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4c039060 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/*
17$Log$
faea7205 18Revision 1.34 2001/11/14 10:50:45 cblume
19Changes in digits IO. Add merging of summable digits
20
abaf1f1d 21Revision 1.33 2001/11/06 17:19:41 cblume
22Add detailed geometry and simple simulator
23
16bf9884 24Revision 1.32 2001/10/08 06:57:33 hristov
25Branches for TRD digits are created only during the digitisation
26
aa9d00f0 27Revision 1.31 2001/08/30 09:30:30 hristov
28The split level of branches is set to 99
29
40c7ef21 30Revision 1.30 2001/05/28 17:07:58 hristov
31Last minute changes; ExB correction in AliTRDclusterizerV1; taking into account of material in G10 TEC frames and material between TEC planes (C.Blume,S.Sedykh)
32
a819a5f7 33Revision 1.29 2001/05/21 16:45:47 hristov
34Last minute changes (C.Blume)
35
db30bf0f 36Revision 1.28 2001/05/16 14:57:27 alibrary
37New files for folders and Stack
38
39Revision 1.27 2001/05/08 07:05:02 hristov
40Loop variable declared once (HP, Sun)
41
ea01d9e4 42Revision 1.26 2001/05/07 08:03:22 cblume
43Generate also hits in the amplification region
44
f73816f5 45Revision 1.25 2001/03/13 09:30:35 cblume
46Update of digitization. Moved digit branch definition to AliTRD
47
6244debe 48Revision 1.24 2001/01/26 19:56:49 hristov
49Major upgrade of AliRoot code
50
2ab0c725 51Revision 1.23 2000/11/01 14:53:20 cblume
52Merge with TRD-develop
53
793ff80c 54Revision 1.17.2.6 2000/10/15 23:29:08 cblume
55Introduced more detailed geometry for the display
56
57Revision 1.17.2.5 2000/10/06 16:49:46 cblume
58Made Getters const
59
60Revision 1.17.2.4 2000/10/04 16:34:57 cblume
61Replace include files by forward declarations
62
63Revision 1.17.2.3 2000/09/22 14:45:17 cblume
64Included changes for the tracking
65
66Revision 1.17.2.2 2000/09/18 13:25:13 cblume
67Included LoadPoints() method to display the TR photons
68
69Revision 1.22 2000/10/02 21:28:19 fca
70Removal of useless dependecies via forward declarations
71
72Revision 1.21 2000/06/09 11:10:07 cblume
73Compiler warnings and coding conventions, next round
74
75Revision 1.20 2000/06/08 18:32:57 cblume
76Make code compliant to coding conventions
77
78Revision 1.19 2000/06/07 16:25:37 cblume
79Try to remove compiler warnings on Sun and HP
80
81Revision 1.18 2000/05/08 16:17:27 cblume
82Merge TRD-develop
83
94de3818 84Revision 1.21 2000/06/09 11:10:07 cblume
85Compiler warnings and coding conventions, next round
86
dd9a6ee3 87Revision 1.20 2000/06/08 18:32:57 cblume
88Make code compliant to coding conventions
89
8230f242 90Revision 1.19 2000/06/07 16:25:37 cblume
91Try to remove compiler warnings on Sun and HP
92
9d0b222b 93Revision 1.18 2000/05/08 16:17:27 cblume
94Merge TRD-develop
95
6f1e466d 96Revision 1.17.2.1 2000/05/08 14:28:59 cblume
97Introduced SetPHOShole() and SetRICHhole(). AliTRDrecPoint container is now a TObjArray
98
99Revision 1.17 2000/02/28 19:10:26 cblume
100Include the new TRD classes
101
851d3db9 102Revision 1.16.2.2 2000/02/28 17:53:24 cblume
103Introduce TRD geometry classes
104
105Revision 1.16.2.1 2000/02/28 17:04:19 cblume
106Include functions and data members for AliTRDrecPoint
107
108Revision 1.16 2000/01/19 17:17:35 fca
109Introducing a list of lists of hits -- more hits allowed for detector now
110
1cedd08a 111Revision 1.15 1999/11/02 17:04:25 fca
112Small syntax change for HP compiler
113
94c641ff 114Revision 1.14 1999/11/02 16:57:02 fca
115Avoid non ansi warnings on HP compilers
116
8459a454 117Revision 1.13 1999/11/02 16:35:56 fca
118New version of TRD introduced
119
5c7f4665 120Revision 1.12 1999/11/01 20:41:51 fca
121Added protections against using the wrong version of FRAME
122
ab76897d 123Revision 1.11 1999/09/29 09:24:34 fca
124Introduction of the Copyright and cvs Log
125
4c039060 126*/
127
fe4da5cc 128///////////////////////////////////////////////////////////////////////////////
129// //
130// Transition Radiation Detector //
131// This class contains the basic functions for the Transition Radiation //
6f1e466d 132// Detector. //
fe4da5cc 133// //
134///////////////////////////////////////////////////////////////////////////////
135
5c7f4665 136#include <stdlib.h>
2ab0c725 137#include <iostream.h>
5c7f4665 138
fe4da5cc 139#include <TMath.h>
fe4da5cc 140#include <TNode.h>
94de3818 141#include <TGeometry.h>
793ff80c 142#include <TTree.h>
143#include <TPGON.h>
abaf1f1d 144#include <TFile.h>
145#include <TROOT.h>
fe4da5cc 146
fe4da5cc 147#include "AliRun.h"
d3f347ff 148#include "AliConst.h"
793ff80c 149#include "AliDigit.h"
150#include "AliMagF.h"
151#include "AliMC.h"
152
153#include "AliTRD.h"
154#include "AliTRDhit.h"
