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>
29 #include <TClonesArray.h>
31 #include <TGeometry.h>
32 #include <TLorentzVector.h>
36 #include <TParticle.h>
39 #include <TVirtualMC.h>
43 #include "AliLoader.h"
48 #include "AliTrackReference.h"
51 #include "AliTRDdigit.h"
52 #include "AliTRDdigitizer.h"
53 #include "AliTRDdigitsManager.h"
54 #include "AliTRDgeometry.h"
55 #include "AliTRDhit.h"
56 #include "AliTRDpoints.h"
57 #include "AliTRDrawData.h"
58 #include "AliTRDSimParam.h"
59 #include "AliTRDRecParam.h"
60 #include "AliTRDCommonParam.h"
61 #include "AliTRDcalibDB.h"
65 //_____________________________________________________________________________
75 // Default constructor
80 //_____________________________________________________________________________
81 AliTRD::AliTRD(const char *name, const char *title)
82 :AliDetector(name,title)
90 // Standard constructor for the TRD
93 // Check that FRAME is there otherwise we have no place where to put TRD
94 AliModule *frame = gAlice->GetModule("FRAME");
96 AliError("TRD needs FRAME to be present\n");
100 // Define the TRD geometry
101 if ((frame->IsVersion() == 0) ||
102 (frame->IsVersion() == 1)) {
103 fGeometry = new AliTRDgeometry();
106 AliError("Could not find valid FRAME version\n");
111 TDirectory *saveDir = gDirectory;
112 gAlice->GetRunLoader()->CdGAFile();
113 fGeometry->Write("TRDgeometry");
116 // Allocate the hit array
117 fHits = new TClonesArray("AliTRDhit",405);
118 gAlice->GetMCApp()->AddHitList(fHits);
120 //PH SetMarkerColor(kWhite);
124 //_____________________________________________________________________________
143 //_____________________________________________________________________________
144 void AliTRD::Hits2Digits()
150 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
151 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
154 digitizer.InitDetector();
156 if (!fLoader->TreeH()) {
157 fLoader->LoadHits("read");
159 fLoader->LoadDigits("recreate");
161 AliRunLoader *runLoader = fLoader->GetRunLoader();
163 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
164 runLoader->GetEvent(iEvent);
165 digitizer.Open(runLoader,iEvent);
166 digitizer.MakeDigits();
167 digitizer.WriteDigits();
170 fLoader->UnloadHits();
171 fLoader->UnloadDigits();
175 //_____________________________________________________________________________
176 void AliTRD::Hits2SDigits()
179 // Create summable digits
182 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
183 // For the summable digits
184 digitizer.SetSDigits(kTRUE);
185 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
188 digitizer.InitDetector();
190 if (!fLoader->TreeH()) {
191 fLoader->LoadHits("read");
193 fLoader->LoadSDigits("recreate");
195 AliRunLoader *runLoader = fLoader->GetRunLoader();
197 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
198 runLoader->GetEvent(iEvent);
199 digitizer.Open(runLoader,iEvent);
200 digitizer.MakeDigits();
201 digitizer.WriteDigits();
204 fLoader->UnloadHits();
205 fLoader->UnloadSDigits();
209 //_____________________________________________________________________________
210 AliDigitizer *AliTRD::CreateDigitizer(AliRunDigitizer *manager) const
213 // Creates a new digitizer object
216 return new AliTRDdigitizer(manager);
220 //_____________________________________________________________________________
221 void AliTRD::SDigits2Digits()
224 // Create final digits from summable digits
227 // Create the TRD digitizer
228 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
229 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
232 digitizer.SetEvent(gAlice->GetEvNumber());
235 digitizer.InitDetector();
237 // Read the s-digits via digits manager
238 AliTRDdigitsManager sdigitsManager;
240 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
241 sdigitsManager.SetSDigits(kTRUE);
242 sdigitsManager.CreateArrays();
244 if (!fLoader->TreeS()) {
245 if (fLoader->LoadSDigits("read")) {
249 if (!fLoader->TreeS()) {
250 AliError(Form("Error while reading SDigits for event %d",gAlice->GetEvNumber()));
