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[u/mrichter/AliRoot.git] / TRD / AliTRD.cxx
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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$Log$
851d3db9 18Revision 1.16.2.2 2000/02/28 17:53:24 cblume
19Introduce TRD geometry classes
20
21Revision 1.16.2.1 2000/02/28 17:04:19 cblume
22Include functions and data members for AliTRDrecPoint
23
24Revision 1.16 2000/01/19 17:17:35 fca
25Introducing a list of lists of hits -- more hits allowed for detector now
26
1cedd08a 27Revision 1.15 1999/11/02 17:04:25 fca
28Small syntax change for HP compiler
29
94c641ff 30Revision 1.14 1999/11/02 16:57:02 fca
31Avoid non ansi warnings on HP compilers
32
8459a454 33Revision 1.13 1999/11/02 16:35:56 fca
34New version of TRD introduced
35
5c7f4665 36Revision 1.12 1999/11/01 20:41:51 fca
37Added protections against using the wrong version of FRAME
38
ab76897d 39Revision 1.11 1999/09/29 09:24:34 fca
40Introduction of the Copyright and cvs Log
41
4c039060 42*/
43
fe4da5cc 44///////////////////////////////////////////////////////////////////////////////
45// //
46// Transition Radiation Detector //
47// This class contains the basic functions for the Transition Radiation //
5c7f4665 48// Detector, as well as the geometry. //
49// Functions specific to one particular geometry are contained in the //
50// derived classes. //
fe4da5cc 51// //
52//Begin_Html
53/*
1439f98e 54<img src="picts/AliTRDClass.gif">
fe4da5cc 55*/
56//End_Html
57// //
58// //
59///////////////////////////////////////////////////////////////////////////////
60
5c7f4665 61#include <stdlib.h>
62
fe4da5cc 63#include <TMath.h>
fe4da5cc 64#include <TNode.h>
fe4da5cc 65#include <TPGON.h>
66
fe4da5cc 67#include "AliTRD.h"
68#include "AliRun.h"
d3f347ff 69#include "AliConst.h"
851d3db9 70#include "AliTRDdigitizer.h"
71#include "AliTRDclusterizer.h"
72#include "AliTRDgeometryHole.h"
73#include "AliTRDgeometryFull.h"
74#include "AliTRDrecPoint.h"
fe4da5cc 75
76ClassImp(AliTRD)
77
78//_____________________________________________________________________________
79AliTRD::AliTRD()
80{
81 //
82 // Default constructor
83 //
82bbf98a 84
d3f347ff 85 fIshunt = 0;
86 fGasMix = 0;
99d5402e 87 fHits = 0;
88 fDigits = 0;
5c7f4665 89
851d3db9 90 fRecPoints = 0;
91 fNRecPoints = 0;
5c7f4665 92
851d3db9 93 fGeometry = 0;
82bbf98a 94
fe4da5cc 95}
96
97//_____________________________________________________________________________
98AliTRD::AliTRD(const char *name, const char *title)
99 : AliDetector(name,title)
100{
101 //
102 // Standard constructor for the TRD
103 //
104
5c7f4665 105 // Check that FRAME is there otherwise we have no place where to
106 // put TRD
107 AliModule* FRAME=gAlice->GetModule("FRAME");
108 if (!FRAME) {
109 Error("Ctor","TRD needs FRAME to be present\n");
110 exit(1);
111 }
112
113 // Define the TRD geometry according to the FRAME geometry
851d3db9 114 if (FRAME->IsVersion() == 0) {
115 // Geometry with hole
116 fGeometry = new AliTRDgeometryHole();
117 }
118 else if (FRAME->IsVersion() == 1) {
119 // Geometry without hole
120 fGeometry = new AliTRDgeometryFull();
121 }
122 else {