155#include "AliTRDpoints.h"
156#include "AliTRDdigit.h"
851d3db9 157#include "AliTRDdigitizer.h"
158#include "AliTRDclusterizer.h"
159#include "AliTRDgeometryHole.h"
160#include "AliTRDgeometryFull.h"
161#include "AliTRDrecPoint.h"
f73816f5 162#include "AliTRDcluster.h"
2ab0c725 163#include "AliTRDdigitsManager.h"
793ff80c 164
fe4da5cc 165ClassImp(AliTRD)
166
167//_____________________________________________________________________________
168AliTRD::AliTRD()
169{
170 //
171 // Default constructor
172 //
82bbf98a 173
6244debe 174 fIshunt = 0;
175 fGasMix = 0;
176 fHits = 0;
177 fDigits = 0;
5c7f4665 178
6244debe 179 fRecPoints = 0;
180 fNRecPoints = 0;
5c7f4665 181
6244debe 182 fGeometry = 0;
82bbf98a 183
6244debe 184 fGasDensity = 0;
185 fFoilDensity = 0;
793ff80c 186
6244debe 187 fDrawTR = 0;
188 fDisplayType = 0;
189
fe4da5cc 190}
191
192//_____________________________________________________________________________
193AliTRD::AliTRD(const char *name, const char *title)
194 : AliDetector(name,title)
195{
196 //
197 // Standard constructor for the TRD
198 //
199
5c7f4665 200 // Check that FRAME is there otherwise we have no place where to
201 // put TRD
8230f242 202 AliModule* frame = gAlice->GetModule("FRAME");
203 if (!frame) {
5c7f4665 204 Error("Ctor","TRD needs FRAME to be present\n");
205 exit(1);
206 }
207
208 // Define the TRD geometry according to the FRAME geometry
8230f242 209 if (frame->IsVersion() == 0) {
851d3db9 210 // Geometry with hole
211 fGeometry = new AliTRDgeometryHole();
212 }
8230f242 213 else if (frame->IsVersion() == 1) {
851d3db9 214 // Geometry without hole
215 fGeometry = new AliTRDgeometryFull();
216 }
217 else {
218 Error("Ctor","Could not find valid FRAME version\n");
219 exit(1);
220 }
5c7f4665 221
fe4da5cc 222 // Allocate the hit array
f73816f5 223 fHits = new TClonesArray("AliTRDhit" ,405);
1cedd08a 224 gAlice->AddHitList(fHits);
99d5402e 225
226 // Allocate the digits array
f73816f5 227 fDigits = 0;
5c7f4665 228
851d3db9 229 // Allocate the rec point array
6244debe 230 fRecPoints = new TObjArray(400);
231 fNRecPoints = 0;
99d5402e 232
6244debe 233 fIshunt = 0;
234 fGasMix = 1;
793ff80c 235
6244debe 236 fGasDensity = 0;
237 fFoilDensity = 0;
793ff80c 238
6244debe 239 fDrawTR = 0;
240 fDisplayType = 0;
241
fe4da5cc 242 SetMarkerColor(kWhite);
82bbf98a 243
fe4da5cc 244}
99d5402e 245
8230f242 246//_____________________________________________________________________________
dd9a6ee3 247AliTRD::AliTRD(const AliTRD &trd)
8230f242 248{
249 //
250 // Copy constructor
251 //
252
dd9a6ee3 253 ((AliTRD &) trd).Copy(*this);
8230f242 254
255}
256
99d5402e 257//_____________________________________________________________________________
258AliTRD::~AliTRD()
259{
260 //
261 // TRD destructor
262 //
263
264 fIshunt = 0;
265
abaf1f1d 266 if (fGeometry) {
267 delete fGeometry;
268 }
269 if (fHits) {
270 delete fHits;
271 }
272 if (fRecPoints) {
273 delete fRecPoints;
6244debe 274 }
5c7f4665 275
276}
277
278//_____________________________________________________________________________
f73816f5 279void AliTRD::AddCluster(Float_t *pos, Int_t *digits, Int_t det, Float_t amp
a819a5f7 280 , Int_t *tracks, Float_t sigmaY2, Int_t iType)
5c7f4665 281{
282 //
f73816f5 283 // Add a cluster for the TRD
851d3db9 284 //
793ff80c 285
f73816f5 286 Int_t pla = fGeometry->GetPlane(det);
287 Int_t cha = fGeometry->GetChamber(det);
288 Int_t sec = fGeometry->GetSector(det);
289
290 Float_t padRow = pos[0];
291 Float_t padCol = pos[1];
292 Float_t row0 = fGeometry->GetRow0(pla,cha,sec);
293 Float_t col0 = fGeometry->GetCol0(pla);
294 Float_t rowSize = fGeometry->GetRowPadSize(pla,cha,sec);
295 Float_t colSize = fGeometry->GetColPadSize(pla);
296
297 AliTRDcluster *c = new AliTRDcluster();
298
299 c->SetDetector(det);
300 c->AddTrackIndex(tracks);
99d5402e 301
f73816f5 302 c->SetQ(amp);
303
304 c->SetLocalTimeBin(((Int_t) pos[2]));
305 c->SetY(- (col0 + padCol * colSize));
306 c->SetZ( row0 + padRow * rowSize);
307
a819a5f7 308 c->SetSigmaY2((sigmaY2 + 1./12.) * colSize*colSize);
f73816f5 309 c->SetSigmaZ2(rowSize * rowSize / 12.);
310
db30bf0f 311 switch (iType) {
312 case 0:
313 c->Set2pad();
314 break;
315 case 1:
316 c->Set3pad();
317 break;
318 case 2:
319 c->Set4pad();
320 break;
321 case 3:
322 c->Set5pad();
323 break;
324 case 4:
325 c->SetLarge();
326 break;
327 };
793ff80c 328
f73816f5 329 fRecPoints->Add(c);
6f1e466d 330
99d5402e 331}
6244debe 332
333//_____________________________________________________________________________
334void AliTRD::Hits2Digits()
2ab0c725 335{
336 //
337 // Create digits
338 //
6244debe 339
340 AliTRDdigitizer *digitizer = new AliTRDdigitizer("TRDdigitizer"
