1 /**************************************************************************
2 * Copyright(c) 1998-1999, 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 **************************************************************************/
18 Revision 1.18 2000/05/08 16:17:27 cblume
21 Revision 1.17.2.1 2000/05/08 14:28:59 cblume
22 Introduced SetPHOShole() and SetRICHhole(). AliTRDrecPoint container is now a TObjArray
24 Revision 1.17 2000/02/28 19:10:26 cblume
25 Include the new TRD classes
27 Revision 1.16.2.2 2000/02/28 17:53:24 cblume
28 Introduce TRD geometry classes
30 Revision 1.16.2.1 2000/02/28 17:04:19 cblume
31 Include functions and data members for AliTRDrecPoint
33 Revision 1.16 2000/01/19 17:17:35 fca
34 Introducing a list of lists of hits -- more hits allowed for detector now
36 Revision 1.15 1999/11/02 17:04:25 fca
37 Small syntax change for HP compiler
39 Revision 1.14 1999/11/02 16:57:02 fca
40 Avoid non ansi warnings on HP compilers
42 Revision 1.13 1999/11/02 16:35:56 fca
43 New version of TRD introduced
45 Revision 1.12 1999/11/01 20:41:51 fca
46 Added protections against using the wrong version of FRAME
48 Revision 1.11 1999/09/29 09:24:34 fca
49 Introduction of the Copyright and cvs Log
53 ///////////////////////////////////////////////////////////////////////////////
55 // Transition Radiation Detector //
56 // This class contains the basic functions for the Transition Radiation //
59 ///////////////////////////////////////////////////////////////////////////////
70 #include "AliTRDdigitizer.h"
71 #include "AliTRDclusterizer.h"
72 #include "AliTRDgeometryHole.h"
73 #include "AliTRDgeometryFull.h"
74 #include "AliTRDrecPoint.h"
78 //_____________________________________________________________________________
82 // Default constructor
97 //_____________________________________________________________________________
98 AliTRD::AliTRD(const char *name, const char *title)
99 : AliDetector(name,title)
102 // Standard constructor for the TRD
105 // Check that FRAME is there otherwise we have no place where to
107 AliModule* FRAME=gAlice->GetModule("FRAME");
109 Error("Ctor","TRD needs FRAME to be present\n");
113 // Define the TRD geometry according to the FRAME geometry
114 if (FRAME->IsVersion() == 0) {
115 // Geometry with hole
116 fGeometry = new AliTRDgeometryHole();
118 else if (FRAME->IsVersion() == 1) {
119 // Geometry without hole
120 fGeometry = new AliTRDgeometryFull();
123 Error("Ctor","Could not find valid FRAME version\n");
127 // Allocate the hit array
128 fHits = new TClonesArray("AliTRDhit" ,405);
129 gAlice->AddHitList(fHits);
131 // Allocate the digits array
134 // Allocate the rec point array
135 fRecPoints = new TObjArray(400);
141 SetMarkerColor(kWhite);
145 //_____________________________________________________________________________
160 //_____________________________________________________________________________
161 void AliTRD::AddRecPoint(Float_t *pos, Int_t *digits, Int_t det, Float_t amp)
164 // Add a reconstructed point for the TRD
167 AliTRDrecPoint *RecPoint = new AliTRDrecPoint();
168 TVector3 posVec(pos[0],pos[1],pos[2]);
169 RecPoint->SetLocalPosition(posVec);
170 RecPoint->SetDetector(det);
171 RecPoint->SetEnergy(amp);
172 for (Int_t iDigit = 0; iDigit < 3; iDigit++) {
173 RecPoint->AddDigit(digits[iDigit]);
176 fRecPoints->Add(RecPoint);
180 //_____________________________________________________________________________