254 sdigitsManager.ReadDigits(fLoader->TreeS());
256 // Add the s-digits to the input list
257 digitizer.AddSDigitsManager(&sdigitsManager);
259 // Convert the s-digits to normal digits
260 digitizer.SDigits2Digits();
263 if (!fLoader->TreeD()) {
264 fLoader->MakeTree("D");
266 if (digitizer.MakeBranch(fLoader->TreeD())){
267 digitizer.WriteDigits();
272 //_____________________________________________________________________________
273 void AliTRD::Digits2Raw()
276 // Convert digits of the current event to raw data
279 fLoader->LoadDigits();
280 TTree *digits = fLoader->TreeD();
282 AliError("No digits tree");
286 AliTRDrawData rawWriter;
287 if (!rawWriter.Digits2Raw(digits)) {
288 AliError("The raw writer could not load the digits tree");
291 fLoader->UnloadDigits();
295 //_____________________________________________________________________________
296 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
297 , Float_t time, Bool_t inDrift)
300 // Add a hit for the TRD
303 TClonesArray &lhits = *fHits;
304 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt
315 hit->SetAmplification();
324 //_____________________________________________________________________________
325 void AliTRD::BuildGeometry()
328 // Create the ROOT TNode geometry for the TRD
335 // The dimensions of the TRD super module
336 const Float_t kRmin = 291.0;
337 const Float_t kRmax = 369.0;
338 const Float_t kZmax1 = 378.35;
339 const Float_t kZmax2 = 302.0;
348 const Int_t kColorTRD = 46;
350 // Find the top node alice
351 top = gAlice->GetGeometry()->GetNode("alice");
353 if (fDisplayType == 0) {
355 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
358 pgon->DefineSection(0,-kZmax1,rmax,rmax);
359 pgon->DefineSection(1,-kZmax2,rmin,rmax);
360 pgon->DefineSection(2, kZmax2,rmin,rmax);
361 pgon->DefineSection(3, kZmax1,rmax,rmax);
363 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
364 node->SetLineColor(kColorTRD);
368 else if (fDisplayType == 1) {
372 Float_t slope = (kZmax1 - kZmax2) / (kRmax - kRmin);
374 rmin = kRmin + AliTRDgeometry::CraHght();
375 rmax = rmin + AliTRDgeometry::CdrHght();
377 Float_t thickness = rmin - kRmin;
378 zmax2 = kZmax2 + slope * thickness;
379 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
381 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
383 sprintf(name,"S_TR1%d",iPlan);
384 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
385 pgon->DefineSection(0,-zmax1,rmax,rmax);
386 pgon->DefineSection(1,-zmax2,rmin,rmax);
387 pgon->DefineSection(2, zmax2,rmin,rmax);
388 pgon->DefineSection(3, zmax1,rmax,rmax);
390 node = new TNode("TRD","TRD",name,0,0,0,"");
391 node->SetLineColor(kColorTRD);
394 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
395 rmin = rmin + height;
396 rmax = rmax + height;
397 zmax1 = zmax1 + slope * height;
398 zmax2 = zmax2 + slope * height;
402 thickness += AliTRDgeometry::DrThick();
403 rmin = kRmin + thickness;
404 rmax = rmin + AliTRDgeometry::AmThick();
405 zmax2 = kZmax2 + slope * thickness;
406 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
408 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
410 sprintf(name,"S_TR2%d",iPlan);
411 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
412 pgon->DefineSection(0,-zmax1,rmax,rmax);
413 pgon->DefineSection(1,-zmax2,rmin,rmax);
414 pgon->DefineSection(2, zmax2,rmin,rmax);
415 pgon->DefineSection(3, zmax1,rmax,rmax);
417 node = new TNode("TRD","TRD",name,0,0,0,"");
418 node->SetLineColor(kColorTRD);
421 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
422 rmin = rmin + height;
423 rmax = rmax + height;
424 zmax1 = zmax1 + slope * height;
425 zmax2 = zmax2 + slope * height;
433 //_____________________________________________________________________________
434 void AliTRD::CreateGeometry()
437 // Creates the volumes for the TRD chambers
440 // Check that FRAME is there otherwise we have no place where to put the TRD
441 AliModule *frame = gAlice->GetModule("FRAME");
443 AliFatal("The TRD needs the FRAME to be defined first");