341 ,"TRD digitizer class");
abaf1f1d 342 digitizer->SetVerbose(GetDebug());
2ab0c725 343
344 // Set the parameter
6244debe 345 digitizer->SetDiffusion();
346 digitizer->SetExB();
9e1a0ddb 347 digitizer->SetEvent(gAlice->GetEvNumber());
abaf1f1d 348
6244debe 349 // Initialization
db30bf0f 350 digitizer->InitDetector();
6244debe 351
352 // Create the digits
353 digitizer->MakeDigits();
2ab0c725 354
6244debe 355 // Write the digits into the input file
abaf1f1d 356 if (digitizer->MakeBranch(fDigitsFile)) {
6244debe 357
358 digitizer->WriteDigits();
359
360 // Save the digitizer class in the AliROOT
361 digitizer->Write();
362
363 }
364
365}
366
367//_____________________________________________________________________________
368void AliTRD::Hits2SDigits()
369{
370 //
371 // Create summable digits
372 //
373
374 AliTRDdigitizer *digitizer = new AliTRDdigitizer("TRDdigitizer"
375 ,"TRD digitizer class");
abaf1f1d 376 digitizer->SetVerbose(GetDebug());
6244debe 377
378 // For the summable digits
379 digitizer->SetSDigits(kTRUE);
2ab0c725 380
6244debe 381 // Set the parameter
382 digitizer->SetDiffusion();
383 digitizer->SetExB();
9e1a0ddb 384 digitizer->SetEvent(gAlice->GetEvNumber());
6244debe 385
386 // Initialization
db30bf0f 387 digitizer->InitDetector();
2ab0c725 388
abaf1f1d 389 // Create the TRD s-digits branch
6244debe 390 digitizer->MakeDigits();
2ab0c725 391
392 // Write the digits into the input file
abaf1f1d 393 if (digitizer->MakeBranch(fDigitsFile)) {
6244debe 394
395 digitizer->WriteDigits();
2ab0c725 396
397 // Save the digitizer class in the AliROOT
6244debe 398 digitizer->Write();
399
2ab0c725 400 }
6244debe 401
402}
403
404//_____________________________________________________________________________
405void AliTRD::SDigits2Digits()
406{
407 //
408 // Create final digits from summable digits
409 //
410
abaf1f1d 411 // Create the TRD digitizer
412 AliTRDdigitizer *digitizer = new AliTRDdigitizer("TRDdigitizer"
413 ,"TRD digitizer class");
414 digitizer->SetVerbose(GetDebug());
99d5402e 415
abaf1f1d 416 // Set the parameter
417 digitizer->SetEvent(gAlice->GetEvNumber());
418
419 // Initialization
420 digitizer->InitDetector();
421
422 // Read the s-digits via digits manager
423 AliTRDdigitsManager *sdigitsManager = new AliTRDdigitsManager();
424 sdigitsManager->SetVerbose(GetDebug());
425 sdigitsManager->SetSDigits(kTRUE);
426 if (fDigitsFile) {
427 sdigitsManager->Open(fDigitsFile);
428 }
429 sdigitsManager->CreateArrays();
430 sdigitsManager->ReadDigits();
431
432 // Add the s-digits to the input list
433 digitizer->AddSDigitsManager(sdigitsManager);
99d5402e 434
abaf1f1d 435 // Convert the s-digits to normal digits
436 digitizer->SDigits2Digits();
437
438 // Store the digits
439 if (digitizer->MakeBranch(fDigitsFile)) {
440
441 digitizer->WriteDigits();
442
443 }
99d5402e 444
445}
446
fe4da5cc 447//_____________________________________________________________________________
793ff80c 448void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q)
fe4da5cc 449{
450 //
451 // Add a hit for the TRD
452 //
82bbf98a 453
fe4da5cc 454 TClonesArray &lhits = *fHits;
793ff80c 455 new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
82bbf98a 456
fe4da5cc 457}
458
459//_____________________________________________________________________________
460void AliTRD::BuildGeometry()
461{
462 //
463 // Create the ROOT TNode geometry for the TRD
464 //
82bbf98a 465
8230f242 466 TNode *node, *top;
fe4da5cc 467 TPGON *pgon;
793ff80c 468
469 Float_t rmin, rmax;
470 Float_t zmax1, zmax2;
db30bf0f 471
472 Int_t iPlan;
793ff80c 473
fe4da5cc 474 const Int_t kColorTRD = 46;
d3f347ff 475
fe4da5cc 476 // Find the top node alice
8230f242 477 top = gAlice->GetGeometry()->GetNode("alice");
d3f347ff 478
db30bf0f 479 if (fDisplayType == 0) {
793ff80c 480
481 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
482 rmin = AliTRDgeometry::Rmin();
483 rmax = AliTRDgeometry::Rmax();
484 pgon->DefineSection(0,-AliTRDgeometry::Zmax1(),rmax,rmax);
485 pgon->DefineSection(1,-AliTRDgeometry::Zmax2(),rmin,rmax);
486 pgon->DefineSection(2, AliTRDgeometry::Zmax2(),rmin,rmax);
487 pgon->DefineSection(3, AliTRDgeometry::Zmax1(),rmax,rmax);
488 top->cd();
489 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
490 node->SetLineColor(kColorTRD);
491 fNodes->Add(node);
492
db30bf0f 493 }
494 else if (fDisplayType == 1) {
793ff80c 495
f73816f5 496 Char_t name[7];
497
793ff80c 498 Float_t slope = (AliTRDgeometry::Zmax1() - AliTRDgeometry::Zmax2())
499 / (AliTRDgeometry::Rmax() - AliTRDgeometry::Rmin());
500
f73816f5 501 rmin = AliTRDgeometry::Rmin() + AliTRDgeometry::Ccframe()/2.
