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 1.17.2.1 2000/05/08 14:28:59 cblume
19 Introduced SetPHOShole() and SetRICHhole(). AliTRDrecPoint container is now a TObjArray
21 Revision 1.17 2000/02/28 19:10:26 cblume
22 Include the new TRD classes
24 Revision 1.16.2.2 2000/02/28 17:53:24 cblume
25 Introduce TRD geometry classes
27 Revision 1.16.2.1 2000/02/28 17:04:19 cblume
28 Include functions and data members for AliTRDrecPoint
30 Revision 1.16 2000/01/19 17:17:35 fca
31 Introducing a list of lists of hits -- more hits allowed for detector now
33 Revision 1.15 1999/11/02 17:04:25 fca
34 Small syntax change for HP compiler
36 Revision 1.14 1999/11/02 16:57:02 fca
37 Avoid non ansi warnings on HP compilers
39 Revision 1.13 1999/11/02 16:35:56 fca
40 New version of TRD introduced
42 Revision 1.12 1999/11/01 20:41:51 fca
43 Added protections against using the wrong version of FRAME
45 Revision 1.11 1999/09/29 09:24:34 fca
46 Introduction of the Copyright and cvs Log
50 ///////////////////////////////////////////////////////////////////////////////
52 // Transition Radiation Detector //
53 // This class contains the basic functions for the Transition Radiation //
56 ///////////////////////////////////////////////////////////////////////////////
67 #include "AliTRDdigitizer.h"
68 #include "AliTRDclusterizer.h"
69 #include "AliTRDgeometryHole.h"
70 #include "AliTRDgeometryFull.h"
71 #include "AliTRDrecPoint.h"
75 //_____________________________________________________________________________
79 // Default constructor
94 //_____________________________________________________________________________
95 AliTRD::AliTRD(const char *name, const char *title)
96 : AliDetector(name,title)
99 // Standard constructor for the TRD
102 // Check that FRAME is there otherwise we have no place where to
104 AliModule* FRAME=gAlice->GetModule("FRAME");
106 Error("Ctor","TRD needs FRAME to be present\n");
110 // Define the TRD geometry according to the FRAME geometry
111 if (FRAME->IsVersion() == 0) {
112 // Geometry with hole
113 fGeometry = new AliTRDgeometryHole();
115 else if (FRAME->IsVersion() == 1) {
116 // Geometry without hole
117 fGeometry = new AliTRDgeometryFull();
120 Error("Ctor","Could not find valid FRAME version\n");
124 // Allocate the hit array
125 fHits = new TClonesArray("AliTRDhit" ,405);
126 gAlice->AddHitList(fHits);
128 // Allocate the digits array
131 // Allocate the rec point array
132 fRecPoints = new TObjArray(400);
138 SetMarkerColor(kWhite);
142 //_____________________________________________________________________________
157 //_____________________________________________________________________________
158 void AliTRD::AddRecPoint(Float_t *pos, Int_t *digits, Int_t det, Float_t amp)
161 // Add a reconstructed point for the TRD
164 AliTRDrecPoint *RecPoint = new AliTRDrecPoint();
165 TVector3 posVec(pos[0],pos[1],pos[2]);
166 RecPoint->SetLocalPosition(posVec);
167 RecPoint->SetDetector(det);
168 RecPoint->SetEnergy(amp);
169 for (Int_t iDigit = 0; iDigit < 3; iDigit++) {
170 RecPoint->AddDigit(digits[iDigit]);
173 fRecPoints->Add(RecPoint);
177 //_____________________________________________________________________________
178 void AliTRD::AddDigit(Int_t *digits)
181 // Add a digit for the TRD
184 TClonesArray &ldigits = *fDigits;
185 new(ldigits[fNdigits++]) AliTRDdigit(kFALSE,digits);