446 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
450 //_____________________________________________________________________________
451 void AliTRD::CreateMaterials()
454 // Create the materials for the TRD
457 Int_t isxfld = gAlice->Field()->Integ();
458 Float_t sxmgmx = gAlice->Field()->Max();
460 // For polyethilene (CH2)
461 Float_t ape[2] = { 12.011 , 1.0079 };
462 Float_t zpe[2] = { 6.0 , 1.0 };
463 Float_t wpe[2] = { 1.0 , 2.0 };
467 Float_t aco[2] = { 12.011 , 15.9994 };
468 Float_t zco[2] = { 6.0 , 8.0 };
469 Float_t wco[2] = { 1.0 , 2.0 };
470 Float_t dco = 0.00186;
473 Float_t awa[2] = { 1.0079, 15.9994 };
474 Float_t zwa[2] = { 1.0 , 8.0 };
475 Float_t wwa[2] = { 2.0 , 1.0 };
478 // For isobutane (C4H10)
479 Float_t ais[2] = { 12.011 , 1.0079 };
480 Float_t zis[2] = { 6.0 , 1.0 };
481 Float_t wis[2] = { 4.0 , 10.0 };
482 Float_t dis = 0.00267;
484 // For plexiglas (C5H8O2)
485 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
486 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
487 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
490 // For epoxy (C18H19O3)
491 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
492 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
493 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
494 Float_t dEpoxy = 1.8 ;
496 // For Araldite, low density epoxy (C18H19O3)
497 Float_t aAral[3] = { 15.9994, 1.0079, 12.011 };
498 Float_t zAral[3] = { 8.0 , 1.0 , 6.0 };
499 Float_t wAral[3] = { 3.0 , 19.0 , 18.0 };
500 Float_t dAral = 1.05;
503 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
504 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
505 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
506 Float_t dAir = 1.20479e-03;
509 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
510 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
511 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
514 // For Xe/CO2-gas-mixture
515 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
516 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
517 Float_t wXeCO2[3] = { 8.5 , 1.5 , 3.0 };
518 // Xe-content of the Xe/CO2-mixture (85% / 15%)
520 Float_t dxe = 0.00549;
521 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
523 // General tracking parameter
524 Float_t tmaxfd = -10.0;
525 Float_t stemax = -1.0e10;
526 Float_t deemax = -0.1;
527 Float_t epsil = 1.0e-4;
528 Float_t stmin = -0.001;
530 //////////////////////////////////////////////////////////////////////////
532 //////////////////////////////////////////////////////////////////////////
534 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
535 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
536 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
537 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
538 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
539 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
540 AliMaterial(18, "Fe" , 55.85, 26.0, 7.87 , 1.76, 14.8);
543 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
544 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
545 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
546 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
547 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, -3, wXeCO2);
548 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
549 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
550 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
551 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
552 AliMixture(19,"Araldite", aAral, zAral, dAral, -3, wAral );
554 //////////////////////////////////////////////////////////////////////////
555 // Tracking Media Parameters
556 //////////////////////////////////////////////////////////////////////////
559 AliMedium( 1,"Al Frame" , 1,0,isxfld,sxmgmx
560 ,tmaxfd,stemax,deemax,epsil,stmin);
562 AliMedium( 2,"Air" , 2,0,isxfld,sxmgmx
563 ,tmaxfd,stemax,deemax,epsil,stmin);
565 AliMedium( 3,"Wires" , 5,0,isxfld,sxmgmx
566 ,tmaxfd,stemax,deemax,epsil,stmin);
567 // All other ROB materials (caps, etc.)