123 Error("Ctor","Could not find valid FRAME version\n");
124 exit(1);
125 }
5c7f4665 126
fe4da5cc 127 // Allocate the hit array
851d3db9 128 fHits = new TClonesArray("AliTRDhit" , 405);
1cedd08a 129 gAlice->AddHitList(fHits);
99d5402e 130
131 // Allocate the digits array
851d3db9 132 fDigits = 0;
5c7f4665 133
851d3db9 134 // Allocate the rec point array
135 fRecPoints = new TClonesArray("AliTRDrecPoint", 400);
136 fNRecPoints = 0;
99d5402e 137
82bbf98a 138 fIshunt = 0;
139 fGasMix = 0;
140
fe4da5cc 141 SetMarkerColor(kWhite);
82bbf98a 142
fe4da5cc 143}
99d5402e 144
145//_____________________________________________________________________________
146AliTRD::~AliTRD()
147{
148 //
149 // TRD destructor
150 //
151
152 fIshunt = 0;
153
851d3db9 154 delete fGeometry;
99d5402e 155 delete fHits;
851d3db9 156 delete fRecPoints;
5c7f4665 157
158}
159
160//_____________________________________________________________________________
851d3db9 161void AliTRD::AddRecPoint(Float_t *pos, Int_t *digits, Int_t det, Float_t amp)
5c7f4665 162{
163 //
851d3db9 164 // Add a reconstructed point for the TRD
165 //
5c7f4665 166
851d3db9 167 TClonesArray &lRecPoints = *fRecPoints;
168 AliTRDrecPoint *RecPoint = new(lRecPoints[fNRecPoints++]) AliTRDrecPoint();
169 TVector3 posVec(pos[0],pos[1],pos[2]);
170 RecPoint->SetLocalPosition(posVec);
171 RecPoint->SetDetector(det);
172 RecPoint->SetAmplitude(amp);
173 for (Int_t iDigit = 0; iDigit < 3; iDigit++) {
174 RecPoint->AddDigit(digits[iDigit]);
175 }
99d5402e 176
177}
178
179//_____________________________________________________________________________
851d3db9 180void AliTRD::AddDigit(Int_t *digits)
99d5402e 181{
182 //
183 // Add a digit for the TRD
184 //
185
186 TClonesArray &ldigits = *fDigits;
851d3db9 187 new(ldigits[fNdigits++]) AliTRDdigit(digits);
99d5402e 188
189}
190
fe4da5cc 191//_____________________________________________________________________________
851d3db9 192void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits)
fe4da5cc 193{
194 //
195 // Add a hit for the TRD
196 //
82bbf98a 197
fe4da5cc 198 TClonesArray &lhits = *fHits;
851d3db9 199 new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits);
82bbf98a 200
fe4da5cc 201}
202
203//_____________________________________________________________________________
204void AliTRD::BuildGeometry()
205{
206 //
207 // Create the ROOT TNode geometry for the TRD
208 //
82bbf98a 209
fe4da5cc 210 TNode *Node, *Top;
211 TPGON *pgon;
212 const Int_t kColorTRD = 46;
d3f347ff 213
fe4da5cc 214 // Find the top node alice
82bbf98a 215 Top = gAlice->GetGeometry()->GetNode("alice");
d3f347ff 216
82bbf98a 217 pgon = new TPGON("S_TRD","TRD","void",0,360,kNsect,4);
218 Float_t ff = TMath::Cos(kDegrad * 180 / kNsect);
219 Float_t rrmin = kRmin / ff;
220 Float_t rrmax = kRmax / ff;
221 pgon->DefineSection(0,-kZmax1,rrmax,rrmax);
222 pgon->DefineSection(1,-kZmax2,rrmin,rrmax);
223 pgon->DefineSection(2, kZmax2,rrmin,rrmax);
224 pgon->DefineSection(3, kZmax1,rrmax,rrmax);
fe4da5cc 225 Top->cd();
226 Node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
227 Node->SetLineColor(kColorTRD);
228 fNodes->Add(Node);
