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;
395 //______________________________________________________________________
396 void AliITSv11GeometrySPD::SPDSector(TGeoVolume *moth, TGeoManager *mgr)
399 // Creates a single SPD carbon fiber sector and places it
400 // in a container volume passed as first argument ('moth').
401 // Second argument points to the TGeoManager which coordinates
402 // the overall volume creation.
403 // The position of the sector is based on distance of
404 // closest point of SPD stave to beam pipe
405 // (figures all-sections-modules.ps) of 7.22mm at section A-A.
410 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
411 title="SPD Sector drawing with all cross sections defined">
412 <p>The SPD Sector definition. In
413 <a href="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.hpgl">HPGL</a> format.
414 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly-10-modules.ps"
415 titile="SPD All Sectors end view with thermal sheald">
416 <p>The SPD all sector end view with thermal sheald.
417 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/assembly.ps"
418 title="SPD side view cross section">
419 <p>SPD side view cross section with condes and thermal shealds.
420 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-A_A.jpg"
421 title="Cross section A-A"><p>Cross section A-A.
422 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-B_B.jpg"
423 title="Cross updated section A-A"><p>Cross updated section A-A.
424 <img src="http://physics.mps.ohio-state.edu/~nilsen/ITSfigures/Sezione_layerAA.pdf"
425 title="Cross section B-B"><p>Cross section B-B.
426 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-C_C.jpg"
427 title-"Cross section C-C"><p>Cross section C-C.
428 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-D_D.jpg"
429 title="Cross section D-D"><p>Cross section D-D.
430 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-E_E.jpg"
431 title="Cross section E-E"><p>Cross section E-E.
432 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-F_F.jpg"
433 title="Cross section F-F"><p>Cross section F-F.
434 <img src="http://alice.pd.infn.it/latestdr/Geometric-Revision/SECTION-G_G.jpg"
435 title="Cross section G-G"><p>Cross section G-G.
440 // TGeoVolume *moth Pointer to mother volume where this object
441 // is to be placed in
442 // TGeoManager *mgr Pointer to the TGeoManager used, defaule is
448 // Updated values for kSPDclossesStaveAA, kBeamPipeRadius, and
449 // staveThicknessAA are taken from
450 // http://physics.mps.ohio-state.edu/~nilsen/ITSfigures/Sezione_layerAA.pdf
452 const Double_t kSPDclossesStaveAA = 7.25* fgkmm;
453 const Double_t kSectorStartingAngle = -72.0 * fgkDegree;
454 const Int_t kNSectorsTotal = 10;
455 const Double_t kSectorRelativeAngle = 36.0 * fgkDegree; // = 360.0 / 10
456 const Double_t kBeamPipeRadius = 0.5 * 59.6 * fgkmm; // diam. = 59.6 mm
457 //const Double_t staveThicknessAA = 0.9 *fgkmm; // nominal thickness
458 const Double_t staveThicknessAA = 1.02 * fgkmm; // get from stave geometry.
461 Double_t angle, radiusSector, xAAtubeCenter0, yAAtubeCenter0;
462 TGeoCombiTrans *secRot = new TGeoCombiTrans(), *comrot;
463 TGeoVolume *vCarbonFiberSector;
464 TGeoMedium *medSPDcf;
466 // Define an assembly and fill it with the support of
467 // a single carbon fiber sector and staves in it
468 medSPDcf = GetMedium("SPD C (M55J)$", mgr);
469 vCarbonFiberSector = new TGeoVolumeAssembly("ITSSPDCarbonFiberSectorV");
470 vCarbonFiberSector->SetMedium(medSPDcf);
471 CarbonFiberSector(vCarbonFiberSector, xAAtubeCenter0, yAAtubeCenter0, mgr);
473 // Compute the radial shift out of the sectors
474 radiusSector = kBeamPipeRadius + kSPDclossesStaveAA + staveThicknessAA;
475 radiusSector = GetSPDSectorTranslation(fSPDsectorX0.At(1), fSPDsectorY0.At(1),
476 fSPDsectorX1.At(1), fSPDsectorY1.At(1), radiusSector);
477 //radiusSector *= radiusSector; // squaring;
478 //radiusSector -= xAAtubeCenter0 * xAAtubeCenter0;
479 //radiusSector = -yAAtubeCenter0 + TMath::Sqrt(radiusSector);
481 AliDebug(1, Form("SPDSector : radiusSector=%f\n",radiusSector));
483 AliDebug(1, Form("i= %d x0=%f y0=%f x1=%f y1=%f\n", i,
484 fSPDsectorX0.At(i), fSPDsectorY0.At(i),
485 fSPDsectorX1.At(i),fSPDsectorY1.At(i)));
487 // add 10 single sectors, by replicating the virtual sector defined above
488 // and placing at different angles
489 Double_t shiftX, shiftY, tub[2][6][3];
490 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];
491 angle = kSectorStartingAngle;
492 secRot->RotateZ(angle);
493 TGeoVolumeAssembly *vcenteral = new TGeoVolumeAssembly("ITSSPD");
494 moth->AddNode(vcenteral, 1, 0);
495 for(i = 0; i < kNSectorsTotal; i++) {
496 shiftX = -radiusSector * TMath::Sin(angle/fgkRadian);
497 shiftY = radiusSector * TMath::Cos(angle/fgkRadian);
498 //cout << "ANGLE = " << angle << endl;
499 shiftX += 0.1094 * TMath::Cos((angle + 196.)/fgkRadian);
500 shiftY += 0.1094 * TMath::Sin((angle + 196.)/fgkRadian);
503 //shiftX -= 0.11 * TMath::Cos(angle/fgkRadian); // add by Alberto
504 //shiftY -= 0.11 * TMath::Sin(angle/fgkRadian); // don't ask me where that 0.11 comes from!
505 secRot->SetDx(shiftX);
506 secRot->SetDy(shiftY);
507 comrot = new TGeoCombiTrans(*secRot);
508 vcenteral->AddNode(vCarbonFiberSector,i+1,comrot);
509 for(j=0;j<2;j++)for(k=0;k<6;k++) // Transform Tube ends for each sector
510 comrot->LocalToMaster(tub[j][k],fTubeEndSector[i][j][k]);
512 AliInfo(Form("i=%d angle=%g angle[rad]=%g radiusSector=%g "
513 "x=%g y=%g \n",i, angle, angle/fgkRadian,
514 radiusSector, shiftX, shiftY));
515 } // end if GetDebug(5)
516 angle += kSectorRelativeAngle;
517 secRot->RotateZ(kSectorRelativeAngle);
519 if(GetDebug(3)) moth->PrintNodes();
524 //______________________________________________________________________
525 void AliITSv11GeometrySPD::CarbonFiberSector(TGeoVolume *moth,
526 Double_t &xAAtubeCenter0, Double_t &yAAtubeCenter0, TGeoManager *mgr)
529 // Define the detail SPD Carbon fiber support Sector geometry.
530 // Based on the drawings:
532 http:///QA-construzione-profilo-modulo.ps
534 // - ALICE-Pixel "Costruzione Profilo Modulo" (march 25 2004)
535 // - ALICE-SUPPORTO "Costruzione Profilo Modulo"
537 // Define outside radii as negative, where "outside" means that the
538 // center of the arc is outside of the object (feb 16 2004).
540 // Arguments [the one passed by ref contain output values]:
542 // TGeoVolume *moth the voulme which will contain this object
543 // TGeoManager *mgr TGeo builder defauls is gGeoManager
545 // Double_t &xAAtubeCenter0 (by ref) x location of the outer surface
546 // of the cooling tube center for tube 0.
547 // Double_t &yAAtubeCenter0 (by ref) y location of the outer surface
548 // of the cooling tube center for tube 0.
552 // Int the two variables passed by reference values will be stored
553 // which will then be used to correctly locate this sector.
554 // The information used for this is the distance between the
555 // center of the #0 detector and the beam pipe.
556 // Measurements are taken at cross section A-A.
559 //TGeoMedium *medSPDfs = 0;//SPD support cone inserto stesalite 4411w
560 //TGeoMedium *medSPDfo = 0;//SPD support cone foam, Rohacell 50A.
561 //TGeoMedium *medSPDal = 0;//SPD support cone SDD mounting bracket Al
562 TGeoMedium *medSPDcf = GetMedium("SPD C (M55J)$", mgr);
563 TGeoMedium *medSPDss = GetMedium("INOX$", mgr);
564 TGeoMedium *medSPDair = GetMedium("AIR$", mgr);
565 TGeoMedium *medSPDcoolfl = GetMedium("Freon$", mgr); //ITSspdCoolingFluid
567 const Double_t ksecDz = 0.5 * 500.0 * fgkmm;
568 //const Double_t ksecLen = 30.0 * fgkmm;
569 const Double_t ksecCthick = 0.2 * fgkmm;
570 const Double_t ksecDipLength = 3.2 * fgkmm;
571 const Double_t ksecDipRadii = 0.4 * fgkmm;
572 //const Double_t ksecCoolingTubeExtraDepth = 0.86 * fgkmm;
574 // The following positions ('ksecX#' and 'ksecY#') and radii ('ksecR#')
575 // are the centers and radii of curvature of all the rounded corners
576 // between the straight borders of the SPD sector shape.
577 // To draw this SPD sector, the following steps are followed:
578 // 1) the (ksecX, ksecY) points are plotted
579 // and circles of the specified radii are drawn around them.
580 // 2) each pair of consecutive circles is connected by a line
581 // tangent to them, in accordance with the radii being "internal"
582 // or "external" with respect to the closed shape which describes
583 // the sector itself.
584 // The resulting connected shape is the section
585 // of the SPD sector surface in the transverse plane (XY).
587 const Double_t ksecX0 = -10.725 * fgkmm;
588 const Double_t ksecY0 = -14.853 * fgkmm;
589 const Double_t ksecR0 = -0.8 * fgkmm; // external
590 const Double_t ksecX1 = -13.187 * fgkmm;
591 const Double_t ksecY1 = -19.964 * fgkmm;
592 const Double_t ksecR1 = +0.6 * fgkmm; // internal // (modif. by Alberto)
593 //const Double_t ksecR1 = +0.8 * fgkmm; // internal // (modif. by Alberto)
595 // const Double_t ksecDip0 = 5.9 * fgkmm;
597 //const Double_t ksecX2 = -3.883 * fgkmm;
598 const Double_t ksecX2 = -3.833 * fgkmm; // (corr. by Alberto)
599 const Double_t ksecY2 = -17.805 * fgkmm;
600 const Double_t ksecR2 = +0.6 * fgkmm; // internal (guess)
601 const Double_t ksecX3 = -3.123 * fgkmm;
602 const Double_t ksecY3 = -14.618 * fgkmm;
603 const Double_t ksecR3 = -0.6 * fgkmm; // external
604 //const Double_t ksecDip1 = 8.035 * fgkmm;
606 const Double_t ksecX4 = +11.280 * fgkmm;
607 const Double_t ksecY4 = -14.473 * fgkmm;
608 const Double_t ksecR4 = +0.8 * fgkmm; // internal
609 const Double_t ksecX5 = +19.544 * fgkmm;
610 const Double_t ksecY5 = +10.961 * fgkmm;
611 const Double_t ksecR5 = +0.8 * fgkmm; // internal
612 //const Double_t ksecDip2 = 4.553 * fgkmm;
614 const Double_t ksecX6 = +10.830 * fgkmm;
615 const Double_t ksecY6 = +16.858 * fgkmm;
616 const Double_t ksecR6 = +0.6 * fgkmm; // internal
617 const Double_t ksecX7 = +11.581 * fgkmm;
618 const Double_t ksecY7 = +13.317 * fgkmm;
619 const Double_t ksecR7 = -0.6 * fgkmm; // external
620 //const Double_t ksecDip3 = 6.978 * fgkmm;
622 const Double_t ksecX8 = -0.733 * fgkmm;
623 const Double_t ksecY8 = +17.486 * fgkmm;
624 const Double_t ksecR8 = +0.6 * fgkmm; // internal
625 const Double_t ksecX9 = +0.562 * fgkmm;
626 //const Double_t ksecY9 = +14.486 * fgkmm; // correction by
627 const Double_t ksecY9 = +14.107 * fgkmm; // Alberto
628 const Double_t ksecR9 = -0.6 * fgkmm; // external
629 //const Double_t ksecDip4 = 6.978 * fgkmm;
631 const Double_t ksecX10 = -12.252 * fgkmm;
632 const Double_t ksecY10 = +16.298 * fgkmm;
633 const Double_t ksecR10 = +0.6 * fgkmm; // internal
634 const Double_t ksecX11 = -10.445 * fgkmm;
635 const Double_t ksecY11 = +13.162 * fgkmm;
636 const Double_t ksecR11 = -0.6 * fgkmm; // external
637 //const Double_t ksecDip5 = 6.978 * fgkmm;
639 const Double_t ksecX12 = -22.276 * fgkmm;
640 const Double_t ksecY12 = +12.948 * fgkmm;
641 const Double_t ksecR12 = +0.85 * fgkmm; // internal
642 const Double_t ksecR13 = -0.8 * fgkmm; // external
643 const Double_t ksecAngleSide13 = 36.0 * fgkDegree;
645 const Int_t ksecNRadii = 20;
646 const Int_t ksecNPointsPerRadii = 4;
647 const Int_t ksecNCoolingTubeDips = 6;
649 // Since the rounded parts are approximated by a regular polygon
650 // and a cooling tube of the propper diameter must fit, a scaling factor
651 // increases the size of the polygon for the tube to fit.
652 //const Double_t ksecRCoolScale = 1./TMath::Cos(TMath::Pi()/
653 // (Double_t)ksecNPointsPerRadii);
654 const Double_t ksecZEndLen = 30.000 * fgkmm;
655 //const Double_t ksecZFlangLen = 45.000 * fgkmm;
656 const Double_t ksecTl = 0.860 * fgkmm;
657 const Double_t ksecCthick2 = 0.600 * fgkmm;
658 //const Double_t ksecCthick3 = 1.80 * fgkmm;
659 //const Double_t ksecSidelen = 22.0 * fgkmm;
660 //const Double_t ksecSideD5 = 3.679 * fgkmm;
661 //const Double_t ksecSideD12 = 7.066 * fgkmm;
662 const Double_t ksecRCoolOut = 2.400 * fgkmm;
663 const Double_t ksecRCoolIn = 2.000 * fgkmm;
664 const Double_t ksecDl1 = 5.900 * fgkmm;
665 const Double_t ksecDl2 = 8.035 * fgkmm;
666 const Double_t ksecDl3 = 4.553 * fgkmm;
667 const Double_t ksecDl4 = 6.978 * fgkmm;
668 const Double_t ksecDl5 = 6.978 * fgkmm;
669 const Double_t ksecDl6 = 6.978 * fgkmm;
670 const Double_t ksecCoolTubeThick = 0.04 * fgkmm;
671 const Double_t ksecCoolTubeROuter = 2.6 * fgkmm;
672 const Double_t ksecCoolTubeFlatX = 3.696 * fgkmm;
673 const Double_t ksecCoolTubeFlatY = 0.68 * fgkmm;
674 //const Double_t ksecBeamX0 = 0.0 * fgkmm; // guess
675 //const Double_t ksecBeamY0 = (15.223 + 40.) * fgkmm; // guess
677 // redefine some of the points already defined above
678 // in the format of arrays (???)
679 const Int_t ksecNPoints = (ksecNPointsPerRadii + 1) * ksecNRadii + 8;
680 Double_t secX[ksecNRadii] = {
681 ksecX0, ksecX1, -1000.0,
682 ksecX2, ksecX3, -1000.0,
683 ksecX4, ksecX5, -1000.0,
684 ksecX6, ksecX7, -1000.0,
685 ksecX8, ksecX9, -1000.0,
686 ksecX10, ksecX11, -1000.0,
689 Double_t secY[ksecNRadii] = {
690 ksecY0, ksecY1, -1000.0,
691 ksecY2, ksecY3, -1000.0,
692 ksecY4, ksecY5, -1000.0,
693 ksecY6, ksecY7, -1000.0,
694 ksecY8, ksecY9, -1000.0,
695 ksecY10, ksecY11, -1000.0,
698 Double_t secR[ksecNRadii] = {
699 ksecR0, ksecR1, -.5 * ksecDipLength - ksecDipRadii,
700 ksecR2, ksecR3, -.5 * ksecDipLength - ksecDipRadii,
701 ksecR4, ksecR5, -.5 * ksecDipLength - ksecDipRadii,
702 ksecR6, ksecR7, -.5 * ksecDipLength - ksecDipRadii,
703 ksecR8, ksecR9, -.5 * ksecDipLength - ksecDipRadii,
704 ksecR10, ksecR11, -.5 * ksecDipLength - ksecDipRadii,
708 Double_t secDip[ksecNRadii] = {
709 0., 0., ksecDip0, 0., 0., ksecDip1,
710 0., 0., ksecDip2, 0., 0., ksecDip3,
711 0., 0., ksecDip4, 0., 0., ksecDip5,
715 Double_t secX2[ksecNRadii];
716 Double_t secY2[ksecNRadii];
717 Double_t secR2[ksecNRadii] = {
718 ksecR0, ksecR1, ksecRCoolOut,
719 ksecR2, ksecR3, ksecRCoolOut,
720 ksecR4, ksecR5, ksecRCoolOut,
721 ksecR6, ksecR7, ksecRCoolOut,
722 ksecR8, ksecR9, ksecRCoolOut,
723 ksecR10, ksecR11, ksecRCoolOut,
726 Double_t secDip2[ksecNCoolingTubeDips] = {
727 ksecDl1, ksecDl2, ksecDl3,
728 ksecDl4, ksecDl5, ksecDl6
730 Double_t secX3[ksecNRadii];
731 Double_t secY3[ksecNRadii];
732 const Int_t ksecDipIndex[ksecNCoolingTubeDips] = {2, 5, 8, 11, 14, 17};
733 Double_t secAngleStart[ksecNRadii];
734 Double_t secAngleEnd[ksecNRadii];
735 Double_t secAngleStart2[ksecNRadii];
736 Double_t secAngleEnd2[ksecNRadii];
737 Double_t secAngleTurbo[ksecNCoolingTubeDips] = {0., 0., 0., 0., 0., 0.0};
738 //Double_t secAngleStart3[ksecNRadii];
739 //Double_t secAngleEnd3[ksecNRadii];
740 Double_t xpp[ksecNPoints], ypp[ksecNPoints];
741 Double_t xpp2[ksecNPoints], ypp2[ksecNPoints];
742 Double_t *xp[ksecNRadii], *xp2[ksecNRadii];
743 Double_t *yp[ksecNRadii], *yp2[ksecNRadii];
744 TGeoXtru *sA0, *sA1, *sB0, *sB1,*sB2;
746 TGeoEltu *sTA0, *sTA1;
747 TGeoTube *sTB0, *sTB1; //,*sM0;
749 TGeoTranslation *trans;
750 TGeoCombiTrans *rotrans;
751 Double_t t, t0, t1, a, b, x0, y0,z0, x1, y1;
756 AliError("Container volume (argument) is NULL");
759 for(i = 0; i < ksecNRadii; i++) {
760 xp[i] = &(xpp[i*(ksecNPointsPerRadii+1)]);
761 yp[i] = &(ypp[i*(ksecNPointsPerRadii+1)]);
762 xp2[i] = &(xpp2[i*(ksecNPointsPerRadii+1)]);
763 yp2[i] = &(ypp2[i*(ksecNPointsPerRadii+1)]);
770 // find starting and ending angles for all but cooling tube sections
771 secAngleStart[0] = 0.5 * ksecAngleSide13;
772 for(i = 0; i < ksecNRadii - 2; i++) {
774 for(j=0;j<ksecNCoolingTubeDips;j++) tst = (tst||i==ksecDipIndex[j]);
777 for(j=0;j<ksecNCoolingTubeDips;j++) tst =(tst||(i+1)==ksecDipIndex[j]);
778 if (tst) j = i+2; else j = i+1;
779 AnglesForRoundedCorners(secX[i],secY[i],secR[i],secX[j],secY[j],
782 secAngleStart[j] = t1;
783 if(secR[i] > 0.0 && secR[j] > 0.0) {
784 if(secAngleStart[i] > secAngleEnd[i]) secAngleEnd[i] += 360.0;
785 } // end if(secR[i]>0.0 && secR[j]>0.0)
786 secAngleStart2[i] = secAngleStart[i];
787 secAngleEnd2[i] = secAngleEnd[i];
789 secAngleEnd[ksecNRadii-2] = secAngleStart[ksecNRadii-2] +
790 (secAngleEnd[ksecNRadii-5] - secAngleStart[ksecNRadii-5]);
791 if (secAngleEnd[ksecNRadii-2] < 0.0) secAngleEnd[ksecNRadii-2] += 360.0;
792 secAngleStart[ksecNRadii-1] = secAngleEnd[ksecNRadii-2] - 180.0;
793 secAngleEnd[ksecNRadii-1] = secAngleStart[0];
794 secAngleStart2[ksecNRadii-2] = secAngleStart[ksecNRadii-2];
795 secAngleEnd2[ksecNRadii-2] = secAngleEnd[ksecNRadii-2];
796 secAngleStart2[ksecNRadii-1] = secAngleStart[ksecNRadii-1];
797 secAngleEnd2[ksecNRadii-1] = secAngleEnd[ksecNRadii-1];
799 // find location of circle last rounded corner.