502 + AliTRDgeometry::DrZpos()
503 - AliTRDgeometry::DrThick()/2.;
793ff80c 504 rmax = rmin + AliTRDgeometry::DrThick();
f73816f5 505
506 Float_t thickness = rmin - AliTRDgeometry::Rmin();
507 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
793ff80c 508 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
793ff80c 509
db30bf0f 510 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
793ff80c 511
f73816f5 512 sprintf(name,"S_TR1%d",iPlan);
513 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
514 pgon->DefineSection(0,-zmax1,rmax,rmax);
515 pgon->DefineSection(1,-zmax2,rmin,rmax);
516 pgon->DefineSection(2, zmax2,rmin,rmax);
517 pgon->DefineSection(3, zmax1,rmax,rmax);
518 top->cd();
519 node = new TNode("TRD","TRD",name,0,0,0,"");
520 node->SetLineColor(kColorTRD);
521 fNodes->Add(node);
522
523 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
524 rmin = rmin + height;
525 rmax = rmax + height;
526 zmax1 = zmax1 + slope * height;
527 zmax2 = zmax2 + slope * height;
528
529 }
530
531 thickness += AliTRDgeometry::DrThick();
532 rmin = AliTRDgeometry::Rmin() + thickness;
533 rmax = rmin + AliTRDgeometry::AmThick();
534 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
535 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
536
db30bf0f 537 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
f73816f5 538
539 sprintf(name,"S_TR2%d",iPlan);
793ff80c 540 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
541 pgon->DefineSection(0,-zmax1,rmax,rmax);
542 pgon->DefineSection(1,-zmax2,rmin,rmax);
543 pgon->DefineSection(2, zmax2,rmin,rmax);
544 pgon->DefineSection(3, zmax1,rmax,rmax);
545 top->cd();
546 node = new TNode("TRD","TRD",name,0,0,0,"");
547 node->SetLineColor(kColorTRD);
548 fNodes->Add(node);
549
550 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
551 rmin = rmin + height;
552 rmax = rmax + height;
553 zmax1 = zmax1 + slope * height;
554 zmax2 = zmax2 + slope * height;
555
556 }
557
db30bf0f 558 }
d3f347ff 559
fe4da5cc 560}
561
8230f242 562//_____________________________________________________________________________
dd9a6ee3 563void AliTRD::Copy(TObject &trd)
8230f242 564{
565 //
566 // Copy function
567 //
568
793ff80c 569 ((AliTRD &) trd).fGasMix = fGasMix;
570 ((AliTRD &) trd).fGeometry = fGeometry;
571 ((AliTRD &) trd).fRecPoints = fRecPoints;
572 ((AliTRD &) trd).fNRecPoints = fNRecPoints;
573 ((AliTRD &) trd).fGasDensity = fGasDensity;
574 ((AliTRD &) trd).fFoilDensity = fFoilDensity;
575 ((AliTRD &) trd).fDrawTR = fDrawTR;
576 ((AliTRD &) trd).fDisplayType = fDisplayType;
8230f242 577
578 //AliDetector::Copy(trd);
579
580}
581
fe4da5cc 582//_____________________________________________________________________________
82bbf98a 583void AliTRD::CreateGeometry()
fe4da5cc 584{
82bbf98a 585 //
586 // Creates the volumes for the TRD chambers
587 //
82bbf98a 588
589 // Check that FRAME is there otherwise we have no place where to put the TRD
8230f242 590 AliModule* frame = gAlice->GetModule("FRAME");
591 if (!frame) {
851d3db9 592 printf(" The TRD needs the FRAME to be defined first\n");
593 return;
82bbf98a 594 }
d3f347ff 595
851d3db9 596 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
5c7f4665 597
82bbf98a 598}
599
600//_____________________________________________________________________________
601void AliTRD::CreateMaterials()
602{
fe4da5cc 603 //
604 // Create the materials for the TRD
605 // Origin Y.Foka
606 //
607
8230f242 608 Int_t isxfld = gAlice->Field()->Integ();
609 Float_t sxmgmx = gAlice->Field()->Max();
fe4da5cc 610
d3f347ff 611 // For polyethilene (CH2)
612 Float_t ape[2] = { 12., 1. };
613 Float_t zpe[2] = { 6., 1. };
614 Float_t wpe[2] = { 1., 2. };
615 Float_t dpe = 0.95;
616
617 // For mylar (C5H4O2)
618 Float_t amy[3] = { 12., 1., 16. };
619 Float_t zmy[3] = { 6., 1., 8. };
620 Float_t wmy[3] = { 5., 4., 2. };
fe4da5cc 621 Float_t dmy = 1.39;
d3f347ff 622
623 // For CO2
624 Float_t aco[2] = { 12., 16. };
625 Float_t zco[2] = { 6., 8. };
626 Float_t wco[2] = { 1., 2. };
627 Float_t dco = 0.001977;
628
629 // For water
630 Float_t awa[2] = { 1., 16. };
631 Float_t zwa[2] = { 1., 8. };
632 Float_t wwa[2] = { 2., 1. };
633 Float_t dwa = 1.0;
634
635 // For isobutane (C4H10)
