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"
47 #include "AliTrackReference.h"
50 #include "AliTRDdigit.h"
51 #include "AliTRDdigitizer.h"
52 #include "AliTRDdigitsManager.h"
53 #include "AliTRDgeometry.h"
54 #include "AliTRDhit.h"
55 #include "AliTRDpoints.h"
56 #include "AliTRDrawData.h"
57 #include "AliTRDSimParam.h"
58 #include "AliTRDRecParam.h"
59 #include "AliTRDCommonParam.h"
60 #include "AliTRDcalibDB.h"
64 //_____________________________________________________________________________
74 // Default constructor
79 //_____________________________________________________________________________
80 AliTRD::AliTRD(const char *name, const char *title)
81 :AliDetector(name,title)
89 // Standard constructor for the TRD
92 // Check that FRAME is there otherwise we have no place where to put TRD
93 AliModule *frame = gAlice->GetModule("FRAME");
95 AliError("TRD needs FRAME to be present\n");
99 // Define the TRD geometry
100 if ((frame->IsVersion() == 0) ||
101 (frame->IsVersion() == 1)) {
102 fGeometry = new AliTRDgeometry();
105 AliError("Could not find valid FRAME version\n");
110 TDirectory *saveDir = gDirectory;
111 gAlice->GetRunLoader()->CdGAFile();
112 fGeometry->Write("TRDgeometry");
115 // Allocate the hit array
116 fHits = new TClonesArray("AliTRDhit",405);
117 gAlice->GetMCApp()->AddHitList(fHits);
119 //PH SetMarkerColor(kWhite);
123 //_____________________________________________________________________________
142 //_____________________________________________________________________________
143 void AliTRD::Hits2Digits()
149 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
150 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
153 digitizer.InitDetector();
155 if (!fLoader->TreeH()) {
156 fLoader->LoadHits("read");
158 fLoader->LoadDigits("recreate");
160 AliRunLoader *runLoader = fLoader->GetRunLoader();
162 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
163 runLoader->GetEvent(iEvent);
164 digitizer.Open(runLoader,iEvent);
165 digitizer.MakeDigits();
166 digitizer.WriteDigits();
169 fLoader->UnloadHits();
170 fLoader->UnloadDigits();
174 //_____________________________________________________________________________
175 void AliTRD::Hits2SDigits()
178 // Create summable digits
181 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
182 // For the summable digits
183 digitizer.SetSDigits(kTRUE);
184 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
187 digitizer.InitDetector();
189 if (!fLoader->TreeH()) {
190 fLoader->LoadHits("read");
192 fLoader->LoadSDigits("recreate");
194 AliRunLoader *runLoader = fLoader->GetRunLoader();
196 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
197 runLoader->GetEvent(iEvent);
198 digitizer.Open(runLoader,iEvent);
199 digitizer.MakeDigits();
200 digitizer.WriteDigits();
203 fLoader->UnloadHits();
204 fLoader->UnloadSDigits();
208 //_____________________________________________________________________________
209 AliDigitizer *AliTRD::CreateDigitizer(AliRunDigitizer *manager) const
212 // Creates a new digitizer object
215 return new AliTRDdigitizer(manager);
219 //_____________________________________________________________________________
220 void AliTRD::SDigits2Digits()
223 // Create final digits from summable digits
226 // Create the TRD digitizer
227 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
228 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
231 digitizer.SetEvent(gAlice->GetEvNumber());
234 digitizer.InitDetector();
236 // Read the s-digits via digits manager
237 AliTRDdigitsManager sdigitsManager;
239 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
240 sdigitsManager.SetSDigits(kTRUE);
241 sdigitsManager.CreateArrays();
243 if (!fLoader->TreeS()) {
244 if (fLoader->LoadSDigits("read")) {
248 if (!fLoader->TreeS()) {
249 AliError(Form("Error while reading SDigits for event %d",gAlice->GetEvNumber()));
253 sdigitsManager.ReadDigits(fLoader->TreeS());
255 // Add the s-digits to the input list
