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 ///////////////////////////////////////////////////////////////////////////////
20 // Transition Radiation Detector //
21 // This class contains the basic functions for the Transition Radiation //
24 ///////////////////////////////////////////////////////////////////////////////
27 #include <Riostream.h>
30 #include <TGeometry.h>
31 #include <TLorentzVector.h>
35 #include <TParticle.h>
38 #include <TVirtualMC.h>
42 #include "AliLoader.h"
48 #include "AliTRDdigit.h"
49 #include "AliTRDdigitizer.h"
50 #include "AliTRDdigitsManager.h"
51 #include "AliTRDgeometryFull.h"
52 #include "AliTRDhit.h"
53 #include "AliTRDpoints.h"
54 #include "AliTRDrawData.h"
55 #include "AliTrackReference.h"
57 #include "AliTRDSimParam.h"
58 #include "AliTRDRecParam.h"
59 #include "AliTRDCommonParam.h"
60 #include "AliTRDcalibDB.h"
64 //_____________________________________________________________________________
68 // Default constructor
85 //_____________________________________________________________________________
86 AliTRD::AliTRD(const char *name, const char *title)
87 : AliDetector(name,title)
90 // Standard constructor for the TRD
93 // Check that FRAME is there otherwise we have no place where to
95 AliModule* frame = gAlice->GetModule("FRAME");
97 Error("Ctor","TRD needs FRAME to be present\n");
101 // Define the TRD geometry
102 if ((frame->IsVersion() == 0) ||
103 (frame->IsVersion() == 1)) {
104 fGeometry = new AliTRDgeometryFull();
107 Error("Ctor","Could not find valid FRAME version\n");
112 TDirectory* saveDir = gDirectory;
113 gAlice->GetRunLoader()->CdGAFile();
114 fGeometry->Write("TRDgeometry");
117 // Allocate the hit array
118 fHits = new TClonesArray("AliTRDhit" ,405);
119 gAlice->GetMCApp()->AddHitList(fHits);
121 // Allocate the digits array
132 SetMarkerColor(kWhite);
136 //_____________________________________________________________________________
137 AliTRD::AliTRD(const AliTRD &trd):AliDetector(trd)
143 ((AliTRD &) trd).Copy(*this);
147 //_____________________________________________________________________________
166 //_____________________________________________________________________________
167 void AliTRD::Hits2Digits()
172 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
173 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
176 digitizer.InitDetector();
178 if (!fLoader->TreeH()) fLoader->LoadHits("read");
179 fLoader->LoadDigits("recreate");
180 AliRunLoader* runLoader = fLoader->GetRunLoader();
182 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
183 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
184 digitizer.MakeDigits();
185 digitizer.WriteDigits();
188 fLoader->UnloadHits();
189 fLoader->UnloadDigits();
193 //_____________________________________________________________________________
194 void AliTRD::Hits2SDigits()
197 // Create summable digits
200 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
201 // For the summable digits
202 digitizer.SetSDigits(kTRUE);
203 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
206 digitizer.InitDetector();
208 if (!fLoader->TreeH()) fLoader->LoadHits("read");
209 fLoader->LoadSDigits("recreate");
210 AliRunLoader* runLoader = fLoader->GetRunLoader();
212 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
213 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
214 digitizer.MakeDigits();
215 digitizer.WriteDigits();
218 fLoader->UnloadHits();
219 fLoader->UnloadSDigits();
223 //_____________________________________________________________________________
224 AliDigitizer* AliTRD::CreateDigitizer(AliRunDigitizer* manager) const