d3f347ff 229
fe4da5cc 230}
231
232//_____________________________________________________________________________
82bbf98a 233void AliTRD::CreateGeometry()
fe4da5cc 234{
82bbf98a 235 //
236 // Creates the volumes for the TRD chambers
237 //
82bbf98a 238
239 // Check that FRAME is there otherwise we have no place where to put the TRD
240 AliModule* FRAME = gAlice->GetModule("FRAME");
851d3db9 241 if (!FRAME) {
242 printf(" The TRD needs the FRAME to be defined first\n");
243 return;
82bbf98a 244 }
d3f347ff 245
851d3db9 246 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
5c7f4665 247
82bbf98a 248}
249
250//_____________________________________________________________________________
251void AliTRD::CreateMaterials()
252{
fe4da5cc 253 //
254 // Create the materials for the TRD
255 // Origin Y.Foka
256 //
257
fe4da5cc 258 Int_t ISXFLD = gAlice->Field()->Integ();
259 Float_t SXMGMX = gAlice->Field()->Max();
260
d3f347ff 261 // For polyethilene (CH2)
262 Float_t ape[2] = { 12., 1. };
263 Float_t zpe[2] = { 6., 1. };
264 Float_t wpe[2] = { 1., 2. };
265 Float_t dpe = 0.95;
266
267 // For mylar (C5H4O2)
268 Float_t amy[3] = { 12., 1., 16. };
269 Float_t zmy[3] = { 6., 1., 8. };
270 Float_t wmy[3] = { 5., 4., 2. };
fe4da5cc 271 Float_t dmy = 1.39;
d3f347ff 272
273 // For CO2
274 Float_t aco[2] = { 12., 16. };
275 Float_t zco[2] = { 6., 8. };
276 Float_t wco[2] = { 1., 2. };
277 Float_t dco = 0.001977;
278
279 // For water
280 Float_t awa[2] = { 1., 16. };
281 Float_t zwa[2] = { 1., 8. };
282 Float_t wwa[2] = { 2., 1. };
283 Float_t dwa = 1.0;
284
285 // For isobutane (C4H10)
286 Float_t ais[2] = { 12., 1. };
287 Float_t zis[2] = { 6., 1. };
288 Float_t wis[2] = { 4., 10. };
289 Float_t dis = 0.00267;
290
291 // For Xe/CO2-gas-mixture
292 // Xe-content of the Xe/CO2-mixture (90% / 10%)
293 Float_t fxc = .90;
294 // Xe-content of the Xe/Isobutane-mixture (97% / 3%)
295 Float_t fxi = .97;
fe4da5cc 296 Float_t dxe = .005858;
297
d3f347ff 298 // General tracking parameter
fe4da5cc 299 Float_t tmaxfd = -10.;
300 Float_t stemax = -1e10;
d3f347ff 301 Float_t deemax = -0.1;
302 Float_t epsil = 1e-4;
303 Float_t stmin = -0.001;
fe4da5cc 304
305 Float_t absl, radl, d, buf[1];
306 Float_t agm[2], dgm, zgm[2], wgm[2];
d3f347ff 307 Int_t nbuf;
fe4da5cc 308
d3f347ff 309 //////////////////////////////////////////////////////////////////////////
fe4da5cc 310 // Define Materials
d3f347ff 311 //////////////////////////////////////////////////////////////////////////
312
313 AliMaterial( 1, "Al $", 26.98, 13.0, 2.7 , 8.9 , 37.2);
314 AliMaterial( 2, "Air$", 14.61, 7.3, 0.001205, 30420.0 , 67500.0);
315 AliMaterial( 4, "Xe $", 131.29, 54.0, dxe , 1447.59, 0.0);
316 AliMaterial( 5, "Cu $", 63.54, 29.0, 8.96 , 1.43, 14.8);
317 AliMaterial( 6, "C $", 12.01, 6.0, 2.265 , 18.8 , 74.4);
318 AliMaterial(12, "G10$", 20.00, 10.0, 1.7 , 19.4 , 999.0);
319
320 // Mixtures
321 AliMixture(3, "Polyethilene$", ape, zpe, dpe, -2, wpe);
322 AliMixture(7, "Mylar$", amy, zmy, dmy, -3, wmy);
323 AliMixture(8, "CO2$", aco, zco, dco, -2, wco);
324 AliMixture(9, "Isobutane$", ais, zis, dis, -2, wis);
82bbf98a 325 AliMixture(13,"Water$", awa, zwa, dwa, -2, wwa);