256 digitizer.AddSDigitsManager(&sdigitsManager);
258 // Convert the s-digits to normal digits
259 digitizer.SDigits2Digits();
262 if (!fLoader->TreeD()) {
263 fLoader->MakeTree("D");
265 if (digitizer.MakeBranch(fLoader->TreeD())){
266 digitizer.WriteDigits();
271 //_____________________________________________________________________________
272 void AliTRD::Digits2Raw()
275 // Convert digits of the current event to raw data
278 fLoader->LoadDigits();
279 TTree *digits = fLoader->TreeD();
281 AliError("No digits tree");
285 AliTRDrawData rawWriter;
286 if (!rawWriter.Digits2Raw(digits)) {
287 AliError("The raw writer could not load the digits tree");
290 fLoader->UnloadDigits();
294 //_____________________________________________________________________________
295 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
299 // Add a hit for the TRD
302 TClonesArray &lhits = *fHits;
303 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
309 hit->SetAmplification();
318 //_____________________________________________________________________________
319 void AliTRD::BuildGeometry()
322 // Create the ROOT TNode geometry for the TRD
329 // The dimensions of the TRD super module
330 const Float_t kRmin = 291.0;
331 const Float_t kRmax = 369.0;
332 const Float_t kZmax1 = 378.35;
333 const Float_t kZmax2 = 302.0;
342 const Int_t kColorTRD = 46;
344 // Find the top node alice
345 top = gAlice->GetGeometry()->GetNode("alice");
347 if (fDisplayType == 0) {
349 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
352 pgon->DefineSection(0,-kZmax1,rmax,rmax);
353 pgon->DefineSection(1,-kZmax2,rmin,rmax);
354 pgon->DefineSection(2, kZmax2,rmin,rmax);
355 pgon->DefineSection(3, kZmax1,rmax,rmax);
357 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
358 node->SetLineColor(kColorTRD);
362 else if (fDisplayType == 1) {
366 Float_t slope = (kZmax1 - kZmax2) / (kRmax - kRmin);
368 rmin = kRmin + AliTRDgeometry::CraHght();
369 rmax = rmin + AliTRDgeometry::CdrHght();
371 Float_t thickness = rmin - kRmin;
372 zmax2 = kZmax2 + slope * thickness;
373 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
375 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
377 sprintf(name,"S_TR1%d",iPlan);
378 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
379 pgon->DefineSection(0,-zmax1,rmax,rmax);
380 pgon->DefineSection(1,-zmax2,rmin,rmax);
381 pgon->DefineSection(2, zmax2,rmin,rmax);
382 pgon->DefineSection(3, zmax1,rmax,rmax);
384 node = new TNode("TRD","TRD",name,0,0,0,"");
385 node->SetLineColor(kColorTRD);
388 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
389 rmin = rmin + height;
390 rmax = rmax + height;
391 zmax1 = zmax1 + slope * height;
392 zmax2 = zmax2 + slope * height;
396 thickness += AliTRDgeometry::DrThick();
397 rmin = kRmin + thickness;
398 rmax = rmin + AliTRDgeometry::AmThick();
399 zmax2 = kZmax2 + slope * thickness;
400 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
402 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
404 sprintf(name,"S_TR2%d",iPlan);
405 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
406 pgon->DefineSection(0,-zmax1,rmax,rmax);
407 pgon->DefineSection(1,-zmax2,rmin,rmax);
408 pgon->DefineSection(2, zmax2,rmin,rmax);
409 pgon->DefineSection(3, zmax1,rmax,rmax);
411 node = new TNode("TRD","TRD",name,0,0,0,"");
412 node->SetLineColor(kColorTRD);
415 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
416 rmin = rmin + height;
417 rmax = rmax + height;
418 zmax1 = zmax1 + slope * height;
419 zmax2 = zmax2 + slope * height;
427 //_____________________________________________________________________________
428 void AliTRD::CreateGeometry()
431 // Creates the volumes for the TRD chambers
434 // Check that FRAME is there otherwise we have no place where to put the TRD
435 AliModule *frame = gAlice->GetModule("FRAME");
437 AliFatal("The TRD needs the FRAME to be defined first");
440 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