802 t0 = TanD(secAngleStart[i]-90.);
803 t1 = TanD(secAngleEnd[j]-90.);
804 t = secY[i] - secY[j];
805 // NOTE: secR[i=0] < 0; secR[j=18] > 0; and secR[j+1=19] < 0
806 t += (-secR[i]+secR[j+1]) * SinD(secAngleStart[i]);
807 t -= (secR[j]-secR[j+1]) * SinD(secAngleEnd[j]);
808 t += t1 * secX[j] - t0*secX[i];
809 t += t1 * (secR[j] - secR[j+1]) * CosD(secAngleEnd[j]);
810 t -= t0 * (-secR[i]+secR[j+1]) * CosD(secAngleStart[i]);
811 secX[ksecNRadii-1] = t / (t1-t0);
812 secY[ksecNRadii-1] = TanD(90.0+0.5*ksecAngleSide13)*
813 (secX[ksecNRadii-1]-secX[0])+secY[0];
814 secX2[ksecNRadii-1] = secX[ksecNRadii-1];
815 secY2[ksecNRadii-1] = secY[ksecNRadii-1];
816 secX3[ksecNRadii-1] = secX[ksecNRadii-1];
817 secY3[ksecNRadii-1] = secY[ksecNRadii-1];
819 // find location of cooling tube centers
820 for(i = 0; i < ksecNCoolingTubeDips; i++) {
822 x0 = secX[j-1] + TMath::Abs(secR[j-1]) * CosD(secAngleEnd[j-1]);
823 y0 = secY[j-1] + TMath::Abs(secR[j-1]) * SinD(secAngleEnd[j-1]);
824 x1 = secX[j+1] + TMath::Abs(secR[j+1]) * CosD(secAngleStart[j+1]);
825 y1 = secY[j+1] + TMath::Abs(secR[j+1]) * SinD(secAngleStart[j+1]);
826 t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
831 // get location of tube center->Surface for locating
832 // this sector around the beam pipe.
833 // This needs to be double checked, but I need my notes for that.
835 xAAtubeCenter0 = x0 + (x1 - x0) * t * 0.5;
836 yAAtubeCenter0 = y0 + (y1 - y0) * t * 0.5;
838 if(a + b*(a - x0) / (b - y0) > 0.0) {
839 secX[j] = a + TMath::Abs(y1-y0) * 2.0 * ksecDipRadii/t0;
840 secY[j] = b - TMath::Sign(2.0*ksecDipRadii,y1-y0) * (x1-x0)/t0;
841 secX2[j] = a + TMath::Abs(y1-y0) * ksecTl/t0;
842 secY2[j] = b - TMath::Sign(ksecTl,y1-y0) * (x1-x0) / t0;
843 secX3[j] = a + TMath::Abs(y1-y0) *
844 (2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY)/t0;
845 secY3[j] = b - TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
848 secX[j] = a - TMath::Abs(y1-y0)*2.0*ksecDipRadii/t0;
849 secY[j] = b + TMath::Sign(2.0*ksecDipRadii,y1-y0)*(x1-x0)/t0;
850 secX2[j] = a - TMath::Abs(y1-y0)*ksecTl/t0;
851 secY2[j] = b + TMath::Sign(ksecTl,y1-y0)*(x1-x0)/t0;
852 secX3[j] = a - TMath::Abs(y1-y0)*(2.0*ksecDipRadii-0.5*
853 ksecCoolTubeFlatY)/t0;
854 secY3[j] = b + TMath::Sign(2.0*ksecDipRadii-0.5*ksecCoolTubeFlatY,
856 } // end if(a+b*(a-x0)/(b-y0)>0.0)
858 // Set up Start and End angles to correspond to start/end of dips.
859 t1 = (secDip2[i]-TMath::Abs(secR[j])) / t0;
860 secAngleStart[j] =TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],
861 x0+(x1-x0)*t1-secX[j]);
862 if (secAngleStart[j]<0.0) secAngleStart[j] += 360.0;
863 secAngleStart2[j] = secAngleStart[j];
864 t1 = (secDip2[i]+TMath::Abs(secR[j]))/t0;
865 secAngleEnd[j] = TMath::RadToDeg()*TMath::ATan2(y0+(y1-y0)*t1-secY[j],
866 x0+(x1-x0)*t1-secX[j]);
867 if (secAngleEnd[j]<0.0) secAngleEnd[j] += 360.0;
868 secAngleEnd2[j] = secAngleEnd[j];
869 if (secAngleEnd[j]>secAngleStart[j]) secAngleEnd[j] -= 360.0;
870 secR[j] = TMath::Sqrt(secR[j]*secR[j]+4.0*ksecDipRadii*ksecDipRadii);
874 secAngleStart2[8] -= 360.;
875 secAngleStart2[11] -= 360.;
877 SPDsectorShape(ksecNRadii, secX, secY, secR, secAngleStart, secAngleEnd,
878 ksecNPointsPerRadii, m, xp, yp);
880 // Fix up dips to be square.
881 for(i = 0; i < ksecNCoolingTubeDips; i++) {
883 t = 0.5*ksecDipLength+ksecDipRadii;
884 t0 = TMath::RadToDeg()*TMath::ATan(2.0*ksecDipRadii/t);
885 t1 = secAngleEnd[j] + t0;
886 t0 = secAngleStart[j] - t0;
887 x0 = xp[j][1] = secX[j] + t*CosD(t0);
888 y0 = yp[j][1] = secY[j] + t*SinD(t0);
889 x1 = xp[j][ksecNPointsPerRadii-1] = secX[j] + t*CosD(t1);
890 y1 = yp[j][ksecNPointsPerRadii-1] = secY[j] + t*SinD(t1);
891 t0 = 1./((Double_t)(ksecNPointsPerRadii-2));
892 for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
893 // extra points spread them out.
894 t = ((Double_t)(k-1)) * t0;
895 xp[j][k] = x0+(x1-x0) * t;
896 yp[j][k] = y0+(y1-y0) * t;
898 secAngleTurbo[i] = -TMath::RadToDeg() * TMath::ATan2(y1-y0, x1-x0);
901 Form("i=%d -- angle=%f -- x0,y0=(%f, %f) -- x1,y1=(%f, %f)",
902 i, secAngleTurbo[i], x0, y0, x1, y1));
903 } // end if GetDebug(3)
905 sA0 = new TGeoXtru(2);
906 sA0->SetName("ITS SPD Carbon fiber support Sector A0");
907 sA0->DefinePolygon(m, xpp, ypp);
908 sA0->DefineSection(0, -ksecDz);
909 sA0->DefineSection(1, ksecDz);
911 // store the edges of each XY segment which defines
912 // one of the plane zones where staves will have to be placed
913 fSPDsectorX0.Set(ksecNCoolingTubeDips);
914 fSPDsectorY0.Set(ksecNCoolingTubeDips);
915 fSPDsectorX1.Set(ksecNCoolingTubeDips);
916 fSPDsectorY1.Set(ksecNCoolingTubeDips);
918 for(i = 0; i < ksecNCoolingTubeDips; i++) {
919 // Find index in xpp[] and ypp[] corresponding to where the
920 // SPD ladders are to be attached. Order them according to
921 // the ALICE numbering schema. Using array of indexes (+-1 for
922 // cooling tubes. For any "bend/dip/edge, there are
923 // ksecNPointsPerRadii+1 points involved.
925 else if (i == 1) j = 0;
927 ixy0 = (ksecDipIndex[j]-1)*(ksecNPointsPerRadii+1)+
928 (ksecNPointsPerRadii);
929 ixy1 = (ksecDipIndex[j]+1) * (ksecNPointsPerRadii+1);
930 fSPDsectorX0[i] = sA0->GetX(ixy0);
931 fSPDsectorY0[i] = sA0->GetY(ixy0);
932 fSPDsectorX1[i] = sA0->GetX(ixy1);
933 fSPDsectorY1[i] = sA0->GetY(ixy1);
936 //printf("SectorA#%d ",0);
937 InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],ksecCthick,
939 for(i = 1; i < m - 1; i++) {
940 j = i / (ksecNPointsPerRadii+1);
941 //printf("SectorA#%d ",i);
942 InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],
943 ksecCthick,xpp2[i],ypp2[i]);
945 //printf("SectorA#%d ",m);
946 InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
947 ksecCthick,xpp2[m-1],ypp2[m-1]);
948 // Fix center value of cooling tube dip and
949 // find location of cooling tube centers
950 for(i = 0; i < ksecNCoolingTubeDips; i++) {
954 x1 = xp2[j][ksecNPointsPerRadii-1];
955 y1 = yp2[j][ksecNPointsPerRadii-1];
956 t0 = TMath::Sqrt((x0-x1)*(x0-x1)+(y0-y1)*(y0-y1));
958 for(k = 2; k < ksecNPointsPerRadii - 1; k++) {
959 // extra points spread them out.
960 t = ((Double_t)(k-1)) * t0;
961 xp2[j][k] = x0+(x1-x0) * t;
962 yp2[j][k] = y0+(y1-y0) * t;
965 sA1 = new TGeoXtru(2);
966 sA1->SetName("ITS SPD Carbon fiber support Sector Air A1");
967 sA1->DefinePolygon(m, xpp2, ypp2);
968 sA1->DefineSection(0, -ksecDz);
969 sA1->DefineSection(1, ksecDz);
971 // Error in TGeoEltu. Semi-axis X must be < Semi-axis Y (?).
972 sTA0 = new TGeoEltu("ITS SPD Cooling Tube TA0", 0.5 * ksecCoolTubeFlatY,
973 0.5 * ksecCoolTubeFlatX, ksecDz);
974 sTA1 = new TGeoEltu("ITS SPD Cooling Tube coolant TA1",
975 sTA0->GetA() - ksecCoolTubeThick,
976 sTA0->GetB()-ksecCoolTubeThick,ksecDz);
977 SPDsectorShape(ksecNRadii,secX2,secY2,secR2,secAngleStart2,secAngleEnd2,
978 ksecNPointsPerRadii, m, xp, yp);
979 sB0 = new TGeoXtru(2);
980 sB0->SetName("ITS SPD Carbon fiber support Sector End B0");
981 sB0->DefinePolygon(m, xpp, ypp);
982 sB0->DefineSection(0, ksecDz);
983 sB0->DefineSection(1, ksecDz + ksecZEndLen);
985 //printf("SectorB#%d ",0);
986 // Points around the most sharpened tips have to be avoided - M.S. 24 feb 09
987 const Int_t nSpecialPoints = 5;
988 const Int_t kSpecialPoints[nSpecialPoints] = {7, 17, 47, 62, 77};
990 InsidePoint(xpp[m-1],ypp[m-1],xpp[0],ypp[0],xpp[1],ypp[1],
991 ksecCthick2,xpp2[i2],ypp2[i2]);
992 for(i = 1; i < m - 1; i++) {
994 for(k = 0; k < ksecNCoolingTubeDips; k++)
995 if((i/(ksecNPointsPerRadii+1))==ksecDipIndex[k])
996 if(!(ksecDipIndex[k]*(ksecNPointsPerRadii+1) == i ||
997 ksecDipIndex[k]*(ksecNPointsPerRadii+1) +
998 ksecNPointsPerRadii == i))
999 t = ksecRCoolOut-ksecRCoolIn;
1000 //printf("SectorB#%d ",i);
1001 Bool_t useThisPoint = kTRUE;
1002 for(Int_t ii = 0; ii < nSpecialPoints; ii++)
1003 if ( (i == kSpecialPoints[ii] - 1) ||
1004 (i == kSpecialPoints[ii] + 1) ) useThisPoint = kFALSE;
1007 InsidePoint(xpp[i-1],ypp[i-1],xpp[i],ypp[i],xpp[i+1],ypp[i+1],t,
1011 //printf("SectorB#%d ",m);
1013 InsidePoint(xpp[m-2],ypp[m-2],xpp[m-1],ypp[m-1],xpp[0],ypp[0],
1014 ksecCthick2,xpp2[i2],ypp2[i2]);
1015 sB1 = new TGeoXtru(2);
1016 sB1->SetName("ITS SPD Carbon fiber support Sector Air End B1");
1017 sB1->DefinePolygon(i2+1, xpp2, ypp2);
1018 sB1->DefineSection(0,sB0->GetZ(0));
1019 sB1->DefineSection(1,sB0->GetZ(1)-ksecCthick2);
1020 const Double_t kspdEndHoleRadius1=5.698*fgkmm;
1021 const Double_t kspdEndHoleRadius2=2.336*fgkmm;
1022 const Double_t kspdEndHoleDisplacement=6.29*fgkmm;
1025 t= ((Double_t)i)/((Double_t)(k));
1026 if(!CFHolePoints(t,kspdEndHoleRadius1,kspdEndHoleRadius2,
1027 kspdEndHoleDisplacement,xpp2[i],ypp2[i])){
1028 Warning("CarbonFiberSector","CFHolePoints failed "
1029 "i=%d m=%d k=%d t=%e",i,m,k,t);
1031 // simitry in each quadrant.
1032 xpp2[2*k-i] = -xpp2[i];
1033 ypp2[2*k-i] = ypp2[i];
1034 xpp2[2*k+i] = -xpp2[i];
1035 ypp2[2*k+i] = -ypp2[i];
1036 xpp2[4*k-i] = xpp2[i];
1037 ypp2[4*k-i] = -ypp2[i];
1039 //xpp2[m-1] = xpp2[0]; // begining point in
1040 //ypp2[m-1] = ypp2[0]; // comment with end point
1041 sB2 = new TGeoXtru(2);
1042 sB2->SetName("ITS SPD Hole in Carbon fiber support End plate");
1043 sB2->DefinePolygon(4*k, xpp2, ypp2);
1044 sB2->DefineSection(0,sB1->GetZ(1));
1045 sB2->DefineSection(1,sB0->GetZ(1));
1046 // SPD sector mount blocks
1047 const Double_t kMountBlock[3] = {0.5*(1.8-0.2)*fgkmm,0.5*22.0*fgkmm,
1049 sB3 = new TGeoBBox((Double_t*)kMountBlock);
1050 // SPD sector cooling tubes
1051 sTB0 = new TGeoTube("ITS SPD Cooling Tube End TB0", 0.0,
1052 0.5*ksecCoolTubeROuter,0.5*(sB1->GetZ(1)-sB1->GetZ(0)));
1053 sTB1 = new TGeoTube("ITS SPD Cooling Tube End coolant TB0", 0.0,
1054 sTB0->GetRmax() - ksecCoolTubeThick,sTB0->GetDz());
1057 if(medSPDcf) medSPDcf->Dump(); else AliInfo("medSPDcf = 0");
1058 if(medSPDss) medSPDss->Dump(); else AliInfo("medSPDss = 0");
1059 if(medSPDair) medSPDair->Dump(); else AliInfo("medSPDAir = 0");
1060 if(medSPDcoolfl) medSPDcoolfl->Dump();else AliInfo("medSPDcoolfl = 0");
1061 sA0->InspectShape();
1062 sA1->InspectShape();
1063 sB0->InspectShape();
1064 sB1->InspectShape();
1065 sB2->InspectShape();
1066 } // end if(GetDebug(3))
1068 // create the assembly of the support and place staves on it
1069 TGeoVolumeAssembly *vM0 = new TGeoVolumeAssembly(
1070 "ITSSPDSensitiveVirtualvolumeM0");
1071 StavesInSector(vM0);
1072 // create other volumes with some graphical settings
1073 TGeoVolume *vA0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorA0",
1075 vA0->SetVisibility(kTRUE);
1076 vA0->SetLineColor(4); // Blue
1077 vA0->SetLineWidth(1);
1078 vA0->SetFillColor(vA0->GetLineColor());
1079 vA0->SetFillStyle(4010); // 10% transparent
1080 TGeoVolume *vA1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorAirA1",
1082 vA1->SetVisibility(kTRUE);
1083 vA1->SetLineColor(7); // light Blue
1084 vA1->SetLineWidth(1);
1085 vA1->SetFillColor(vA1->GetLineColor());
1086 vA1->SetFillStyle(4090); // 90% transparent
1087 TGeoVolume *vTA0 = new TGeoVolume("ITSSPDCoolingTubeTA0", sTA0, medSPDss);
1088 vTA0->SetVisibility(kTRUE);
1089 vTA0->SetLineColor(15); // gray
1090 vTA0->SetLineWidth(1);
1091 vTA0->SetFillColor(vTA0->GetLineColor());
1092 vTA0->SetFillStyle(4000); // 0% transparent
1093 TGeoVolume *vTA1 = new TGeoVolume("ITSSPDCoolingTubeFluidTA1",
1094 sTA1, medSPDcoolfl);
1095 vTA1->SetVisibility(kTRUE);
1096 vTA1->SetLineColor(6); // Purple
1097 vTA1->SetLineWidth(1);
1098 vTA1->SetFillColor(vTA1->GetLineColor());
1099 vTA1->SetFillStyle(4000); // 0% transparent
1100 TGeoVolume *vB0 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndB0",
1102 vB0->SetVisibility(kTRUE);
1103 vB0->SetLineColor(1); // Black
1104 vB0->SetLineWidth(1);
1105 vB0->SetFillColor(vB0->GetLineColor());
1106 vB0->SetFillStyle(4000); // 0% transparent
1107 TGeoVolume *vB1 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB1",
1109 vB1->SetVisibility(kTRUE);
1110 vB1->SetLineColor(0); // white
1111 vB1->SetLineWidth(1);
1112 vB1->SetFillColor(vB1->GetLineColor());
1113 vB1->SetFillStyle(4100); // 100% transparent
1114 TGeoVolume *vB2 = new TGeoVolume("ITSSPDCarbonFiberSupportSectorEndAirB2",
1116 vB2->SetVisibility(kTRUE);
1117 vB2->SetLineColor(0); // white
1118 vB2->SetLineWidth(1);
1119 vB2->SetFillColor(vB2->GetLineColor());
1120 vB2->SetFillStyle(4100); // 100% transparent
1121 TGeoVolume *vB3 = new TGeoVolume(
1122 "ITSSPDCarbonFiberSupportSectorMountBlockB3",sB3, medSPDcf);
1123 vB3->SetVisibility(kTRUE);
1124 vB3->SetLineColor(1); // Black
1125 vB3->SetLineWidth(1);
1126 vB3->SetFillColor(vB3->GetLineColor());
1127 vB3->SetFillStyle(4000); // 0% transparent
1128 TGeoVolume *vTB0 = new TGeoVolume("ITSSPDCoolingTubeEndTB0",sTB0,medSPDss);
1129 vTB0->SetVisibility(kTRUE);
1130 vTB0->SetLineColor(15); // gray
1131 vTB0->SetLineWidth(1);
1132 vTB0->SetFillColor(vTB0->GetLineColor());
1133 vTB0->SetFillStyle(4000); // 0% transparent
1134 TGeoVolume *vTB1 = new TGeoVolume("ITSSPDCoolingTubeEndFluidTB1",sTB1,
1136 vTB1->SetVisibility(kTRUE);
1137 vTB1->SetLineColor(7); // light blue
1138 vTB1->SetLineWidth(1);
1139 vTB1->SetFillColor(vTB1->GetLineColor());
1140 vTB1->SetFillStyle(4050); // 0% transparent
1142 // add volumes to mother container passed as argument of this method
1143 moth->AddNode(vM0,1,0); // Add virtual volume to mother
1144 vA0->AddNode(vA1,1,0); // Put air inside carbon fiber.
1145 vB0->AddNode(vB1,1,0); // Put air inside carbon fiber ends.
1146 vB0->AddNode(vB2,1,0); // Put air wholes inside carbon fiber ends
1147 vTA0->AddNode(vTA1,1,0); // Put cooling liquid indide tube middel.
1148 vTB0->AddNode(vTB1,1,0); // Put cooling liquid inside tube end.
1149 Double_t tubeEndLocal[3]={0.0,0.0,sTA0->GetDz()};
1150 for(i = 0; i < ksecNCoolingTubeDips; i++) {
1151 x0 = secX3[ksecDipIndex[i]];
1152 y0 = secY3[ksecDipIndex[i]];
1153 t = 90.0 - secAngleTurbo[i];
1154 trans = new TGeoTranslation("",x0,y0,0.5*(sB1->GetZ(0)+sB1->GetZ(1)));
1155 vB1->AddNode(vTB0, i+1, trans);
1156 // Find location of tube ends for later use.
1157 trans->LocalToMaster(tubeEndLocal,fTubeEndSector[0][0][i]);
1158 rot = new TGeoRotation("", 0.0, 0.0, t);
1159 rotrans = new TGeoCombiTrans("", x0, y0, 0.0, rot);
1160 vM0->AddNode(vTA0, i+1, rotrans);
1162 vM0->AddNode(vA0, 1, 0);
1163 vM0->AddNode(vB0, 1, 0);
1165 rot = new TGeoRotation("", 90., 0., 90., 90., 180., 0.);
1166 vM0->AddNode(vB0,2,rot);
1167 // Find location of tube ends for later use.