d3f347ff 326
327 // Gas mixtures
82bbf98a 328 Char_t namate[21];
d3f347ff 329 // Xe/CO2-mixture
330 // Get properties of Xe
cfce8870 331 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
d3f347ff 332 // Get properties of CO2
cfce8870 333 gMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
d3f347ff 334 // Create gas mixture
335 wgm[0] = fxc;
336 wgm[1] = 1. - fxc;
fe4da5cc 337 dgm = wgm[0] * dxe + wgm[1] * dco;
d3f347ff 338 AliMixture(10, "Gas mixture 1$", agm, zgm, dgm, 2, wgm);
339 // Xe/Isobutane-mixture
340 // Get properties of Xe
cfce8870 341 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
d3f347ff 342 // Get properties of Isobutane
cfce8870 343 gMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
d3f347ff 344 // Create gas mixture
345 wgm[0] = fxi;
346 wgm[1] = 1. - fxi;
347 dgm = wgm[0] * dxe + wgm[1] * dis;
348 AliMixture(11, "Gas mixture 2$", agm, zgm, dgm, 2, wgm);
349
350 //////////////////////////////////////////////////////////////////////////
fe4da5cc 351 // Tracking Media Parameters
d3f347ff 352 //////////////////////////////////////////////////////////////////////////
353
354 // Al Frame
ad51aeb0 355 AliMedium(1, "Al Frame$", 1, 0, ISXFLD, SXMGMX
d3f347ff 356 , tmaxfd, stemax, deemax, epsil, stmin);
357 // Air
ad51aeb0 358 AliMedium(2, "Air$", 2, 0, ISXFLD, SXMGMX
d3f347ff 359 , tmaxfd, stemax, deemax, epsil, stmin);
360 // Polyethilene
ad51aeb0 361 AliMedium(3, "Radiator$", 3, 0, ISXFLD, SXMGMX
d3f347ff 362 , tmaxfd, stemax, deemax, epsil, stmin);
363 // Xe
ad51aeb0 364 AliMedium(4, "Xe$", 4, 1, ISXFLD, SXMGMX
d3f347ff 365 , tmaxfd, stemax, deemax, epsil, stmin);
366 // Cu pads
ad51aeb0 367 AliMedium(5, "Padplane$", 5, 1, ISXFLD, SXMGMX
d3f347ff 368 , tmaxfd, stemax, deemax, epsil, stmin);
369 // Fee + cables
ad51aeb0 370 AliMedium(6, "Readout$", 1, 0, ISXFLD, SXMGMX
d3f347ff 371 , tmaxfd, stemax, deemax, epsil, stmin);
372 // C frame
ad51aeb0 373 AliMedium(7, "C Frame$", 6, 0, ISXFLD, SXMGMX
d3f347ff 374 , tmaxfd, stemax, deemax, epsil, stmin);
375 // Mylar foils
ad51aeb0 376 AliMedium(8, "Mylar$", 7, 0, ISXFLD, SXMGMX
d3f347ff 377 , tmaxfd, stemax, deemax, epsil, stmin);
378 if (fGasMix == 1) {
379 // Gas-mixture (Xe/CO2)
ad51aeb0 380 AliMedium(9, "Gas-mix$", 10, 1, ISXFLD, SXMGMX
d3f347ff 381 , tmaxfd, stemax, deemax, epsil, stmin);
382 }
383 else {
384 // Gas-mixture (Xe/Isobutane)
ad51aeb0 385 AliMedium(9, "Gas-mix$", 11, 1, ISXFLD, SXMGMX
d3f347ff 386 , tmaxfd, stemax, deemax, epsil, stmin);
387 }
388 // Nomex-honeycomb (use carbon for the time being)
ad51aeb0 389 AliMedium(10, "Nomex$", 6, 0, ISXFLD, SXMGMX
d3f347ff 390 , tmaxfd, stemax, deemax, epsil, stmin);
391 // Kapton foils (use Mylar for the time being)
ad51aeb0 392 AliMedium(11, "Kapton$", 7, 0, ISXFLD, SXMGMX
d3f347ff 393 , tmaxfd, stemax, deemax, epsil, stmin);
394 // Gas-filling of the radiator
ad51aeb0 395 AliMedium(12, "CO2$", 8, 0, ISXFLD, SXMGMX
d3f347ff 396 , tmaxfd, stemax, deemax, epsil, stmin);
397 // G10-plates
ad51aeb0 398 AliMedium(13, "G10-plates$",12, 0, ISXFLD, SXMGMX
d3f347ff 399 , tmaxfd, stemax, deemax, epsil, stmin);
400 // Cooling water