568 AliMedium( 4,"ROB Other" , 5,0,isxfld,sxmgmx
569 ,tmaxfd,stemax,deemax,epsil,stmin);
571 AliMedium( 5,"Padplane" , 5,1,isxfld,sxmgmx
572 ,tmaxfd,stemax,deemax,epsil,stmin);
574 AliMedium( 6,"Readout" , 5,0,isxfld,sxmgmx
575 ,tmaxfd,stemax,deemax,epsil,stmin);
577 AliMedium( 7,"C Frame" , 6,0,isxfld,sxmgmx
578 ,tmaxfd,stemax,deemax,epsil,stmin);
579 // INOX of cooling bus bars
580 AliMedium( 8,"Cooling bus",18,0,isxfld,sxmgmx
581 ,tmaxfd,stemax,deemax,epsil,stmin);
582 // Gas-mixture (Xe/CO2)
583 AliMedium( 9,"Gas-mix" ,10,1,isxfld,sxmgmx
584 ,tmaxfd,stemax,deemax,epsil,stmin);
586 AliMedium(10,"Nomex" ,12,0,isxfld,sxmgmx
587 ,tmaxfd,stemax,deemax,epsil,stmin);
589 AliMedium(11,"Glue" ,19,0,isxfld,sxmgmx
590 ,tmaxfd,stemax,deemax,epsil,stmin);
592 AliMedium(13,"G10-plates" ,12,0,isxfld,sxmgmx
593 ,tmaxfd,stemax,deemax,epsil,stmin);
595 AliMedium(14,"Water" ,13,0,isxfld,sxmgmx
596 ,tmaxfd,stemax,deemax,epsil,stmin);
597 // Rohacell (plexiglas) for the radiator
598 AliMedium(15,"Rohacell" ,14,0,isxfld,sxmgmx
599 ,tmaxfd,stemax,deemax,epsil,stmin);
601 AliMedium(16,"MCM-Al" , 1,0,isxfld,sxmgmx
602 ,tmaxfd,stemax,deemax,epsil,stmin);
604 AliMedium(17,"MCM-Sn" ,15,0,isxfld,sxmgmx
605 ,tmaxfd,stemax,deemax,epsil,stmin);
607 AliMedium(18,"MCM-Cu" , 5,0,isxfld,sxmgmx
608 ,tmaxfd,stemax,deemax,epsil,stmin);
610 AliMedium(19,"MCM-G10" ,12,0,isxfld,sxmgmx
611 ,tmaxfd,stemax,deemax,epsil,stmin);
612 // Si in readout chips
613 AliMedium(20,"Chip-Si" ,16,0,isxfld,sxmgmx
614 ,tmaxfd,stemax,deemax,epsil,stmin);
615 // Epoxy in readout chips
616 AliMedium(21,"Chip-Ep" ,17,0,isxfld,sxmgmx
617 ,tmaxfd,stemax,deemax,epsil,stmin);
619 AliMedium(22,"Conn-PE" , 3,0,isxfld,sxmgmx
620 ,tmaxfd,stemax,deemax,epsil,stmin);
622 AliMedium(23,"Chip-Cu" , 5,0,isxfld,sxmgmx
623 ,tmaxfd,stemax,deemax,epsil,stmin);
624 // Al of cooling pipes
625 AliMedium(24,"Cooling" , 1,0,isxfld,sxmgmx
626 ,tmaxfd,stemax,deemax,epsil,stmin);
628 AliMedium(25,"Serv-Cu" , 5,0,isxfld,sxmgmx
629 ,tmaxfd,stemax,deemax,epsil,stmin);
631 // Save the density values for the TRD absorbtion
638 //_____________________________________________________________________________
639 void AliTRD::DrawModule() const
642 // Draw a shaded view of the Transition Radiation Detector version 0
645 // Set everything unseen
646 gMC->Gsatt("*" ,"SEEN",-1);
648 // Set ALIC mother transparent
649 gMC->Gsatt("ALIC","SEEN", 0);
651 // Set the volumes visible
652 if (fGeometry->IsVersion() == 0) {
653 gMC->Gsatt("B071","SEEN", 0);
654 gMC->Gsatt("B074","SEEN", 0);
655 gMC->Gsatt("B075","SEEN", 0);
656 gMC->Gsatt("B077","SEEN", 0);
657 gMC->Gsatt("BTR1","SEEN", 0);
658 gMC->Gsatt("BTR2","SEEN", 0);
659 gMC->Gsatt("BTR3","SEEN", 0);
660 gMC->Gsatt("UTR1","SEEN", 0);
661 gMC->Gsatt("UTR2","SEEN", 0);
662 gMC->Gsatt("UTR3","SEEN", 0);
665 gMC->Gsatt("B071","SEEN", 0);
666 gMC->Gsatt("B074","SEEN", 0);
667 gMC->Gsatt("B075","SEEN", 0);
668 gMC->Gsatt("B077","SEEN", 0);
669 gMC->Gsatt("BTR1","SEEN", 0);
670 gMC->Gsatt("BTR2","SEEN", 0);
671 gMC->Gsatt("BTR3","SEEN", 0);
672 gMC->Gsatt("UTR1","SEEN", 0);
675 gMC->Gdopt("hide", "on");
676 gMC->Gdopt("shad", "on");
677 gMC->Gsatt("*", "fill", 7);
678 gMC->SetClipBox(".");
679 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
681 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
682 gMC->Gdhead(1111, "Transition Radiation Detector");
683 gMC->Gdman(18, 4, "MAN");
687 //_____________________________________________________________________________
688 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
691 // Distance between the mouse and the TRD detector on the screen
699 //_____________________________________________________________________________
703 // Initialize the TRD detector after the geometry has been created
706 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
708 if (fGeometry->IsVersion() != 1) {
709 AliError("Not a valid geometry");
711 // Special tracking options for charged particles for XeCO2
712 gMC->Gstpar((* fIdtmed)[9],"DRAY",1.0);
713 gMC->Gstpar((* fIdtmed)[9],"STRA",1.0);
717 //_____________________________________________________________________________
718 void AliTRD::LoadPoints(Int_t )
721 // Store x, y, z of all hits in memory.
