAL TRANSFORMATIONS --------
3350 // TGeoRotation * commonRot = new TGeoRotation("commonRot",0,90,0);
3351 // commonRot->MultiplyBy(new TGeoRotation("rot",-90,0,0));
3352 // TGeoTranslation * pixelBusTrans = new TGeoTranslation(
3353 // pixelBusThickness/2. - deltaXOrigin + 0.52*fgkmm ,
3354 // -pixelBusWidthY/2. + deltaYOrigin ,
3355 // -groundingWidthX/2. + deltaZOrigin);
3356 // TGeoRotation *pixelBusRot = new TGeoRotation(*commonRot);
3357 // TGeoTranslation *pbExtenderTrans =new TGeoTranslation(*pixelBusTrans);
3358 // TGeoRotation *pbExtenderRot = new TGeoRotation(*pixelBusRot);
3359 // pbExtenderTrans->SetDz(*(pbExtenderTrans->GetTranslation()+2) -
3360 // pixelBusWidthX/2. - 2*pixelBusThickness*
3361 // TMath::Sin(pixelBusContactPhi));
3363 // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) -
3364 // (pixelBusWidthY - kPbExtenderWidthY)/2.);
3366 // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) +
3367 // (pixelBusWidthY - kPbExtenderWidthY)/2.);
3369 // pbExtenderTrans->SetDx(*(pbExtenderTrans->GetTranslation()) +
3370 // pixelBusThickness/2 + 2*pixelBusThickness*
3371 // TMath::Sin(pixelBusContactPhi)*
3372 // TMath::Tan(pixelBusContactPhi));
3373 // TGeoTranslation * mcmExtenderTrans = new TGeoTranslation(0.12*fgkmm +
3374 // mcmThickness - deltaXOrigin,
3375 // pbExtenderTrans->GetTranslation()[1],
3377 // TGeoRotation * mcmExtenderRot = new TGeoRotation(*pbExtenderRot);
3378 // // add pt1000 components
3379 // Double_t pt1000Z = fgkmm * 64400. * 1E-4;
3380 // //Double_t pt1000X[10] = {319700., 459700., 599700., 739700.,
3381 // 879700., 1029700., 1169700., 1309700.,
3382 // 1449700., 1589700.};
3383 // Double_t pt1000X[10] ={66160., 206200., 346200., 486200., 626200.,
3384 // 776200., 916200., 1056200., 1196200., 1336200.};
3385 // Double_t pt1000size[3] = {fgkmm*1.5, fgkmm*0.6, fgkmm*3.1};
3387 // for (i = 0; i < 10; i++) {
3388 // pt1000X[i] *= fgkmm * 1E-4;
3390 // TGeoVolume *pt1000 = mgr->MakeBox("ITSSPDpt1000",0,0.5*pt1000size[0],
3391 // 0.5*pt1000size[1], 0.5*pt1000size[2]);
3392 // pt1000->SetLineColor(kGray);
3393 // Double_t refThickness = - pixelBusThickness;
3394 // for (i = 0; i < 10; i++) {
3395 // TGeoTranslation *tr = new TGeoTranslation(pt1000X[i]-
3396 // 0.5*pixelBusWidthX, 0.002+0.5*(-3.*refThickness+pt1000size[3]),
3397 // pt1000Z -0.5*pixelBusWidthY);
3398 // pixelBus->AddNode(pt1000, i+1, tr);
3401 //CREATE FINAL VOLUME ASSEMBLY AND ROTATE IT
3402 TGeoVolumeAssembly *assembly = new TGeoVolumeAssembly("ITSSPDextenders");
3403 // assembly->AddNode((TGeoVolume*)pixelBus,1,
3404 // new TGeoCombiTrans(*pixelBusTrans,*pixelBusRot));
3405 // assembly->AddNode((TGeoVolume*)pbExtender,1,
3406 // new TGeoCombiTrans(*pbExtenderTrans,*pbExtenderRot));
3407 // assembly->AddNode((TGeoVolume*)mcmExtender,1,
3408 // new TGeoCombiTrans(*mcmExtenderTrans,*mcmExtenderRot));
3409 // assembly->AddNode(mcmExtender,1,new TGeoIdentity());
3410 assembly->AddNode(pbExtender,1);
3411 assembly->AddNode(mcmExtender,1);
3412 // assembly->SetTransparency(50);
3416 //______________________________________________________________________
3417 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateHalfStave(Bool_t isRight,
3418 Int_t layer,Int_t idxCentral,Int_t idxSide,TArrayD &sizes,TGeoManager *mgr)
3421 // Implementation of an half-stave, which depends on the side where
3422 // we are on the stave. The convention for "left" and "right" is the
3423 // same as for the MCM. The return value is a TGeoAssembly which is
3424 // structured in such a way that the origin of its local reference
3425 // frame coincides with the origin of the whole stave.