189 //_____________________________________________________________________________
190 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits)
193 // Add a hit for the TRD
196 TClonesArray &lhits = *fHits;
197 new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits);
201 //_____________________________________________________________________________
202 void AliTRD::BuildGeometry()
205 // Create the ROOT TNode geometry for the TRD
210 const Int_t kColorTRD = 46;
212 // Find the top node alice
213 Top = gAlice->GetGeometry()->GetNode("alice");
215 pgon = new TPGON("S_TRD","TRD","void",0,360,kNsect,4);
216 Float_t ff = TMath::Cos(kDegrad * 180 / kNsect);
217 Float_t rrmin = kRmin / ff;
218 Float_t rrmax = kRmax / ff;
219 pgon->DefineSection(0,-kZmax1,rrmax,rrmax);
220 pgon->DefineSection(1,-kZmax2,rrmin,rrmax);
221 pgon->DefineSection(2, kZmax2,rrmin,rrmax);
222 pgon->DefineSection(3, kZmax1,rrmax,rrmax);
224 Node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
225 Node->SetLineColor(kColorTRD);
230 //_____________________________________________________________________________
231 void AliTRD::CreateGeometry()
234 // Creates the volumes for the TRD chambers
237 // Check that FRAME is there otherwise we have no place where to put the TRD
238 AliModule* FRAME = gAlice->GetModule("FRAME");
240 printf(" The TRD needs the FRAME to be defined first\n");
244 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
248 //_____________________________________________________________________________
249 void AliTRD::CreateMaterials()
252 // Create the materials for the TRD
256 Int_t ISXFLD = gAlice->Field()->Integ();
257 Float_t SXMGMX = gAlice->Field()->Max();
259 // For polyethilene (CH2)
260 Float_t ape[2] = { 12., 1. };
261 Float_t zpe[2] = { 6., 1. };
262 Float_t wpe[2] = { 1., 2. };
265 // For mylar (C5H4O2)
266 Float_t amy[3] = { 12., 1., 16. };
267 Float_t zmy[3] = { 6., 1., 8. };
268 Float_t wmy[3] = { 5., 4., 2. };
272 Float_t aco[2] = { 12., 16. };
273 Float_t zco[2] = { 6., 8. };
274 Float_t wco[2] = { 1., 2. };
275 Float_t dco = 0.001977;
278 Float_t awa[2] = { 1., 16. };
279 Float_t zwa[2] = { 1., 8. };
280 Float_t wwa[2] = { 2., 1. };
283 // For isobutane (C4H10)
284 Float_t ais[2] = { 12., 1. };
285 Float_t zis[2] = { 6., 1. };
286 Float_t wis[2] = { 4., 10. };
287 Float_t dis = 0.00267;
289 // For Xe/CO2-gas-mixture
290 // Xe-content of the Xe/CO2-mixture (90% / 10%)
292 // Xe-content of the Xe/Isobutane-mixture (97% / 3%)
294 Float_t dxe = .005858;
296 // General tracking parameter
297 Float_t tmaxfd = -10.;
298 Float_t stemax = -1e10;
299 Float_t deemax = -0.1;
300 Float_t epsil = 1e-4;
301 Float_t stmin = -0.001;
303 Float_t absl, radl, d, buf[1];
304 Float_t agm[2], dgm, zgm[2], wgm[2];
307 //////////////////////////////////////////////////////////////////////////
309 //////////////////////////////////////////////////////////////////////////
311 AliMaterial( 1, "Al $", 26.98, 13.0, 2.7 , 8.9 , 37.2);
312 AliMaterial( 2, "Air$", 14.61, 7.3, 0.001205, 30420.0 , 67500.0);
313 AliMaterial( 4, "Xe $", 131.29, 54.0, dxe , 1447.59, 0.0);
314 AliMaterial( 5, "Cu $", 63.54, 29.0, 8.96 , 1.43, 14.8);
315 AliMaterial( 6, "C $", 12.01, 6.0, 2.265 , 18.8 , 74.4);
316 AliMaterial(12, "G10$", 20.00, 10.0, 1.7 , 19.4 , 999.0);
319 AliMixture(3, "Polyethilene$", ape, zpe, dpe, -2, wpe);
320 AliMixture(7, "Mylar$", amy, zmy, dmy, -3, wmy);