181 void AliTRD::AddDigit(Int_t *digits, Int_t *amp)
184 // Add a digit for the TRD
187 TClonesArray &ldigits = *fDigits;
188 new(ldigits[fNdigits++]) AliTRDdigit(kFALSE,digits,amp);
192 //_____________________________________________________________________________
193 void AliTRD::AddHit(Int_t track, Int_t* det, Float_t *hits)
196 // Add a hit for the TRD
199 TClonesArray &lhits = *fHits;
200 new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits);
204 //_____________________________________________________________________________
205 void AliTRD::BuildGeometry()
208 // Create the ROOT TNode geometry for the TRD
213 const Int_t kColorTRD = 46;
215 // Find the top node alice
216 Top = gAlice->GetGeometry()->GetNode("alice");
218 pgon = new TPGON("S_TRD","TRD","void",0,360,kNsect,4);
219 Float_t ff = TMath::Cos(kDegrad * 180 / kNsect);
220 Float_t rrmin = kRmin / ff;
221 Float_t rrmax = kRmax / ff;
222 pgon->DefineSection(0,-kZmax1,rrmax,rrmax);
223 pgon->DefineSection(1,-kZmax2,rrmin,rrmax);
224 pgon->DefineSection(2, kZmax2,rrmin,rrmax);
225 pgon->DefineSection(3, kZmax1,rrmax,rrmax);
227 Node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
228 Node->SetLineColor(kColorTRD);
233 //_____________________________________________________________________________
234 void AliTRD::CreateGeometry()
237 // Creates the volumes for the TRD chambers
240 // Check that FRAME is there otherwise we have no place where to put the TRD
241 AliModule* FRAME = gAlice->GetModule("FRAME");
243 printf(" The TRD needs the FRAME to be defined first\n");
247 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
251 //_____________________________________________________________________________
252 void AliTRD::CreateMaterials()
255 // Create the materials for the TRD
259 Int_t ISXFLD = gAlice->Field()->Integ();
260 Float_t SXMGMX = gAlice->Field()->Max();
262 // For polyethilene (CH2)
263 Float_t ape[2] = { 12., 1. };
264 Float_t zpe[2] = { 6., 1. };
265 Float_t wpe[2] = { 1., 2. };
268 // For mylar (C5H4O2)
269 Float_t amy[3] = { 12., 1., 16. };
270 Float_t zmy[3] = { 6., 1., 8. };
271 Float_t wmy[3] = { 5., 4., 2. };
275 Float_t aco[2] = { 12., 16. };
276 Float_t zco[2] = { 6., 8. };
277 Float_t wco[2] = { 1., 2. };
278 Float_t dco = 0.001977;
281 Float_t awa[2] = { 1., 16. };
282 Float_t zwa[2] = { 1., 8. };
283 Float_t wwa[2] = { 2., 1. };
286 // For isobutane (C4H10)
287 Float_t ais[2] = { 12., 1. };
288 Float_t zis[2] = { 6., 1. };
289 Float_t wis[2] = { 4., 10. };
290 Float_t dis = 0.00267;
292 // For Xe/CO2-gas-mixture
293 // Xe-content of the Xe/CO2-mixture (90% / 10%)
295 // Xe-content of the Xe/Isobutane-mixture (97% / 3%)
297 Float_t dxe = .005858;
299 // General tracking parameter
300 Float_t tmaxfd = -10.;
301 Float_t stemax = -1e10;
302 Float_t deemax = -0.1;
303 Float_t epsil = 1e-4;
304 Float_t stmin = -0.001;
306 Float_t absl, radl, d, buf[1];
307 Float_t agm[2], dgm, zgm[2], wgm[2];
310 //////////////////////////////////////////////////////////////////////////
312 //////////////////////////////////////////////////////////////////////////
314 AliMaterial( 1, "Al $", 26.98, 13.0, 2.7 , 8.9 , 37.2);
315 AliMaterial( 2, "Air$", 14.61, 7.3, 0.001205, 30420.0 , 67500.0);
316 AliMaterial( 4, "Xe $", 131.29, 54.0, dxe , 1447.59, 0.0);
317 AliMaterial( 5, "Cu $", 63.54, 29.0, 8.96 , 1.43, 14.8);
318 AliMaterial( 6, "C $", 12.01, 6.0, 2.265 , 18.8 , 74.4);
319 AliMaterial(12, "G10$", 20.00, 10.0, 1.7 , 19.4 , 999.0);