3426 // The TArrayD passed by reference will contain details of the shape:
3427 // - sizes[0] = thickness
3428 // - sizes[1] = length
3429 // - sizes[2] = width
3430 // - sizes[3] = common 'x' position for eventual clips
3431 // - sizes[4] = common 'y' position for eventual clips
3432 // - sizes[5] = 'z' position of first clip
3433 // - sizes[6] = 'z' position of second clip
3438 // idxCentral and idxSide must be different
3439 if (idxCentral == idxSide) {
3440 AliInfo("Ladders must be inserted in half-stave with "
3441 "different indexes.");
3442 idxSide = idxCentral + 1;
3443 AliInfo(Form("Central ladder will be inserted with index %d",
3445 AliInfo(Form("Side ladder will be inserted with index %d",idxSide));
3448 // define the separations along Z direction between the objects
3449 Double_t sepLadderLadder = fgkmm * 0.2; // sep. btw the 2 ladders
3450 Double_t sepLadderCenter = fgkmm * 0.4; // sep. btw the "central" ladder
3451 // and the Z=0 plane in stave ref.
3452 Double_t sepLadderMCM = fgkmm * 0.3; // sep. btw the "external" ladder
3454 Double_t sepBusCenter = fgkmm * 0.3; // sep. btw the bus central edge
3455 // and the Z=0 plane in stave ref.
3460 TArrayD grndSize(3);
3461 // This one line repalces the 3 bellow, BNS.
3462 TGeoVolume *grndVol = CreateGroundingFoil(isRight, grndSize, mgr);
3463 Double_t &grndThickness = grndSize[0];
3464 Double_t &grndLength = grndSize[1];
3467 TArrayD ladderSize(3);
3468 TGeoVolume *ladder = CreateLadder(layer, ladderSize, mgr);
3469 Double_t ladderThickness = ladderSize[0];
3470 Double_t ladderLength = ladderSize[1];
3471 Double_t ladderWidth = ladderSize[2];
3475 TGeoVolumeAssembly *mcm = CreateMCM(!isRight,mcmSize,mgr);
3476 Double_t mcmThickness = mcmSize[0];
3477 Double_t mcmLength = mcmSize[1];
3478 Double_t mcmWidth = mcmSize[2];
3482 TGeoVolumeAssembly *bus = CreatePixelBus(isRight, layer, busSize, mgr);
3483 Double_t busThickness = busSize[0];
3484 Double_t busLength = busSize[1];
3485 Double_t busWidth = busSize[2];
3487 // glue between ladders and pixel bus
3488 TGeoMedium *medLadGlue = GetMedium("EPOXY$", mgr);
3489 Double_t ladGlueThickness = fgkmm * 0.1175 - fgkGapLadder;
3490 TGeoVolume *ladderGlue = mgr->MakeBox("ITSSPDladderGlue",medLadGlue,
3491 0.5*ladGlueThickness, 0.5*busWidth, 0.5*busLength);
3492 ladderGlue->SetLineColor(kYellow + 5);
3494 // create references for the whole object, as usual
3496 Double_t &fullThickness = sizes[0];
3497 Double_t &fullLength = sizes[1];
3498 Double_t &fullWidth = sizes[2];
3500 // compute the full size of the container
3501 fullLength = sepLadderCenter+2.0*ladderLength+sepLadderMCM+
3502 sepLadderLadder+mcmLength;
3503 fullWidth = ladderWidth;
3504 fullThickness = grndThickness + fgkGapLadder + mcmThickness + busThickness;
3505 //cout << "HSTAVE FULL THICKNESS = " << fullThickness << endl;
3509 // grounding foil (shifted only along thickness)
3510 Double_t xGrnd = -0.5*fullThickness + 0.5*grndThickness;
3511 Double_t zGrnd = -0.5*grndLength;
3512 if (!isRight) zGrnd = -zGrnd;
3513 TGeoTranslation *grndTrans = new TGeoTranslation(xGrnd, 0.0, zGrnd);
3515 // ladders (translations along thickness and length)
3516 // layers must be sorted going from the one at largest Z to the
3517 // one at smallest Z:
3518 // -|Zmax| ------> |Zmax|
3520 // then, for layer 1 ladders they must be placed exactly this way,
3521 // and in layer 2 at the opposite. In order to remember the placements,
3522 // we define as "inner" and "outer" ladder respectively the one close
3523 // to barrel center, and the one closer to MCM, respectively.