444 //_____________________________________________________________________________
445 void AliTRD::CreateMaterials()
448 // Create the materials for the TRD
451 Int_t isxfld = gAlice->Field()->Integ();
452 Float_t sxmgmx = gAlice->Field()->Max();
454 // For polyethilene (CH2)
455 Float_t ape[2] = { 12.011 , 1.0079 };
456 Float_t zpe[2] = { 6.0 , 1.0 };
457 Float_t wpe[2] = { 1.0 , 2.0 };
461 Float_t aco[2] = { 12.011 , 15.9994 };
462 Float_t zco[2] = { 6.0 , 8.0 };
463 Float_t wco[2] = { 1.0 , 2.0 };
464 Float_t dco = 0.00186;
467 Float_t awa[2] = { 1.0079, 15.9994 };
468 Float_t zwa[2] = { 1.0 , 8.0 };
469 Float_t wwa[2] = { 2.0 , 1.0 };
472 // For isobutane (C4H10)
473 Float_t ais[2] = { 12.011 , 1.0079 };
474 Float_t zis[2] = { 6.0 , 1.0 };
475 Float_t wis[2] = { 4.0 , 10.0 };
476 Float_t dis = 0.00267;
478 // For plexiglas (C5H8O2)
479 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
480 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
481 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
484 // For epoxy (C18H19O3)
485 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
486 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
487 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
488 Float_t dEpoxy = 1.8 ;
490 // For Araldite, low density epoxy (C18H19O3)
491 Float_t aAral[3] = { 15.9994, 1.0079, 12.011 };
492 Float_t zAral[3] = { 8.0 , 1.0 , 6.0 };
493 Float_t wAral[3] = { 3.0 , 19.0 , 18.0 };
494 Float_t dAral = 1.05;
497 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
498 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
499 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
500 Float_t dAir = 1.20479e-03;
503 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
504 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
505 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
508 // For Xe/CO2-gas-mixture
509 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
510 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
511 Float_t wXeCO2[3] = { 8.5 , 1.5 , 3.0 };
512 // Xe-content of the Xe/CO2-mixture (85% / 15%)
514 Float_t dxe = 0.00549;
515 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
517 // General tracking parameter
518 Float_t tmaxfd = -10.0;
519 Float_t stemax = -1.0e10;
520 Float_t deemax = -0.1;
521 Float_t epsil = 1.0e-4;
522 Float_t stmin = -0.001;
524 //////////////////////////////////////////////////////////////////////////
526 //////////////////////////////////////////////////////////////////////////
528 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
529 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
530 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
531 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
532 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
533 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
534 AliMaterial(18, "Fe" , 55.85, 26.0, 7.87 , 1.76, 14.8);
537 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
538 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
539 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
540 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
541 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, -3, wXeCO2);
542 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
543 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
544 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
545 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
546 AliMixture(19,"Araldite", aAral, zAral, dAral, -3, wAral );
548 //////////////////////////////////////////////////////////////////////////
549 // Tracking Media Parameters
550 //////////////////////////////////////////////////////////////////////////
553 AliMedium( 1,"Al Frame" , 1,0,isxfld,sxmgmx
554 ,tmaxfd,stemax,deemax,epsil,stmin);
556 AliMedium( 2,"Air" , 2,0,isxfld,sxmgmx
557 ,tmaxfd,stemax,deemax,epsil,stmin);
559 AliMedium( 3,"Wires" , 5,0,isxfld,sxmgmx
560 ,tmaxfd,stemax,deemax,epsil,stmin);
561 // All other ROB materials (caps, etc.)