1168 for(i=0;i<ksecNCoolingTubeDips;i++) rot->LocalToMaster(
1169 fTubeEndSector[0][0][i],fTubeEndSector[0][1][i]);
1171 t = -TMath::RadToDeg()*TMath::ATan2(
1172 sB0->GetX(0)-sB0->GetX(sB0->GetNvert()-1),
1173 sB0->GetY(0)-sB0->GetY(sB0->GetNvert()-1));
1174 rot = new TGeoRotation("",t,0.0,0.0);// z axis rotation
1175 x0 = 0.5*(sB0->GetX(0)+sB0->GetX(sB0->GetNvert()-1))+
1176 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1177 y0 = 0.5*(sB0->GetY(0)+sB0->GetY(sB0->GetNvert()-1))+
1178 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1179 z0 = sB0->GetZ(0)+sB3->GetDZ();
1180 rotrans = new TGeoCombiTrans("",x0,y0,z0,rot);
1181 vM0->AddNode(vB3,1,rotrans); // Put Mounting bracket on sector
1182 rotrans = new TGeoCombiTrans("",x0,y0,-z0,rot);
1183 vM0->AddNode(vB3,2,rotrans); // Put Mounting bracket on sector
1185 j = 0; // right side, find point with largest x value
1187 for(i=1;i<sB0->GetNvert();i++)if(sB0->GetX(i)>x1) {j=i;x1=sB0->GetX(i);}
1188 j--; // Too big by 1
1189 //t = -TMath::RadToDeg()*TMath::ATan2(
1190 // sB0->GetX(j)-sB0->GetX(j-1),
1191 // sB0->GetY(j)-sB0->GetY(j-1));
1194 rot = new TGeoRotation("",t,0.0,0.0); // z axis rotation
1195 /* // this way gets correct orientation but wrong "height"
1196 x0 = 0.5*(sB0->GetX(j)+sB0->GetX(j-1))+
1197 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1198 y0 = 0.5*(sB0->GetY(j)+sB0->GetY(j-1))+
1199 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1200 z0 = sB0->GetZ(0)+sB3->GetDZ();
1201 */ // I don't understand the need for this factor 3.5.
1202 // posibly the SPD sector as coded isn't symetric which the
1203 // plans would suggest.
1204 x0 = -0.5*(sB0->GetX(0)+sB0->GetX(sB0->GetNvert()-1))-3.5*
1205 sB3->GetDX()*TMath::Cos(t*TMath::DegToRad());
1206 y0 = 0.5*(sB0->GetY(0)+sB0->GetY(sB0->GetNvert()-1))-3.5*
1207 sB3->GetDX()*TMath::Sin(t*TMath::DegToRad());
1208 rotrans = new TGeoCombiTrans("",1.01*x0,y0,z0,rot);
1209 vM0->AddNode(vB3,3,rotrans); // Put Mounting bracket on sector
1210 rotrans = new TGeoCombiTrans("",1.01*x0,y0,-z0,rot);
1211 vM0->AddNode(vB3,4,rotrans); // Put Mounting bracket on sector
1224 } // end if(GetDebug(3))
1226 //______________________________________________________________________
1227 Bool_t AliITSv11GeometrySPD::CFHolePoints(Double_t s,Double_t r1,
1228 Double_t r2,Double_t l,Double_t &x,Double_t &y) const
1231 // Step along arck a distancs ds and compute boundry of
1232 // two holes (radius r1 and r2) a distance l apart (along
1235 // Double_t s fractional Distance along arcs [0-1]
1236 // where 0-> alpha=beta=0, 1-> alpha=90 degrees.
1237 // Double_t r1 radius at center circle
1238 // Double_t r2 radius of displaced circle
1239 // Double_t l Distance displaced circle is displaces (x-axis)
1241 // Double_t x x coordinate along double circle.
1242 // Double_t y y coordinate along double circle.
1244 // logical, kFALSE if an error
1246 Double_t alpha,beta;
1247 Double_t ac,bc,scb,sca,t,alphac,betac; // at intersection of two circles
1250 ac = r1*r1-l*l-r2*r2;
1252 if(bc==0.0) {printf("bc=0 l=%e r2=%e\n",l,r2);return kFALSE;}
1253 betac = TMath::ACos(ac/bc);
1254 alphac = TMath::Sqrt((bc-ac)*(bc+ac))/(2.*l*r1);
1257 t = r1*0.5*TMath::Pi() - sca + scb;
1260 x = r2*TMath::Cos(beta) + l;
1261 y = r2*TMath::Sin(beta);
1262 //printf("betac=%e scb=%e t=%e s=%e beta=%e x=%e y=%e\n",
1263 // betac,scb,t,s,beta,x,y);
1266 beta = (s*t-scb+sca)/(r1*0.5*TMath::Pi());
1267 alpha = beta*0.5*TMath::Pi();
1268 x = r1*TMath::Cos(alpha);
1269 y = r1*TMath::Sin(alpha);
1270 //printf("alphac=%e sca=%e t=%e s=%e beta=%e alpha=%e x=%e y=%e\n",
1271 // alphac,sca,t,s,beta,alpha,x,y);
1276 //______________________________________________________________________
1277 Bool_t AliITSv11GeometrySPD::GetSectorMountingPoints(Int_t index,Double_t &x0,
1278 Double_t &y0, Double_t &x1, Double_t &y1) const
1281 // Returns the edges of the straight borders in the SPD sector shape,
1282 // which are used to mount staves on them.
1283 // Coordinate system is that of the carbon fiber sector volume.
1285 // Index numbering is as follows:
1291 // Arguments [the ones passed by reference contain output values]:
1292 // Int_t index --> location index according to above scheme [0-5]
1293 // Double_t &x0 --> (by ref) x0 location or the ladder sector [cm]
1294 // Double_t &y0 --> (by ref) y0 location of the ladder sector [cm]
1295 // Double_t &x1 --> (by ref) x1 location or the ladder sector [cm]
1296 // Double_t &y1 --> (by ref) y1 location of the ladder sector [cm]
1297 // TGeoManager *mgr --> The TGeo builder
1299 // The location is described by a line going from (x0, y0) to (x1, y1)
1301 // Returns kTRUE if no problems encountered.
1302 // Returns kFALSE if a problem was encountered (e.g.: shape not found).
1304 Int_t isize = fSPDsectorX0.GetSize();
1306 x0 = x1 = y0 = y1 = 0.0;
1307 if(index < 0 || index > isize) {
1308 AliError(Form("index = %d: allowed 0 --> %", index, isize));
1310 } // end if(index<0||index>isize)
1311 x0 = fSPDsectorX0[index];
1312 x1 = fSPDsectorX1[index];
1313 y0 = fSPDsectorY0[index];
1314 y1 = fSPDsectorY1[index];
1317 //______________________________________________________________________
1318 void AliITSv11GeometrySPD::SPDsectorShape(Int_t n,const Double_t *xc,
1319 const Double_t *yc, const Double_t *r,
1320 const Double_t *ths, const Double_t *the,
1321 Int_t npr, Int_t &m, Double_t **xp, Double_t **yp) const
1324 // Code to compute the points that make up the shape of the SPD
1325 // Carbon fiber support sections
1327 // Int_t n size of arrays xc,yc, and r.
1328 // Double_t *xc array of x values for radii centers.
1329 // Double_t *yc array of y values for radii centers.
1330 // Double_t *r array of signed radii values.
1331 // Double_t *ths array of starting angles [degrees].
1332 // Double_t *the array of ending angles [degrees].
1333 // Int_t npr the number of lines segments to aproximate the arc.
1334 // Outputs (arguments passed by reference):
1335 // Int_t m the number of enetries in the arrays *xp[npr+1]
1337 // Double_t **xp array of x coordinate values of the line segments
1338 // which make up the SPD support sector shape.
1339 // Double_t **yp array of y coordinate values of the line segments
1340 // which make up the SPD support sector shape.
1347 cout <<" X \t Y \t R \t S \t E" << m << endl;
1348 for(i = 0; i < n; i++) {
1349 cout << "{" << xc[i] << ", ";
1350 cout << yc[i] << ", ";
1351 cout << r[i] << ", ";
1352 cout << ths[i] << ", ";
1353 cout << the[i] << "}, " << endl;
1355 } // end if(GetDebug(2))
1356 if (GetDebug(3)) cout << "Double_t sA0 = [" << n*(npr+1)+1<<"][";
1357 if (GetDebug(4)) cout << "3] {";
1358 else if(GetDebug(3)) cout <<"2] {";
1360 for(i = 0; i < n; i++) {
1361 t1 = (the[i] - ths[i]) / t0;
1362 if(GetDebug(5)) cout << "t1 = " << t1 << endl;
1363 for(k = 0; k <= npr; k++) {
1364 t = ths[i] + ((Double_t)k) * t1;
1365 xp[i][k] = TMath::Abs(r[i]) * CosD(t) + xc[i];
1366 yp[i][k] = TMath::Abs(r[i]) * SinD(t) + yc[i];
1368 cout << "{" << xp[i][k] << "," << yp[i][k];
1369 if (GetDebug(4)) cout << "," << t;
1371 } // end if GetDebug
1373 if(GetDebug(3)) cout << endl;
1375 if(GetDebug(3)) cout << "{" << xp[0][0] << ", " << yp[0][0];
1376 if(GetDebug(4)) cout << "," << ths[0];
1377 if(GetDebug(3)) cout << "}}" << endl;
1380 //______________________________________________________________________
1381 TGeoVolume* AliITSv11GeometrySPD::CreateLadder(Int_t layer,TArrayD &sizes,
1382 TGeoManager *mgr) const
1385 // Creates the "ladder" = silicon sensor + 5 chips.
1386 // Returns a TGeoVolume containing the following components:
1387 // - the sensor (TGeoBBox), whose name depends on the layer
1388 // - 5 identical chips (TGeoBBox)
1389 // - a guard ring around the sensor (subtraction of TGeoBBoxes),
1390 // which is separated from the rest of sensor because it is not
1392 // - bump bondings (TGeoBBox stripes for the whole width of the
1393 // sensor, one per column).
1396 // 1 - the owner layer (MUST be 1 or 2 or a fatal error is raised)
1397 // 2 - a TArrayD passed by reference, which will contain relevant
1398 // dimensions related to this object:
1399 // size[0] = 'thickness' (the smallest dimension)
1400 // size[1] = 'length' (the direction along the ALICE Z axis)
1401 // size[2] = 'width' (extension in the direction perp. to the
1403 // 3 - the used TGeoManager
1405 // ** CRITICAL CHECK **
1406 // layer number can be ONLY 1 or 2
1407 if (layer != 1 && layer != 2) AliFatal("Layer number MUST be 1 or 2");
1410 TGeoMedium *medAir = GetMedium("AIR$",mgr);
1411 TGeoMedium *medSPDSiChip = GetMedium("SPD SI CHIP$",mgr); // SPD SI CHIP
1412 TGeoMedium *medSi = GetMedium("SI$",mgr);
1413 TGeoMedium *medBumpBond = GetMedium("COPPER$",mgr); // ??? BumpBond
1416 Double_t chipThickness = fgkmm * 0.150;
1417 Double_t chipWidth = fgkmm * 15.950;
1418 Double_t chipLength = fgkmm * 13.600;
1419 Double_t chipSpacing = fgkmm * 0.400; // separation of chips along Z
1420 Double_t sensThickness = fgkmm * 0.200;
1421 Double_t sensLength = fgkmm * 69.600;
1422 Double_t sensWidth = fgkmm * 12.800;
1423 Double_t guardRingWidth = fgkmm * 0.560; // a border of this thickness
1424 // all around the sensor
1425 Double_t bbLength = fgkmm * 0.042;
1426 Double_t bbWidth = sensWidth;
1427 Double_t bbThickness = fgkmm * 0.012;
1428 Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
1429 // compute the size of the container volume which
1430 // will also be returned in the referenced TArrayD;
1431 // for readability, they are linked by reference to a more meaningful name
1433 Double_t &thickness = sizes[0];
1434 Double_t &length = sizes[1];
1435 Double_t &width = sizes[2];
1436 // the container is a box which exactly enclose all the stuff;
1438 length = sensLength + 2.0*guardRingWidth;
1439 thickness = sensThickness + chipThickness + bbThickness;
1442 // While creating this volume, since it is a sensitive volume,
1443 // we must respect some standard criteria for its local reference frame.
1444 // Local X must correspond to x coordinate of the sensitive volume:
1445 // this means that we are going to create the container with a local
1446 // reference system that is **not** in the middle of the box.
1447 // This is accomplished by calling the shape constructor with an
1448 // additional option ('originShift'):
1449 Double_t xSens = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
1450 Double_t originShift[3] = {-xSens, 0., 0.};
1451 TGeoBBox *shapeContainer = new TGeoBBox(0.5*width,0.5*thickness,
1452 0.5*length,originShift);
1453 // then the volume is made of air, and using this shape
1454 TGeoVolume *container = new TGeoVolume(Form("ITSSPDlay%d-Ladder",layer),
1455 shapeContainer, medAir);
1456 // the chip is a common box
1457 TGeoVolume *volChip = mgr->MakeBox("ITSSPDchip",medSPDSiChip,
1458 0.5*chipWidth,0.5*chipThickness,0.5*chipLength);
1459 // the sensor as well
1460 TGeoVolume *volSens = mgr->MakeBox(GetSenstiveVolumeName(layer),medSi,
1461 0.5*sensWidth,0.5*sensThickness,0.5*sensLength);
1462 // the guard ring shape is the subtraction of two boxes with the
1464 TGeoBBox *shIn = new TGeoBBox(0.5*sensWidth,sensThickness,0.5*sensLength);
1465 TGeoBBox *shOut = new TGeoBBox(0.5*sensWidth+guardRingWidth,
1466 0.5*sensThickness,0.5*sensLength+guardRingWidth);
1467 shIn->SetName("ITSSPDinnerBox");
1468 shOut->SetName("ITSSPDouterBox");
1469 TGeoCompositeShape *shBorder = new TGeoCompositeShape(
1470 "ITSSPDgaurdRingBorder",Form("%s-%s",shOut->GetName(),shIn->GetName()));
1471 TGeoVolume *volBorder = new TGeoVolume("ITSSPDgaurdRing",shBorder,medSi);
1472 // bump bonds for one whole column
1473 TGeoVolume *volBB = mgr->MakeBox("ITSSPDbb",medBumpBond,0.5*bbWidth,
1474 0.5*bbThickness,0.5*bbLength);
1475 // set colors of all objects for visualization
1476 volSens->SetLineColor(kYellow + 1);
1477 volChip->SetLineColor(kGreen);
1478 volBorder->SetLineColor(kYellow + 3);
1479 volBB->SetLineColor(kGray);
1482 // sensor is translated along thickness (X) and width (Y)
1483 Double_t ySens = 0.5 * (thickness - sensThickness);
1484 Double_t zSens = 0.0;
1485 // we want that the x of the ladder is the same as the one of
1486 // its sensitive volume
1487 TGeoTranslation *trSens = new TGeoTranslation(0.0, ySens, zSens);
1488 // bump bonds are translated along all axes:
1489 // keep same Y used for sensors, but change the Z
1490 TGeoTranslation *trBB[160];
1492 Double_t y = 0.5 * (thickness - bbThickness) - sensThickness;
1493 Double_t z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
1495 for (i = 0; i < 160; i++) {
1496 trBB[i] = new TGeoTranslation(x, y, z);
1498 case 31:case 63:case 95:case 127:
1499 z += fgkmm * 0.625 + fgkmm * 0.2;
1505 // the chips are translated along the length (Z) and thickness (X)
1506 TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
1508 y = 0.5 * (chipThickness - thickness);
1510 for (i = 0; i < 5; i++) {
1511 z = -0.5*length + guardRingWidth
1512 + (Double_t)i*chipSpacing + ((Double_t)(i) + 0.5)*chipLength;
1513 trChip[i] = new TGeoTranslation(x, y, z);
1516 // add nodes to container
1517 container->AddNode(volSens, 1, trSens);
1518 container->AddNode(volBorder, 1, trSens);
1519 for (i = 0; i < 160; i++) container->AddNode(volBB,i+1,trBB[i]);
1520 for (i = 0; i < 5; i++) container->AddNode(volChip,i+3,trChip[i]);
1521 // return the container
1526 //______________________________________________________________________
1527 TGeoVolume* AliITSv11GeometrySPD::CreateLadder
1528 (Int_t layer, TArrayD &sizes, TGeoManager *mgr) const
1531 // Creates the "ladder" = silicon sensor + 5 chips.
1532 // Returns a TGeoVolume containing the following components:
1533 // - the sensor (TGeoBBox), whose name depends on the layer
1534 // - 5 identical chips (TGeoBBox)
1535 // - a guard ring around the sensor (subtraction of TGeoBBoxes),
1536 // which is separated from the rest of sensor because it is not
1538 // - bump bondings (TGeoBBox stripes for the whole width of the
1539 // sensor, one per column).
1542 // 1 - the owner layer (MUST be 1 or 2 or a fatal error is raised)
1543 // 2 - a TArrayD passed by reference, which will contain relevant
1544 // dimensions related to this object:
1545 // size[0] = 'thickness' (the smallest dimension)
1546 // size[1] = 'length' (the direction along the ALICE Z axis)
1547 // size[2] = 'width' (extension in the direction perp. to the
1549 // 3 - the used TGeoManager
1551 // ** CRITICAL CHECK ******************************************************
1552 // layer number can be ONLY 1 or 2
1553 if (layer != 1 && layer != 2) AliFatal("Layer number MUST be 1 or 2");
1555 // ** MEDIA ***************************************************************
1557 TGeoMedium *medAir = GetMedium("AIR$",mgr);
1558 TGeoMedium *medSPDSiChip = GetMedium("SPD SI CHIP$",mgr); // SPD SI CHIP
1559 TGeoMedium *medSi = GetMedium("SI$",mgr);
1560 TGeoMedium *medBumpBond = GetMedium("COPPER$",mgr); // ??? BumpBond
1562 // ** SIZES ***************************************************************
1564 Double_t chipThickness = fgkmm * 0.150;
1565 Double_t chipWidth = fgkmm * 15.950;
1566 Double_t chipLength = fgkmm * 13.600;
1567 Double_t chipSpacing = fgkmm * 0.400; // separation of chips along Z
1568 Double_t sensThickness = fgkmm * 0.200;
1569 Double_t sensLength = fgkmm * 69.600;
1570 Double_t sensWidth = fgkmm * 12.800;
1571 Double_t guardRingWidth = fgkmm * 0.560; // guard ring around sensor
1572 Double_t bbLength = fgkmm * 0.042;
1573 Double_t bbWidth = sensWidth;
1574 Double_t bbThickness = fgkmm * 0.012;
1575 Double_t bbPos = 0.080; // Z position w.r. to left pixel edge
1577 // the three dimensions of the box which contains the ladder
1578 // are returned in the 'sizes' argument, and are used for volumes positionement
1579 // for readability purpose, they are linked by reference to a more meaningful name
1581 Double_t &thickness = sizes[0];
1582 Double_t &length = sizes[1];
1583 Double_t &width = sizes[2];
1584 // the container is a box which exactly enclose all the stuff
1586 length = sensLength + 2.0*guardRingWidth;
1587 thickness = sensThickness + chipThickness + bbThickness;
1589 // ** VOLUMES *************************************************************
1591 // This is a sensitive volume.