3524 Double_t xLad, zLadIn, zLadOut;
3525 xLad = xGrnd + 0.5*(grndThickness + ladderThickness) +
3526 0.01175 - fgkGapLadder;
3527 zLadIn = -sepLadderCenter - 0.5*ladderLength;
3528 zLadOut = zLadIn - sepLadderLadder - ladderLength;
3532 } // end if !isRight
3533 TGeoRotation *rotLad = new TGeoRotation(*gGeoIdentity);
3534 rotLad->RotateZ(90.0);
3535 rotLad->RotateY(180.0);
3536 Double_t sensWidth = fgkmm * 12.800;
3537 Double_t chipWidth = fgkmm * 15.950;
3538 Double_t guardRingWidth = fgkmm * 0.560;
3539 Double_t ladderShift = 0.5 * (chipWidth - sensWidth - 2.0*guardRingWidth);
3540 TGeoCombiTrans *trLadIn = new TGeoCombiTrans(xLad,ladderShift,zLadIn,
3542 TGeoCombiTrans *trLadOut = new TGeoCombiTrans(xLad,ladderShift,zLadOut,
3545 // MCM (length and thickness direction, placing at same level as the
3546 // ladder, which implies to recompute the position of center, because
3547 // ladder and MCM have NOT the same thickness) the two copies of the
3548 // MCM are placed at the same distance from the center, on both sides
3549 Double_t xMCM = xGrnd + 0.5*grndThickness + 0.5*mcmThickness +
3550 0.01175 - fgkGapLadder;
3551 Double_t yMCM = 0.5*(fullWidth - mcmWidth);
3552 Double_t zMCM = zLadOut - 0.5*ladderLength - 0.5*mcmLength - sepLadderMCM;
3553 if (!isRight) zMCM = zLadOut + 0.5*ladderLength + 0.5*mcmLength +
3556 // create the correction rotations
3557 TGeoRotation *rotMCM = new TGeoRotation(*gGeoIdentity);
3558 rotMCM->RotateY(90.0);
3559 TGeoCombiTrans *trMCM = new TGeoCombiTrans(xMCM, yMCM, zMCM, rotMCM);
3561 // glue between ladders and pixel bus
3562 Double_t xLadGlue = xLad + 0.5*ladderThickness + 0.01175 -
3563 fgkGapLadder + 0.5*ladGlueThickness;
3565 // bus (length and thickness direction)
3566 Double_t xBus = xLadGlue + 0.5*ladGlueThickness + 0.5*busThickness;
3567 Double_t yBus = 0.5*(fullWidth - busWidth) + 0.075; // Hardcode fix of a small overlap
3568 Double_t zBus = -0.5*busLength - sepBusCenter;
3569 if (!isRight) zBus = -zBus;
3570 TGeoTranslation *trBus = new TGeoTranslation(xBus, yBus, zBus);
3572 TGeoTranslation *trLadGlue = new TGeoTranslation(xLadGlue, 0.0, zBus);
3574 // create the container
3575 TGeoVolumeAssembly *container = 0;
3576 if (idxCentral+idxSide==5) {
3577 container = new TGeoVolumeAssembly("ITSSPDhalf-Stave1");
3579 container = new TGeoVolumeAssembly("ITSSPDhalf-Stave0");
3582 // add to container all objects
3583 container->AddNode(grndVol, 1, grndTrans);
3584 // ladders are inserted in different order to respect numbering scheme
3585 // which is inverted when going from outer to inner layer
3586 container->AddNode(ladder, idxCentral+1, trLadIn);
3587 container->AddNode(ladder, idxSide+1, trLadOut);
3588 container->AddNode(ladderGlue, 1, trLadGlue);
3589 container->AddNode(mcm, 1, trMCM);
3590 container->AddNode(bus, 1, trBus);
3592 // since the clips are placed in correspondence of two pt1000s,
3593 // their position is computed here, but they are not added by default
3594 // it will be the StavesInSector method which will decide to add them
3595 // anyway, to recovery some size informations on the clip, it must be
3598 // TGeoVolume *clipDummy = CreateClip(clipSize, kTRUE, mgr);
3599 CreateClip(clipSize, kTRUE, mgr);
3600 // define clip movements (width direction)
3601 sizes[3] = xBus + 0.5*busThickness;
3602 sizes[4] = 0.5 * (fullWidth - busWidth) - clipSize[6] - fgkmm*0.48;
3603 sizes[5] = zBus + busSize[4];
3604 sizes[6] = zBus + busSize[5];
3608 //______________________________________________________________________
3609 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateStave(Int_t layer,
3610 TArrayD &sizes, TGeoManager *mgr)
3613 // This method uses all other ones which create pieces of the stave
3614 // and assemblies everything together, in order to return the whole
3615 // stave implementation, which is returned as a TGeoVolumeAssembly,
3616 // due to the presence of some parts which could generate fake overlaps
3617 // when put on the sector.