636 Float_t ais[2] = { 12., 1. };
637 Float_t zis[2] = { 6., 1. };
638 Float_t wis[2] = { 4., 10. };
639 Float_t dis = 0.00267;
640
db30bf0f 641 // For plexiglas (C5H8O2)
642 Float_t apg[3] = { 12.011 , 1.0 , 15.9994 };
643 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
644 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
645 Float_t dpg = 1.18;
646
d3f347ff 647 // For Xe/CO2-gas-mixture
db30bf0f 648 // Xe-content of the Xe/CO2-mixture (85% / 15%)
649 Float_t fxc = .85;
d3f347ff 650 // Xe-content of the Xe/Isobutane-mixture (97% / 3%)
651 Float_t fxi = .97;
fe4da5cc 652 Float_t dxe = .005858;
653
d3f347ff 654 // General tracking parameter
fe4da5cc 655 Float_t tmaxfd = -10.;
656 Float_t stemax = -1e10;
d3f347ff 657 Float_t deemax = -0.1;
658 Float_t epsil = 1e-4;
659 Float_t stmin = -0.001;
fe4da5cc 660
661 Float_t absl, radl, d, buf[1];
793ff80c 662 Float_t agm[2], zgm[2], wgm[2];
663 Float_t dgm1, dgm2;
d3f347ff 664 Int_t nbuf;
fe4da5cc 665
d3f347ff 666 //////////////////////////////////////////////////////////////////////////
fe4da5cc 667 // Define Materials
d3f347ff 668 //////////////////////////////////////////////////////////////////////////
669
16bf9884 670 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
671 AliMaterial( 2, "Air" , 14.61, 7.3, 0.001205, 30420.0 , 67500.0);
672 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1447.59, 0.0);
673 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
674 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
675 AliMaterial(12, "G10" , 20.00, 10.0, 1.7 , 19.4 , 999.0);
676 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
677 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
678 AliMaterial(17, "Epoxy", 17.75, 8.9, 1.8 , 21.82, 999.0);
d3f347ff 679
680 // Mixtures
db30bf0f 681 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe);
682 AliMixture(7, "Mylar", amy, zmy, dmy, -3, wmy);
683 AliMixture(8, "CO2", aco, zco, dco, -2, wco);
684 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis);
685 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa);
686 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg);
d3f347ff 687
688 // Gas mixtures
82bbf98a 689 Char_t namate[21];
d3f347ff 690 // Xe/CO2-mixture
691 // Get properties of Xe
cfce8870 692 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
d3f347ff 693 // Get properties of CO2
cfce8870 694 gMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
d3f347ff 695 // Create gas mixture
696 wgm[0] = fxc;
697 wgm[1] = 1. - fxc;
793ff80c 698 dgm1 = wgm[0] * dxe + wgm[1] * dco;
db30bf0f 699 AliMixture(10, "Gas mixture 1", agm, zgm, dgm1, 2, wgm);
d3f347ff 700 // Xe/Isobutane-mixture
701 // Get properties of Xe
cfce8870 702 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
d3f347ff 703 // Get properties of Isobutane
cfce8870 704 gMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
d3f347ff 705 // Create gas mixture
706 wgm[0] = fxi;
707 wgm[1] = 1. - fxi;
793ff80c 708 dgm2 = wgm[0] * dxe + wgm[1] * dis;
db30bf0f 709 AliMixture(11, "Gas mixture 2", agm, zgm, dgm2, 2, wgm);
d3f347ff 710
711 //////////////////////////////////////////////////////////////////////////
fe4da5cc 712 // Tracking Media Parameters
d3f347ff 713 //////////////////////////////////////////////////////////////////////////
714
715 // Al Frame
db30bf0f 716 AliMedium(1, "Al Frame", 1, 0, isxfld, sxmgmx
d3f347ff 717 , tmaxfd, stemax, deemax, epsil, stmin);
718 // Air
db30bf0f 719 AliMedium(2, "Air", 2, 0, isxfld, sxmgmx
d3f347ff 720 , tmaxfd, stemax, deemax, epsil, stmin);
721 // Polyethilene
db30bf0f 722 AliMedium(3, "Radiator", 3, 0, isxfld, sxmgmx
d3f347ff 723 , tmaxfd, stemax, deemax, epsil, stmin);
724 // Xe
db30bf0f 725 AliMedium(4, "Xe", 4, 1, isxfld, sxmgmx
d3f347ff 726 , tmaxfd, stemax, deemax, epsil, stmin);
727 // Cu pads
db30bf0f 728 AliMedium(5, "Padplane", 5, 1, isxfld, sxmgmx
d3f347ff 729 , tmaxfd, stemax, deemax, epsil, stmin);
730 // Fee + cables
db30bf0f 731 AliMedium(6, "Readout", 1, 0, isxfld, sxmgmx
d3f347ff 732 , tmaxfd, stemax, deemax, epsil, stmin);
733 // C frame
db30bf0f 734 AliMedium(7, "C Frame", 6, 0, isxfld, sxmgmx
d3f347ff 735 , tmaxfd, stemax, deemax, epsil, stmin);
736 // Mylar foils