1592 // Local X must correspond to x coordinate of the sensitive volume:
1593 // to respect this, the origin of the local reference system
1594 // must be shifted from the middle of the box, using
1595 // an additional option ('originShift') when creating the container shape:
1596 Double_t xSens = 0.5 * (width - sensWidth - 2.0*guardRingWidth);
1597 Double_t originShift[3] = {-xSens, 0., 0.};
1599 // now the container is a TGeoBBox with this shift,
1600 // and the volume is made of air (it does not exist in reality)
1601 TGeoBBox *shLadder = new TGeoBBox(0.5*width, 0.5*thickness, 0.5*length, originShift);
1602 TGeoVolume *vLadder = new TGeoVolume(Form("ITSSPDlay%d-Ladder", layer), shLadder, medAir);
1604 // the chip is a common box
1605 TGeoVolume *vChip = mgr->MakeBox("ITSSPDchip", medSPDSiChip,
1606 0.5*chipWidth, 0.5*chipThickness, 0.5*chipLength);
1608 // to build the sensor with its guard ring, we create a TGeoBBox with the size
1609 // of the sensor + guard ring, and we insert the true sensor into it as an
1610 // internal node: this simplifies the implementation with the same result
1611 TGeoVolume *vSensGuard = mgr->MakeBox(Form("%s-guardRing", GetSenstiveVolumeName(layer)),
1613 0.5*sensWidth + guardRingWidth,
1615 0.5*sensLength + guardRingWidth);
1616 TGeoVolume *vSens = mgr->MakeBox(GetSenstiveVolumeName(layer), medSi,
1617 0.5*sensWidth,0.5*sensThickness,0.5*sensLength);
1618 vSensGuard->AddNode(vSens, 0);
1619 vSensGuard->SetTransparency(50);
1621 // bump bond is a common box for one whole column
1622 TGeoVolume *vBB = mgr->MakeBox("ITSSPDbb", medBumpBond,
1623 0.5*bbWidth, 0.5*bbThickness, 0.5*bbLength);
1625 // set colors of all objects for visualization
1626 vLadder->SetLineColor(kRed);
1627 vSens->SetLineColor(kYellow + 1);
1628 vChip->SetLineColor(kGreen);
1629 vSensGuard->SetLineColor(kYellow + 3);
1630 vBB->SetLineColor(kGray);
1633 // sensor is translated along thickness (Y) and width (X)
1634 Double_t ySens = 0.5 * (thickness - sensThickness);
1635 Double_t zSens = 0.0;
1636 // we want that the x of the ladder is the same as the one of
1637 // its sensitive volume
1638 TGeoTranslation *trSens = new TGeoTranslation(0.0, ySens, zSens);
1639 // bump bonds are translated along all axes:
1640 // keep same Y used for sensors, but change the Z
1641 TGeoTranslation *trBB[160];
1643 Double_t y = 0.5 * (thickness - bbThickness) - sensThickness;
1644 Double_t z = -0.5 * sensLength + guardRingWidth + fgkmm*0.425 - bbPos;
1646 for (i = 0; i < 160; i++) {
1647 trBB[i] = new TGeoTranslation(x, y, z);
1649 case 31:case 63:case 95:case 127:
1650 z += fgkmm * 0.625 + fgkmm * 0.2;
1656 // the chips are translated along the length (Z) and thickness (X)
1657 TGeoTranslation *trChip[5] = {0, 0, 0, 0, 0};
1659 y = 0.5 * (chipThickness - thickness);
1661 for (i = 0; i < 5; i++) {
1662 z = -0.5*length + guardRingWidth
1663 + (Double_t)i*chipSpacing + ((Double_t)(i) + 0.5)*chipLength;
1664 trChip[i] = new TGeoTranslation(x, y, z);
1667 // add nodes to container
1668 vLadder->AddNode(vSensGuard, 1, trSens);
1669 //vLadderAddNode(volBorder, 1, trSens);
1670 for (i = 0; i < 160; i++) vLadder->AddNode(vBB,i+1,trBB[i]);
1671 for (i = 0; i < 5; i++) vLadder->AddNode(vChip,i+3,trChip[i]);
1672 // return the container
1677 //______________________________________________________________________
1678 TGeoVolume* AliITSv11GeometrySPD::CreateClip(TArrayD &sizes,Bool_t isDummy,
1679 TGeoManager *mgr) const
1682 // Creates the carbon fiber clips which are added to the central ladders.
1683 // They have a complicated shape which is approximated by a TGeoXtru
1684 // Implementation of a single clip over an half-stave.
1685 // It has a complicated shape which is approximated to a section like this:
1690 // / 1\\___________________4
1691 // 0 \___________________
1693 // with a finite thickness for all the shape
1694 // Its local reference frame is such that point A corresponds to origin.
1696 Double_t fullLength = fgkmm * 12.6; // = x4 - x0
1697 Double_t flatLength = fgkmm * 5.4; // = x4 - x3
1698 Double_t inclLongLength = fgkmm * 5.0; // = 5-6
1699 Double_t inclShortLength = fgkmm * 2.0; // = 6-7
1700 Double_t fullHeight = fgkmm * 2.8; // = y6 - y3
1701 Double_t thickness = fgkmm * 0.18; // thickness
1702 Double_t totalLength = fgkmm * 52.0; // total length in Z
1703 Double_t holeSize = fgkmm * 5.0; // dimension of cubic
1704 // hole inserted for pt1000
1705 Double_t angle1 = 27.0; // supplementary of angle DCB
1706 Double_t angle2; // angle DCB
1707 Double_t angle3; // angle of GH with vertical
1709 angle2 = 0.5 * (180.0 - angle1);
1710 angle3 = 90.0 - TMath::ACos(fullLength - flatLength -
1711 inclLongLength*TMath::Cos(angle1)) *
1713 angle1 *= TMath::DegToRad();
1714 angle2 *= TMath::DegToRad();
1715 angle3 *= TMath::DegToRad();
1717 Double_t x[8], y[8];
1720 x[1] = x[0] + fullLength - flatLength - inclLongLength*TMath::Cos(angle1);
1721 x[2] = x[0] + fullLength - flatLength;
1722 x[3] = x[0] + fullLength;
1724 x[5] = x[4] - flatLength + thickness * TMath::Cos(angle2);
1729 y[1] = y[0] + inclShortLength * TMath::Cos(angle3);
1730 y[2] = y[1] - inclLongLength * TMath::Sin(angle1);
1732 y[4] = y[3] + thickness;
1734 y[6] = y[1] + thickness;
1735 y[7] = y[0] + thickness;
1738 sizes[0] = totalLength;
1739 sizes[1] = fullHeight;
1746 if(isDummy){// use this argument when on ewant just the
1747 // positions without create any volume
1751 TGeoXtru *shClip = new TGeoXtru(2);
1752 shClip->SetName("ITSSPDshclip");
1753 shClip->DefinePolygon(8, x, y);
1754 shClip->DefineSection(0, -0.5*totalLength, 0., 0., 1.0);
1755 shClip->DefineSection(1, 0.5*totalLength, 0., 0., 1.0);
1757 TGeoBBox *shHole = new TGeoBBox("ITSSPDSHClipHole",0.5*holeSize,
1758 0.5*holeSize,0.5*holeSize);
1759 TGeoTranslation *tr1 = new TGeoTranslation("ITSSPDTRClipHole1",x[2],0.0,
1761 TGeoTranslation *tr2 = new TGeoTranslation("ITSSPDTRClipHole2",x[2],0.0,
1763 TGeoTranslation *tr3 = new TGeoTranslation("ITSSPDTRClipHole3",x[2],0.0,
1765 tr1->RegisterYourself();
1766 tr2->RegisterYourself();
1767 tr3->RegisterYourself();
1769 //TString strExpr("ITSSPDshclip-(");
1770 TString strExpr(shClip->GetName());
1771 strExpr.Append("-(");
1772 strExpr.Append(Form("%s:%s+", shHole->GetName(), tr1->GetName()));
1773 strExpr.Append(Form("%s:%s+", shHole->GetName(), tr2->GetName()));
1774 strExpr.Append(Form("%s:%s)", shHole->GetName(), tr3->GetName()));
1775 TGeoCompositeShape *shClipHole = new TGeoCompositeShape(
1776 "ITSSPDSHClipHoles",strExpr.Data());
1778 TGeoMedium *mat = GetMedium("SPD C (M55J)$", mgr);
1779 TGeoVolume *vClip = new TGeoVolume("ITSSPDclip", shClipHole, mat);
1780 vClip->SetLineColor(kGray + 2);
1782 }//______________________________________________________________________
1783 TGeoCompositeShape* AliITSv11GeometrySPD::CreateGroundingFoilShape
1784 (Int_t itype,Double_t &length,Double_t &width,
1785 Double_t thickness,TArrayD &sizes)
1788 // Creates the typical composite shape of the grounding foil:
1790 // +---------------------------------------------------------+
1792 // | +-----------+ +------------+ 10
1794 // | 3 /-----+ 4 +------+
1801 // This shape is used 4 times: two layers of glue, one in kapton
1802 // and one in aluminum, taking into account that the aliminum
1803 // layer has small differences in the size of some parts.
1805 // In order to overcome problems apparently due to a large number
1806 // of points, the shape creation is done according the following
1808 // 1) a TGeoBBox is created with a size right enough to contain
1809 // the whole shape (0-1-X-13)
1810 // 2) holes are defined as other TGeoBBox which are subtracted
1811 // from the main shape
1812 // 3) a TGeoXtru is defined connecting the points (0-->11-->0)
1813 // and is also subtracted from the main shape
1815 // The argument ("type") is used to choose between all these
1817 // - type = 0 --> kapton layer
1818 // - type = 1 --> aluminum layer
1819 // - type = 2 --> glue layer between support and GF
1820 // - type = 3 --> glue layer between GF and ladders
1821 // Returns: a TGeoCompositeShape which will then be used to shape
1822 // several volumes. Since TGeoXtru is used, the local reference
1823 // frame of this object has X horizontal and Y vertical w.r to
1824 // the shape drawn above, and Z axis going perpendicularly to the screen.
1825 // This is not the correct reference for the half stave, for which
1826 // the "long" dimension is Z and the "short" is X, while Y goes in
1827 // the direction of thickness. This will imply some rotations when
1828 // using the volumes created with this shape.
1830 // suffix to differentiate names
1833 // size of the virtual box containing exactly this volume
1834 length = fgkmm * 243.18;
1835 width = fgkmm * 15.95;
1837 length -= fgkmm * 0.4;
1838 width -= fgkmm * 0.4;
1839 } // end if itype==1
1842 sprintf(type,"Kap");
1845 sprintf(type,"Alu");
1848 sprintf(type,"Glue1");
1851 sprintf(type,"Glue2");
1854 // we divide the shape in several slices along the horizontal
1855 // direction (local X) here we define define the length of all
1856 // sectors (from leftmost to rightmost)
1858 Double_t sliceLength[] = { 140.71, 2.48, 26.78, 4.00,
1859 10.00, 24.40, 10.00, 24.81 };
1860 for (i = 0; i < 8; i++) sliceLength[i] *= fgkmm;
1862 sliceLength[0] -= fgkmm * 0.2;
1863 sliceLength[4] -= fgkmm * 0.2;
1864 sliceLength[5] += fgkmm * 0.4;
1865 sliceLength[6] -= fgkmm * 0.4;
1866 } // end if itype ==1
1868 // as shown in the drawing, we have four different widths
1869 // (along local Y) in this shape:
1870 Double_t widthMax = fgkmm * 15.95;
1871 Double_t widthMed1 = fgkmm * 15.00;
1872 Double_t widthMed2 = fgkmm * 11.00;
1873 Double_t widthMin = fgkmm * 4.40;
1875 widthMax -= fgkmm * 0.4;
1876 widthMed1 -= fgkmm * 0.4;
1877 widthMed2 -= fgkmm * 0.4;
1878 widthMin -= fgkmm * 0.4;
1879 } // end if itype==1
1881 // create the main shape
1882 TGeoBBox *shGroundFull = 0;
1883 shGroundFull = new TGeoBBox(Form("ITSSPDSHgFoil%sFull", type),
1884 0.5*length,0.5*width, 0.5*thickness);
1886 // create the polygonal shape to be subtracted to give the correct
1887 // shape to the borders its vertices are defined in sugh a way that
1888 // this polygonal will be placed in the correct place considered
1889 // that the origin of the local reference frame is in the center
1890 // of the main box: we fix the starting point at the lower-left
1891 // edge of the shape (point 12), and add all points in order,
1892 // following a clockwise rotation
1894 Double_t x[13], y[13];
1895 x[ 0] = -0.5 * length + sliceLength[0];
1896 y[ 0] = -0.5 * widthMax;
1898 x[ 1] = x[0] + sliceLength[1];
1899 y[ 1] = y[0] + (widthMax - widthMed1);
1901 x[ 2] = x[1] + sliceLength[2];
1904 x[ 3] = x[2] + sliceLength[3];
1905 y[ 3] = y[2] + (widthMed1 - widthMed2);
1907 x[ 4] = x[3] + sliceLength[4];
1911 y[ 5] = y[4] + (widthMed2 - widthMin);
1913 x[ 6] = x[5] + sliceLength[5];
1919 x[ 8] = x[7] + sliceLength[6];
1925 x[10] = x[9] + sliceLength[7] + 0.5;
1935 TGeoXtru *shGroundXtru = new TGeoXtru(2);
1936 shGroundXtru->SetName(Form("ITSSPDSHgFoil%sXtru", type));
1937 shGroundXtru->DefinePolygon(13, x, y);
1938 shGroundXtru->DefineSection(0, -thickness, 0., 0., 1.0);
1939 shGroundXtru->DefineSection(1, thickness, 0., 0., 1.0);
1941 // define a string which will express the algebric operations among volumes
1942 // and add the subtraction of this shape from the main one
1943 TString strComposite(Form("ITSSPDSHgFoil%sFull-(%s+", type,
1944 shGroundXtru->GetName()));
1946 // define the holes according to size information coming from drawings:
1947 Double_t holeLength = fgkmm * 10.00;
1948 Double_t holeWidth = fgkmm * 7.50;
1949 Double_t holeSepX0 = fgkmm * 7.05; // separation between center
1950 // of first hole and left border
1951 Double_t holeSepXC = fgkmm * 14.00; // separation between the centers
1952 // of two consecutive holes
1953 Double_t holeSepX1 = fgkmm * 15.42; // separation between centers of
1955 Double_t holeSepX2 = fgkmm * 22.00; // separation between centers of
1956 // 10th and 11th hole
1958 holeSepX0 -= fgkmm * 0.2;
1959 holeLength += fgkmm * 0.4;
1960 holeWidth += fgkmm * 0.4;
1961 } // end if itype==1
1963 sizes[0] = holeLength;
1964 sizes[1] = holeWidth;
1965 sizes[2] = holeSepX0;
1966 sizes[3] = holeSepXC;
1967 sizes[4] = holeSepX1;
1968 sizes[5] = holeSepX2;
1969 sizes[6] = fgkmm * 4.40;
1971 // X position of hole center (will change for each hole)
1972 Double_t holeX = -0.5*length;
1973 // Y position of center of all holes (= 4.4 mm from upper border)
1974 Double_t holeY = 0.5*(width - holeWidth) - widthMin;
1976 // create a shape for the holes (common)
1977 TGeoBBox *shHole = 0;
1978 shHole = new TGeoBBox(Form("ITSSPD%sGfoilHole", type),0.5*holeLength,
1979 0.5*holeWidth, thickness);
1981 // insert the holes in the XTRU shape:
1982 // starting from the first value of X, they are simply
1983 // shifted along this axis
1985 TGeoTranslation *transHole[11];
1986 for (i = 0; i < 11; i++) {
1987 // set the position of the hole, depending on index
1998 } // end if else if's
1999 //cout << i << " --> X = " << holeX << endl;
2000 sprintf(name,"ITSSPDTRgFoil%sHole%d", type, i);
2001 transHole[i] = new TGeoTranslation(name, holeX, holeY, 0.0);
2002 transHole[i]->RegisterYourself();
2003 strComposite.Append(Form("ITSSPD%sGfoilHole:%s", type, name));
2004 if (i < 10) strComposite.Append("+"); else strComposite.Append(")");
2007 // create composite shape
2008 TGeoCompositeShape *shGround = new TGeoCompositeShape(
2009 Form("ITSSPDSHgFoil%s", type), strComposite.Data());
2013 //______________________________________________________________________
2014 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateGroundingFoil(Bool_t isRight,
2015 TArrayD &sizes, TGeoManager *mgr)
2018 // Create a volume containing all parts of the grounding foil a
2019 // for a half-stave.
2020 // It consists of 4 layers with the same shape but different thickness:
2021 // 1) a layer of glue
2022 // 2) the aluminum layer
2023 // 3) the kapton layer
2024 // 4) another layer of glue
2027 // 1: a boolean value to know if it is the grounding foir for
2028 // the right or left side
2029 // 2: a TArrayD which will contain the dimension of the container box:
2030 // - size[0] = length along Z (the beam line direction)
2031 // - size[1] = the 'width' of the stave, which defines, together
2032 // with Z, the plane of the carbon fiber support
2033 // - size[2] = 'thickness' (= the direction along which all
2034 // stave components are superimposed)
2035 // 3: the TGeoManager
2037 // The return value is a TGeoBBox volume containing all grounding
2039 // to avoid strange behaviour of the geometry manager,
2040 // create a suffix to be used in the names of all shapes
2043 if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
2044 // this volume will be created in order to ease its placement in
2045 // the half-stave; then, it is added here the small distance of
2046 // the "central" edge of each volume from the Z=0 plane in the stave
2047 // reference (which coincides with ALICE one)
2048 Double_t dist = fgkmm * 0.71;
2051 TGeoMedium *medKap = GetMedium("SPD KAPTON(POLYCH2)$", mgr);
2052 TGeoMedium *medAlu = GetMedium("AL$", mgr);
2053 TGeoMedium *medGlue = GetMedium("EPOXY$", mgr); //??? GLUE_GF_SUPPORT
2055 // compute the volume shapes (thicknesses change from one to the other)
2056 Double_t kpLength, kpWidth, alLength, alWidth;
2057 TArrayD kpSize, alSize, glSize;
2058 Double_t kpThickness = fgkmm * 0.04;
2059 Double_t alThickness = fgkmm * 0.01;
2060 //cout << "AL THICKNESS" << alThickness << endl;
2061 //Double_t g0Thickness = fgkmm * 0.1175 - fgkGapHalfStave;
2062 //Double_t g1Thickness = fgkmm * 0.1175 - fgkGapLadder;
2063 Double_t g0Thickness = fgkmm * 0.1275 - fgkGapHalfStave;
2064 Double_t g1Thickness = fgkmm * 0.1275 - fgkGapLadder;
2065 TGeoCompositeShape *kpShape = CreateGroundingFoilShape(0,kpLength,kpWidth,
2066 kpThickness, kpSize);
2067 TGeoCompositeShape *alShape = CreateGroundingFoilShape(1,alLength,alWidth,
2068 alThickness, alSize);
2069 TGeoCompositeShape *g0Shape = CreateGroundingFoilShape(2,kpLength,kpWidth,
2070 g0Thickness, glSize);
2071 TGeoCompositeShape *g1Shape = CreateGroundingFoilShape(3,kpLength,kpWidth,
2072 g1Thickness, glSize);
2073 // create the component volumes and register their sizes in the
2074 // passed arrays for readability reasons, some reference variables
2075 // explicit the meaning of the array slots
2076 TGeoVolume *kpVol = new TGeoVolume(Form("ITSSPDgFoilKap%s",suf),
2078 TGeoVolume *alVol = new TGeoVolume(Form("ITSSPDgFoilAlu%s",suf),
2080 TGeoVolume *g0Vol = new TGeoVolume(Form("ITSSPDgFoilGlue%s",suf),
2082 TGeoVolume *g1Vol = new TGeoVolume(Form("ITSSPDgFoilGlue%s",suf),
2084 // set colors for the volumes
2085 kpVol->SetLineColor(kRed);
2086 alVol->SetLineColor(kGray);
2087 g0Vol->SetLineColor(kYellow);
2088 g1Vol->SetLineColor(kYellow);
2089 // create references for the final size object
2090 if (sizes.GetSize() != 3) sizes.Set(3);
2091 Double_t &fullThickness = sizes[0];
2092 Double_t &fullLength = sizes[1];
2093 Double_t &fullWidth = sizes[2];
2094 // kapton leads the larger dimensions of the foil
2095 // (including the cited small distance from Z=0 stave reference plane)
2096 // the thickness is the sum of the ones of all components
2097 fullLength = kpLength + dist;
2098 fullWidth = kpWidth;
2099 fullThickness = kpThickness + alThickness + g0Thickness + g1Thickness;
2100 // create the container
2101 // TGeoMedium *air = GetMedium("AIR$", mgr);
2102 TGeoVolumeAssembly *container = new TGeoVolumeAssembly(Form("ITSSPDgFOIL-%s",suf));
2103 // TGeoVolume *container = mgr->MakeBox(Form("ITSSPDgFOIL-%s",suf),
2104 // air, 0.5*fullThickness, 0.5*fullWidth, 0.5*fullLength);
2105 // create the common correction rotation (which depends of what side
2107 TGeoRotation *rotCorr = new TGeoRotation(*gGeoIdentity);
2108 if (isRight) rotCorr->RotateY(90.0);
2109 else rotCorr->RotateY(-90.0);
2110 // compute the translations, which are in the length and
2111 // thickness directions
2112 Double_t x, y, z, shift = 0.0;
2113 if (isRight) shift = dist;
2115 x = -0.5*(fullThickness - g0Thickness);
2116 z = 0.5*(fullLength - kpLength) - shift;
2117 TGeoCombiTrans *glTrans0 = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2119 x += 0.5*(g0Thickness + kpThickness);
2120 TGeoCombiTrans *kpTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2122 x += 0.5*(kpThickness + alThickness);
2123 z = 0.5*(fullLength - alLength) - shift - 0.5*(kpLength - alLength);
2124 TGeoCombiTrans *alTrans = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2126 x += 0.5*(alThickness + g1Thickness);
2127 z = 0.5*(fullLength - kpLength) - shift;
2128 TGeoCombiTrans *glTrans1 = new TGeoCombiTrans(x, 0.0, z, rotCorr);
2130 //cout << fgkGapHalfStave << endl;
2131 //cout << g0Thickness << endl;
2132 //cout << kpThickness << endl;
2133 //cout << alThickness << endl;
2134 //cout << g1Thickness << endl;
2137 container->SetLineColor(kMagenta-10);
2138 container->AddNode(kpVol, 1, kpTrans);
2139 container->AddNode(alVol, 1, alTrans);
2140 container->AddNode(g0Vol, 1, glTrans0);
2141 container->AddNode(g1Vol, 2, glTrans1);
2142 // to add the grease we remember the sizes of the holes, stored as
2143 // additional parameters in the kapton layer size:
2144 // - sizes[3] = hole length
2145 // - sizes[4] = hole width
2146 // - sizes[5] = position of first hole center
2147 // - sizes[6] = standard separation between holes
2148 // - sizes[7] = separation between 5th and 6th hole
2149 // - sizes[8] = separation between 10th and 11th hole
2150 // - sizes[9] = separation between the upper hole border and
2152 Double_t holeLength = kpSize[0];
2153 Double_t holeWidth = kpSize[1];
2154 Double_t holeFirstZ = kpSize[2];
2155 Double_t holeSepZ = kpSize[3];
2156 Double_t holeSep5th6th = kpSize[4];
2157 Double_t holeSep10th11th = kpSize[5];
2158 Double_t holeSepY = kpSize[6];
2160 // Grease has not been defined to date. Need much more information
2161 // no this material!