3618 // This assembly contains, going from bottom to top in the thickness
3620 // - the complete grounding foil, defined by the "CreateGroundingFoil"
3621 // method which already joins some glue and real groudning foil
3622 // layers for the whole stave (left + right);
3623 // - 4 ladders, which are sorted according to the ALICE numbering
3624 // scheme, which depends on the layer we are building this stave for;
3625 // - 2 MCMs (a left and a right one);
3626 // - 2 pixel buses (a left and a right one);
3629 // - the layer number, which determines the displacement and naming
3630 // of sensitive volumes
3631 // - a TArrayD passed by reference which will contain the size
3632 // of virtual box containing the stave
3633 // - the TGeoManager
3636 // create the container
3637 TGeoVolumeAssembly *container = new TGeoVolumeAssembly(Form(
3638 "ITSSPDlay%d-Stave",layer));
3639 // define the indexes of the ladders in order to have the correct order
3640 // keeping in mind that the staves will be inserted as they are on layer
3641 // 2, while they are rotated around their local Y axis when inserted
3642 // on layer 1, so in this case they must be put in the "wrong" order
3643 // to turn out to be right at the end. The convention is:
3644 // -|Zmax| ------> |Zmax|
3646 // with respect to the "native" stave reference frame, "left" is in
3647 // the positive Z this leads the definition of these indexes:
3648 Int_t idxCentralL, idxSideL, idxCentralR, idxSideR;
3660 } // end if layer ==1
3662 // create the two half-staves
3663 TArrayD sizeL, sizeR;
3664 TGeoVolumeAssembly *hstaveL = CreateHalfStave(kFALSE, layer, idxCentralL,
3665 idxSideL, sizeL,mgr);
3666 TGeoVolumeAssembly *hstaveR = CreateHalfStave(kTRUE, layer, idxCentralR,
3667 idxSideR, sizeR, mgr);
3668 // copy the size to the stave's one
3670 sizes[0] = sizeL[0];
3671 sizes[1] = sizeR[1] + sizeL[1];
3672 sizes[2] = sizeL[2];
3673 sizes[3] = sizeL[3];
3674 sizes[4] = sizeL[4];
3675 sizes[5] = sizeL[5];
3676 sizes[6] = sizeL[6];
3677 sizes[7] = sizeR[5];
3678 sizes[8] = sizeR[6];
3680 // add to container all objects
3681 container->AddNode(hstaveL, 1);
3682 container->AddNode(hstaveR, 1);
3686 //______________________________________________________________________
3687 void AliITSv11GeometrySPD::SetAddStave(Bool_t *mask)
3690 // Define a mask which states qhich staves must be placed.
3691 // It is a string which must contain '0' or '1' depending if
3692 // a stave must be placed or not.
3693 // Each place is referred to one of the staves, so the first
3694 // six characters of the string will be checked.
3698 for (i = 0; i < 6; i++) fAddStave[i] = mask[i];
3700 //______________________________________________________________________
3701 void AliITSv11GeometrySPD::StavesInSector(TGeoVolume *moth, TGeoManager *mgr)
3704 // Unification of essentially two methods:
3705 // - the one which creates the sector structure
3706 // - the one which returns the complete stave
3708 // For compatibility, this method requires the same arguments
3709 // asked by "CarbonFiberSector" method, which is recalled here.
3710 // Like this cited method, this one does not return any value,
3711 // but it inserts in the mother volume (argument 'moth') all the stuff
3712 // which composes the complete SPD sector.
3714 // In the following, the stave numbering order used for arrays is the
3715 // same as defined in the GetSectorMountingPoints():
3721 // Arguments: see description of "CarbonFiberSector" method.