227 // Creates a new digitizer object
230 return new AliTRDdigitizer(manager);
234 //_____________________________________________________________________________
235 void AliTRD::SDigits2Digits()
238 // Create final digits from summable digits
241 // Create the TRD digitizer
242 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
243 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
246 digitizer.SetEvent(gAlice->GetEvNumber());
249 digitizer.InitDetector();
251 // Read the s-digits via digits manager
252 AliTRDdigitsManager sdigitsManager;
254 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
255 sdigitsManager.SetSDigits(kTRUE);
256 sdigitsManager.CreateArrays();
258 if (!fLoader->TreeS())
259 if (fLoader->LoadSDigits("read"))
261 Error("SDigits2Digits","Error while reading SDigits for event %d",gAlice->GetEvNumber());
264 if (!fLoader->TreeS()) return;
266 sdigitsManager.ReadDigits(fLoader->TreeS());
268 // Add the s-digits to the input list
269 digitizer.AddSDigitsManager(&sdigitsManager);
271 // Convert the s-digits to normal digits
272 digitizer.SDigits2Digits();
275 if (!fLoader->TreeD()) fLoader->MakeTree("D");
276 if (digitizer.MakeBranch(fLoader->TreeD())){
277 digitizer.WriteDigits();
282 //_____________________________________________________________________________
283 void AliTRD::Digits2Raw()
286 // convert digits of the current event to raw data
289 fLoader->LoadDigits();
290 TTree* digits = fLoader->TreeD();
292 Error("Digits2Raw", "no digits tree");
296 AliTRDrawData rawWriter;
297 // rawWriter.SetDebug(2);
298 if (!rawWriter.Digits2Raw(digits)) {
299 Error("AliTRD::Digits2Raw","The raw writer could not load the digits tree");
302 fLoader->UnloadDigits();
306 //_____________________________________________________________________________
307 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
311 // Add a hit for the TRD
314 TClonesArray &lhits = *fHits;
315 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
320 hit->SetAmplification();
328 //_____________________________________________________________________________
329 void AliTRD::BuildGeometry()
332 // Create the ROOT TNode geometry for the TRD
339 Float_t zmax1, zmax2;
343 const Int_t kColorTRD = 46;
345 // Find the top node alice
346 top = gAlice->GetGeometry()->GetNode("alice");
348 if (fDisplayType == 0) {
350 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
351 rmin = AliTRDgeometry::Rmin();
352 rmax = AliTRDgeometry::Rmax();
353 pgon->DefineSection(0,-AliTRDgeometry::Zmax1(),rmax,rmax);
354 pgon->DefineSection(1,-AliTRDgeometry::Zmax2(),rmin,rmax);
355 pgon->DefineSection(2, AliTRDgeometry::Zmax2(),rmin,rmax);
356 pgon->DefineSection(3, AliTRDgeometry::Zmax1(),rmax,rmax);
358 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
359 node->SetLineColor(kColorTRD);
363 else if (fDisplayType == 1) {
367 Float_t slope = (AliTRDgeometry::Zmax1() - AliTRDgeometry::Zmax2())
368 / (AliTRDgeometry::Rmax() - AliTRDgeometry::Rmin());
370 rmin = AliTRDgeometry::Rmin() + AliTRDgeometry::CraHght();
371 rmax = rmin + AliTRDgeometry::CdrHght();
373 Float_t thickness = rmin - AliTRDgeometry::Rmin();
374 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
375 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
377 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
379 sprintf(name,"S_TR1%d",iPlan);
380 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
381 pgon->DefineSection(0,-zmax1,rmax,rmax);
382 pgon->DefineSection(1,-zmax2,rmin,rmax);
383 pgon->DefineSection(2, zmax2,rmin,rmax);
384 pgon->DefineSection(3, zmax1,rmax,rmax);