2162 TGeoMedium *grease = GetMedium("SPD KAPTON(POLYCH2)$", mgr); // ??? GREASE
2163 TGeoVolume *hVol = mgr->MakeBox("ITSSPDGrease", grease,
2164 0.5*fullThickness, 0.5*holeWidth, 0.5*holeLength);
2165 hVol->SetLineColor(kBlue);
2166 // displacement of volumes in the container
2167 Int_t idx = 1; // copy numbers start from 1.
2169 y = 0.5*(fullWidth - holeWidth) - holeSepY;
2170 if (isRight) z = holeFirstZ - 0.5*fullLength + dist;
2171 else z = 0.5*fullLength - holeFirstZ - dist;
2172 for (Int_t i = 0; i < 11; i++) {
2173 TGeoTranslation *t = 0;
2174 t = new TGeoTranslation(x, y, -z);
2175 container->AddNode(hVol, idx++, t);
2176 if (i < 4) shift = holeSepZ;
2177 else if (i == 4) shift = holeSep5th6th;
2178 else if (i < 9) shift = holeSepZ;
2179 else shift = holeSep10th11th;
2180 if (isRight) z += shift;
2185 //___________________________________________________________________
2186 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateMCM(Bool_t isRight,
2187 TArrayD &sizes, TGeoManager *mgr) const
2190 // Create a TGeoAssembly containing all the components of the MCM.
2191 // The TGeoVolume container is rejected due to the possibility of overlaps
2192 // when placing this object on the carbon fiber sector.
2193 // The assembly contains:
2194 // - the thin part of the MCM (integrated circuit)
2195 // - the MCM chips (specifications from EDMS)
2196 // - the cap which covers the zone where chips are bound to MCM
2198 // The local reference frame of this assembly is defined in such a way
2199 // that all volumes are contained in a virtual box whose center
2200 // is placed exactly in the middle of the occupied space w.r to all
2201 // directions. This will ease the positioning of this object in the
2202 // half-stave. The sizes of this virtual box are stored in
2203 // the array passed by reference.
2206 // - a boolean flag to know if this is the "left" or "right" MCM, when
2207 // looking at the stave from above (i.e. the direction from which
2208 // one sees bus over ladders over grounding foil) and keeping the
2209 // continuous border in the upper part, one sees the thicker part
2210 // on the left or right.
2211 // - an array passed by reference which will contain the size of
2212 // the virtual container.
2213 // - a pointer to the used TGeoManager.
2216 // to distinguish the "left" and "right" objects, a suffix is created
2218 if (isRight) strcpy(suf, "R"); else strcpy(suf, "L");
2221 TGeoMedium *medBase = GetMedium("SPD KAPTON(POLYCH2)$",mgr);// ??? MCM BASE
2222 TGeoMedium *medChip = GetMedium("SPD SI CHIP$",mgr);
2223 TGeoMedium *medCap = GetMedium("AL$",mgr);
2225 // The shape of the MCM is divided into 3 sectors with different
2226 // widths (Y) and lengths (X), like in this sketch:
2229 // +---------------------+-----------------------------------+
2231 // | 6 sect 1 /-------------------+
2232 // | sect 0 /--------------/ 3
2233 // +--------------------/ 5
2236 // the inclination of all oblique borders (6-7, 4-5) is always 45 degrees.
2237 // From drawings we can parametrize the dimensions of all these sectors,
2238 // then the shape of this part of the MCM is implemented as a
2239 // TGeoXtru centerd in the virtual XY space.
2240 // The first step is definig the relevant sizes of this shape:
2242 Double_t mcmThickness = fgkmm * 0.35;
2243 Double_t sizeXtot = fgkmm * 105.6; // total distance (0-2)
2244 // resp. 7-8, 5-6 and 3-4
2245 Double_t sizeXsector[3] = {fgkmm * 28.4, fgkmm * 41.4, fgkmm * 28.8};
2246 // resp. 0-8, 1-6 and 2-3
2247 Double_t sizeYsector[3] = {fgkmm * 15.0, fgkmm * 11.0, fgkmm * 8.0};
2248 Double_t sizeSep01 = fgkmm * 4.0; // x(6)-x(7)
2249 Double_t sizeSep12 = fgkmm * 3.0; // x(4)-x(5)
2251 // define sizes of chips (last is the thickest)
2252 Double_t chipLength[5] = { 4.00, 6.15, 3.85, 5.60, 18.00 };
2253 Double_t chipWidth[5] = { 3.00, 4.10, 3.85, 5.60, 5.45 };
2254 Double_t chipThickness[5] = { 0.60, 0.30, 0.30, 1.00, 1.20 };
2256 name[0] = "ITSSPDanalog";
2257 name[1] = "ITSSPDpilot";
2258 name[2] = "ITSSPDgol";
2259 name[3] = "ITSSPDrx40";
2260 name[4] = "ITSSPDoptical";
2261 Color_t color[5] = { kCyan, kGreen, kYellow, kBlue, kOrange };
2263 // define the sizes of the cover
2264 Double_t capThickness = fgkmm * 0.3;
2265 Double_t capHeight = fgkmm * 1.7;
2267 // compute the total size of the virtual container box
2269 Double_t &thickness = sizes[0];
2270 Double_t &length = sizes[1];
2271 Double_t &width = sizes[2];
2273 width = sizeYsector[0];
2274 thickness = mcmThickness + capHeight;
2276 // define all the relevant vertices of the polygon
2277 // which defines the transverse shape of the MCM.
2278 // These values are used to several purposes, and
2279 // for each one, some points must be excluded
2280 Double_t xRef[9], yRef[9];
2281 xRef[0] = -0.5*sizeXtot;
2282 yRef[0] = 0.5*sizeYsector[0];
2283 xRef[1] = xRef[0] + sizeXsector[0] + sizeSep01;
2288 yRef[3] = yRef[2] - sizeYsector[2];
2289 xRef[4] = xRef[3] - sizeXsector[2];
2291 xRef[5] = xRef[4] - sizeSep12;
2292 yRef[5] = yRef[4] - sizeSep12;
2293 xRef[6] = xRef[5] - sizeXsector[1];
2295 xRef[7] = xRef[6] - sizeSep01;
2296 yRef[7] = yRef[6] - sizeSep01;
2300 // the above points are defined for the "right" MCM (if ve view the
2301 // stave from above) in order to change to the "left" one, we must
2302 // change the sign to all X values:
2303 if (isRight) for (i = 0; i < 9; i++) xRef[i] = -xRef[i];
2305 // the shape of the MCM and glue layer are done excluding point 1,
2306 // which is not necessary and cause the geometry builder to get confused
2308 Double_t xBase[8], yBase[8];
2309 for (i = 0; i < 9; i++) {
2310 if (i == 1) continue;
2316 // the MCM cover is superimposed over the zones 1 and 2 only
2317 Double_t xCap[6], yCap[6];
2319 for (i = 1; i <= 6; i++) {
2325 // define positions of chips,
2326 // which must be added to the bottom-left corner of MCM
2327 // and divided by 1E4;
2328 Double_t chipX[5], chipY[5];
2352 for (i = 0; i < 5; i++) {
2353 chipX[i] *= 0.00001;
2354 chipY[i] *= 0.00001;
2356 chipX[i] += xRef[3];
2357 chipY[i] += yRef[3];
2359 chipX[i] += xRef[8];
2360 chipY[i] += yRef[8];
2361 } // end for isRight
2362 chipLength[i] *= fgkmm;
2363 chipWidth[i] *= fgkmm;
2364 chipThickness[i] *= fgkmm;
2367 // create shapes for MCM
2369 TGeoXtru *shBase = new TGeoXtru(2);
2370 z1 = -0.5*thickness;
2371 z2 = z1 + mcmThickness;
2372 shBase->DefinePolygon(8, xBase, yBase);
2373 shBase->DefineSection(0, z1, 0., 0., 1.0);
2374 shBase->DefineSection(1, z2, 0., 0., 1.0);
2376 // create volumes of MCM
2377 TGeoVolume *volBase = new TGeoVolume("ITSSPDbase", shBase, medBase);
2378 volBase->SetLineColor(kRed);
2380 // to create the border of the MCM cover, it is required the
2381 // subtraction of two shapes the outer is created using the
2382 // reference points defined here
2383 TGeoXtru *shCapOut = new TGeoXtru(2);
2384 shCapOut->SetName(Form("ITSSPDshCAPOUT%s", suf));
2386 z2 = z1 + capHeight - capThickness;
2387 shCapOut->DefinePolygon(6, xCap, yCap);
2388 shCapOut->DefineSection(0, z1, 0., 0., 1.0);
2389 shCapOut->DefineSection(1, z2, 0., 0., 1.0);
2390 // the inner is built similarly but subtracting the thickness
2392 Double_t xin[6], yin[6];
2395 cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
2396 xin[0] = xCap[0] + capThickness;
2397 yin[0] = yCap[0] - capThickness;
2398 xin[1] = xCap[1] - capThickness;
2401 yin[2] = yCap[2] + capThickness;
2402 xin[3] = xCap[3] - capThickness*cs;
2404 xin[4] = xin[3] - sizeSep12;
2405 yin[4] = yCap[4] + capThickness;
2410 cs = TMath::Cos( 0.5*(TMath::Pi() - angle*TMath::DegToRad()) );
2411 xin[0] = xCap[0] - capThickness;
2412 yin[0] = yCap[0] - capThickness;
2413 xin[1] = xCap[1] + capThickness;
2416 yin[2] = yCap[2] + capThickness;
2417 xin[3] = xCap[3] - capThickness*cs;
2419 xin[4] = xin[3] + sizeSep12;
2420 yin[4] = yCap[4] + capThickness;
2423 } // end if !isRight
2424 TGeoXtru *shCapIn = new TGeoXtru(2);
2425 shCapIn->SetName(Form("ITSSPDshCAPIN%s", suf));
2426 shCapIn->DefinePolygon(6, xin, yin);
2427 shCapIn->DefineSection(0, z1 - 0.01, 0., 0., 1.0);
2428 shCapIn->DefineSection(1, z2 + 0.01, 0., 0., 1.0);
2430 TGeoCompositeShape *shCapBorder = new TGeoCompositeShape(
2431 Form("ITSSPDshBORDER%s", suf),
2432 Form("%s-%s", shCapOut->GetName(),
2433 shCapIn->GetName()));
2435 TGeoVolume *volCapBorder = new TGeoVolume("ITSSPDcapBoarder",
2436 shCapBorder,medCap);
2437 volCapBorder->SetLineColor(kGreen);
2438 // finally, we create the top of the cover, which has the same
2439 // shape of outer border and a thickness equal of the one othe
2441 TGeoXtru *shCapTop = new TGeoXtru(2);
2443 z2 = z1 + capThickness;
2444 shCapTop->DefinePolygon(6, xCap, yCap);
2445 shCapTop->DefineSection(0, z1, 0., 0., 1.0);
2446 shCapTop->DefineSection(1, z2, 0., 0., 1.0);
2447 TGeoVolume *volCapTop = new TGeoVolume("ITSSPDcapTop", shCapTop, medCap);
2448 volCapTop->SetLineColor(kBlue);
2450 // create container assembly with right suffix
2451 TGeoVolumeAssembly *mcmAssembly = new TGeoVolumeAssembly(
2452 Form("ITSSPDmcm%s", suf));
2455 mcmAssembly->AddNode(volBase, 1, gGeoIdentity);
2457 for (i = 0; i < 5; i++) {
2458 TGeoVolume *box = gGeoManager->MakeBox(name[i],medChip,
2459 0.5*chipLength[i], 0.5*chipWidth[i], 0.5*chipThickness[i]);
2460 TGeoTranslation *tr = new TGeoTranslation(chipX[i],chipY[i],
2461 0.5*(-thickness + chipThickness[i]) + mcmThickness);
2462 box->SetLineColor(color[i]);
2463 mcmAssembly->AddNode(box, 1, tr);
2466 mcmAssembly->AddNode(volCapBorder, 1, gGeoIdentity);
2468 mcmAssembly->AddNode(volCapTop, 1, gGeoIdentity);
2474 //__________________________________________________________________________________________
2475 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBus
2476 (Bool_t isRight, TArrayD &sizes, TGeoManager *mgr) const
2479 // The pixel bus is implemented as a TGeoBBox with some objects on it,
2480 // which could affect the particle energy loss.
2482 // In order to avoid confusion, the bus is directly displaced
2483 // according to the axis orientations which are used in the final stave:
2484 // X --> thickness direction
2485 // Y --> width direction
2486 // Z --> length direction
2493 TGeoMedium *medBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
2494 TGeoMedium *medPt1000 = GetMedium("CERAMICS$",mgr); // ??? PT1000
2496 TGeoMedium *medCap = GetMedium("SDD X7R capacitors$",mgr);
2498 // TGeoMedium *medRes = GetMedium("SDD X7R capacitors$",mgr);
2499 TGeoMedium *medRes = GetMedium("ALUMINUM$",mgr);
2500 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2501 // ** SIZES & POSITIONS **
2502 Double_t busLength = 170.501 * fgkmm; // length of plane part
2503 Double_t busWidth = 13.800 * fgkmm; // width
2504 Double_t busThickness = 0.280 * fgkmm; // thickness
2505 Double_t pt1000Length = fgkmm * 1.50;
2506 Double_t pt1000Width = fgkmm * 3.10;
2507 Double_t pt1000Thickness = fgkmm * 0.60;
2508 Double_t pt1000Y, pt1000Z[10];// position of the pt1000's along the bus
2509 Double_t capLength = fgkmm * 2.55;
2510 Double_t capWidth = fgkmm * 1.50;
2511 Double_t capThickness = fgkmm * 1.35;
2512 Double_t capY[2], capZ[2];
2514 Double_t resLength = fgkmm * 2.20;
2515 Double_t resWidth = fgkmm * 0.80;
2516 Double_t resThickness = fgkmm * 0.35;
2517 Double_t resY[2], resZ[2];
2519 Double_t extThickness = fgkmm * 0.25;
2520 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2521 Double_t ext2Length = fgkmm * (285.0 - ext1Length + extThickness);
2522 Double_t extWidth = fgkmm * 11.0;
2523 Double_t extHeight = fgkmm * 2.5;
2526 // position of pt1000, resistors and capacitors depends on the
2527 // bus if it's left or right one
2530 pt1000Z[0] = 66160.;
2531 pt1000Z[1] = 206200.;
2532 pt1000Z[2] = 346200.;
2533 pt1000Z[3] = 486200.;
2534 pt1000Z[4] = 626200.;
2535 pt1000Z[5] = 776200.;
2536 pt1000Z[6] = 916200.;
2537 pt1000Z[7] = 1056200.;
2538 pt1000Z[8] = 1196200.;
2539 pt1000Z[9] = 1336200.;
2550 pt1000Z[0] = 319700.;
2551 pt1000Z[1] = 459700.;
2552 pt1000Z[2] = 599700.;
2553 pt1000Z[3] = 739700.;
2554 pt1000Z[4] = 879700.;
2555 pt1000Z[5] = 1029700.;
2556 pt1000Z[6] = 1169700.;
2557 pt1000Z[7] = 1309700.;
2558 pt1000Z[8] = 1449700.;
2559 pt1000Z[9] = 1589700.;
2570 pt1000Y *= 1E-4 * fgkmm;
2571 for (i = 0; i < 10; i++) {
2572 pt1000Z[i] *= 1E-4 * fgkmm;
2574 capZ[i] *= 1E-4 * fgkmm;
2575 capY[i] *= 1E-4 * fgkmm;
2576 resZ[i] *= 1E-4 * fgkmm;
2577 resY[i] *= 1E-4 * fgkmm;
2581 Double_t &fullLength = sizes[1];
2582 Double_t &fullWidth = sizes[2];
2583 Double_t &fullThickness = sizes[0];
2584 fullLength = busLength;
2585 fullWidth = busWidth;
2586 // add the thickness of the thickest component on bus (capacity)
2587 fullThickness = busThickness + capThickness;
2589 TGeoVolumeAssembly *container = new TGeoVolumeAssembly("PixelBus");
2590 TGeoVolume *bus = mgr->MakeBox("Bus", medBus, 0.5*busThickness, 0.5*busWidth, 0.5*busLength);
2591 TGeoVolume *pt1000 = mgr->MakeBox("PT1000", medPt1000, 0.5*pt1000Thickness, 0.5*pt1000Width, 0.5*pt1000Length);
2592 TGeoVolume *res = mgr->MakeBox("Resistor", medRes, 0.5*resThickness, 0.5*resWidth, 0.5*resLength);
2593 TGeoVolume *cap = mgr->MakeBox("Capacitor", medCap, 0.5*capThickness, 0.5*capWidth, 0.5*capLength);
2594 TGeoVolume *ext1 = mgr->MakeBox("Extender1", medExt, 0.5*extThickness, 0.5*extWidth, 0.5*ext1Length);
2595 TGeoVolume *ext2 = mgr->MakeBox("Extender2", medExt, 0.5*extHeight - extThickness, 0.5*extWidth, 0.5*extThickness);
2596 TGeoVolume *ext3 = mgr->MakeBox("Extender3", medExt, extThickness, 0.5*extWidth, 0.5*ext2Length);
2597 bus->SetLineColor(kYellow + 2);
2598 pt1000->SetLineColor(kGreen + 3);
2599 res->SetLineColor(kRed + 1);
2600 cap->SetLineColor(kBlue - 7);
2601 ext1->SetLineColor(kGray);
2602 ext2->SetLineColor(kGray);
2603 ext3->SetLineColor(kGray);
2605 // ** MOVEMENTS AND POSITIONEMENT **
2607 TGeoTranslation *trBus = new TGeoTranslation(0.5 * (busThickness -
2608 fullThickness), 0.0, 0.0);
2609 container->AddNode(bus, 0, trBus);
2610 Double_t zRef, yRef, x, y, z;
2612 zRef = -0.5*fullLength;
2613 yRef = -0.5*fullWidth;
2615 zRef = -0.5*fullLength;
2616 yRef = -0.5*fullWidth;
2619 x = 0.5*(pt1000Thickness - fullThickness) + busThickness;
2620 for (i = 0; i < 10; i++) {
2622 z = zRef + pt1000Z[i];
2623 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2624 container->AddNode(pt1000, i, tr);
2627 x = 0.5*(capThickness - fullThickness) + busThickness;
2628 for (i = 0; i < 2; i++) {
2631 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2632 container->AddNode(cap, i, tr);
2635 x = 0.5*(resThickness - fullThickness) + busThickness;
2636 for (i = 0; i < 2; i++) {
2639 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2640 container->AddNode(res, i, tr);
2644 y = 0.5 * (-fullWidth + extWidth);
2645 z = 0.5 * (-fullLength + fgkmm * 10.0);
2648 y = 0.5 * (fullWidth - extWidth);
2649 z = 0.5 * ( fullLength - fgkmm * 10.0);
2651 x = 0.5 * (extThickness - fullThickness) + busThickness;
2652 //y = 0.5 * (fullWidth - extWidth);
2653 TGeoTranslation *trExt1 = new TGeoTranslation(x, y, z);
2655 z -= 0.5 * (ext1Length - extThickness);
2658 z += 0.5 * (ext1Length - extThickness);
2660 x += 0.5*(extHeight - extThickness);
2661 TGeoTranslation *trExt2 = new TGeoTranslation(x, y, z);
2663 z -= 0.5 * (ext2Length - extThickness);
2666 z += 0.5 * (ext2Length - extThickness);
2668 x += 0.5*(extHeight - extThickness) + extThickness;
2669 TGeoTranslation *trExt3 = new TGeoTranslation(x, y, z);
2670 container->AddNode(ext1, 0, trExt1);
2671 container->AddNode(ext2, 0, trExt2);
2672 container->AddNode(ext3, 0, trExt3);
2675 sizes[3] = yRef + pt1000Y;
2676 sizes[4] = zRef + pt1000Z[2];
2677 sizes[5] = zRef + pt1000Z[7];
2683 //______________________________________________________________________
2684 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBus
2685 (Bool_t isRight, Int_t ilayer, TArrayD &sizes, TGeoManager *mgr) const
2688 // The pixel bus is implemented as a TGeoBBox with some objects on it,
2689 // which could affect the particle energy loss.