ad51aeb0 401 AliMedium(14, "Water$", 13, 0, ISXFLD, SXMGMX
d3f347ff 402 , tmaxfd, stemax, deemax, epsil, stmin);
403
fe4da5cc 404}
405
406//_____________________________________________________________________________
82bbf98a 407void AliTRD::DrawModule()
408{
409 //
410 // Draw a shaded view of the Transition Radiation Detector version 0
411 //
412
413 // Set everything unseen
414 gMC->Gsatt("*" ,"SEEN",-1);
415
416 // Set ALIC mother transparent
417 gMC->Gsatt("ALIC","SEEN", 0);
418
419 // Set the volumes visible
851d3db9 420 if (fGeometry->IsVersion() == 0) {
5c7f4665 421 gMC->Gsatt("B071","SEEN", 0);
422 gMC->Gsatt("B074","SEEN", 0);
423 gMC->Gsatt("B075","SEEN", 0);
424 gMC->Gsatt("B077","SEEN", 0);
425 gMC->Gsatt("BTR1","SEEN", 0);
426 gMC->Gsatt("BTR2","SEEN", 0);
427 gMC->Gsatt("BTR3","SEEN", 0);
428 gMC->Gsatt("TRD1","SEEN", 0);
429 gMC->Gsatt("TRD2","SEEN", 0);
430 gMC->Gsatt("TRD3","SEEN", 0);
431 }
432 else {
433 gMC->Gsatt("B071","SEEN", 0);
434 gMC->Gsatt("B074","SEEN", 0);
435 gMC->Gsatt("B075","SEEN", 0);
436 gMC->Gsatt("B077","SEEN", 0);
437 gMC->Gsatt("BTR1","SEEN", 0);
438 gMC->Gsatt("BTR2","SEEN", 0);
439 gMC->Gsatt("BTR3","SEEN", 0);
440 gMC->Gsatt("TRD1","SEEN", 0);
441 }
82bbf98a 442 gMC->Gsatt("UCII","SEEN", 0);
443 gMC->Gsatt("UCIM","SEEN", 0);
444 gMC->Gsatt("UCIO","SEEN", 0);
445 gMC->Gsatt("UL02","SEEN", 1);
446 gMC->Gsatt("UL05","SEEN", 1);
447 gMC->Gsatt("UL06","SEEN", 1);
448
449 gMC->Gdopt("hide", "on");
450 gMC->Gdopt("shad", "on");
451 gMC->Gsatt("*", "fill", 7);
452 gMC->SetClipBox(".");
453 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
454 gMC->DefaultRange();
455 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
456 gMC->Gdhead(1111, "Transition Radiation Detector");
457 gMC->Gdman(18, 4, "MAN");
458
459}
460
461//_____________________________________________________________________________
fe4da5cc 462Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
463{
464 //
465 // Distance between the mouse and the TRD detector on the screen
466 // Dummy routine
82bbf98a 467
468 return 9999;
469
fe4da5cc 470}
471
472//_____________________________________________________________________________
473void AliTRD::Init()
474{
475 //
851d3db9 476 // Initialize the TRD detector after the geometry has been created
fe4da5cc 477 //
82bbf98a 478
5c7f4665 479 Int_t i;
851d3db9 480
5c7f4665 481 printf("\n");
851d3db9 482 for (i = 0; i < 35; i++) printf("*");
5c7f4665 483 printf(" TRD_INIT ");
851d3db9 484 for (i = 0; i < 35; i++) printf("*");
485 printf("\n");
5c7f4665 486 printf("\n");
5c7f4665 487
851d3db9 488 if (fGeometry->IsVersion() == 0) {
489 printf(" Geometry with holes initialized.\n\n");
490 }
491 else if (fGeometry->IsVersion() == 1) {
492 printf(" Geometry without holes initialized.\n\n");
5c7f4665 493 }
494
851d3db9 495 if (fGasMix == 1)
496 printf(" Gas Mixture: 90%% Xe + 10%% CO2\n\n");
497 else
498 printf(" Gas Mixture: 97%% Xe + 3%% Isobutane\n\n");
5c7f4665 499
500}
501
502//_____________________________________________________________________________
503void AliTRD::MakeBranch(Option_t* option)
504{
505 //
506 // Create Tree branches for the TRD digits and cluster.