322 AliMixture(3, "Polyethilene$", ape, zpe, dpe, -2, wpe);
323 AliMixture(7, "Mylar$", amy, zmy, dmy, -3, wmy);
324 AliMixture(8, "CO2$", aco, zco, dco, -2, wco);
325 AliMixture(9, "Isobutane$", ais, zis, dis, -2, wis);
326 AliMixture(13,"Water$", awa, zwa, dwa, -2, wwa);
331 // Get properties of Xe
332 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
333 // Get properties of CO2
334 gMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
335 // Create gas mixture
338 dgm = wgm[0] * dxe + wgm[1] * dco;
339 AliMixture(10, "Gas mixture 1$", agm, zgm, dgm, 2, wgm);
340 // Xe/Isobutane-mixture
341 // Get properties of Xe
342 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
343 // Get properties of Isobutane
344 gMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
345 // Create gas mixture
348 dgm = wgm[0] * dxe + wgm[1] * dis;
349 AliMixture(11, "Gas mixture 2$", agm, zgm, dgm, 2, wgm);
351 //////////////////////////////////////////////////////////////////////////
352 // Tracking Media Parameters
353 //////////////////////////////////////////////////////////////////////////
356 AliMedium(1, "Al Frame$", 1, 0, ISXFLD, SXMGMX
357 , tmaxfd, stemax, deemax, epsil, stmin);
359 AliMedium(2, "Air$", 2, 0, ISXFLD, SXMGMX
360 , tmaxfd, stemax, deemax, epsil, stmin);
362 AliMedium(3, "Radiator$", 3, 0, ISXFLD, SXMGMX
363 , tmaxfd, stemax, deemax, epsil, stmin);
365 AliMedium(4, "Xe$", 4, 1, ISXFLD, SXMGMX
366 , tmaxfd, stemax, deemax, epsil, stmin);
368 AliMedium(5, "Padplane$", 5, 1, ISXFLD, SXMGMX
369 , tmaxfd, stemax, deemax, epsil, stmin);
371 AliMedium(6, "Readout$", 1, 0, ISXFLD, SXMGMX
372 , tmaxfd, stemax, deemax, epsil, stmin);
374 AliMedium(7, "C Frame$", 6, 0, ISXFLD, SXMGMX
375 , tmaxfd, stemax, deemax, epsil, stmin);
377 AliMedium(8, "Mylar$", 7, 0, ISXFLD, SXMGMX
378 , tmaxfd, stemax, deemax, epsil, stmin);
380 // Gas-mixture (Xe/CO2)
381 AliMedium(9, "Gas-mix$", 10, 1, ISXFLD, SXMGMX
382 , tmaxfd, stemax, deemax, epsil, stmin);
385 // Gas-mixture (Xe/Isobutane)
386 AliMedium(9, "Gas-mix$", 11, 1, ISXFLD, SXMGMX
387 , tmaxfd, stemax, deemax, epsil, stmin);
389 // Nomex-honeycomb (use carbon for the time being)
390 AliMedium(10, "Nomex$", 6, 0, ISXFLD, SXMGMX
391 , tmaxfd, stemax, deemax, epsil, stmin);
392 // Kapton foils (use Mylar for the time being)
393 AliMedium(11, "Kapton$", 7, 0, ISXFLD, SXMGMX
394 , tmaxfd, stemax, deemax, epsil, stmin);
395 // Gas-filling of the radiator
396 AliMedium(12, "CO2$", 8, 0, ISXFLD, SXMGMX
397 , tmaxfd, stemax, deemax, epsil, stmin);
399 AliMedium(13, "G10-plates$",12, 0, ISXFLD, SXMGMX
400 , tmaxfd, stemax, deemax, epsil, stmin);
402 AliMedium(14, "Water$", 13, 0, ISXFLD, SXMGMX
403 , tmaxfd, stemax, deemax, epsil, stmin);
407 //_____________________________________________________________________________
408 void AliTRD::DrawModule()
411 // Draw a shaded view of the Transition Radiation Detector version 0
414 // Set everything unseen
415 gMC->Gsatt("*" ,"SEEN",-1);
417 // Set ALIC mother transparent
418 gMC->Gsatt("ALIC","SEEN", 0);
420 // Set the volumes visible
421 if (fGeometry->IsVersion() == 0) {
422 gMC->Gsatt("B071","SEEN", 0);
423 gMC->Gsatt("B074","SEEN", 0);
424 gMC->Gsatt("B075","SEEN", 0);
425 gMC->Gsatt("B077","SEEN", 0);
426 gMC->Gsatt("BTR1","SEEN", 0);
427 gMC->Gsatt("BTR2","SEEN", 0);
428 gMC->Gsatt("BTR3","SEEN", 0);
429 gMC->Gsatt("TRD1","SEEN", 0);
430 gMC->Gsatt("TRD2","SEEN", 0);
431 gMC->Gsatt("TRD3","SEEN", 0);