db30bf0f 737 AliMedium(8, "Mylar", 7, 0, isxfld, sxmgmx
d3f347ff 738 , tmaxfd, stemax, deemax, epsil, stmin);
739 if (fGasMix == 1) {
740 // Gas-mixture (Xe/CO2)
db30bf0f 741 AliMedium(9, "Gas-mix", 10, 1, isxfld, sxmgmx
d3f347ff 742 , tmaxfd, stemax, deemax, epsil, stmin);
743 }
744 else {
745 // Gas-mixture (Xe/Isobutane)
db30bf0f 746 AliMedium(9, "Gas-mix", 11, 1, isxfld, sxmgmx
d3f347ff 747 , tmaxfd, stemax, deemax, epsil, stmin);
748 }
749 // Nomex-honeycomb (use carbon for the time being)
db30bf0f 750 AliMedium(10, "Nomex", 6, 0, isxfld, sxmgmx
d3f347ff 751 , tmaxfd, stemax, deemax, epsil, stmin);
752 // Kapton foils (use Mylar for the time being)
db30bf0f 753 AliMedium(11, "Kapton", 7, 0, isxfld, sxmgmx
d3f347ff 754 , tmaxfd, stemax, deemax, epsil, stmin);
755 // Gas-filling of the radiator
db30bf0f 756 AliMedium(12, "CO2", 8, 0, isxfld, sxmgmx
d3f347ff 757 , tmaxfd, stemax, deemax, epsil, stmin);
758 // G10-plates
db30bf0f 759 AliMedium(13, "G10-plates",12, 0, isxfld, sxmgmx
d3f347ff 760 , tmaxfd, stemax, deemax, epsil, stmin);
761 // Cooling water
db30bf0f 762 AliMedium(14, "Water", 13, 0, isxfld, sxmgmx
763 , tmaxfd, stemax, deemax, epsil, stmin);
764 // Rohacell (plexiglas) for the radiator
765 AliMedium(15, "Rohacell", 14, 0, isxfld, sxmgmx
d3f347ff 766 , tmaxfd, stemax, deemax, epsil, stmin);
16bf9884 767 // Al layer in MCMs
768 AliMedium(16, "MCM-Al" , 1, 0, isxfld, sxmgmx
769 , tmaxfd, stemax, deemax, epsil, stmin);
770 // Sn layer in MCMs
771 AliMedium(17, "MCM-Sn" , 15, 0, isxfld, sxmgmx
772 , tmaxfd, stemax, deemax, epsil, stmin);
773 // Cu layer in MCMs
774 AliMedium(18, "MCM-Cu" , 5, 0, isxfld, sxmgmx
775 , tmaxfd, stemax, deemax, epsil, stmin);
776 // G10 layer in MCMs
777 AliMedium(19, "MCM-G10" , 12, 0, isxfld, sxmgmx
778 , tmaxfd, stemax, deemax, epsil, stmin);
779 // Si in readout chips
780 AliMedium(20, "Chip-Si" , 16, 0, isxfld, sxmgmx
781 , tmaxfd, stemax, deemax, epsil, stmin);
782 // Epoxy in readout chips
783 AliMedium(21, "Chip-Ep" , 17, 0, isxfld, sxmgmx
784 , tmaxfd, stemax, deemax, epsil, stmin);
785 // PE in connectors
786 AliMedium(22, "Conn-PE" , 3, 0, isxfld, sxmgmx
787 , tmaxfd, stemax, deemax, epsil, stmin);
788 // Cu in connectors
789 AliMedium(23, "Chip-Cu" , 5, 0, isxfld, sxmgmx
790 , tmaxfd, stemax, deemax, epsil, stmin);
791 // Al of cooling pipes
792 AliMedium(24, "Cooling" , 1, 0, isxfld, sxmgmx
793 , tmaxfd, stemax, deemax, epsil, stmin);
d3f347ff 794
793ff80c 795 // Save the density values for the TRD absorbtion
796 fFoilDensity = dmy;
797 if (fGasMix == 1)
798 fGasDensity = dgm1;
799 else
800 fGasDensity = dgm2;
801
fe4da5cc 802}
803
82bbf98a 804//_____________________________________________________________________________
805void AliTRD::DrawModule()
806{
807 //
808 // Draw a shaded view of the Transition Radiation Detector version 0
809 //
810
811 // Set everything unseen
812 gMC->Gsatt("*" ,"SEEN",-1);
813
814 // Set ALIC mother transparent
815 gMC->Gsatt("ALIC","SEEN", 0);
816
817 // Set the volumes visible
851d3db9 818 if (fGeometry->IsVersion() == 0) {
5c7f4665 819 gMC->Gsatt("B071","SEEN", 0);
820 gMC->Gsatt("B074","SEEN", 0);
821 gMC->Gsatt("B075","SEEN", 0);
822 gMC->Gsatt("B077","SEEN", 0);
823 gMC->Gsatt("BTR1","SEEN", 0);
824 gMC->Gsatt("BTR2","SEEN", 0);
825 gMC->Gsatt("BTR3","SEEN", 0);
826 gMC->Gsatt("TRD1","SEEN", 0);
827 gMC->Gsatt("TRD2","SEEN", 0);
828 gMC->Gsatt("TRD3","SEEN", 0);
829 }
830 else {
831 gMC->Gsatt("B071","SEEN", 0);
832 gMC->Gsatt("B074","SEEN", 0);
833 gMC->Gsatt("B075","SEEN", 0);
834 gMC->Gsatt("B077","SEEN", 0);
835 gMC->Gsatt("BTR1","SEEN", 0);
836 gMC->Gsatt("BTR2","SEEN", 0);
837 gMC->Gsatt("BTR3","SEEN", 0);
838 gMC->Gsatt("TRD1","SEEN", 0);
6f1e466d 839 if (fGeometry->GetPHOShole())
840 gMC->Gsatt("TRD2","SEEN", 0);
841 if (fGeometry->GetRICHhole())
842 gMC->Gsatt("TRD3","SEEN", 0);
5c7f4665 843 }
82bbf98a 844 gMC->Gsatt("UCII","SEEN", 0);
845 gMC->Gsatt("UCIM","SEEN", 0);
846 gMC->Gsatt("UCIO","SEEN", 0);
847 gMC->Gsatt("UL02","SEEN", 1);
848 gMC->Gsatt("UL05","SEEN", 1);
849 gMC->Gsatt("UL06","SEEN", 1);
850
851 gMC->Gdopt("hide", "on");
852 gMC->Gdopt("shad", "on");
853 gMC->Gsatt("*", "fill", 7);
854 gMC->SetClipBox(".");