507 //
508
509 Int_t buffersize = 4000;
510 Char_t branchname[15];
511
512 AliDetector::MakeBranch(option);
513
851d3db9 514 //Char_t *D = strstr(option,"D");
515 //sprintf(branchname,"%s",GetName());
516 //if (fDigits && gAlice->TreeD() && D) {
517 // gAlice->TreeD()->Branch(branchname,&fDigits, buffersize);
518 // printf("* AliTRD::MakeBranch * Making Branch %s for digits in TreeD\n",branchname);
519 //}
520
521 Char_t *R = strstr(option,"R");
522 sprintf(branchname,"%srecPoints",GetName());
523 if (fRecPoints && gAlice->TreeR() && R) {
524 gAlice->TreeR()->Branch(branchname,&fRecPoints,buffersize);
525 printf("* AliTRD::MakeBranch * Making Branch %s for points in TreeR\n",branchname);
5c7f4665 526 }
527
851d3db9 528}
529
530//_____________________________________________________________________________
531void AliTRD::ResetRecPoints()
532{
533 //
534 // Reset number of reconstructed points and the point array
535 //
536
537 fNRecPoints = 0;
538 if (fRecPoints) fRecPoints->Clear();
5c7f4665 539
540}
541
542//_____________________________________________________________________________
543void AliTRD::SetTreeAddress()
544{
545 //
546 // Set the branch addresses for the trees.
547 //
548
549 Char_t branchname[15];
550
551 AliDetector::SetTreeAddress();
552
553 TBranch *branch;
851d3db9 554 TTree *treeR = gAlice->TreeR();
555
556 if (treeR) {
557 sprintf(branchname,"%srecPoints",GetName());
558 if (fRecPoints) {
559 branch = treeR->GetBranch(branchname);
560 if (branch) {
561 branch->SetAddress(&fRecPoints);
562 }
5c7f4665 563 }
564 }
565
fe4da5cc 566}
567
d3f347ff 568//_____________________________________________________________________________
b060c36f 569void AliTRD::SetGasMix(Int_t imix)
d3f347ff 570{
82bbf98a 571 //
572 // Defines the gas mixture (imix=0: Xe/Isobutane imix=1: Xe/CO2)
573 //
574
d3f347ff 575 if ((imix < 0) || (imix > 1)) {
576 printf("Wrong input value: %d\n",imix);
577 printf("Use standard setting\n");
578 fGasMix = 0;
579 return;
580 }
581
582 fGasMix = imix;
583
584}
585
5c7f4665 586//______________________________________________________________________________
587void AliTRD::Streamer(TBuffer &R__b)
588{
851d3db9 589 //
590 // Stream an object of class AliTRD.
591 //
592
593 if (R__b.IsReading()) {
594 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
595 AliDetector::Streamer(R__b);
596 R__b >> fGasMix;
597 R__b >> fGeometry;
598 // Stream the pointers but not the TClonesArray
599 R__b >> fRecPoints; // diff
600 }
601 else {
602 R__b.WriteVersion(AliTRD::IsA());
603 AliDetector::Streamer(R__b);
604 R__b << fGasMix;
605 R__b << fGeometry;
606 // Stream the pointers but not the TClonesArrays
607 R__b << fRecPoints; // diff
608 }
5c7f4665 609
610}
611
fe4da5cc 612ClassImp(AliTRDhit)
613
614//_____________________________________________________________________________
851d3db9 615AliTRDhit::AliTRDhit(Int_t shunt, Int_t track, Int_t det, Float_t *hits)
5c7f4665 616 :AliHit(shunt, track)
fe4da5cc 617{
618 //
619 // Create a TRD hit
620 //
621
fe4da5cc 622 // Store volume hierarchy
851d3db9 623 fDetector = det;
82bbf98a 624
851d3db9 625 // Store position and charge
626 fX = hits[0];
627 fY = hits[1];
628 fZ = hits[2];
629 fQ = hits[3];
5c7f4665 630
631}
632