386 node = new TNode("TRD","TRD",name,0,0,0,"");
387 node->SetLineColor(kColorTRD);
390 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
391 rmin = rmin + height;
392 rmax = rmax + height;
393 zmax1 = zmax1 + slope * height;
394 zmax2 = zmax2 + slope * height;
398 thickness += AliTRDgeometry::DrThick();
399 rmin = AliTRDgeometry::Rmin() + thickness;
400 rmax = rmin + AliTRDgeometry::AmThick();
401 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
402 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
404 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
406 sprintf(name,"S_TR2%d",iPlan);
407 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
408 pgon->DefineSection(0,-zmax1,rmax,rmax);
409 pgon->DefineSection(1,-zmax2,rmin,rmax);
410 pgon->DefineSection(2, zmax2,rmin,rmax);
411 pgon->DefineSection(3, zmax1,rmax,rmax);
413 node = new TNode("TRD","TRD",name,0,0,0,"");
414 node->SetLineColor(kColorTRD);
417 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
418 rmin = rmin + height;
419 rmax = rmax + height;
420 zmax1 = zmax1 + slope * height;
421 zmax2 = zmax2 + slope * height;
429 //_____________________________________________________________________________
430 void AliTRD::Copy(TObject &trd) const
436 ((AliTRD &) trd).fGeometry = fGeometry;
437 ((AliTRD &) trd).fGasDensity = fGasDensity;
438 ((AliTRD &) trd).fFoilDensity = fFoilDensity;
439 ((AliTRD &) trd).fDrawTR = fDrawTR;
440 ((AliTRD &) trd).fDisplayType = fDisplayType;
442 //AliDetector::Copy(trd);
446 //_____________________________________________________________________________
447 void AliTRD::CreateGeometry()
450 // Creates the volumes for the TRD chambers
453 // Check that FRAME is there otherwise we have no place where to put the TRD
454 AliModule* frame = gAlice->GetModule("FRAME");
456 AliFatal("The TRD needs the FRAME to be defined first");
459 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
463 //_____________________________________________________________________________
464 void AliTRD::CreateMaterials()
467 // Create the materials for the TRD
470 Int_t isxfld = gAlice->Field()->Integ();
471 Float_t sxmgmx = gAlice->Field()->Max();
473 // For polyethilene (CH2)
474 Float_t ape[2] = { 12.011 , 1.0079 };
475 Float_t zpe[2] = { 6.0 , 1.0 };
476 Float_t wpe[2] = { 1.0 , 2.0 };
479 // For mylar (C5H4O2)
480 Float_t amy[3] = { 12.011 , 1.0079, 15.9994 };
481 Float_t zmy[3] = { 6.0 , 1.0 , 8.0 };
482 Float_t wmy[3] = { 5.0 , 4.0 , 2.0 };
486 Float_t aco[2] = { 12.011 , 15.9994 };
487 Float_t zco[2] = { 6.0 , 8.0 };
488 Float_t wco[2] = { 1.0 , 2.0 };
489 Float_t dco = 0.001977;
492 Float_t awa[2] = { 1.0079, 15.9994 };
493 Float_t zwa[2] = { 1.0 , 8.0 };
494 Float_t wwa[2] = { 2.0 , 1.0 };
497 // For isobutane (C4H10)
498 Float_t ais[2] = { 12.011 , 1.0079 };
499 Float_t zis[2] = { 6.0 , 1.0 };
500 Float_t wis[2] = { 4.0 , 10.0 };
501 Float_t dis = 0.00267;
503 // For plexiglas (C5H8O2)
504 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
505 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
506 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
509 // For epoxy (C18H19O3)
510 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
511 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
512 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
513 Float_t dEpoxy = 1.8 ;
516 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
517 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
518 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
519 Float_t dAir = 1.20479E-3;
522 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