3724 Double_t shift[6]; // shift from the innermost position in the
3725 // sector placement plane (where the stave
3726 // edge is in the point where the rounded
3729 shift[0] = fgkmm * -0.691;
3730 shift[1] = fgkmm * 5.041;
3731 shift[2] = fgkmm * 1.816;
3732 shift[3] = fgkmm * -0.610;
3733 shift[4] = fgkmm * -0.610;
3734 shift[5] = fgkmm * -0.610;
3736 // corrections after interaction with Andrea and CAD
3737 Double_t corrX[6] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
3738 Double_t corrY[6] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
3742 corrX[2] = corrX[3] = corrX[4] = corrX[5] = -0.0016;
3746 corrY[2] = corrY[3] = corrY[4] = corrY[5] = -0.0003;
3748 corrX[0] += 0.00026;
3749 corrY[0] += -0.00080;
3751 corrX[1] += 0.00018;
3752 corrY[1] += -0.00086;
3754 corrX[2] += 0.00020;
3755 corrY[2] += -0.00062;
3757 corrX[3] += 0.00017;
3758 corrY[3] += -0.00076;
3760 corrX[4] += 0.00016;
3761 corrY[4] += -0.00096;
3763 corrX[5] += 0.00018;
3764 corrY[5] += -0.00107;
3766 // create stave volumes (different for layer 1 and 2)
3767 TArrayD staveSizes1(9), staveSizes2(9), clipSize(5);
3768 Double_t &staveHeight = staveSizes1[2], &staveThickness = staveSizes1[0];
3769 TGeoVolume *stave1 = CreateStave(1, staveSizes1, mgr);
3770 TGeoVolume *stave2 = CreateStave(2, staveSizes2, mgr);
3771 TGeoVolume *clip = CreateClip(clipSize, kFALSE, mgr);
3773 Double_t xL, yL; // leftmost edge of mounting point (XY projection)
3774 Double_t xR, yR; // rightmost edge of mounting point (XY projection)
3775 Double_t xM, yM; // middle point of the segment L-R
3776 Double_t dx, dy; // (xL - xR) and (yL - yR)
3777 Double_t widthLR; // width of the segment L-R
3778 Double_t angle; // stave rotation angle in degrees
3779 Double_t diffWidth; // difference between mounting plane width and
3780 // stave width (smaller)
3781 Double_t xPos, yPos; // final translation of the stave
3782 Double_t parMovement; // translation in the LR plane direction
3784 staveThickness += fgkGapHalfStave;
3788 for (i = 0; i < 6; i++) {
3789 // in debug mode, if this stave is not required, it is skipped
3790 if (!fAddStave[i]) continue;
3791 // retrieve reference points
3792 GetSectorMountingPoints(i, xL, yL, xR, yR);
3793 xM = 0.5 * (xL + xR);
3794 yM = 0.5 * (yL + yR);
3797 angle = TMath::ATan2(dy, dx);
3798 widthLR = TMath::Sqrt(dx*dx + dy*dy);
3799 diffWidth = 0.5*(widthLR - staveHeight);
3800 // first, a movement along this plane must be done
3801 // by an amount equal to the width difference
3802 // and then the fixed shift must also be added
3803 parMovement = diffWidth + shift[i];
3804 // due to stave thickness, another movement must be done
3805 // in the direction normal to the mounting plane
3806 // which is computed using an internal method, in a reference
3807 // frame where the LR segment has its middle point in the origin
3808 // and axes parallel to the master reference frame
3810 ParallelPosition(-0.5*staveThickness, -parMovement, angle,
3814 ParallelPosition( 0.5*staveThickness, -parMovement, angle,
3817 ParallelPosition( 0.5*staveThickness, parMovement, angle,
3820 // then we go into the true reference frame
3825 // using the parameters found here, compute the
3826 // translation and rotation of this stave:
3827 TGeoRotation *rot = new TGeoRotation(*gGeoIdentity);
3828 if (i == 0 || i == 1) rot->RotateX(180.0);
3829 rot->RotateZ(90.0 + angle * TMath::RadToDeg());
3830 TGeoCombiTrans *trans = new TGeoCombiTrans(xPos, yPos, 0.0, rot);
3831 if (i == 0 || i == 1) {
3832 moth->AddNode(stave1, i+1, trans);
3834 moth->AddNode(stave2, i - 1, trans);
3836 // except in the case of stave #2,
3837 // clips must be added, and this is done directly on the sector