855 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
856 gMC->DefaultRange();
857 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
858 gMC->Gdhead(1111, "Transition Radiation Detector");
859 gMC->Gdman(18, 4, "MAN");
860
861}
862
fe4da5cc 863//_____________________________________________________________________________
864Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
865{
866 //
867 // Distance between the mouse and the TRD detector on the screen
868 // Dummy routine
82bbf98a 869
870 return 9999;
871
fe4da5cc 872}
873
874//_____________________________________________________________________________
875void AliTRD::Init()
876{
877 //
851d3db9 878 // Initialize the TRD detector after the geometry has been created
fe4da5cc 879 //
82bbf98a 880
5c7f4665 881 Int_t i;
851d3db9 882
abaf1f1d 883 if (fDebug) {
9e1a0ddb 884 printf("\n%s: ",ClassName());
885 for (i = 0; i < 35; i++) printf("*");
886 printf(" TRD_INIT ");
887 for (i = 0; i < 35; i++) printf("*");
888 printf("\n");
889 }
5c7f4665 890
851d3db9 891 if (fGeometry->IsVersion() == 0) {
9e1a0ddb 892 printf("%s: Geometry for spaceframe with holes initialized\n",ClassName());
851d3db9 893 }
894 else if (fGeometry->IsVersion() == 1) {
9e1a0ddb 895 printf("%s: Geometry for spaceframe without holes initialized\n",ClassName());
6f1e466d 896 if (fGeometry->GetPHOShole())
9e1a0ddb 897 printf("%s: Leave space in front of PHOS free\n",ClassName());
6f1e466d 898 if (fGeometry->GetRICHhole())
9e1a0ddb 899 printf("%s: Leave space in front of RICH free\n",ClassName());
5c7f4665 900 }
9e1a0ddb 901
abaf1f1d 902 if (fGasMix == 1) {
db30bf0f 903 printf("%s: Gas Mixture: 85%% Xe + 15%% CO2\n",ClassName());
abaf1f1d 904 }
905 else {
9e1a0ddb 906 printf("%s: Gas Mixture: 97%% Xe + 3%% Isobutane\n",ClassName());
abaf1f1d 907 }
5c7f4665 908
909}
910
793ff80c 911//_____________________________________________________________________________
912void AliTRD::LoadPoints(Int_t track)
913{
914 //
915 // Store x, y, z of all hits in memory.
916 // Hit originating from TR photons are given a different color
917 //
918
919 if (!fDrawTR) {
920 AliDetector::LoadPoints(track);
921 return;
922 }
923
924 if (fHits == 0) return;
925
926 Int_t nhits = fHits->GetEntriesFast();
927 if (nhits == 0) return;
928
929 Int_t tracks = gAlice->GetNtrack();
930 if (fPoints == 0) fPoints = new TObjArray(tracks);
931
932 AliTRDhit *ahit;
933
934 Int_t *ntrkE = new Int_t[tracks];
935 Int_t *ntrkT = new Int_t[tracks];
936 Int_t *limiE = new Int_t[tracks];
937 Int_t *limiT = new Int_t[tracks];
938 Float_t **coorE = new Float_t*[tracks];
939 Float_t **coorT = new Float_t*[tracks];
940 for(Int_t i = 0; i < tracks; i++) {
941 ntrkE[i] = 0;
942 ntrkT[i] = 0;
943 coorE[i] = 0;
944 coorT[i] = 0;
945 limiE[i] = 0;
946 limiT[i] = 0;
947 }
948
949 AliTRDpoints *points = 0;
950 Float_t *fp = 0;
951 Int_t trk;
952 Int_t chunk = nhits / 4 + 1;
953
954 // Loop over all the hits and store their position
955 for (Int_t hit = 0; hit < nhits; hit++) {
956
957 ahit = (AliTRDhit *) fHits->UncheckedAt(hit);
958
959 // dEdx hits
f73816f5 960 if (ahit->FromDrift() || ahit->FromAmplification()) {
793ff80c 961
962 trk = ahit->GetTrack();
963 if (ntrkE[trk] == limiE[trk]) {
964 // Initialise a new track
965 fp = new Float_t[3*(limiE[trk]+chunk)];
966 if (coorE[trk]) {
967 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
968 delete [] coorE[trk];
969 }
970 limiE[trk] += chunk;
971 coorE[trk] = fp;
972 }
973 else {
974 fp = coorE[trk];
975 }
976 fp[3*ntrkE[trk] ] = ahit->X();
977 fp[3*ntrkE[trk]+1] = ahit->Y();
978 fp[3*ntrkE[trk]+2] = ahit->Z();
979 ntrkE[trk]++;
980
981 }
982 // TR photon hits
f73816f5 983 else if (ahit->FromTRphoton()) {
793ff80c 984
985 trk = ahit->GetTrack();
986 if (ntrkT[trk] == limiT[trk]) {
987 // Initialise a new track
988 fp = new Float_t[3*(limiT[trk]+chunk)];
989 if (coorT[trk]) {
990 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
991 delete [] coorT[trk];
992 }
993 limiT[trk] += chunk;
994 coorT[trk] = fp;
995 }
996 else {
997 fp = coorT[trk];
998 }
999 fp[3*ntrkT[trk] ] = ahit->X();
1000 fp[3*ntrkT[trk]+1] = ahit->Y();
1001 fp[3*ntrkT[trk]+2] = ahit->Z();
1002 ntrkT[trk]++;
1003
1004 }
1005
1006 }
1007