562 AliMedium( 4,"ROB Other" , 5,0,isxfld,sxmgmx
563 ,tmaxfd,stemax,deemax,epsil,stmin);
565 AliMedium( 5,"Padplane" , 5,1,isxfld,sxmgmx
566 ,tmaxfd,stemax,deemax,epsil,stmin);
568 AliMedium( 6,"Readout" , 5,0,isxfld,sxmgmx
569 ,tmaxfd,stemax,deemax,epsil,stmin);
571 AliMedium( 7,"C Frame" , 6,0,isxfld,sxmgmx
572 ,tmaxfd,stemax,deemax,epsil,stmin);
573 // INOX of cooling bus bars
574 AliMedium( 8,"Cooling bus",18,0,isxfld,sxmgmx
575 ,tmaxfd,stemax,deemax,epsil,stmin);
576 // Gas-mixture (Xe/CO2)
577 AliMedium( 9,"Gas-mix" ,10,1,isxfld,sxmgmx
578 ,tmaxfd,stemax,deemax,epsil,stmin);
580 AliMedium(10,"Nomex" ,12,0,isxfld,sxmgmx
581 ,tmaxfd,stemax,deemax,epsil,stmin);
583 AliMedium(11,"Glue" ,19,0,isxfld,sxmgmx
584 ,tmaxfd,stemax,deemax,epsil,stmin);
586 AliMedium(13,"G10-plates" ,12,0,isxfld,sxmgmx
587 ,tmaxfd,stemax,deemax,epsil,stmin);
589 AliMedium(14,"Water" ,13,0,isxfld,sxmgmx
590 ,tmaxfd,stemax,deemax,epsil,stmin);
591 // Rohacell (plexiglas) for the radiator
592 AliMedium(15,"Rohacell" ,14,0,isxfld,sxmgmx
593 ,tmaxfd,stemax,deemax,epsil,stmin);
595 AliMedium(16,"MCM-Al" , 1,0,isxfld,sxmgmx
596 ,tmaxfd,stemax,deemax,epsil,stmin);
598 AliMedium(17,"MCM-Sn" ,15,0,isxfld,sxmgmx
599 ,tmaxfd,stemax,deemax,epsil,stmin);
601 AliMedium(18,"MCM-Cu" , 5,0,isxfld,sxmgmx
602 ,tmaxfd,stemax,deemax,epsil,stmin);
604 AliMedium(19,"MCM-G10" ,12,0,isxfld,sxmgmx
605 ,tmaxfd,stemax,deemax,epsil,stmin);
606 // Si in readout chips
607 AliMedium(20,"Chip-Si" ,16,0,isxfld,sxmgmx
608 ,tmaxfd,stemax,deemax,epsil,stmin);
609 // Epoxy in readout chips
610 AliMedium(21,"Chip-Ep" ,17,0,isxfld,sxmgmx
611 ,tmaxfd,stemax,deemax,epsil,stmin);
613 AliMedium(22,"Conn-PE" , 3,0,isxfld,sxmgmx
614 ,tmaxfd,stemax,deemax,epsil,stmin);
616 AliMedium(23,"Chip-Cu" , 5,0,isxfld,sxmgmx
617 ,tmaxfd,stemax,deemax,epsil,stmin);
618 // Al of cooling pipes
619 AliMedium(24,"Cooling" , 1,0,isxfld,sxmgmx
620 ,tmaxfd,stemax,deemax,epsil,stmin);
622 AliMedium(25,"Serv-Cu" , 5,0,isxfld,sxmgmx
623 ,tmaxfd,stemax,deemax,epsil,stmin);
625 // Special tracking options for charged particles for XeCO2
626 gMC->Gstpar((* fIdtmed)[9],"DRAY",1.0);
627 gMC->Gstpar((* fIdtmed)[9],"STRA",1.0);
629 // Save the density values for the TRD absorbtion
636 //_____________________________________________________________________________
637 void AliTRD::DrawModule() const
640 // Draw a shaded view of the Transition Radiation Detector version 0
643 // Set everything unseen
644 gMC->Gsatt("*" ,"SEEN",-1);
646 // Set ALIC mother transparent
647 gMC->Gsatt("ALIC","SEEN", 0);
649 // Set the volumes visible
650 if (fGeometry->IsVersion() == 0) {
651 gMC->Gsatt("B071","SEEN", 0);
652 gMC->Gsatt("B074","SEEN", 0);
653 gMC->Gsatt("B075","SEEN", 0);
654 gMC->Gsatt("B077","SEEN", 0);
655 gMC->Gsatt("BTR1","SEEN", 0);
656 gMC->Gsatt("BTR2","SEEN", 0);
657 gMC->Gsatt("BTR3","SEEN", 0);
658 gMC->Gsatt("UTR1","SEEN", 0);
659 gMC->Gsatt("UTR2","SEEN", 0);
660 gMC->Gsatt("UTR3","SEEN", 0);
663 gMC->Gsatt("B071","SEEN", 0);
664 gMC->Gsatt("B074","SEEN", 0);
665 gMC->Gsatt("B075","SEEN", 0);
666 gMC->Gsatt("B077","SEEN", 0);
667 gMC->Gsatt("BTR1","SEEN", 0);
668 gMC->Gsatt("BTR2","SEEN", 0);
669 gMC->Gsatt("BTR3","SEEN", 0);
670 gMC->Gsatt("UTR1","SEEN", 0);
673 gMC->Gdopt("hide", "on");
674 gMC->Gdopt("shad", "on");
675 gMC->Gsatt("*", "fill", 7);
676 gMC->SetClipBox(".");
677 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
679 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
680 gMC->Gdhead(1111, "Transition Radiation Detector");
681 gMC->Gdman(18, 4, "MAN");
685 //_____________________________________________________________________________
686 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
689 // Distance between the mouse and the TRD detector on the screen
697 //_____________________________________________________________________________
701 // Initialize the TRD detector after the geometry has been created
704 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
706 if (fGeometry->IsVersion() != 1) {
707 AliError("Not a valid geometry");
712 //_____________________________________________________________________________
713 void AliTRD::LoadPoints(Int_t )
716 // Store x, y, z of all hits in memory.