3840 TGeoRotation *rotClip = new TGeoRotation(*gGeoIdentity);
3841 rotClip->RotateZ(-90.0);
3842 rotClip->RotateX(180.0);
3843 Double_t x = staveSizes2[3] + fgkGapHalfStave;
3844 Double_t y = staveSizes2[4];
3845 Double_t z[4] = { staveSizes2[5], staveSizes2[6],
3846 staveSizes2[7], staveSizes2[8] };
3847 for (j = 0; j < 4; j++) {
3848 TGeoCombiTrans *trClip = new TGeoCombiTrans(x, y, z[j],
3850 *trClip = *trans * *trClip;
3851 moth->AddNode(clip, iclip++, trClip);
3854 } // end if i==0||i==1 else
3857 //______________________________________________________________________
3858 void AliITSv11GeometrySPD::ParallelPosition(Double_t dist1, Double_t dist2,
3859 Double_t phi, Double_t &x, Double_t &y) const
3862 // Performs the following steps:
3863 // 1 - finds a straight line parallel to the one passing through
3864 // the origin and with angle 'phi' with X axis(phi in RADIANS);
3865 // 2 - finds another line parallel to the previous one, with a
3866 // distance 'dist1' from it
3867 // 3 - takes a reference point in the second line in the intersection
3868 // between the normal to both lines passing through the origin
3869 // 4 - finds a point whith has distance 'dist2' from this reference,
3870 // in the second line (point 2)
3872 // According to the signs given to dist1 and dist2, the point is
3873 // found in different position w.r. to the origin
3874 // compute the point
3876 Double_t cs = TMath::Cos(phi);
3877 Double_t sn = TMath::Sin(phi);
3879 x = dist2*cs - dist1*sn;
3880 y = dist1*cs + dist2*sn;
3882 //______________________________________________________________________
3883 Double_t AliITSv11GeometrySPD::GetSPDSectorTranslation(
3884 Double_t x0,Double_t y0,Double_t x1,Double_t y1,Double_t r) const
3887 // Comutes the radial translation of a sector to give the
3888 // proper distance between SPD detectors and the beam pipe.
3889 // Units in are units out.
3894 <A HREF="http://www.physics.ohio-state.edu/HIRG/SoftWareDoc/SPD_Sector_Position.png">
3895 Figure showing the geometry used in the computation below. </A>
3900 // Double_t x0 Point x0 on Sector surface for the inner
3901 // most detector mounting
3902 // Double_t y0 Point y0 on Sector surface for the innor
3903 // most detector mounting
3904 // Double_t x1 Point x1 on Sector surface for the inner
3905 // most detector mounting
3906 // Double_t y1 Point y1 on Sector surface for the innor
3907 // most detector mounting
3908 // Double_t r The radial distance this mounting surface
3909 // should be from the center of the beam pipe.
3913 // The distance the SPD sector should be displaced radialy.
3918 if(a==0.0) return 0.0;
3920 b = TMath::Sqrt(1.0+a*a);
3924 //______________________________________________________________________
3925 void AliITSv11GeometrySPD::CreateFigure0(const Char_t *filepath,
3927 TGeoManager *mgr) const
3930 // Creates Figure 0 for the documentation of this class. In this
3931 // specific case, it creates the X,Y cross section of the SPD suport
3932 // section, center and ends. The output is written to a standard
3933 // file name to the path specificed.
3935 // const Char_t *filepath Path where the figure is to be drawn
3936 // const Char_t *type The type of file, default is gif.
3937 // TGeoManager *mgr The TGeoManager default gGeoManager
3943 TGeoXtru *sA0,*sA1,*sB0,*sB1;
3944 //TPolyMarker *pmA,*pmB;
3945 TPolyLine plA0,plA1,plB0,plB1;
3948 Double_t x=0.0,y=0.0;
3951 if(strcmp(filepath,"")){
3952 Error("CreateFigure0","filepath=%s type=%s",filepath,type);
3955 sA0 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorA0_1")->
3957 sA1 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorAirA1_1")->
3959 sB0 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndB0_1")->