523 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
524 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
527 // For Xe/CO2-gas-mixture
528 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
529 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
530 Float_t wXeCO2[3] = { 0.85 , 0.0375 , 0.1125 };
531 // Xe-content of the Xe/CO2-mixture (85% / 15%)
533 Float_t dxe = 0.00549;
534 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
536 // General tracking parameter
537 Float_t tmaxfd = -10.;
538 Float_t stemax = -1e10;
539 Float_t deemax = -0.1;
540 Float_t epsil = 1e-4;
541 Float_t stmin = -0.001;
543 //////////////////////////////////////////////////////////////////////////
545 //////////////////////////////////////////////////////////////////////////
547 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
548 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
549 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
550 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
551 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
552 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
555 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
556 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
557 AliMixture(7, "Mylar", amy, zmy, dmy, -3, wmy );
558 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
559 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
560 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, 3, wXeCO2);
561 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
562 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
563 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
564 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
566 //////////////////////////////////////////////////////////////////////////
567 // Tracking Media Parameters
568 //////////////////////////////////////////////////////////////////////////
571 AliMedium(1, "Al Frame", 1, 0, isxfld, sxmgmx
572 , tmaxfd, stemax, deemax, epsil, stmin);
574 AliMedium(2, "Air", 2, 0, isxfld, sxmgmx
575 , tmaxfd, stemax, deemax, epsil, stmin);
577 AliMedium(3, "Radiator", 3, 0, isxfld, sxmgmx
578 , tmaxfd, stemax, deemax, epsil, stmin);
580 AliMedium(4, "Xe", 4, 1, isxfld, sxmgmx
581 , tmaxfd, stemax, deemax, epsil, stmin);
583 AliMedium(5, "Padplane", 5, 1, isxfld, sxmgmx
584 , tmaxfd, stemax, deemax, epsil, stmin);
586 AliMedium(6, "Readout", 1, 0, isxfld, sxmgmx
587 , tmaxfd, stemax, deemax, epsil, stmin);
589 AliMedium(7, "C Frame", 6, 0, isxfld, sxmgmx
590 , tmaxfd, stemax, deemax, epsil, stmin);
592 AliMedium(8, "Mylar", 7, 0, isxfld, sxmgmx
593 , tmaxfd, stemax, deemax, epsil, stmin);
594 // Gas-mixture (Xe/CO2)
595 AliMedium(9, "Gas-mix", 10, 1, isxfld, sxmgmx
596 , tmaxfd, stemax, deemax, epsil, stmin);
597 // Nomex-honeycomb (use carbon for the time being)
598 AliMedium(10, "Nomex", 6, 0, isxfld, sxmgmx
599 , tmaxfd, stemax, deemax, epsil, stmin);
600 // Kapton foils (use Mylar for the time being)
601 AliMedium(11, "Kapton", 7, 0, isxfld, sxmgmx
602 , tmaxfd, stemax, deemax, epsil, stmin);
603 // Gas-filling of the radiator
604 AliMedium(12, "CO2", 8, 0, isxfld, sxmgmx
605 , tmaxfd, stemax, deemax, epsil, stmin);
607 AliMedium(13, "G10-plates",12, 0, isxfld, sxmgmx
608 , tmaxfd, stemax, deemax, epsil, stmin);
610 AliMedium(14, "Water", 13, 0, isxfld, sxmgmx
611 , tmaxfd, stemax, deemax, epsil, stmin);
612 // Rohacell (plexiglas) for the radiator
613 AliMedium(15, "Rohacell", 14, 0, isxfld, sxmgmx
614 , tmaxfd, stemax, deemax, epsil, stmin);
616 AliMedium(16, "MCM-Al" , 1, 0, isxfld, sxmgmx