717 // Hit originating from TR photons are given a different color
724 Int_t nhits = fHits->GetEntriesFast();
729 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
731 fPoints = new TObjArray(tracks);
736 Int_t *ntrkE = new Int_t[tracks];
737 Int_t *ntrkT = new Int_t[tracks];
738 Int_t *limiE = new Int_t[tracks];
739 Int_t *limiT = new Int_t[tracks];
740 Float_t **coorE = new Float_t*[tracks];
741 Float_t **coorT = new Float_t*[tracks];
742 for(Int_t i = 0; i < tracks; i++) {
751 AliTRDpoints *points = 0;
754 Int_t chunk = nhits / 4 + 1;
756 // Loop over all the hits and store their position
757 ahit = (AliTRDhit *) FirstHit(-1);
761 if (ahit->GetCharge() >= 0) {
763 trk = ahit->GetTrack();
764 if (ntrkE[trk] == limiE[trk]) {
765 // Initialise a new track
766 fp = new Float_t[3*(limiE[trk]+chunk)];
768 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
769 delete [] coorE[trk];
777 fp[3*ntrkE[trk] ] = ahit->X();
778 fp[3*ntrkE[trk]+1] = ahit->Y();
779 fp[3*ntrkE[trk]+2] = ahit->Z();
784 else if ((ahit->GetCharge() < 0) &&
787 trk = ahit->GetTrack();
788 if (ntrkT[trk] == limiT[trk]) {
789 // Initialise a new track
790 fp = new Float_t[3*(limiT[trk]+chunk)];
792 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
793 delete [] coorT[trk];
801 fp[3*ntrkT[trk] ] = ahit->X();
802 fp[3*ntrkT[trk]+1] = ahit->Y();
803 fp[3*ntrkT[trk]+2] = ahit->Z();
808 ahit = (AliTRDhit *) NextHit();
812 for (trk = 0; trk < tracks; ++trk) {
814 if (ntrkE[trk] || ntrkT[trk]) {
816 points = new AliTRDpoints();
817 points->SetDetector(this);
818 points->SetParticle(trk);
820 // Set the dEdx points
822 points->SetMarkerColor(kWhite); //PH This is the default color in TRD
823 points->SetMarkerSize(1); //PH Default size=1
824 points->SetPolyMarker(ntrkE[trk],coorE[trk],1); //PH Default style=1
825 delete [] coorE[trk];
829 // Set the TR photon points
831 points->SetTRpoints(ntrkT[trk],coorT[trk]);
832 delete [] coorT[trk];
836 fPoints->AddAt(points,trk);
851 //_____________________________________________________________________________
852 void AliTRD::MakeBranch(Option_t *option)
855 // Create Tree branches for the TRD digits.
858 Int_t buffersize = 4000;
859 Char_t branchname[15];
860 sprintf(branchname,"%s",GetName());
862 const Char_t *cD = strstr(option,"D");
864 AliDetector::MakeBranch(option);
869 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
874 //_____________________________________________________________________________
875 void AliTRD::ResetDigits()
878 // Reset number of digits and the digits array for this detector
889 //_____________________________________________________________________________
890 void AliTRD::SetTreeAddress()
893 // Set the branch addresses for the trees.
896 if (fLoader->TreeH() &&
898 fHits = new TClonesArray("AliTRDhit",405);
900 AliDetector::SetTreeAddress();
904 //_____________________________________________________________________________
905 AliTRD &AliTRD::operator=(const AliTRD &trd)
908 // Assignment operator
912 ((AliTRD &) trd).Copy(*this);