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 "AliTRDgeometry.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 AliTRDgeometry();
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 //_____________________________________________________________________________
167 //_____________________________________________________________________________
168 void AliTRD::Hits2Digits()
174 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
175 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
178 digitizer.InitDetector();
180 if (!fLoader->TreeH()) fLoader->LoadHits("read");
181 fLoader->LoadDigits("recreate");
182 AliRunLoader* runLoader = fLoader->GetRunLoader();
184 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
185 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
186 digitizer.MakeDigits();
187 digitizer.WriteDigits();
190 fLoader->UnloadHits();
191 fLoader->UnloadDigits();
195 //_____________________________________________________________________________
196 void AliTRD::Hits2SDigits()
199 // Create summable digits
202 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
203 // For the summable digits
204 digitizer.SetSDigits(kTRUE);
205 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
208 digitizer.InitDetector();
210 if (!fLoader->TreeH()) fLoader->LoadHits("read");
211 fLoader->LoadSDigits("recreate");
212 AliRunLoader* runLoader = fLoader->GetRunLoader();
214 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
215 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
216 digitizer.MakeDigits();
217 digitizer.WriteDigits();
220 fLoader->UnloadHits();
221 fLoader->UnloadSDigits();
225 //_____________________________________________________________________________
226 AliDigitizer* AliTRD::CreateDigitizer(AliRunDigitizer* manager) const
229 // Creates a new digitizer object
232 return new AliTRDdigitizer(manager);
236 //_____________________________________________________________________________
237 void AliTRD::SDigits2Digits()
240 // Create final digits from summable digits
243 // Create the TRD digitizer
244 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
245 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
248 digitizer.SetEvent(gAlice->GetEvNumber());
251 digitizer.InitDetector();
253 // Read the s-digits via digits manager
254 AliTRDdigitsManager sdigitsManager;
256 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
257 sdigitsManager.SetSDigits(kTRUE);
258 sdigitsManager.CreateArrays();
260 if (!fLoader->TreeS())
261 if (fLoader->LoadSDigits("read"))
263 Error("SDigits2Digits","Error while reading SDigits for event %d",gAlice->GetEvNumber());
266 if (!fLoader->TreeS()) return;
268 sdigitsManager.ReadDigits(fLoader->TreeS());
270 // Add the s-digits to the input list
271 digitizer.AddSDigitsManager(&sdigitsManager);
273 // Convert the s-digits to normal digits
274 digitizer.SDigits2Digits();
277 if (!fLoader->TreeD()) fLoader->MakeTree("D");
278 if (digitizer.MakeBranch(fLoader->TreeD())){
279 digitizer.WriteDigits();
284 //_____________________________________________________________________________
285 void AliTRD::Digits2Raw()
288 // convert digits of the current event to raw data
291 fLoader->LoadDigits();
292 TTree* digits = fLoader->TreeD();
294 Error("Digits2Raw", "no digits tree");
298 AliTRDrawData rawWriter;
299 // rawWriter.SetDebug(2);
300 if (!rawWriter.Digits2Raw(digits)) {
301 Error("AliTRD::Digits2Raw","The raw writer could not load the digits tree");
304 fLoader->UnloadDigits();
308 //_____________________________________________________________________________
309 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
313 // Add a hit for the TRD
316 TClonesArray &lhits = *fHits;
317 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
322 hit->SetAmplification();
330 //_____________________________________________________________________________
331 void AliTRD::BuildGeometry()
334 // Create the ROOT TNode geometry for the TRD
341 Float_t zmax1, zmax2;
345 const Int_t kColorTRD = 46;