617 , tmaxfd, stemax, deemax, epsil, stmin);
619 AliMedium(17, "MCM-Sn" , 15, 0, isxfld, sxmgmx
620 , tmaxfd, stemax, deemax, epsil, stmin);
622 AliMedium(18, "MCM-Cu" , 5, 0, isxfld, sxmgmx
623 , tmaxfd, stemax, deemax, epsil, stmin);
625 AliMedium(19, "MCM-G10" , 12, 0, isxfld, sxmgmx
626 , tmaxfd, stemax, deemax, epsil, stmin);
627 // Si in readout chips
628 AliMedium(20, "Chip-Si" , 16, 0, isxfld, sxmgmx
629 , tmaxfd, stemax, deemax, epsil, stmin);
630 // Epoxy in readout chips
631 AliMedium(21, "Chip-Ep" , 17, 0, isxfld, sxmgmx
632 , tmaxfd, stemax, deemax, epsil, stmin);
634 AliMedium(22, "Conn-PE" , 3, 0, isxfld, sxmgmx
635 , tmaxfd, stemax, deemax, epsil, stmin);
637 AliMedium(23, "Chip-Cu" , 5, 0, isxfld, sxmgmx
638 , tmaxfd, stemax, deemax, epsil, stmin);
639 // Al of cooling pipes
640 AliMedium(24, "Cooling" , 1, 0, isxfld, sxmgmx
641 , tmaxfd, stemax, deemax, epsil, stmin);
643 AliMedium(25, "Serv-Cu" , 5, 0, isxfld, sxmgmx
644 , tmaxfd, stemax, deemax, epsil, stmin);
646 // Save the density values for the TRD absorbtion
652 //_____________________________________________________________________________
653 void AliTRD::DrawModule() const
656 // Draw a shaded view of the Transition Radiation Detector version 0
659 // Set everything unseen
660 gMC->Gsatt("*" ,"SEEN",-1);
662 // Set ALIC mother transparent
663 gMC->Gsatt("ALIC","SEEN", 0);
665 // Set the volumes visible
666 if (fGeometry->IsVersion() == 0) {
667 gMC->Gsatt("B071","SEEN", 0);
668 gMC->Gsatt("B074","SEEN", 0);
669 gMC->Gsatt("B075","SEEN", 0);
670 gMC->Gsatt("B077","SEEN", 0);
671 gMC->Gsatt("BTR1","SEEN", 0);
672 gMC->Gsatt("BTR2","SEEN", 0);
673 gMC->Gsatt("BTR3","SEEN", 0);
674 gMC->Gsatt("UTR1","SEEN", 0);
675 gMC->Gsatt("UTR2","SEEN", 0);
676 gMC->Gsatt("UTR3","SEEN", 0);
679 gMC->Gsatt("B071","SEEN", 0);
680 gMC->Gsatt("B074","SEEN", 0);
681 gMC->Gsatt("B075","SEEN", 0);
682 gMC->Gsatt("B077","SEEN", 0);
683 gMC->Gsatt("BTR1","SEEN", 0);
684 gMC->Gsatt("BTR2","SEEN", 0);
685 gMC->Gsatt("BTR3","SEEN", 0);
686 gMC->Gsatt("UTR1","SEEN", 0);
687 if (fGeometry->GetPHOShole())
688 gMC->Gsatt("UTR2","SEEN", 0);
689 if (fGeometry->GetRICHhole())
690 gMC->Gsatt("UTR3","SEEN", 0);
692 // gMC->Gsatt("UCII","SEEN", 0);
693 // gMC->Gsatt("UCIM","SEEN", 0);
694 // gMC->Gsatt("UCIO","SEEN", 0);
695 // gMC->Gsatt("UL02","SEEN", 1);
696 // gMC->Gsatt("UL05","SEEN", 1);
697 // gMC->Gsatt("UL06","SEEN", 1);
699 gMC->Gdopt("hide", "on");
700 gMC->Gdopt("shad", "on");
701 gMC->Gsatt("*", "fill", 7);
702 gMC->SetClipBox(".");
703 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
705 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
706 gMC->Gdhead(1111, "Transition Radiation Detector");
707 gMC->Gdman(18, 4, "MAN");
711 //_____________________________________________________________________________
712 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
715 // Distance between the mouse and the TRD detector on the screen
722 //_____________________________________________________________________________
726 // Initialize the TRD detector after the geometry has been created
729 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
731 if (fGeometry->IsVersion() == 1) {
732 AliInfo("Full geometry version initialized");
733 if (fGeometry->GetPHOShole())
734 AliInfo("Leave space in front of PHOS free");
735 if (fGeometry->GetRICHhole())
736 AliInfo("Leave space in front of RICH free");
739 AliError("Not a valid geometry");
744 //_____________________________________________________________________________
745 void AliTRD::LoadPoints(Int_t )
748 // Store x, y, z of all hits in memory.