434 gMC->Gsatt("B071","SEEN", 0);
435 gMC->Gsatt("B074","SEEN", 0);
436 gMC->Gsatt("B075","SEEN", 0);
437 gMC->Gsatt("B077","SEEN", 0);
438 gMC->Gsatt("BTR1","SEEN", 0);
439 gMC->Gsatt("BTR2","SEEN", 0);
440 gMC->Gsatt("BTR3","SEEN", 0);
441 gMC->Gsatt("TRD1","SEEN", 0);
442 if (fGeometry->GetPHOShole())
443 gMC->Gsatt("TRD2","SEEN", 0);
444 if (fGeometry->GetRICHhole())
445 gMC->Gsatt("TRD3","SEEN", 0);
447 gMC->Gsatt("UCII","SEEN", 0);
448 gMC->Gsatt("UCIM","SEEN", 0);
449 gMC->Gsatt("UCIO","SEEN", 0);
450 gMC->Gsatt("UL02","SEEN", 1);
451 gMC->Gsatt("UL05","SEEN", 1);
452 gMC->Gsatt("UL06","SEEN", 1);
454 gMC->Gdopt("hide", "on");
455 gMC->Gdopt("shad", "on");
456 gMC->Gsatt("*", "fill", 7);
457 gMC->SetClipBox(".");
458 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
460 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
461 gMC->Gdhead(1111, "Transition Radiation Detector");
462 gMC->Gdman(18, 4, "MAN");
466 //_____________________________________________________________________________
467 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
470 // Distance between the mouse and the TRD detector on the screen
477 //_____________________________________________________________________________
481 // Initialize the TRD detector after the geometry has been created
487 for (i = 0; i < 35; i++) printf("*");
488 printf(" TRD_INIT ");
489 for (i = 0; i < 35; i++) printf("*");
493 if (fGeometry->IsVersion() == 0) {
494 printf(" Geometry for spaceframe with holes initialized.\n\n");
496 else if (fGeometry->IsVersion() == 1) {
497 printf(" Geometry for spaceframe without holes initialized.\n");
498 if (fGeometry->GetPHOShole())
499 printf(" Leave space in front of PHOS free.\n");
500 if (fGeometry->GetRICHhole())
501 printf(" Leave space in front of RICH free.\n");
506 printf(" Gas Mixture: 90%% Xe + 10%% CO2\n\n");
508 printf(" Gas Mixture: 97%% Xe + 3%% Isobutane\n\n");
512 //_____________________________________________________________________________
513 void AliTRD::MakeBranch(Option_t* option)
516 // Create Tree branches for the TRD digits and cluster.
519 Int_t buffersize = 4000;
520 Char_t branchname[15];
522 AliDetector::MakeBranch(option);
524 Char_t *R = strstr(option,"R");
525 sprintf(branchname,"%srecPoints",GetName());
526 if (fRecPoints && gAlice->TreeR() && R) {
527 gAlice->TreeR()->Branch(branchname,fRecPoints->IsA()->GetName()
528 ,&fRecPoints,buffersize,0);
529 printf("* AliTRD::MakeBranch * Making Branch %s for points in TreeR\n",branchname);
534 //_____________________________________________________________________________
535 void AliTRD::ResetRecPoints()
538 // Reset number of reconstructed points and the point array
542 if (fRecPoints) fRecPoints->Delete();
546 //_____________________________________________________________________________
547 void AliTRD::SetTreeAddress()
550 // Set the branch addresses for the trees.
553 Char_t branchname[15];
555 AliDetector::SetTreeAddress();
558 TTree *treeR = gAlice->TreeR();
561 sprintf(branchname,"%srecPoints",GetName());
563 branch = treeR->GetBranch(branchname);
565 branch->SetAddress(&fRecPoints);
572 //_____________________________________________________________________________
573 void AliTRD::SetGasMix(Int_t imix)
576 // Defines the gas mixture (imix=0: Xe/Isobutane imix=1: Xe/CO2)
579 if ((imix < 0) || (imix > 1)) {
580 printf("Wrong input value: %d\n",imix);
581 printf("Use standard setting\n");