722 // Hit originating from TR photons are given a different color
729 Int_t nhits = fHits->GetEntriesFast();
734 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
736 fPoints = new TObjArray(tracks);
741 Int_t *ntrkE = new Int_t[tracks];
742 Int_t *ntrkT = new Int_t[tracks];
743 Int_t *limiE = new Int_t[tracks];
744 Int_t *limiT = new Int_t[tracks];
745 Float_t **coorE = new Float_t*[tracks];
746 Float_t **coorT = new Float_t*[tracks];
747 for(Int_t i = 0; i < tracks; i++) {
756 AliTRDpoints *points = 0;
759 Int_t chunk = nhits / 4 + 1;
761 // Loop over all the hits and store their position
762 ahit = (AliTRDhit *) FirstHit(-1);
766 if (ahit->GetCharge() >= 0) {
768 trk = ahit->GetTrack();
769 if (ntrkE[trk] == limiE[trk]) {
770 // Initialise a new track
771 fp = new Float_t[3*(limiE[trk]+chunk)];
773 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
774 delete [] coorE[trk];
782 fp[3*ntrkE[trk] ] = ahit->X();
783 fp[3*ntrkE[trk]+1] = ahit->Y();
784 fp[3*ntrkE[trk]+2] = ahit->Z();
789 else if ((ahit->GetCharge() < 0) &&
792 trk = ahit->GetTrack();
793 if (ntrkT[trk] == limiT[trk]) {
794 // Initialise a new track
795 fp = new Float_t[3*(limiT[trk]+chunk)];
797 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
798 delete [] coorT[trk];
806 fp[3*ntrkT[trk] ] = ahit->X();
807 fp[3*ntrkT[trk]+1] = ahit->Y();
808 fp[3*ntrkT[trk]+2] = ahit->Z();
813 ahit = (AliTRDhit *) NextHit();
817 for (trk = 0; trk < tracks; ++trk) {
819 if (ntrkE[trk] || ntrkT[trk]) {
821 points = new AliTRDpoints();
822 points->SetDetector(this);
823 points->SetParticle(trk);
825 // Set the dEdx points
827 points->SetMarkerColor(kWhite); //PH This is the default color in TRD
828 points->SetMarkerSize(1); //PH Default size=1
829 points->SetPolyMarker(ntrkE[trk],coorE[trk],1); //PH Default style=1
830 delete [] coorE[trk];
834 // Set the TR photon points
836 points->SetTRpoints(ntrkT[trk],coorT[trk]);
837 delete [] coorT[trk];
841 fPoints->AddAt(points,trk);
856 //_____________________________________________________________________________
857 void AliTRD::MakeBranch(Option_t *option)
860 // Create Tree branches for the TRD digits.
863 Int_t buffersize = 4000;
864 Char_t branchname[15];
865 sprintf(branchname,"%s",GetName());
867 const Char_t *cD = strstr(option,"D");
869 AliDetector::MakeBranch(option);
874 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
879 //_____________________________________________________________________________
880 void AliTRD::ResetDigits()
883 // Reset number of digits and the digits array for this detector
894 //_____________________________________________________________________________
895 void AliTRD::SetTreeAddress()
898 // Set the branch addresses for the trees.
901 if (fLoader->TreeH() &&
903 fHits = new TClonesArray("AliTRDhit",405);
905 AliDetector::SetTreeAddress();
909 //_____________________________________________________________________________
910 AliTRD &AliTRD::operator=(const AliTRD &trd)
913 // Assignment operator
917 ((AliTRD &) trd).Copy(*this);