347 // Find the top node alice
348 top = gAlice->GetGeometry()->GetNode("alice");
350 if (fDisplayType == 0) {
352 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
353 rmin = AliTRDgeometry::Rmin();
354 rmax = AliTRDgeometry::Rmax();
355 pgon->DefineSection(0,-AliTRDgeometry::Zmax1(),rmax,rmax);
356 pgon->DefineSection(1,-AliTRDgeometry::Zmax2(),rmin,rmax);
357 pgon->DefineSection(2, AliTRDgeometry::Zmax2(),rmin,rmax);
358 pgon->DefineSection(3, AliTRDgeometry::Zmax1(),rmax,rmax);
360 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
361 node->SetLineColor(kColorTRD);
365 else if (fDisplayType == 1) {
369 Float_t slope = (AliTRDgeometry::Zmax1() - AliTRDgeometry::Zmax2())
370 / (AliTRDgeometry::Rmax() - AliTRDgeometry::Rmin());
372 rmin = AliTRDgeometry::Rmin() + AliTRDgeometry::CraHght();
373 rmax = rmin + AliTRDgeometry::CdrHght();
375 Float_t thickness = rmin - AliTRDgeometry::Rmin();
376 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
377 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
379 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
381 sprintf(name,"S_TR1%d",iPlan);
382 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
383 pgon->DefineSection(0,-zmax1,rmax,rmax);
384 pgon->DefineSection(1,-zmax2,rmin,rmax);
385 pgon->DefineSection(2, zmax2,rmin,rmax);
386 pgon->DefineSection(3, zmax1,rmax,rmax);
388 node = new TNode("TRD","TRD",name,0,0,0,"");
389 node->SetLineColor(kColorTRD);
392 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
393 rmin = rmin + height;
394 rmax = rmax + height;
395 zmax1 = zmax1 + slope * height;
396 zmax2 = zmax2 + slope * height;
400 thickness += AliTRDgeometry::DrThick();
401 rmin = AliTRDgeometry::Rmin() + thickness;
402 rmax = rmin + AliTRDgeometry::AmThick();
403 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
404 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
406 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
408 sprintf(name,"S_TR2%d",iPlan);
409 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
410 pgon->DefineSection(0,-zmax1,rmax,rmax);
411 pgon->DefineSection(1,-zmax2,rmin,rmax);
412 pgon->DefineSection(2, zmax2,rmin,rmax);
413 pgon->DefineSection(3, zmax1,rmax,rmax);
415 node = new TNode("TRD","TRD",name,0,0,0,"");
416 node->SetLineColor(kColorTRD);
419 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
420 rmin = rmin + height;
421 rmax = rmax + height;
422 zmax1 = zmax1 + slope * height;
423 zmax2 = zmax2 + slope * height;
431 //_____________________________________________________________________________
432 void AliTRD::Copy(TObject &trd) const
438 ((AliTRD &) trd).fGeometry = fGeometry;
439 ((AliTRD &) trd).fGasDensity = fGasDensity;
440 ((AliTRD &) trd).fFoilDensity = fFoilDensity;
441 ((AliTRD &) trd).fDrawTR = fDrawTR;
442 ((AliTRD &) trd).fDisplayType = fDisplayType;
444 //AliDetector::Copy(trd);
448 //_____________________________________________________________________________
449 void AliTRD::CreateGeometry()
452 // Creates the volumes for the TRD chambers
455 // Check that FRAME is there otherwise we have no place where to put the TRD
456 AliModule* frame = gAlice->GetModule("FRAME");
458 AliFatal("The TRD needs the FRAME to be defined first");
461 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
465 //_____________________________________________________________________________
466 void AliTRD::CreateMaterials()
469 // Create the materials for the TRD
472 Int_t isxfld = gAlice->Field()->Integ();
473 Float_t sxmgmx = gAlice->Field()->Max();
475 // For polyethilene (CH2)
476 Float_t ape[2] = { 12.011 , 1.0079 };
477 Float_t zpe[2] = { 6.0 , 1.0 };
478 Float_t wpe[2] = { 1.0 , 2.0 };
481 // For mylar (C5H4O2)
482 Float_t amy[3] = { 12.011 , 1.0079, 15.9994 };
483 Float_t zmy[3] = { 6.0 , 1.0 , 8.0 };
484 Float_t wmy[3] = { 5.0 , 4.0 , 2.0 };
488 Float_t aco[2] = { 12.011 , 15.9994 };
489 Float_t zco[2] = { 6.0 , 8.0 };
490 Float_t wco[2] = { 1.0 , 2.0 };
491 Float_t dco = 0.00186;
494 Float_t awa[2] = { 1.0079, 15.9994 };
495 Float_t zwa[2] = { 1.0 , 8.0 };