2691 // In order to avoid confusion, the bus is directly displaced
2692 // according to the axis orientations which are used in the final stave:
2693 // X --> thickness direction
2694 // Y --> width direction
2695 // Z --> length direction
2698 // ** CRITICAL CHECK ******************************************************
2699 // layer number can be ONLY 1 or 2
2700 if (ilayer != 1 && ilayer != 2) AliFatal("Layer number MUST be 1 or 2");
2704 TGeoMedium *medBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
2705 TGeoMedium *medPt1000 = GetMedium("CERAMICS$",mgr); // ??? PT1000
2707 TGeoMedium *medCap = GetMedium("SDD X7R capacitors$",mgr);
2709 //TGeoMedium *medRes = GetMedium("SDD X7R capacitors$",mgr);
2710 TGeoMedium *medRes = GetMedium("ALUMINUM$",mgr);
2711 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2712 // ** SIZES & POSITIONS **
2713 Double_t busLength = 170.501 * fgkmm; // length of plane part
2714 Double_t busWidth = 13.800 * fgkmm; // width
2715 Double_t busThickness = 0.280 * fgkmm; // thickness
2716 Double_t pt1000Length = fgkmm * 1.50;
2717 Double_t pt1000Width = fgkmm * 3.10;
2718 Double_t pt1000Thickness = fgkmm * 0.60;
2719 Double_t pt1000Y, pt1000Z[10];// position of the pt1000's along the bus
2720 Double_t capLength = fgkmm * 2.55;
2721 Double_t capWidth = fgkmm * 1.50;
2722 Double_t capThickness = fgkmm * 1.35;
2723 Double_t capY[2], capZ[2];
2725 Double_t resLength = fgkmm * 2.20;
2726 Double_t resWidth = fgkmm * 0.80;
2727 Double_t resThickness = fgkmm * 0.35;
2728 Double_t resY[2], resZ[2];
2730 Double_t extThickness = fgkmm * 0.25;
2731 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2732 Double_t ext2Length = fgkmm * 284.0 - ext1Length + extThickness;
2733 Double_t extWidth = fgkmm * 11.0;
2734 Double_t extHeight = fgkmm * 2.5;
2736 // position of pt1000, resistors and capacitors depends on the
2737 // bus if it's left or right one
2740 pt1000Z[0] = 66160.;
2741 pt1000Z[1] = 206200.;
2742 pt1000Z[2] = 346200.;
2743 pt1000Z[3] = 486200.;
2744 pt1000Z[4] = 626200.;
2745 pt1000Z[5] = 776200.;
2746 pt1000Z[6] = 916200.;
2747 pt1000Z[7] = 1056200.;
2748 pt1000Z[8] = 1196200.;
2749 pt1000Z[9] = 1336200.;
2760 pt1000Z[0] = 319700.;
2761 pt1000Z[1] = 459700.;
2762 pt1000Z[2] = 599700.;
2763 pt1000Z[3] = 739700.;
2764 pt1000Z[4] = 879700.;
2765 pt1000Z[5] = 1029700.;
2766 pt1000Z[6] = 1169700.;
2767 pt1000Z[7] = 1309700.;
2768 pt1000Z[8] = 1449700.;
2769 pt1000Z[9] = 1589700.;
2780 pt1000Y *= 1E-4 * fgkmm;
2781 for (i = 0; i < 10; i++) {
2782 pt1000Z[i] *= 1E-4 * fgkmm;
2784 capZ[i] *= 1E-4 * fgkmm;
2785 capY[i] *= 1E-4 * fgkmm;
2786 resZ[i] *= 1E-4 * fgkmm;
2787 resY[i] *= 1E-4 * fgkmm;
2791 Double_t &fullLength = sizes[1];
2792 Double_t &fullWidth = sizes[2];
2793 Double_t &fullThickness = sizes[0];
2794 fullLength = busLength;
2795 fullWidth = busWidth;
2796 // add the thickness of the thickest component on bus (capacity)
2797 fullThickness = busThickness + capThickness;
2800 TGeoVolumeAssembly *container = new TGeoVolumeAssembly("ITSSPDpixelBus");
2801 TGeoVolume *bus = mgr->MakeBox("ITSSPDbus", medBus, 0.5*busThickness,
2802 0.5*busWidth, 0.5*busLength);
2803 TGeoVolume *pt1000 = mgr->MakeBox("ITSSPDpt1000",medPt1000,
2804 0.5*pt1000Thickness,0.5*pt1000Width, 0.5*pt1000Length);
2805 TGeoVolume *res = mgr->MakeBox("ITSSPDresistor", medRes, 0.5*resThickness,
2806 0.5*resWidth, 0.5*resLength);
2807 TGeoVolume *cap = mgr->MakeBox("ITSSPDcapacitor", medCap, 0.5*capThickness,
2808 0.5*capWidth, 0.5*capLength);
2810 TGeoVolume *ext1 = mgr->MakeBox("Extender1", medExt, 0.5*extThickness, 0.5*extWidth, 0.5*ext1Length);
2811 TGeoVolume *ext2 = mgr->MakeBox("Extender2", medExt, 0.5*extHeight - 2.*extThickness, 0.5*extWidth, 0.5*extThickness);
2812 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
2813 bus->SetLineColor(kYellow + 2);
2814 pt1000->SetLineColor(kGreen + 3);
2815 res->SetLineColor(kRed + 1);
2816 cap->SetLineColor(kBlue - 7);
2817 ext1->SetLineColor(kGray);
2818 ext2->SetLineColor(kGray);
2819 ext3->SetLineColor(kGray);
2821 // ** MOVEMENTS AND POSITIONEMENT **
2823 TGeoTranslation *trBus = new TGeoTranslation(0.5 * (busThickness -
2824 fullThickness), 0.0, 0.0);
2825 container->AddNode(bus, 1, trBus);
2826 Double_t zRef, yRef, x, y, z;
2828 zRef = -0.5*fullLength;
2829 yRef = -0.5*fullWidth;
2831 zRef = -0.5*fullLength;
2832 yRef = -0.5*fullWidth;
2835 x = 0.5*(pt1000Thickness - fullThickness) + busThickness;
2836 for (i = 0; i < 10; i++) {
2838 z = zRef + pt1000Z[i];
2839 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2840 container->AddNode(pt1000, i+1, tr);
2843 x = 0.5*(capThickness - fullThickness) + busThickness;
2844 for (i = 0; i < 2; i++) {
2847 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2848 container->AddNode(cap, i+1, tr);
2851 x = 0.5*(resThickness - fullThickness) + busThickness;
2852 for (i = 0; i < 2; i++) {
2855 TGeoTranslation *tr = new TGeoTranslation(x, y, z);
2856 container->AddNode(res, i+1, tr);
2862 y = 0.5 * (fullWidth - extWidth) - 0.1;
2863 z = 0.5 * (-fullLength + fgkmm * 10.0);
2866 y = 0.5 * (fullWidth - extWidth) - 0.1;
2867 z = 0.5 * ( fullLength - fgkmm * 10.0);
2872 y = -0.5 * (fullWidth - extWidth);
2873 z = 0.5 * (-fullLength + fgkmm * 10.0);
2876 y = -0.5 * (fullWidth - extWidth);
2877 z = 0.5 * ( fullLength - fgkmm * 10.0);
2880 x = 0.5 * (extThickness - fullThickness) + busThickness;
2881 //y = 0.5 * (fullWidth - extWidth);
2882 TGeoTranslation *trExt1 = new TGeoTranslation(x, y, z);
2884 z -= 0.5 * (ext1Length - extThickness);
2887 z += 0.5 * (ext1Length - extThickness);
2889 x += 0.5*(extHeight - 3.*extThickness);
2890 TGeoTranslation *trExt2 = new TGeoTranslation(x, y, z);
2892 z -= 0.5 * (ext2Length - extThickness) + 2.5*extThickness;
2895 z += 0.5 * (ext2Length - extThickness) + 2.5*extThickness;
2897 x += 0.5*(extHeight - extThickness) - 2.*extThickness;
2898 TGeoTranslation *trExt3 = new TGeoTranslation(x, y, z);
2899 container->AddNode(ext1, 0, trExt1);
2900 container->AddNode(ext2, 0, trExt2);
2901 container->AddNode(ext3, 0, trExt3);
2903 sizes[3] = yRef + pt1000Y;
2904 sizes[4] = zRef + pt1000Z[2];
2905 sizes[5] = zRef + pt1000Z[7];
2910 //______________________________________________________________________
2911 TList* AliITSv11GeometrySPD::CreateConeModule(TGeoManager *mgr) const
2913 TGeoMedium *medInox = GetMedium("INOX$",mgr);
2914 TGeoMedium *medExt = GetMedium("SDDKAPTON (POLYCH2)$", mgr);
2915 TGeoMedium *medPlate = GetMedium("SPD C (M55J)$", mgr);
2917 Double_t extThickness = fgkmm * 0.25;
2918 Double_t ext1Length = fgkmm * (26.7 - 10.0);
2919 Double_t ext2Length = fgkmm * (285.0 - ext1Length + extThickness);
2921 Double_t cableThickness = 1.5 * fgkmm;
2922 Double_t cableL1 = 350.0 * fgkmm - extThickness - ext1Length - ext2Length;
2923 Double_t cableL2 = 340.0 * fgkmm;
2924 //Double_t cableL3 = 570.0 * fgkmm;
2925 Double_t cableL3 = 57.0 * fgkmm;
2926 Double_t cableW1 = 11.0 * fgkmm;
2927 Double_t cableW2 = 30.0 * fgkmm;
2928 Double_t cableW3 = 50.0 * fgkmm;
2930 Double_t mcmThickness = 1.2 *fgkmm;
2931 Double_t mcmLength = cableL1 + cableL2 + cableL3;
2932 Double_t mcmWidth = cableW1;
2934 Double_t plateLength = 200.0 * fgkmm;
2935 Double_t plateWidth = 50.0 * fgkmm;
2936 Double_t plateThickness = 5.0 * fgkmm;
2938 Double_t x[12], y[12];
2941 y[0] = 0.0 + 0.5 * cableW1;
2943 x[1] = x[0] + cableL1 - 0.5*(cableW2 - cableW1);
2946 x[2] = x[0] + cableL1;
2947 y[2] = y[1] + 0.5*(cableW2 - cableW1);
2949 x[3] = x[2] + cableL2;
2952 x[4] = x[3] + 0.5*(cableW3 - cableW2);
2953 y[4] = y[3] + 0.5*(cableW3 - cableW2);
2955 x[5] = x[4] + cableL3 - 0.5*(cableW3 - cableW2);
2958 for (Int_t i = 6; i < 12; i++) {
2963 TGeoVolumeAssembly* container[2];
2964 container[0] = new TGeoVolumeAssembly("ITSSPDConeModule");
2965 container[1] = new TGeoVolumeAssembly("ITSSPDCoolingModule");
2967 TGeoXtru *shCable = new TGeoXtru(2);
2968 shCable->DefinePolygon(12, x, y);
2969 shCable->DefineSection(0, 0., 0., 0., 1.0);
2970 shCable->DefineSection(1, cableThickness, 0., 0., 1.0);
2972 TGeoVolume *volCable = new TGeoVolume("ITSSPDExtender", shCable, medExt);
2973 volCable->SetLineColor(kGreen);
2975 TGeoVolume *volTube = gGeoManager->MakeTube("ITSSPDCoolingTubeCone", medInox, 5.*fgkmm, 6.*fgkmm, 0.5*(x[5] - x[0]));
2976 volTube->SetLineColor(kGray);
2978 Double_t thickness = cableThickness + mcmThickness;
2979 TGeoBBox *shOut = new TGeoBBox("ITSSPD_shape_plateout", 0.5*plateThickness, 0.5*plateLength, 0.5*plateWidth);
2980 TGeoBBox *shIn = new TGeoBBox("ITSSPD_shape_platein", 0.5*thickness, 0.52*plateLength, 0.5*cableW2);
2982 sprintf(string, "%s-%s", shOut->GetName(), shIn->GetName());
2983 TGeoCompositeShape *shPlate = new TGeoCompositeShape("ITSSPDPlate_shape", string);
2984 TGeoVolume *volPlate = new TGeoVolume("ITSSPDPlate", shPlate, medPlate);
2985 volPlate->SetLineColor(kRed);
2987 TGeoVolume *volMCMExt = gGeoManager->MakeBox("ITSSPDextenderMCM", medExt, 0.5*mcmThickness, 0.5*mcmLength, 0.5*mcmWidth);
2988 volMCMExt->SetLineColor(kGreen+3);
2990 TGeoRotation *rot = new TGeoRotation(*gGeoIdentity);
2993 container[0]->AddNode(volCable, 0, rot);
2995 TGeoTranslation *combi = new TGeoTranslation(cableThickness + 0.5*mcmThickness, x[0] + 0.5*mcmLength, 0.0);
2996 container[0]->AddNode(volMCMExt, 0, combi);
2998 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
2999 rot1->RotateX(87.5);
3000 TGeoCombiTrans *tr = new TGeoCombiTrans(1.15, x[0] + 0.5*(x[5] - x[0]), -2.95, rot1);
3001 container[1]->AddNode(volTube, 0, tr);
3003 TGeoTranslation *tr1 = new TGeoTranslation(0.5*plateThickness - 0.5*(plateThickness-thickness), x[3] - x[0] - 0.52*plateLength, 0.0);
3004 container[0]->AddNode(volPlate, 0, tr1);
3006 TList* conemodulelist = new TList();
3008 conemodulelist->Add(container[0]);
3009 conemodulelist->Add(container[1]);
3011 return conemodulelist;
3014 //______________________________________________________________________
3015 void AliITSv11GeometrySPD::CreateCones(TGeoVolume *moth) const
3018 TList* modulelist = CreateConeModule(gGeoManager);
3019 TGeoVolumeAssembly* module;
3021 //Double_t angle[10] = {18., 54., 90., 126., 162., -18., -54., -90., -126., -162.};
3022 // angleNm for cone modules (cables), angleNc for cooling tubes
3023 Double_t angle1m[10] = {23., 53., 90., 127., 157., 203.0, 233.0, 270.0, 307.0, 337.0};
3024 Double_t angle2m[10] = {18., 53., 90., 126., 162., 198.0, 233.0, 270.0, 309.0, 342.0};
3025 Double_t angle1c[10] = {23., 53., 90., 124., 157., 203.0, 233.0, 270.0, 304.0, 337.0};
3026 Double_t angle2c[10] = {18., 44., 90., 126., 162., 198.0, 223.0, 270.0, 309.0, 342.0};
3028 // First add the cables
3029 module = (TGeoVolumeAssembly*)modulelist->At(0);
3030 for (Int_t i = 0; i < 10; i++) {
3031 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
3032 rot1->RotateY(-90.0);
3033 rot1->RotateX(45.0);
3035 rot1->RotateZ(90.0 - angle1m[i]);
3036 TGeoCombiTrans *tr1 = new TGeoCombiTrans(0.0, 0.0, 38.0, rot1);
3037 moth->AddNode(module, 2*i, tr1);
3038 TGeoRotation *rot2 = new TGeoRotation(*gGeoIdentity);
3039 rot2->RotateY(90.0);
3040 rot2->RotateX(-45.0);
3042 rot2->RotateZ(90.0 - angle2m[i]);
3043 TGeoCombiTrans *tr2 = new TGeoCombiTrans(0.0, 0.0, -37.9, rot2);
3044 moth->AddNode(module, 2*i+1, tr2);
3047 // Then the cooling tubes
3048 module = (TGeoVolumeAssembly*)modulelist->At(1);
3049 for (Int_t i = 0; i < 10; i++) {
3050 TGeoRotation *rot1 = new TGeoRotation(*gGeoIdentity);
3051 rot1->RotateY(-90.0);
3052 rot1->RotateX(45.0);
3054 rot1->RotateZ(90.0 - angle1c[i]);
3055 TGeoCombiTrans *tr1 = new TGeoCombiTrans(0.0, 0.0, 38.0, rot1);
3056 moth->AddNode(module, 2*i, tr1);
3057 TGeoRotation *rot2 = new TGeoRotation(*gGeoIdentity);
3058 rot2->RotateY(90.0);
3059 rot2->RotateX(-45.0);
3061 rot2->RotateZ(90.0 - angle2c[i]);
3062 TGeoCombiTrans *tr2 = new TGeoCombiTrans(0.0, 0.0, -37.9, rot2);
3063 moth->AddNode(module, 2*i+1, tr2);
3067 //______________________________________________________________________
3068 TGeoVolume* AliITSv11GeometrySPD::CreateExtender(
3069 const Double_t *extenderParams, const TGeoMedium *extenderMedium,
3070 TArrayD& sizes) const
3073 // ------------------ CREATE AN EXTENDER ------------------------
3075 // This function creates the following picture (in plane xOy)
3076 // Should be useful for the definition of the pixel bus and MCM extenders
3077 // The origin corresponds to point 0 on the picture, at half-width
3081 // ^ +---+---------------------+
3084 // 0------> X / +---------------------+
3091 // ---> +-----------+---+
3097 // Takes 6 parameters in the following order :
3098 // |--> par 0 : inner length [0-1] / [9-8]
3099 // |--> par 1 : thickness ( = [0-9] / [4-5])
3100 // |--> par 2 : angle of the slope
3101 // |--> par 3 : total height in local Y direction
3102 // |--> par 4 : outer length [3-4] / [6-5]
3103 // |--> par 5 : width in local Z direction
3105 Double_t slopeDeltaX = (extenderParams[3] - extenderParams[1]
3106 * TMath::Cos(extenderParams[2])) /
3107 TMath::Tan(extenderParams[2]);
3108 Double_t extenderXtruX[10] = {
3111 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2]) ,
3112 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3114 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3115 slopeDeltaX + extenderParams[4],
3116 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3117 slopeDeltaX + extenderParams[4],
3118 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3120 extenderParams[0]+extenderParams[1]*TMath::Sin(extenderParams[2])+
3121 slopeDeltaX - extenderParams[1] * TMath::Sin(extenderParams[2]) ,
3125 Double_t extenderXtruY[10] = {
3128 extenderParams[1] * (1-TMath::Cos(extenderParams[2])) ,
3129 extenderParams[3] - extenderParams[1] ,
3130 extenderParams[3] - extenderParams[1] ,
3133 extenderParams[3]-extenderParams[1]*(1-TMath::Cos(extenderParams[2])) ,
3138 if (sizes.GetSize() != 3) sizes.Set(3);
3139 Double_t &thickness = sizes[0];
3140 Double_t &length = sizes[1];
3141 Double_t &width = sizes[2];
3143 thickness = extenderParams[3];
3144 width = extenderParams[5];
3145 length = extenderParams[0]+extenderParams[1]*
3146 TMath::Sin(extenderParams[2])+slopeDeltaX+extenderParams[4];
3148 // creation of the volume
3149 TGeoXtru *extenderXtru = new TGeoXtru(2);
3150 TGeoVolume *extenderXtruVol = new TGeoVolume("ITSSPDextender",extenderXtru,
3152 extenderXtru->DefinePolygon(10,extenderXtruX,extenderXtruY);
3153 extenderXtru->DefineSection(0,-0.5*extenderParams[4]);
3154 extenderXtru->DefineSection(1, 0.5*extenderParams[4]);
3155 return extenderXtruVol;
3157 //______________________________________________________________________
3158 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreatePixelBusAndExtensions
3159 (Bool_t /*zpos*/, TGeoManager *mgr) const
3162 // Creates an assembly which contains the pixel bus and its extension
3163 // and the extension of the MCM.
3164 // By: Renaud Vernet
3165 // NOTE: to be defined its material and its extension in the outside
3168 // ==== constants =====
3171 //TGeoMedium *medPixelBus = GetMedium("SPDBUS(AL+KPT+EPOX)$",mgr);
3172 // IXEL BUS EXTENDER
3173 TGeoMedium *medPBExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr);
3175 TGeoMedium *medMCMExtender = GetMedium("SDDKAPTON (POLYCH2)$",mgr);
3176 // //geometrical constants
3177 const Double_t kPbextenderThickness = 0.07 * fgkmm;
3178 //design=?? 70 deg. seems OK
3179 const Double_t kPbExtenderSlopeAngle = 70.0 * TMath::Pi()/180.;
3180 // = 2.6 - (0.28+0.05+0.35) cf design
3181 const Double_t kPbExtenderHeight = 1.92 * fgkmm;
3182 const Double_t kPbExtenderWidthY = 11.0 * fgkmm;
3183 //design=?? 70 deg. seems OK
3184 const Double_t kMcmExtenderSlopeAngle = 70.0 * TMath::Pi()/180.;
3185 const Double_t kMcmExtenderThickness = 0.10 * fgkmm;
3186 const Double_t kMcmExtenderHeight = 1.8 * fgkmm;
3187 const Double_t kMcmExtenderWidthY = kPbExtenderWidthY;
3188 // const Double_t groundingThickness = 0.07 * fgkmm;
3189 // const Double_t grounding2pixelBusDz = 0.625 * fgkmm;
3190 // const Double_t pixelBusThickness = 0.28 * fgkmm;
3191 // const Double_t groundingWidthX = 170.501 * fgkmm;
3192 // const Double_t pixelBusContactDx = 1.099 * fgkmm;
3193 // const Double_t pixelBusWidthY = 13.8 * fgkmm;
3195 // const Double_t pixelBusContactPhi = 20.0 * TMath::Pi()/180.