749 // Hit originating from TR photons are given a different color
753 // AliDetector::LoadPoints(track);
757 if (fHits == 0) return;
759 Int_t nhits = fHits->GetEntriesFast();
760 if (nhits == 0) return;
762 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
763 if (fPoints == 0) fPoints = new TObjArray(tracks);
767 Int_t *ntrkE = new Int_t[tracks];
768 Int_t *ntrkT = new Int_t[tracks];
769 Int_t *limiE = new Int_t[tracks];
770 Int_t *limiT = new Int_t[tracks];
771 Float_t **coorE = new Float_t*[tracks];
772 Float_t **coorT = new Float_t*[tracks];
773 for(Int_t i = 0; i < tracks; i++) {
782 AliTRDpoints *points = 0;
785 Int_t chunk = nhits / 4 + 1;
787 // Loop over all the hits and store their position
788 ahit = (AliTRDhit *) FirstHit(-1);
792 if (ahit->GetCharge() >= 0) {
794 trk = ahit->GetTrack();
795 if (ntrkE[trk] == limiE[trk]) {
796 // Initialise a new track
797 fp = new Float_t[3*(limiE[trk]+chunk)];
799 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
800 delete [] coorE[trk];
808 fp[3*ntrkE[trk] ] = ahit->X();
809 fp[3*ntrkE[trk]+1] = ahit->Y();
810 fp[3*ntrkE[trk]+2] = ahit->Z();
815 else if ((ahit->GetCharge() < 0) && (fDrawTR)) {
817 trk = ahit->GetTrack();
818 if (ntrkT[trk] == limiT[trk]) {
819 // Initialise a new track
820 fp = new Float_t[3*(limiT[trk]+chunk)];
822 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
823 delete [] coorT[trk];
831 fp[3*ntrkT[trk] ] = ahit->X();
832 fp[3*ntrkT[trk]+1] = ahit->Y();
833 fp[3*ntrkT[trk]+2] = ahit->Z();
838 ahit = (AliTRDhit *) NextHit();
842 for (trk = 0; trk < tracks; ++trk) {
844 if (ntrkE[trk] || ntrkT[trk]) {
846 points = new AliTRDpoints();
847 points->SetDetector(this);
848 points->SetParticle(trk);
850 // Set the dEdx points
852 points->SetMarkerColor(GetMarkerColor());
853 points->SetMarkerSize(GetMarkerSize());
854 points->SetPolyMarker(ntrkE[trk],coorE[trk],GetMarkerStyle());
855 delete [] coorE[trk];
859 // Set the TR photon points
861 points->SetTRpoints(ntrkT[trk],coorT[trk]);
862 delete [] coorT[trk];
866 fPoints->AddAt(points,trk);
881 //_____________________________________________________________________________
882 void AliTRD::MakeBranch(Option_t* option)
885 // Create Tree branches for the TRD digits.
888 Int_t buffersize = 4000;
889 Char_t branchname[15];
890 sprintf(branchname,"%s",GetName());
892 const char *cD = strstr(option,"D");
894 AliDetector::MakeBranch(option);
896 if (fDigits && gAlice->TreeD() && cD) {
897 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
902 //_____________________________________________________________________________
903 void AliTRD::ResetDigits()
906 // Reset number of digits and the digits array for this detector
910 if (fDigits) fDigits->Clear();
914 //_____________________________________________________________________________
915 void AliTRD::SetTreeAddress()
918 // Set the branch addresses for the trees.
921 if ( fLoader->TreeH() && (fHits == 0x0)) {
922 fHits = new TClonesArray("AliTRDhit",405);
924 AliDetector::SetTreeAddress();
928 //_____________________________________________________________________________
929 void AliTRD::SetPHOShole()
932 // Selects a geometry with a hole in front of the PHOS
935 fGeometry->SetPHOShole();
939 //_____________________________________________________________________________
940 void AliTRD::SetRICHhole()
943 // Selects a geometry with a hole in front of the RICH
946 fGeometry->SetRICHhole();
950 //_____________________________________________________________________________
951 AliTRD &AliTRD::operator=(const AliTRD &trd)
954 // Assignment operator
957 if (this != &trd) ((AliTRD &) trd).Copy(*this);