321 AliMixture(8, "CO2$", aco, zco, dco, -2, wco);
322 AliMixture(9, "Isobutane$", ais, zis, dis, -2, wis);
323 AliMixture(13,"Water$", awa, zwa, dwa, -2, wwa);
328 // Get properties of Xe
329 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
330 // Get properties of CO2
331 gMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
332 // Create gas mixture
335 dgm = wgm[0] * dxe + wgm[1] * dco;
336 AliMixture(10, "Gas mixture 1$", agm, zgm, dgm, 2, wgm);
337 // Xe/Isobutane-mixture
338 // Get properties of Xe
339 gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
340 // Get properties of Isobutane
341 gMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
342 // Create gas mixture
345 dgm = wgm[0] * dxe + wgm[1] * dis;
346 AliMixture(11, "Gas mixture 2$", agm, zgm, dgm, 2, wgm);
348 //////////////////////////////////////////////////////////////////////////
349 // Tracking Media Parameters
350 //////////////////////////////////////////////////////////////////////////
353 AliMedium(1, "Al Frame$", 1, 0, ISXFLD, SXMGMX
354 , tmaxfd, stemax, deemax, epsil, stmin);
356 AliMedium(2, "Air$", 2, 0, ISXFLD, SXMGMX
357 , tmaxfd, stemax, deemax, epsil, stmin);
359 AliMedium(3, "Radiator$", 3, 0, ISXFLD, SXMGMX
360 , tmaxfd, stemax, deemax, epsil, stmin);
362 AliMedium(4, "Xe$", 4, 1, ISXFLD, SXMGMX
363 , tmaxfd, stemax, deemax, epsil, stmin);
365 AliMedium(5, "Padplane$", 5, 1, ISXFLD, SXMGMX
366 , tmaxfd, stemax, deemax, epsil, stmin);
368 AliMedium(6, "Readout$", 1, 0, ISXFLD, SXMGMX
369 , tmaxfd, stemax, deemax, epsil, stmin);
371 AliMedium(7, "C Frame$", 6, 0, ISXFLD, SXMGMX
372 , tmaxfd, stemax, deemax, epsil, stmin);
374 AliMedium(8, "Mylar$", 7, 0, ISXFLD, SXMGMX
375 , tmaxfd, stemax, deemax, epsil, stmin);
377 // Gas-mixture (Xe/CO2)
378 AliMedium(9, "Gas-mix$", 10, 1, ISXFLD, SXMGMX
379 , tmaxfd, stemax, deemax, epsil, stmin);
382 // Gas-mixture (Xe/Isobutane)
383 AliMedium(9, "Gas-mix$", 11, 1, ISXFLD, SXMGMX
384 , tmaxfd, stemax, deemax, epsil, stmin);
386 // Nomex-honeycomb (use carbon for the time being)
387 AliMedium(10, "Nomex$", 6, 0, ISXFLD, SXMGMX
388 , tmaxfd, stemax, deemax, epsil, stmin);
389 // Kapton foils (use Mylar for the time being)
390 AliMedium(11, "Kapton$", 7, 0, ISXFLD, SXMGMX
391 , tmaxfd, stemax, deemax, epsil, stmin);
392 // Gas-filling of the radiator
393 AliMedium(12, "CO2$", 8, 0, ISXFLD, SXMGMX
394 , tmaxfd, stemax, deemax, epsil, stmin);
396 AliMedium(13, "G10-plates$",12, 0, ISXFLD, SXMGMX
397 , tmaxfd, stemax, deemax, epsil, stmin);
399 AliMedium(14, "Water$", 13, 0, ISXFLD, SXMGMX
400 , tmaxfd, stemax, deemax, epsil, stmin);
404 //_____________________________________________________________________________
405 void AliTRD::DrawModule()
408 // Draw a shaded view of the Transition Radiation Detector version 0
411 // Set everything unseen
412 gMC->Gsatt("*" ,"SEEN",-1);
414 // Set ALIC mother transparent
415 gMC->Gsatt("ALIC","SEEN", 0);
417 // Set the volumes visible
418 if (fGeometry->IsVersion() == 0) {
419 gMC->Gsatt("B071","SEEN", 0);
420 gMC->Gsatt("B074","SEEN", 0);
421 gMC->Gsatt("B075","SEEN", 0);
422 gMC->Gsatt("B077","SEEN", 0);
423 gMC->Gsatt("BTR1","SEEN", 0);
424 gMC->Gsatt("BTR2","SEEN", 0);
425 gMC->Gsatt("BTR3","SEEN", 0);
426 gMC->Gsatt("TRD1","SEEN", 0);
427 gMC->Gsatt("TRD2","SEEN", 0);
428 gMC->Gsatt("TRD3","SEEN", 0);
431 gMC->Gsatt("B071","SEEN", 0);
432 gMC->Gsatt("B074","SEEN", 0);