3196 // const Double_t pbExtenderTopZ = 2.72 * fgkmm;
3197 // const Double_t mcmThickness = 0.35 * fgkmm;
3198 // const Double_t halfStaveTotalLength = 247.64 * fgkmm;
3199 // const Double_t deltaYOrigin = 15.95/2.* fgkmm;
3200 // const Double_t deltaXOrigin = 1.1 * fgkmm;
3201 // const Double_t deltaZOrigin = halfStaveTotalLength / 2.;
3202 // const Double_t grounding2pixelBusDz2 = grounding2pixelBusDz+
3203 // groundingThickness/2. + pixelBusThickness/2.;
3204 // const Double_t pixelBusWidthX = groundingWidthX;
3205 // const Double_t pixelBusRaiseLength = (pixelBusContactDx-
3206 // pixelBusThickness*TMath::Sin(pixelBusContactPhi))/
3207 // TMath::Cos(pixelBusContactPhi);
3208 // const Double_t pbExtenderBaseZ = grounding2pixelBusDz2 +
3209 // pixelBusRaiseLength*TMath::Sin(pixelBusContactPhi) +
3210 // 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi)*
3211 // TMath::Tan(pixelBusContactPhi);
3212 // const Double_t pbExtenderDeltaZ = pbExtenderTopZ-pbExtenderBaseZ;
3213 // const Double_t pbExtenderEndPointX = 2*deltaZOrigin -
3214 // groundingWidthX - 2*pixelBusThickness*TMath::Sin(pixelBusContactPhi);
3215 // const Double_t pbExtenderXtru3L = 1.5 * fgkmm; //arbitrary ?
3216 // const Double_t pbExtenderXtru4L = (pbExtenderDeltaZ +
3217 // pixelBusThickness*(TMath::Cos(extenderSlope)-2))/
3218 // TMath::Sin(extenderSlope);
3219 // const Double_t kMcmExtenderEndPointX = deltaZOrigin - 48.2 * fgkmm;
3220 // const Double_t kMcmExtenderXtru3L = 1.5 * fgkmm;
3221 // //===== end constants =====
3222 const Double_t kPbExtenderInnerLength = 10. * fgkmm;
3223 const Double_t kPbExtenderOuterLength = 15. * fgkmm;
3224 const Double_t kMcmExtenderInnerLength = 10. * fgkmm;
3225 const Double_t kMcmExtenderOuterLength = 15. * fgkmm;
3226 Double_t pbExtenderParams[6] = {kPbExtenderInnerLength, //0
3227 kPbextenderThickness, //1
3228 kPbExtenderSlopeAngle, //2
3229 kPbExtenderHeight, //3
3230 kPbExtenderOuterLength, //4
3231 kPbExtenderWidthY}; //5
3233 Double_t mcmExtenderParams[6] = {kMcmExtenderInnerLength, //0
3234 kMcmExtenderThickness, //1
3235 kMcmExtenderSlopeAngle, //2
3236 kMcmExtenderHeight, //3
3237 kMcmExtenderOuterLength, //4
3238 kMcmExtenderWidthY}; //5
3241 TGeoVolume* pbExtender = CreateExtender(pbExtenderParams,medPBExtender,
3243 if(GetDebug(1))printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\t"
3244 "LENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
3245 TGeoVolume* mcmExtender = CreateExtender(mcmExtenderParams,medMCMExtender,
3247 if(GetDebug(1))printf("CREATED AN EXTENDER : THICKNESS = %5.5f cm\t"
3248 "LENGTH=%5.5f cm\tWIDTH=%5.5f cm\n",sizes[0],sizes[1],sizes[2]);
3249 // Double_t pixelBusValues[5] = {pixelBusWidthX, //0
3250 // pixelBusThickness, //1
3251 // pixelBusContactPhi, //2
3252 // pixelBusRaiseLength, //3
3253 // pixelBusWidthY}; //4
3255 // Double_t pbExtenderValues[8] = {pixelBusRaiseLength, //0
3256 // pixelBusContactPhi, //1
3257 // pbExtenderXtru3L, //2
3258 // pixelBusThickness, //3
3259 // extenderSlope, //4
3260 // pbExtenderXtru4L, //5
3261 // pbExtenderEndPointX, //6
3262 // kPbExtenderWidthY}; //7
3264 // Double_t mcmExtenderValues[6] = {mcmExtenderXtru3L, //0
3265 // mcmExtenderThickness, //1
3266 // extenderSlope, //2
3267 // deltaMcmMcmExtender, //3
3268 // mcmExtenderEndPointX, //4
3269 // mcmExtenderWidthY}; //5
3270 // TGeoVolumeAssembly *pixelBus=new TGeoVolumeAssembly("ITSSPDpixelBus");
3271 // CreatePixelBus(pixelBus,pixelBusValues,medPixelBus);
3272 // TGeoVolumeAssembly *pbExtender = new TGeoVolumeAssembly(
3273 // "ITSSPDpixelBusExtender");
3274 // CreatePixelBusExtender(pbExtender,pbExtenderValues,medPBExtender);
3275 // TGeoVolumeAssembly *mcmExtender = new TGeoVolumeAssembly(
3276 // "ITSSPDmcmExtender");
3277 // CreateMCMExtender(mcmExtender,mcmExtenderValues,medMCMExtender);
3278 //-------------- DEFINITION OF GEOMETRICAL TRANSFORMATIONS --------
3279 // TGeoRotation * commonRot = new TGeoRotation("commonRot",0,90,0);
3280 // commonRot->MultiplyBy(new TGeoRotation("rot",-90,0,0));
3281 // TGeoTranslation * pixelBusTrans = new TGeoTranslation(
3282 // pixelBusThickness/2. - deltaXOrigin + 0.52*fgkmm ,
3283 // -pixelBusWidthY/2. + deltaYOrigin ,
3284 // -groundingWidthX/2. + deltaZOrigin);
3285 // TGeoRotation *pixelBusRot = new TGeoRotation(*commonRot);
3286 // TGeoTranslation *pbExtenderTrans =new TGeoTranslation(*pixelBusTrans);
3287 // TGeoRotation *pbExtenderRot = new TGeoRotation(*pixelBusRot);
3288 // pbExtenderTrans->SetDz(*(pbExtenderTrans->GetTranslation()+2) -
3289 // pixelBusWidthX/2. - 2*pixelBusThickness*
3290 // TMath::Sin(pixelBusContactPhi));
3292 // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) -
3293 // (pixelBusWidthY - kPbExtenderWidthY)/2.);
3295 // pbExtenderTrans->SetDy(*(pbExtenderTrans->GetTranslation()+1) +
3296 // (pixelBusWidthY - kPbExtenderWidthY)/2.);
3298 // pbExtenderTrans->SetDx(*(pbExtenderTrans->GetTranslation()) +
3299 // pixelBusThickness/2 + 2*pixelBusThickness*
3300 // TMath::Sin(pixelBusContactPhi)*
3301 // TMath::Tan(pixelBusContactPhi));
3302 // TGeoTranslation * mcmExtenderTrans = new TGeoTranslation(0.12*fgkmm +
3303 // mcmThickness - deltaXOrigin,
3304 // pbExtenderTrans->GetTranslation()[1],
3306 // TGeoRotation * mcmExtenderRot = new TGeoRotation(*pbExtenderRot);
3307 // // add pt1000 components
3308 // Double_t pt1000Z = fgkmm * 64400. * 1E-4;
3309 // //Double_t pt1000X[10] = {319700., 459700., 599700., 739700.,
3310 // 879700., 1029700., 1169700., 1309700.,
3311 // 1449700., 1589700.};
3312 // Double_t pt1000X[10] ={66160., 206200., 346200., 486200., 626200.,
3313 // 776200., 916200., 1056200., 1196200., 1336200.};
3314 // Double_t pt1000size[3] = {fgkmm*1.5, fgkmm*0.6, fgkmm*3.1};
3316 // for (i = 0; i < 10; i++) {
3317 // pt1000X[i] *= fgkmm * 1E-4;
3319 // TGeoVolume *pt1000 = mgr->MakeBox("ITSSPDpt1000",0,0.5*pt1000size[0],
3320 // 0.5*pt1000size[1], 0.5*pt1000size[2]);
3321 // pt1000->SetLineColor(kGray);
3322 // Double_t refThickness = - pixelBusThickness;
3323 // for (i = 0; i < 10; i++) {
3324 // TGeoTranslation *tr = new TGeoTranslation(pt1000X[i]-
3325 // 0.5*pixelBusWidthX, 0.002+0.5*(-3.*refThickness+pt1000size[3]),
3326 // pt1000Z -0.5*pixelBusWidthY);
3327 // pixelBus->AddNode(pt1000, i+1, tr);
3330 //CREATE FINAL VOLUME ASSEMBLY AND ROTATE IT
3331 TGeoVolumeAssembly *assembly = new TGeoVolumeAssembly("ITSSPDextenders");
3332 // assembly->AddNode((TGeoVolume*)pixelBus,1,
3333 // new TGeoCombiTrans(*pixelBusTrans,*pixelBusRot));
3334 // assembly->AddNode((TGeoVolume*)pbExtender,1,
3335 // new TGeoCombiTrans(*pbExtenderTrans,*pbExtenderRot));
3336 // assembly->AddNode((TGeoVolume*)mcmExtender,1,
3337 // new TGeoCombiTrans(*mcmExtenderTrans,*mcmExtenderRot));
3338 // assembly->AddNode(mcmExtender,1,new TGeoIdentity());
3339 assembly->AddNode(pbExtender,1);
3340 assembly->AddNode(mcmExtender,1);
3341 // assembly->SetTransparency(50);
3345 //______________________________________________________________________
3346 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateHalfStave(Bool_t isRight,
3347 Int_t layer,Int_t idxCentral,Int_t idxSide,TArrayD &sizes,TGeoManager *mgr)
3350 // Implementation of an half-stave, which depends on the side where
3351 // we are on the stave. The convention for "left" and "right" is the
3352 // same as for the MCM. The return value is a TGeoAssembly which is
3353 // structured in such a way that the origin of its local reference
3354 // frame coincides with the origin of the whole stave.
3355 // The TArrayD passed by reference will contain details of the shape:
3356 // - sizes[0] = thickness
3357 // - sizes[1] = length
3358 // - sizes[2] = width
3359 // - sizes[3] = common 'x' position for eventual clips
3360 // - sizes[4] = common 'y' position for eventual clips
3361 // - sizes[5] = 'z' position of first clip
3362 // - sizes[6] = 'z' position of second clip
3367 // idxCentral and idxSide must be different
3368 if (idxCentral == idxSide) {
3369 AliInfo("Ladders must be inserted in half-stave with "
3370 "different indexes.");
3371 idxSide = idxCentral + 1;
3372 AliInfo(Form("Central ladder will be inserted with index %d",
3374 AliInfo(Form("Side ladder will be inserted with index %d",idxSide));
3377 // define the separations along Z direction between the objects
3378 Double_t sepLadderLadder = fgkmm * 0.2; // sep. btw the 2 ladders
3379 Double_t sepLadderCenter = fgkmm * 0.4; // sep. btw the "central" ladder
3380 // and the Z=0 plane in stave ref.
3381 Double_t sepLadderMCM = fgkmm * 0.3; // sep. btw the "external" ladder
3383 Double_t sepBusCenter = fgkmm * 0.3; // sep. btw the bus central edge
3384 // and the Z=0 plane in stave ref.
3389 TArrayD grndSize(3);
3390 // This one line repalces the 3 bellow, BNS.
3391 TGeoVolume *grndVol = CreateGroundingFoil(isRight, grndSize, mgr);
3392 Double_t &grndThickness = grndSize[0];
3393 Double_t &grndLength = grndSize[1];
3396 TArrayD ladderSize(3);
3397 TGeoVolume *ladder = CreateLadder(layer, ladderSize, mgr);
3398 Double_t ladderThickness = ladderSize[0];
3399 Double_t ladderLength = ladderSize[1];
3400 Double_t ladderWidth = ladderSize[2];
3404 TGeoVolumeAssembly *mcm = CreateMCM(!isRight,mcmSize,mgr);
3405 Double_t mcmThickness = mcmSize[0];
3406 Double_t mcmLength = mcmSize[1];
3407 Double_t mcmWidth = mcmSize[2];
3411 TGeoVolumeAssembly *bus = CreatePixelBus(isRight, layer, busSize, mgr);
3412 Double_t busThickness = busSize[0];
3413 Double_t busLength = busSize[1];
3414 Double_t busWidth = busSize[2];
3416 // glue between ladders and pixel bus
3417 TGeoMedium *medLadGlue = GetMedium("EPOXY$", mgr);
3418 Double_t ladGlueThickness = fgkmm * 0.1175 - fgkGapLadder;
3419 TGeoVolume *ladderGlue = mgr->MakeBox("ITSSPDladderGlue",medLadGlue,
3420 0.5*ladGlueThickness, 0.5*busWidth, 0.5*busLength);
3421 ladderGlue->SetLineColor(kYellow + 5);
3423 // create references for the whole object, as usual
3425 Double_t &fullThickness = sizes[0];
3426 Double_t &fullLength = sizes[1];
3427 Double_t &fullWidth = sizes[2];
3429 // compute the full size of the container
3430 fullLength = sepLadderCenter+2.0*ladderLength+sepLadderMCM+
3431 sepLadderLadder+mcmLength;
3432 fullWidth = ladderWidth;
3433 fullThickness = grndThickness + fgkGapLadder + mcmThickness + busThickness;
3434 //cout << "HSTAVE FULL THICKNESS = " << fullThickness << endl;
3438 // grounding foil (shifted only along thickness)
3439 Double_t xGrnd = -0.5*fullThickness + 0.5*grndThickness;
3440 Double_t zGrnd = -0.5*grndLength;
3441 if (!isRight) zGrnd = -zGrnd;
3442 TGeoTranslation *grndTrans = new TGeoTranslation(xGrnd, 0.0, zGrnd);
3444 // ladders (translations along thickness and length)
3445 // layers must be sorted going from the one at largest Z to the
3446 // one at smallest Z:
3447 // -|Zmax| ------> |Zmax|
3449 // then, for layer 1 ladders they must be placed exactly this way,
3450 // and in layer 2 at the opposite. In order to remember the placements,
3451 // we define as "inner" and "outer" ladder respectively the one close
3452 // to barrel center, and the one closer to MCM, respectively.
3453 Double_t xLad, zLadIn, zLadOut;
3454 xLad = xGrnd + 0.5*(grndThickness + ladderThickness) +
3455 0.01175 - fgkGapLadder;
3456 zLadIn = -sepLadderCenter - 0.5*ladderLength;
3457 zLadOut = zLadIn - sepLadderLadder - ladderLength;
3461 } // end if !isRight
3462 TGeoRotation *rotLad = new TGeoRotation(*gGeoIdentity);
3463 rotLad->RotateZ(90.0);
3464 rotLad->RotateY(180.0);
3465 Double_t sensWidth = fgkmm * 12.800;
3466 Double_t chipWidth = fgkmm * 15.950;
3467 Double_t guardRingWidth = fgkmm * 0.560;
3468 Double_t ladderShift = 0.5 * (chipWidth - sensWidth - 2.0*guardRingWidth);
3469 TGeoCombiTrans *trLadIn = new TGeoCombiTrans(xLad,ladderShift,zLadIn,
3471 TGeoCombiTrans *trLadOut = new TGeoCombiTrans(xLad,ladderShift,zLadOut,
3474 // MCM (length and thickness direction, placing at same level as the
3475 // ladder, which implies to recompute the position of center, because
3476 // ladder and MCM have NOT the same thickness) the two copies of the
3477 // MCM are placed at the same distance from the center, on both sides
3478 Double_t xMCM = xGrnd + 0.5*grndThickness + 0.5*mcmThickness +
3479 0.01175 - fgkGapLadder;
3480 Double_t yMCM = 0.5*(fullWidth - mcmWidth);
3481 Double_t zMCM = zLadOut - 0.5*ladderLength - 0.5*mcmLength - sepLadderMCM;
3482 if (!isRight) zMCM = zLadOut + 0.5*ladderLength + 0.5*mcmLength +
3485 // create the correction rotations
3486 TGeoRotation *rotMCM = new TGeoRotation(*gGeoIdentity);
3487 rotMCM->RotateY(90.0);
3488 TGeoCombiTrans *trMCM = new TGeoCombiTrans(xMCM, yMCM, zMCM, rotMCM);
3490 // glue between ladders and pixel bus
3491 Double_t xLadGlue = xLad + 0.5*ladderThickness + 0.01175 -
3492 fgkGapLadder + 0.5*ladGlueThickness;
3494 // bus (length and thickness direction)
3495 Double_t xBus = xLadGlue + 0.5*ladGlueThickness + 0.5*busThickness;
3496 Double_t yBus = 0.5*(fullWidth - busWidth) + 0.075; // Hardcode fix of a small overlap
3497 Double_t zBus = -0.5*busLength - sepBusCenter;
3498 if (!isRight) zBus = -zBus;
3499 TGeoTranslation *trBus = new TGeoTranslation(xBus, yBus, zBus);
3501 TGeoTranslation *trLadGlue = new TGeoTranslation(xLadGlue, 0.0, zBus);
3503 // create the container
3504 TGeoVolumeAssembly *container = 0;
3505 if (idxCentral+idxSide==5) {
3506 container = new TGeoVolumeAssembly("ITSSPDhalf-Stave1");
3508 container = new TGeoVolumeAssembly("ITSSPDhalf-Stave0");
3511 // add to container all objects
3512 container->AddNode(grndVol, 1, grndTrans);
3513 // ladders are inserted in different order to respect numbering scheme
3514 // which is inverted when going from outer to inner layer
3515 container->AddNode(ladder, idxCentral+1, trLadIn);
3516 container->AddNode(ladder, idxSide+1, trLadOut);
3517 container->AddNode(ladderGlue, 1, trLadGlue);
3518 container->AddNode(mcm, 1, trMCM);
3519 container->AddNode(bus, 1, trBus);
3521 // since the clips are placed in correspondence of two pt1000s,
3522 // their position is computed here, but they are not added by default
3523 // it will be the StavesInSector method which will decide to add them
3524 // anyway, to recovery some size informations on the clip, it must be
3527 // TGeoVolume *clipDummy = CreateClip(clipSize, kTRUE, mgr);
3528 CreateClip(clipSize, kTRUE, mgr);
3529 // define clip movements (width direction)
3530 sizes[3] = xBus + 0.5*busThickness;
3531 sizes[4] = 0.5 * (fullWidth - busWidth) - clipSize[6] - fgkmm*0.48;
3532 sizes[5] = zBus + busSize[4];
3533 sizes[6] = zBus + busSize[5];
3537 //______________________________________________________________________
3538 TGeoVolumeAssembly* AliITSv11GeometrySPD::CreateStave(Int_t layer,
3539 TArrayD &sizes, TGeoManager *mgr)
3542 // This method uses all other ones which create pieces of the stave
3543 // and assemblies everything together, in order to return the whole
3544 // stave implementation, which is returned as a TGeoVolumeAssembly,
3545 // due to the presence of some parts which could generate fake overlaps
3546 // when put on the sector.