3961 sB1 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndAirB1_1"
3963 //pmA = new TPolyMarker();
3964 //pmA.SetMarkerStyle(2); // +
3965 //pmA.SetMarkerColor(7); // light blue
3966 //pmB = new TPolyMarker();
3967 //pmB.SetMarkerStyle(5); // X
3968 //pmB.SetMarkerColor(6); // purple
3969 plA0.SetPolyLine(sA0->GetNvert());
3970 plA0.SetLineColor(1); // black
3971 plA0.SetLineStyle(1);
3972 plA1.SetPolyLine(sA1->GetNvert());
3973 plA1.SetLineColor(2); // red
3974 plA1.SetLineStyle(1);
3975 plB0.SetPolyLine(sB0->GetNvert());
3976 plB0.SetLineColor(3); // Green
3977 plB0.SetLineStyle(2);
3978 plB1.SetPolyLine(sB1->GetNvert());
3979 plB1.SetLineColor(4); // Blue
3980 plB1.SetLineStyle(2);
3981 //for(i=0;i<kNRadii;i++) pmA.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
3982 //for(i=0;i<kNRadii;i++) pmB.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
3983 for(i=0;i<sA0->GetNvert();i++) plA0.SetPoint(i,sA0->GetX(i),sA0->GetY(i));
3984 for(i=0;i<sA1->GetNvert();i++) plA1.SetPoint(i,sA1->GetX(i),sA1->GetY(i));
3985 for(i=0;i<sB0->GetNvert();i++) plB0.SetPoint(i,sB0->GetX(i),sB0->GetY(i));
3986 for(i=0;i<sB1->GetNvert();i++) plB1.SetPoint(i,sB1->GetX(i),sB1->GetY(i));
3987 canvas = new TCanvas("AliITSv11GeometrySPDFig0","",1000,1000);
3988 canvas->Range(-3.,-3.,3.,3.);
3989 txt.SetTextSize(0.05);
3990 txt.SetTextAlign(33);
3991 txt.SetTextColor(1);
3992 txt.DrawLatex(2.9,2.9,"Section A-A outer Carbon Fiber surface");
3993 txt.SetTextColor(2);
3994 txt.DrawLatex(2.9,2.5,"Section A-A Inner Carbon Fiber surface");
3995 txt.SetTextColor(3);
3996 txt.DrawLatex(2.9,2.1,"Section E-E outer Carbon Fiber surface");
3997 txt.SetTextColor(4);
3998 txt.DrawLatex(2.9,1.7,"Section E-E Inner Carbon Fiber surface");
4009 for(i=0;i<kNRadii;i++){
4010 sprintf(chr,"%2d",i);txt.DrawLatex(x-0.1,y,chr);
4011 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x,y,chr);
4012 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+0.5,y,chr);
4013 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.0,y,chr);
4014 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.5,y,chr);
4015 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+2.0,y,chr);
4016 if(kTRUE) txt.DrawLatex(x+2.5,y,"A-A/E-E");
4017 else txt.DrawLatex(x+2.5,y,"E-E");
4019 txt.DrawLatex(x,y,"x_{c} mm");
4020 txt.DrawLatex(x+0.5,y,"y_{c} mm");
4021 txt.DrawLatex(x+1.0,y,"R mm");
4022 txt.DrawLatex(x+1.5,y,"#theta_{start}^{#circle}");
4023 txt.DrawLatex(x+2.0,y,"#theta_{end}^{#circle}");
4024 txt.DrawLatex(x+2.5,y,"Section");
4027 //______________________________________________________________________
4028 void AliITSv11GeometrySPD::PrintAscii(ostream *os) const
4031 // Print out class data values in Ascii Form to output stream
4033 // ostream *os Output stream where Ascii data is to be writen
4040 #if defined __GNUC__
4042 ios::fmtflags fmt = cout.flags();
4047 #if defined __ICC || defined __ECC || defined __xlC__
4054 *os<< fgkGapLadder <<" "<< fgkGapHalfStave<<" "<< 6 <<" ";
4055 for(i=0;i<6;i++) *os<< fAddStave[i] <<" "<<fSPDsectorX0.GetSize();
4056 for(i=0;i<fSPDsectorX0.GetSize();i++) *os<< fSPDsectorX0.GetAt(i) << " ";
4057 for(i=0;i<fSPDsectorX0.GetSize();i++) *os<< fSPDsectorY0.GetAt(i) << " ";
4058 for(i=0;i<fSPDsectorX1.GetSize();i++) *os<< fSPDsectorX1.GetAt(i) << " ";
4059 for(i=0;i<fSPDsectorX1.GetSize();i++) *os<< fSPDsectorY1.GetAt(i) << " ";
4060 *os<<10<<" "<< 2 <<" " << 6 << " "<< 3 <<" ";
4061 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4062 *os<<fTubeEndSector[k][0][i][j]<<" ";
4063 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4064 *os<<fTubeEndSector[k][1][i][j]<<" ";
4065 os->flags(fmt); // reset back to old Formating.