1008 for (trk = 0; trk < tracks; ++trk) {
1009
1010 if (ntrkE[trk] || ntrkT[trk]) {
1011
1012 points = new AliTRDpoints();
1013 points->SetDetector(this);
1014 points->SetParticle(trk);
1015
1016 // Set the dEdx points
1017 if (ntrkE[trk]) {
1018 points->SetMarkerColor(GetMarkerColor());
1019 points->SetMarkerSize(GetMarkerSize());
1020 points->SetPolyMarker(ntrkE[trk],coorE[trk],GetMarkerStyle());
1021 delete [] coorE[trk];
1022 coorE[trk] = 0;
1023 }
1024
1025 // Set the TR photon points
1026 if (ntrkT[trk]) {
1027 points->SetTRpoints(ntrkT[trk],coorT[trk]);
1028 delete [] coorT[trk];
1029 coorT[trk] = 0;
1030 }
1031
1032 fPoints->AddAt(points,trk);
1033
1034 }
1035
1036 }
1037
1038 delete [] coorE;
1039 delete [] coorT;
1040 delete [] ntrkE;
1041 delete [] ntrkT;
1042 delete [] limiE;
1043 delete [] limiT;
1044
1045}
1046
5c7f4665 1047//_____________________________________________________________________________
9e1a0ddb 1048void AliTRD::MakeBranch(Option_t* option, const char *file)
5c7f4665 1049{
1050 //
abaf1f1d 1051 // Create Tree branches for the TRD digits.
5c7f4665 1052 //
1053
abaf1f1d 1054 Int_t buffersize = 4000;
1055 Char_t branchname[15];
1056 sprintf(branchname,"%s",GetName());
5c7f4665 1057
aa9d00f0 1058 const char *cD = strstr(option,"D");
1059
2ab0c725 1060 AliDetector::MakeBranch(option,file);
5c7f4665 1061
abaf1f1d 1062 if (fDigits && gAlice->TreeD() && cD) {
1063 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,file);
1064 }
1065
851d3db9 1066}
1067
6244debe 1068//_____________________________________________________________________________
1069void AliTRD::ResetDigits()
1070{
1071 //
abaf1f1d 1072 // Reset number of digits and the digits array for this detector
6244debe 1073 //
1074
abaf1f1d 1075 fNdigits = 0;
1076 if (fDigits) fDigits->Clear();
6244debe 1077
1078}
1079
851d3db9 1080//_____________________________________________________________________________
1081void AliTRD::ResetRecPoints()
1082{
1083 //
1084 // Reset number of reconstructed points and the point array
1085 //
1086
f73816f5 1087 if (fRecPoints) {
793ff80c 1088 fNRecPoints = 0;
1089 Int_t nentr = fRecPoints->GetEntriesFast();
f73816f5 1090 for (Int_t i = 0; i < nentr; i++) delete fRecPoints->RemoveAt(i);
793ff80c 1091 }
5c7f4665 1092
1093}
1094
1095//_____________________________________________________________________________
1096void AliTRD::SetTreeAddress()
1097{
1098 //
1099 // Set the branch addresses for the trees.
1100 //
1101
1102 Char_t branchname[15];
1103
1104 AliDetector::SetTreeAddress();
1105
1106 TBranch *branch;
851d3db9 1107 TTree *treeR = gAlice->TreeR();
1108
1109 if (treeR) {
f73816f5 1110 sprintf(branchname,"%scluster",GetName());
851d3db9 1111 if (fRecPoints) {
1112 branch = treeR->GetBranch(branchname);
1113 if (branch) {
1114 branch->SetAddress(&fRecPoints);
1115 }
5c7f4665 1116 }
1117 }
1118
fe4da5cc 1119}
1120
d3f347ff 1121//_____________________________________________________________________________
b060c36f 1122void AliTRD::SetGasMix(Int_t imix)
d3f347ff 1123{
82bbf98a 1124 //
1125 // Defines the gas mixture (imix=0: Xe/Isobutane imix=1: Xe/CO2)
1126 //
1127
d3f347ff 1128 if ((imix < 0) || (imix > 1)) {
1129 printf("Wrong input value: %d\n",imix);
1130 printf("Use standard setting\n");
6244debe 1131 fGasMix = 1;
d3f347ff 1132 return;
1133 }
1134
1135 fGasMix = imix;
1136
1137}
1138
793ff80c 1139//_____________________________________________________________________________
1140void AliTRD::SetPHOShole()
1141{
1142 //
1143 // Selects a geometry with a hole in front of the PHOS
1144 //
1145
1146 fGeometry->SetPHOShole();
1147
1148}
1149
1150//_____________________________________________________________________________
1151void AliTRD::SetRICHhole()
1152{
1153 //
1154 // Selects a geometry with a hole in front of the RICH
1155 //
1156
1157 fGeometry->SetRICHhole();
1158
1159}
1160
dd9a6ee3 1161//_____________________________________________________________________________
1162AliTRD &AliTRD::operator=(const AliTRD &trd)
1163{
1164 //
1165 // Assignment operator
1166 //
1167
1168 if (this != &trd) ((AliTRD &) trd).Copy(*this);
1169 return *this;
1170
f73816f5 1171}
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