3547 // This assembly contains, going from bottom to top in the thickness
3549 // - the complete grounding foil, defined by the "CreateGroundingFoil"
3550 // method which already joins some glue and real groudning foil
3551 // layers for the whole stave (left + right);
3552 // - 4 ladders, which are sorted according to the ALICE numbering
3553 // scheme, which depends on the layer we are building this stave for;
3554 // - 2 MCMs (a left and a right one);
3555 // - 2 pixel buses (a left and a right one);
3558 // - the layer number, which determines the displacement and naming
3559 // of sensitive volumes
3560 // - a TArrayD passed by reference which will contain the size
3561 // of virtual box containing the stave
3562 // - the TGeoManager
3565 // create the container
3566 TGeoVolumeAssembly *container = new TGeoVolumeAssembly(Form(
3567 "ITSSPDlay%d-Stave",layer));
3568 // define the indexes of the ladders in order to have the correct order
3569 // keeping in mind that the staves will be inserted as they are on layer
3570 // 2, while they are rotated around their local Y axis when inserted
3571 // on layer 1, so in this case they must be put in the "wrong" order
3572 // to turn out to be right at the end. The convention is:
3573 // -|Zmax| ------> |Zmax|
3575 // with respect to the "native" stave reference frame, "left" is in
3576 // the positive Z this leads the definition of these indexes:
3577 Int_t idxCentralL, idxSideL, idxCentralR, idxSideR;
3589 } // end if layer ==1
3591 // create the two half-staves
3592 TArrayD sizeL, sizeR;
3593 TGeoVolumeAssembly *hstaveL = CreateHalfStave(kFALSE, layer, idxCentralL,
3594 idxSideL, sizeL,mgr);
3595 TGeoVolumeAssembly *hstaveR = CreateHalfStave(kTRUE, layer, idxCentralR,
3596 idxSideR, sizeR, mgr);
3597 // copy the size to the stave's one
3599 sizes[0] = sizeL[0];
3600 sizes[1] = sizeR[1] + sizeL[1];
3601 sizes[2] = sizeL[2];
3602 sizes[3] = sizeL[3];
3603 sizes[4] = sizeL[4];
3604 sizes[5] = sizeL[5];
3605 sizes[6] = sizeL[6];
3606 sizes[7] = sizeR[5];
3607 sizes[8] = sizeR[6];
3609 // add to container all objects
3610 container->AddNode(hstaveL, 1);
3611 container->AddNode(hstaveR, 1);
3615 //______________________________________________________________________
3616 void AliITSv11GeometrySPD::SetAddStave(Bool_t *mask)
3619 // Define a mask which states qhich staves must be placed.
3620 // It is a string which must contain '0' or '1' depending if
3621 // a stave must be placed or not.
3622 // Each place is referred to one of the staves, so the first
3623 // six characters of the string will be checked.
3627 for (i = 0; i < 6; i++) fAddStave[i] = mask[i];
3629 //______________________________________________________________________
3630 void AliITSv11GeometrySPD::StavesInSector(TGeoVolume *moth, TGeoManager *mgr)
3633 // Unification of essentially two methods:
3634 // - the one which creates the sector structure
3635 // - the one which returns the complete stave
3637 // For compatibility, this method requires the same arguments
3638 // asked by "CarbonFiberSector" method, which is recalled here.
3639 // Like this cited method, this one does not return any value,
3640 // but it inserts in the mother volume (argument 'moth') all the stuff
3641 // which composes the complete SPD sector.
3643 // In the following, the stave numbering order used for arrays is the
3644 // same as defined in the GetSectorMountingPoints():
3650 // Arguments: see description of "CarbonFiberSector" method.
3653 Double_t shift[6]; // shift from the innermost position in the
3654 // sector placement plane (where the stave
3655 // edge is in the point where the rounded
3658 shift[0] = fgkmm * -0.691;
3659 shift[1] = fgkmm * 5.041;
3660 shift[2] = fgkmm * 1.816;
3661 shift[3] = fgkmm * -0.610;
3662 shift[4] = fgkmm * -0.610;
3663 shift[5] = fgkmm * -0.610;
3665 // corrections after interaction with Andrea and CAD
3666 Double_t corrX[6] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
3667 Double_t corrY[6] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
3671 corrX[2] = corrX[3] = corrX[4] = corrX[5] = -0.0016;
3675 corrY[2] = corrY[3] = corrY[4] = corrY[5] = -0.0003;
3677 corrX[0] += 0.00026;
3678 corrY[0] += -0.00080;
3680 corrX[1] += 0.00018;
3681 corrY[1] += -0.00086;
3683 corrX[2] += 0.00020;
3684 corrY[2] += -0.00062;
3686 corrX[3] += 0.00017;
3687 corrY[3] += -0.00076;
3689 corrX[4] += 0.00016;
3690 corrY[4] += -0.00096;
3692 corrX[5] += 0.00018;
3693 corrY[5] += -0.00107;
3695 // create stave volumes (different for layer 1 and 2)
3696 TArrayD staveSizes1(9), staveSizes2(9), clipSize(5);
3697 Double_t &staveHeight = staveSizes1[2], &staveThickness = staveSizes1[0];
3698 TGeoVolume *stave1 = CreateStave(1, staveSizes1, mgr);
3699 TGeoVolume *stave2 = CreateStave(2, staveSizes2, mgr);
3700 TGeoVolume *clip = CreateClip(clipSize, kFALSE, mgr);
3702 Double_t xL, yL; // leftmost edge of mounting point (XY projection)
3703 Double_t xR, yR; // rightmost edge of mounting point (XY projection)
3704 Double_t xM, yM; // middle point of the segment L-R
3705 Double_t dx, dy; // (xL - xR) and (yL - yR)
3706 Double_t widthLR; // width of the segment L-R
3707 Double_t angle; // stave rotation angle in degrees
3708 Double_t diffWidth; // difference between mounting plane width and
3709 // stave width (smaller)
3710 Double_t xPos, yPos; // final translation of the stave
3711 Double_t parMovement; // translation in the LR plane direction
3713 staveThickness += fgkGapHalfStave;
3717 for (i = 0; i < 6; i++) {
3718 // in debug mode, if this stave is not required, it is skipped
3719 if (!fAddStave[i]) continue;
3720 // retrieve reference points
3721 GetSectorMountingPoints(i, xL, yL, xR, yR);
3722 xM = 0.5 * (xL + xR);
3723 yM = 0.5 * (yL + yR);
3726 angle = TMath::ATan2(dy, dx);
3727 widthLR = TMath::Sqrt(dx*dx + dy*dy);
3728 diffWidth = 0.5*(widthLR - staveHeight);
3729 // first, a movement along this plane must be done
3730 // by an amount equal to the width difference
3731 // and then the fixed shift must also be added
3732 parMovement = diffWidth + shift[i];
3733 // due to stave thickness, another movement must be done
3734 // in the direction normal to the mounting plane
3735 // which is computed using an internal method, in a reference
3736 // frame where the LR segment has its middle point in the origin
3737 // and axes parallel to the master reference frame
3739 ParallelPosition(-0.5*staveThickness, -parMovement, angle,
3743 ParallelPosition( 0.5*staveThickness, -parMovement, angle,
3746 ParallelPosition( 0.5*staveThickness, parMovement, angle,
3749 // then we go into the true reference frame
3754 // using the parameters found here, compute the
3755 // translation and rotation of this stave:
3756 TGeoRotation *rot = new TGeoRotation(*gGeoIdentity);
3757 if (i == 0 || i == 1) rot->RotateX(180.0);
3758 rot->RotateZ(90.0 + angle * TMath::RadToDeg());
3759 TGeoCombiTrans *trans = new TGeoCombiTrans(xPos, yPos, 0.0, rot);
3760 if (i == 0 || i == 1) {
3761 moth->AddNode(stave1, i+1, trans);
3763 moth->AddNode(stave2, i - 1, trans);
3765 // except in the case of stave #2,
3766 // clips must be added, and this is done directly on the sector
3769 TGeoRotation *rotClip = new TGeoRotation(*gGeoIdentity);
3770 rotClip->RotateZ(-90.0);
3771 rotClip->RotateX(180.0);
3772 Double_t x = staveSizes2[3] + fgkGapHalfStave;
3773 Double_t y = staveSizes2[4];
3774 Double_t z[4] = { staveSizes2[5], staveSizes2[6],
3775 staveSizes2[7], staveSizes2[8] };
3776 for (j = 0; j < 4; j++) {
3777 TGeoCombiTrans *trClip = new TGeoCombiTrans(x, y, z[j],
3779 *trClip = *trans * *trClip;
3780 moth->AddNode(clip, iclip++, trClip);
3783 } // end if i==0||i==1 else
3786 //______________________________________________________________________
3787 void AliITSv11GeometrySPD::ParallelPosition(Double_t dist1, Double_t dist2,
3788 Double_t phi, Double_t &x, Double_t &y) const
3791 // Performs the following steps:
3792 // 1 - finds a straight line parallel to the one passing through
3793 // the origin and with angle 'phi' with X axis(phi in RADIANS);
3794 // 2 - finds another line parallel to the previous one, with a
3795 // distance 'dist1' from it
3796 // 3 - takes a reference point in the second line in the intersection
3797 // between the normal to both lines passing through the origin
3798 // 4 - finds a point whith has distance 'dist2' from this reference,
3799 // in the second line (point 2)
3801 // According to the signs given to dist1 and dist2, the point is
3802 // found in different position w.r. to the origin
3803 // compute the point
3805 Double_t cs = TMath::Cos(phi);
3806 Double_t sn = TMath::Sin(phi);
3808 x = dist2*cs - dist1*sn;
3809 y = dist1*cs + dist2*sn;
3811 //______________________________________________________________________
3812 Double_t AliITSv11GeometrySPD::GetSPDSectorTranslation(
3813 Double_t x0,Double_t y0,Double_t x1,Double_t y1,Double_t r) const
3816 // Comutes the radial translation of a sector to give the
3817 // proper distance between SPD detectors and the beam pipe.
3818 // Units in are units out.
3823 <A HREF="http://www.physics.ohio-state.edu/HIRG/SoftWareDoc/SPD_Sector_Position.png">
3824 Figure showing the geometry used in the computation below. </A>
3829 // Double_t x0 Point x0 on Sector surface for the inner
3830 // most detector mounting
3831 // Double_t y0 Point y0 on Sector surface for the innor
3832 // most detector mounting
3833 // Double_t x1 Point x1 on Sector surface for the inner
3834 // most detector mounting
3835 // Double_t y1 Point y1 on Sector surface for the innor
3836 // most detector mounting
3837 // Double_t r The radial distance this mounting surface
3838 // should be from the center of the beam pipe.
3842 // The distance the SPD sector should be displaced radialy.
3847 if(a==0.0) return 0.0;
3849 b = TMath::Sqrt(1.0+a*a);
3853 //______________________________________________________________________
3854 void AliITSv11GeometrySPD::CreateFigure0(const Char_t *filepath,
3856 TGeoManager *mgr) const
3859 // Creates Figure 0 for the documentation of this class. In this
3860 // specific case, it creates the X,Y cross section of the SPD suport
3861 // section, center and ends. The output is written to a standard
3862 // file name to the path specificed.
3864 // const Char_t *filepath Path where the figure is to be drawn
3865 // const Char_t *type The type of file, default is gif.
3866 // TGeoManager *mgr The TGeoManager default gGeoManager
3872 TGeoXtru *sA0,*sA1,*sB0,*sB1;
3873 //TPolyMarker *pmA,*pmB;
3874 TPolyLine plA0,plA1,plB0,plB1;
3877 Double_t x=0.0,y=0.0;
3880 if(strcmp(filepath,"")){
3881 Error("CreateFigure0","filepath=%s type=%s",filepath,type);
3884 sA0 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorA0_1")->
3886 sA1 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorAirA1_1")->
3888 sB0 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndB0_1")->
3890 sB1 = (TGeoXtru*) mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndAirB1_1"
3892 //pmA = new TPolyMarker();
3893 //pmA.SetMarkerStyle(2); // +
3894 //pmA.SetMarkerColor(7); // light blue
3895 //pmB = new TPolyMarker();
3896 //pmB.SetMarkerStyle(5); // X
3897 //pmB.SetMarkerColor(6); // purple
3898 plA0.SetPolyLine(sA0->GetNvert());
3899 plA0.SetLineColor(1); // black
3900 plA0.SetLineStyle(1);
3901 plA1.SetPolyLine(sA1->GetNvert());
3902 plA1.SetLineColor(2); // red
3903 plA1.SetLineStyle(1);
3904 plB0.SetPolyLine(sB0->GetNvert());
3905 plB0.SetLineColor(3); // Green
3906 plB0.SetLineStyle(2);
3907 plB1.SetPolyLine(sB1->GetNvert());
3908 plB1.SetLineColor(4); // Blue
3909 plB1.SetLineStyle(2);
3910 //for(i=0;i<kNRadii;i++) pmA.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
3911 //for(i=0;i<kNRadii;i++) pmB.SetPoint(i,xyB1p[i][0],xyB1p[i][1]);
3912 for(i=0;i<sA0->GetNvert();i++) plA0.SetPoint(i,sA0->GetX(i),sA0->GetY(i));
3913 for(i=0;i<sA1->GetNvert();i++) plA1.SetPoint(i,sA1->GetX(i),sA1->GetY(i));
3914 for(i=0;i<sB0->GetNvert();i++) plB0.SetPoint(i,sB0->GetX(i),sB0->GetY(i));
3915 for(i=0;i<sB1->GetNvert();i++) plB1.SetPoint(i,sB1->GetX(i),sB1->GetY(i));
3916 canvas = new TCanvas("AliITSv11GeometrySPDFig0","",1000,1000);
3917 canvas->Range(-3.,-3.,3.,3.);
3918 txt.SetTextSize(0.05);
3919 txt.SetTextAlign(33);
3920 txt.SetTextColor(1);
3921 txt.DrawLatex(2.9,2.9,"Section A-A outer Carbon Fiber surface");
3922 txt.SetTextColor(2);
3923 txt.DrawLatex(2.9,2.5,"Section A-A Inner Carbon Fiber surface");
3924 txt.SetTextColor(3);
3925 txt.DrawLatex(2.9,2.1,"Section E-E outer Carbon Fiber surface");
3926 txt.SetTextColor(4);
3927 txt.DrawLatex(2.9,1.7,"Section E-E Inner Carbon Fiber surface");
3938 for(i=0;i<kNRadii;i++){
3939 sprintf(chr,"%2d",i);txt.DrawLatex(x-0.1,y,chr);
3940 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x,y,chr);
3941 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+0.5,y,chr);
3942 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.0,y,chr);
3943 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+1.5,y,chr);
3944 sprintf(chr,"%8.4f",5.000);txt.DrawLatex(x+2.0,y,chr);
3945 if(kTRUE) txt.DrawLatex(x+2.5,y,"A-A/E-E");
3946 else txt.DrawLatex(x+2.5,y,"E-E");
3948 txt.DrawLatex(x,y,"x_{c} mm");
3949 txt.DrawLatex(x+0.5,y,"y_{c} mm");
3950 txt.DrawLatex(x+1.0,y,"R mm");
3951 txt.DrawLatex(x+1.5,y,"#theta_{start}^{#circle}");
3952 txt.DrawLatex(x+2.0,y,"#theta_{end}^{#circle}");
3953 txt.DrawLatex(x+2.5,y,"Section");
3956 //______________________________________________________________________
3957 void AliITSv11GeometrySPD::PrintAscii(ostream *os) const
3960 // Print out class data values in Ascii Form to output stream
3962 // ostream *os Output stream where Ascii data is to be writen
3969 #if defined __GNUC__
3971 ios::fmtflags fmt = cout.flags();
3976 #if defined __ICC || defined __ECC || defined __xlC__
3983 *os<< fgkGapLadder <<" "<< fgkGapHalfStave<<" "<< 6 <<" ";
3984 for(i=0;i<6;i++) *os<< fAddStave[i] <<" "<<fSPDsectorX0.GetSize();
3985 for(i=0;i<fSPDsectorX0.GetSize();i++) *os<< fSPDsectorX0.GetAt(i) << " ";
3986 for(i=0;i<fSPDsectorX0.GetSize();i++) *os<< fSPDsectorY0.GetAt(i) << " ";
3987 for(i=0;i<fSPDsectorX1.GetSize();i++) *os<< fSPDsectorX1.GetAt(i) << " ";
3988 for(i=0;i<fSPDsectorX1.GetSize();i++) *os<< fSPDsectorY1.GetAt(i) << " ";
3989 *os<<10<<" "<< 2 <<" " << 6 << " "<< 3 <<" ";
3990 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
3991 *os<<fTubeEndSector[k][0][i][j]<<" ";
3992 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
3993 *os<<fTubeEndSector[k][1][i][j]<<" ";
3994 os->flags(fmt); // reset back to old Formating.
3998 //______________________________________________________________________
3999 void AliITSv11GeometrySPD::ReadAscii(istream* is)
4002 // Read in class data values in Ascii Form to output stream
4004 // istream *is Input stream where Ascii data is to be read in from
4011 Double_t gapLadder,GapHalfStave;
4013 *is>>gapLadder>>GapHalfStave>>n;
4015 Warning("ReadAscii","fAddStave Array !=6 n=%d",n);
4018 for(i=0;i<n;i++) *is>>fAddStave[i];
4020 fSPDsectorX0.Set(n);
4021 fSPDsectorY0.Set(n);
4022 fSPDsectorX1.Set(n);
4023 fSPDsectorY1.Set(n);
4024 for(i=0;i<n;i++) *is>>fSPDsectorX0[i];
4025 for(i=0;i<n;i++) *is>>fSPDsectorY0[i];
4026 for(i=0;i<n;i++) *is>>fSPDsectorX1[i];
4027 for(i=0;i<n;i++) *is>>fSPDsectorY1[i];
4029 if(i!=2||j!=6||n!=3){
4030 Warning("ReadAscii","fTubeEndSector array wrong size [2][6][3],"
4031 "found [%d][%d][%d]",i,j,n);
4034 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4035 *is>>fTubeEndSector[k][0][i][j];
4036 for(k=0;k<10;k++)for(i=0;i<6;i++)for(j=0;j<3;j++)
4037 *is>>fTubeEndSector[k][1][i][j];
4041 //______________________________________________________________________
4042 ostream &operator<<(ostream &os,const AliITSv11GeometrySPD &s)
4045 // Standard output streaming function
4047 // ostream &os output steam
4048 // AliITSvPPRasymmFMD &s class to be streamed.
4052 // ostream &os The stream pointer
4058 //______________________________________________________________________
4059 istream &operator>>(istream &is,AliITSv11GeometrySPD &s)
4062 // Standard inputput streaming function
4064 // istream &is input steam
4065 // AliITSvPPRasymmFMD &s class to be streamed.
4069 // ostream &os The stream pointer
4075 //______________________________________________________________________
4076 Bool_t AliITSv11GeometrySPD::Make2DCrossSections(TPolyLine &a0,TPolyLine &a1,
4077 TPolyLine &b0,TPolyLine &b1,TPolyMarker &p)const
4080 // Fill the objects with the points representing
4081 // a0 the outer carbon fiber SPD sector shape Cross Section A
4082 // a1 the inner carbon fiber SPD sector shape Cross Section A
4083 // b0 the outer carbon fiber SPD sector shape Cross Section B
4084 // b1 the inner carbon fiber SPD sector shape Cross Section B
4087 // TPolyLine &a0 The outer carbon fiber SPD sector shape
4088 // TPolyLine &a1 The Inner carbon fiber SPD sector shape
4089 // TPolyLine &b0 The outer carbon fiber SPD sector shape
4090 // TPolyLine &b1 The Inner carbon fiber SPD sector shape
4091 // TPolyMarker &p The points where the ladders are to be placed
4093 // TPolyLine &a0 The shape filled with the points
4094 // TPolyLine &a1 The shape filled with the points
4095 // TPolyLine &b0 The shape filled with the points
4096 // TPolyLine &b1 The shape filled with the points
4097 // TPolyMarker &p The filled array of points
4103 TGeoVolume *a0V,*a1V,*b0V,*b1V;
4104 TGeoXtru *a0S,*a1S,*b0S,*b1S;
4105 TGeoManager *mgr = gGeoManager;
4107 a0V = mgr->GetVolume("ITS SPD Carbon fiber support Sector A0");
4108 a0S = dynamic_cast<TGeoXtru*>(a0V->GetShape());
4109 n0 = a0S->GetNvert();
4110 a0.SetPolyLine(n0+1);
4111 //for(i=0;i<fSPDsectorPoints0.GetSize();i++)
4112 // printf("%d %d %d\n",i,fSPDsectorPoints0[i],fSPDsectorPoints1[i]);
4116 //printf("%d %g %g\n",i,x,y);
4118 if(i==0) a0.SetPoint(n0,x,y);
4120 a1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorAirA1");
4121 a1S = dynamic_cast<TGeoXtru*>(a1V->GetShape());
4122 n1 = a1S->GetNvert();
4123 a1.SetPolyLine(n1+1);
4128 if(i==0) a1.SetPoint(n1,x,y);
4131 b0V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndB0");
4132 b0S = dynamic_cast<TGeoXtru*>(b0V->GetShape());
4133 n0 = b0S->GetNvert();
4134 b0.SetPolyLine(n0+1);
4139 if(i==0) b0.SetPoint(n0,x,y);
4141 b1V = mgr->GetVolume("ITSSPDCarbonFiberSupportSectorEndAirB1");
4142 b1S = dynamic_cast<TGeoXtru*>(b1V->GetShape());
4143 n1 = b1S->GetNvert();
4144 b1.SetPolyLine(n1+1);
4149 if(i==0) b1.SetPoint(n1,x,y);
4152 Double_t x0,y0,x1,y1;
4153 p.SetPolyMarker(2*fSPDsectorX0.GetSize());
4154 for(i=0;i<fSPDsectorX0.GetSize();i++){
4155 GetSectorMountingPoints(i,x0,y0,x1,y1);
4156 p.SetPoint(2*i,x0,y0);
4157 p.SetPoint(2*i+1,x1,y1);