4069 //______________________________________________________________________
4070 void AliITSv11GeometrySPD::ReadAscii(istream* is)
4073 // Read in class data values in Ascii Form to output stream
4075 // istream *is Input stream where Ascii data is to be read in from
4082 Double_t gapLadder,GapHalfStave;
4084 *is>>gapLadder>>GapHalfStave>>n;
4086 Warning("ReadAscii","fAddStave Array !=6 n=%d",n);
4089 for(i=0;i<n;i++) *is>>fAddStave[i];
4091 fSPDsectorX0.Set(n);
4092 fSPDsectorY0.Set(n);
4093 fSPDsectorX1.Set(n);
4094 fSPDsectorY1.Set(n);
4095 for(i=0;i<n;i++) *is>>fSPDsectorX0[i];
4096 for(i=0;i<n;i++) *is>>fSPDsectorY0[i];
4097 for(i=0;i<n;i++) *is>>fSPDsectorX1[i];
4098 for(i=0;i<n;i++) *is>>fSPDsectorY1[i];
4100 if(i!=2||j!=6||n!=3){
4101 Warning("ReadAscii","fTubeEndSector array wrong size [2][6][3],"
4102 "found [%d][%d][%d]",i,j,n);
4105 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4106 *is>>fTubeEndSector[k][0][i][j];
4107 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4108 *is>>fTubeEndSector[k][1][i][j];
4112 //______________________________________________________________________
4113 ostream &operator<<(ostream &os,const AliITSv11GeometrySPD &s)
4116 // Standard output streaming function
4118 // ostream &os output steam
4119 // AliITSvPPRasymmFMD &s class to be streamed.
4123 // ostream &os The stream pointer
4129 //______________________________________________________________________
4130 istream &operator>>(istream &is,AliITSv11GeometrySPD &s)
4133 // Standard inputput streaming function
4135 // istream &is input steam
4136 // AliITSvPPRasymmFMD &s class to be streamed.
4140 // ostream &os The stream pointer
4146 //______________________________________________________________________
4147 Bool_t AliITSv11GeometrySPD::Make2DCrossSections(TPolyLine &a0,TPolyLine &a1,
4148 TPolyLine &b0,TPolyLine &b1,TPolyMarker &p)const
4151 // Fill the objects with the points representing
4152 // a0 the outer carbon fiber SPD sector shape Cross Section A
4153 // a1 the inner carbon fiber SPD sector shape Cross Section A
4154 // b0 the outer carbon fiber SPD sector shape Cross Section B
4155 // b1 the inner carbon fiber SPD sector shape Cross Section B
4158 // TPolyLine &a0 The outer carbon fiber SPD sector shape
4159 // TPolyLine &a1 The Inner carbon fiber SPD sector shape
4160 // TPolyLine &b0 The outer carbon fiber SPD sector shape
4161 // TPolyLine &b1 The Inner carbon fiber SPD sector shape
4162 // TPolyMarker &p The points where the ladders are to be placed
4164 // TPolyLine &a0 The shape filled with the points
4165 // TPolyLine &a1 The shape filled with the points
4166 // TPolyLine &b0 The shape filled with the points
4167 // TPolyLine &b1 The shape filled with the points
4168 // TPolyMarker &p The filled array of points
4174 TGeoVolume *a0V,*a1V,*b0V,*b1V;
4175 TGeoXtru *a0S,*a1S,*b0S,*b1S;
4176 TGeoManager *mgr = gGeoManager;
4178 a0V = mgr->GetVolume("ITS SPD Carbon fiber support Sector A0");
4179 a0S = dynamic_cast<TGeoXtru*>(a0V->GetShape());
4180 n0 = a0S->GetNvert();
4181 a0.SetPolyLine(n0+1);
4182 //for(i=0;i<fSPDsectorPoints0.GetSize();i++)
4183 // printf("%d %d %d\n",i,fSPDsectorPoints0[i],fSPDsectorPoints1[i]);
4187 //printf("%d %g %g\n",i,x,y);
4189 if(i==0) a0.SetPoint(n0,x,y);
4191 a1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorAirA1");
4192 a1S = dynamic_cast<TGeoXtru*>(a1V->GetShape());
4193 n1 = a1S->GetNvert();
4194 a1.SetPolyLine(n1+1);
4199 if(i==0) a1.SetPoint(n1,x,y);
4202 b0V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndB0");
4203 b0S = dynamic_cast<TGeoXtru*>(b0V->GetShape());
4204 n0 = b0S->GetNvert();
4205 b0.SetPolyLine(n0+1);
4210 if(i==0) b0.SetPoint(n0,x,y);
4212 b1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndAirB1");
4213 b1S = dynamic_cast<TGeoXtru*>(b1V->GetShape());
4214 n1 = b1S->GetNvert();
4215 b1.SetPolyLine(n1+1);
4220 if(i==0) b1.SetPoint(n1,x,y);
4223 Double_t x0,y0,x1,y1;
4224 p.SetPolyMarker(2*fSPDsectorX0.GetSize());
4225 for(i=0;i<fSPDsectorX0.GetSize();i++){
4226 GetSectorMountingPoints(i,x0,y0,x1,y1);
4227 p.SetPoint(2*i,x0,y0);
4228 p.SetPoint(2*i+1,x1,y1);
git://git.uio.no / u / mrichter / AliRoot.git / blob