433 gMC->Gsatt("B075","SEEN", 0);
434 gMC->Gsatt("B077","SEEN", 0);
435 gMC->Gsatt("BTR1","SEEN", 0);
436 gMC->Gsatt("BTR2","SEEN", 0);
437 gMC->Gsatt("BTR3","SEEN", 0);
438 gMC->Gsatt("TRD1","SEEN", 0);
439 if (fGeometry->GetPHOShole())
440 gMC->Gsatt("TRD2","SEEN", 0);
441 if (fGeometry->GetRICHhole())
442 gMC->Gsatt("TRD3","SEEN", 0);
444 gMC->Gsatt("UCII","SEEN", 0);
445 gMC->Gsatt("UCIM","SEEN", 0);
446 gMC->Gsatt("UCIO","SEEN", 0);
447 gMC->Gsatt("UL02","SEEN", 1);
448 gMC->Gsatt("UL05","SEEN", 1);
449 gMC->Gsatt("UL06","SEEN", 1);
451 gMC->Gdopt("hide", "on");
452 gMC->Gdopt("shad", "on");
453 gMC->Gsatt("*", "fill", 7);
454 gMC->SetClipBox(".");
455 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
457 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
458 gMC->Gdhead(1111, "Transition Radiation Detector");
459 gMC->Gdman(18, 4, "MAN");
463 //_____________________________________________________________________________
464 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
467 // Distance between the mouse and the TRD detector on the screen
474 //_____________________________________________________________________________
478 // Initialize the TRD detector after the geometry has been created
484 for (i = 0; i < 35; i++) printf("*");
485 printf(" TRD_INIT ");
486 for (i = 0; i < 35; i++) printf("*");
490 if (fGeometry->IsVersion() == 0) {
491 printf(" Geometry for spaceframe with holes initialized.\n\n");
493 else if (fGeometry->IsVersion() == 1) {
494 printf(" Geometry for spaceframe without holes initialized.\n");
495 if (fGeometry->GetPHOShole())
496 printf(" Leave space in front of PHOS free.\n");
497 if (fGeometry->GetRICHhole())
498 printf(" Leave space in front of RICH free.\n");
503 printf(" Gas Mixture: 90%% Xe + 10%% CO2\n\n");
505 printf(" Gas Mixture: 97%% Xe + 3%% Isobutane\n\n");
509 //_____________________________________________________________________________
510 void AliTRD::MakeBranch(Option_t* option)
513 // Create Tree branches for the TRD digits and cluster.
516 Int_t buffersize = 4000;
517 Char_t branchname[15];
519 AliDetector::MakeBranch(option);
521 Char_t *R = strstr(option,"R");
522 sprintf(branchname,"%srecPoints",GetName());
523 if (fRecPoints && gAlice->TreeR() && R) {
524 gAlice->TreeR()->Branch(branchname,fRecPoints->IsA()->GetName()
525 ,&fRecPoints,buffersize,0);
526 printf("* AliTRD::MakeBranch * Making Branch %s for points in TreeR\n",branchname);
531 //_____________________________________________________________________________
532 void AliTRD::ResetRecPoints()
535 // Reset number of reconstructed points and the point array
539 if (fRecPoints) fRecPoints->Delete();
543 //_____________________________________________________________________________
544 void AliTRD::SetTreeAddress()
547 // Set the branch addresses for the trees.
550 Char_t branchname[15];
552 AliDetector::SetTreeAddress();
555 TTree *treeR = gAlice->TreeR();
558 sprintf(branchname,"%srecPoints",GetName());
560 branch = treeR->GetBranch(branchname);
562 branch->SetAddress(&fRecPoints);
569 //_____________________________________________________________________________
570 void AliTRD::SetGasMix(Int_t imix)
573 // Defines the gas mixture (imix=0: Xe/Isobutane imix=1: Xe/CO2)
576 if ((imix < 0) || (imix > 1)) {
577 printf("Wrong input value: %d\n",imix);
578 printf("Use standard setting\n");