496 Float_t wwa[2] = { 2.0 , 1.0 };
499 // For isobutane (C4H10)
500 Float_t ais[2] = { 12.011 , 1.0079 };
501 Float_t zis[2] = { 6.0 , 1.0 };
502 Float_t wis[2] = { 4.0 , 10.0 };
503 Float_t dis = 0.00267;
505 // For plexiglas (C5H8O2)
506 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
507 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
508 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
511 // For epoxy (C18H19O3)
512 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
513 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
514 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
515 Float_t dEpoxy = 1.8 ;
518 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
519 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
520 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
521 Float_t dAir = 1.20479E-3;
524 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
525 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
526 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
529 // For Xe/CO2-gas-mixture
530 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
531 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
532 Float_t wXeCO2[3] = { 0.85 , 0.0375 , 0.1125 };
533 // Xe-content of the Xe/CO2-mixture (85% / 15%)
535 Float_t dxe = 0.00549;
536 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
538 // General tracking parameter
539 Float_t tmaxfd = -10.;
540 Float_t stemax = -1e10;
541 Float_t deemax = -0.1;
542 Float_t epsil = 1e-4;
543 Float_t stmin = -0.001;
545 //////////////////////////////////////////////////////////////////////////
547 //////////////////////////////////////////////////////////////////////////
549 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
550 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
551 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
552 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
553 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
554 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
557 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
558 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
559 AliMixture(7, "Mylar", amy, zmy, dmy, -3, wmy );
560 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
561 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
562 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, 3, wXeCO2);
563 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
564 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
565 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
566 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
568 //////////////////////////////////////////////////////////////////////////
569 // Tracking Media Parameters
570 //////////////////////////////////////////////////////////////////////////
573 AliMedium(1, "Al Frame", 1, 0, isxfld, sxmgmx
574 , tmaxfd, stemax, deemax, epsil, stmin);
576 AliMedium(2, "Air", 2, 0, isxfld, sxmgmx
577 , tmaxfd, stemax, deemax, epsil, stmin);
579 AliMedium(3, "Radiator", 3, 0, isxfld, sxmgmx
580 , tmaxfd, stemax, deemax, epsil, stmin);
582 AliMedium(4, "Xe", 4, 1, isxfld, sxmgmx
583 , tmaxfd, stemax, deemax, epsil, stmin);
585 AliMedium(5, "Padplane", 5, 1, isxfld, sxmgmx
586 , tmaxfd, stemax, deemax, epsil, stmin);
588 AliMedium(6, "Readout", 1, 0, isxfld, sxmgmx
589 , tmaxfd, stemax, deemax, epsil, stmin);
591 AliMedium(7, "C Frame", 6, 0, isxfld, sxmgmx
592 , tmaxfd, stemax, deemax, epsil, stmin);
594 AliMedium(8, "Mylar", 7, 0, isxfld, sxmgmx
595 , tmaxfd, stemax, deemax, epsil, stmin);
596 // Gas-mixture (Xe/CO2)
597 AliMedium(9, "Gas-mix", 10, 1, isxfld, sxmgmx
598 , tmaxfd, stemax, deemax, epsil, stmin);
599 // Nomex-honeycomb (use carbon for the time being)
600 AliMedium(10, "Nomex", 6, 0, isxfld, sxmgmx
601 , tmaxfd, stemax, deemax, epsil, stmin);
602 // Kapton foils (use Mylar for the time being)
603 AliMedium(11, "Kapton", 7, 0, isxfld, sxmgmx
604 , tmaxfd, stemax, deemax, epsil, stmin);
605 // Gas-filling of the radiator
606 AliMedium(12, "CO2", 8, 0, isxfld, sxmgmx
607 , tmaxfd, stemax, deemax, epsil, stmin);
609 AliMedium(13, "G10-plates",12, 0, isxfld, sxmgmx
610 , tmaxfd, stemax, deemax, epsil, stmin);
612 AliMedium(14, "Water", 13, 0, isxfld, sxmgmx
613 , tmaxfd, stemax, deemax, epsil, stmin);
614 // Rohacell (plexiglas) for the radiator
615 AliMedium(15, "Rohacell", 14, 0, isxfld, sxmgmx
616 , tmaxfd, stemax, deemax, epsil, stmin);
618 AliMedium(16, "MCM-Al" , 1, 0, isxfld, sxmgmx
619 , tmaxfd, stemax, deemax, epsil, stmin);
621 AliMedium(17, "MCM-Sn" , 15, 0, isxfld, sxmgmx
622 , tmaxfd, stemax, deemax, epsil, stmin);
624 AliMedium(18, "MCM-Cu" , 5, 0, isxfld, sxmgmx
625 , tmaxfd, stemax, deemax, epsil, stmin);
627 AliMedium(19, "MCM-G10" , 12, 0, isxfld, sxmgmx
628 , tmaxfd, stemax, deemax, epsil, stmin);
629 // Si in readout chips
630 AliMedium(20, "Chip-Si" , 16, 0, isxfld, sxmgmx
631 , tmaxfd, stemax, deemax, epsil, stmin);
632 // Epoxy in readout chips
633 AliMedium(21, "Chip-Ep" , 17, 0, isxfld, sxmgmx
634 , tmaxfd, stemax, deemax, epsil, stmin);
636 AliMedium(22, "Conn-PE" , 3, 0, isxfld, sxmgmx
637 , tmaxfd, stemax, deemax, epsil, stmin);
639 AliMedium(23, "Chip-Cu" , 5, 0, isxfld, sxmgmx
640 , tmaxfd, stemax, deemax, epsil, stmin);
641 // Al of cooling pipes
642 AliMedium(24, "Cooling" , 1, 0, isxfld, sxmgmx
643 , tmaxfd, stemax, deemax, epsil, stmin);
645 AliMedium(25, "Serv-Cu" , 5, 0, isxfld, sxmgmx
646 , tmaxfd, stemax, deemax, epsil, stmin);
648 // Save the density values for the TRD absorbtion
654 //_____________________________________________________________________________
655 void AliTRD::DrawModule() const
658 // Draw a shaded view of the Transition Radiation Detector version 0
661 // Set everything unseen
662 gMC->Gsatt("*" ,"SEEN",-1);
664 // Set ALIC mother transparent
665 gMC->Gsatt("ALIC","SEEN", 0);
667 // Set the volumes visible
668 if (fGeometry->IsVersion() == 0) {
669 gMC->Gsatt("B071","SEEN", 0);
670 gMC->Gsatt("B074","SEEN", 0);
671 gMC->Gsatt("B075","SEEN", 0);
672 gMC->Gsatt("B077","SEEN", 0);
673 gMC->Gsatt("BTR1","SEEN", 0);
674 gMC->Gsatt("BTR2","SEEN", 0);
675 gMC->Gsatt("BTR3","SEEN", 0);
676 gMC->Gsatt("UTR1","SEEN", 0);
677 gMC->Gsatt("UTR2","SEEN", 0);
678 gMC->Gsatt("UTR3","SEEN", 0);
681 gMC->Gsatt("B071","SEEN", 0);
682 gMC->Gsatt("B074","SEEN", 0);
683 gMC->Gsatt("B075","SEEN", 0);
684 gMC->Gsatt("B077","SEEN", 0);
685 gMC->Gsatt("BTR1","SEEN", 0);
686 gMC->Gsatt("BTR2","SEEN", 0);
687 gMC->Gsatt("BTR3","SEEN", 0);
688 gMC->Gsatt("UTR1","SEEN", 0);
691 gMC->Gdopt("hide", "on");
692 gMC->Gdopt("shad", "on");
693 gMC->Gsatt("*", "fill", 7);
694 gMC->SetClipBox(".");
695 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
697 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
698 gMC->Gdhead(1111, "Transition Radiation Detector");
699 gMC->Gdman(18, 4, "MAN");
703 //_____________________________________________________________________________
704 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
707 // Distance between the mouse and the TRD detector on the screen
714 //_____________________________________________________________________________
718 // Initialize the TRD detector after the geometry has been created
721 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
723 if (fGeometry->IsVersion() != 1) {
724 AliError("Not a valid geometry");
729 //_____________________________________________________________________________
730 void AliTRD::LoadPoints(Int_t )
733 // Store x, y, z of all hits in memory.
734 // Hit originating from TR photons are given a different color
737 if (fHits == 0) return;
739 Int_t nhits = fHits->GetEntriesFast();
740 if (nhits == 0) return;
742 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
743 if (fPoints == 0) fPoints = new TObjArray(tracks);
747 Int_t *ntrkE = new Int_t[tracks];
748 Int_t *ntrkT = new Int_t[tracks];
749 Int_t *limiE = new Int_t[tracks];
750 Int_t *limiT = new Int_t[tracks];
751 Float_t **coorE = new Float_t*[tracks];
752 Float_t **coorT = new Float_t*[tracks];
753 for(Int_t i = 0; i < tracks; i++) {
762 AliTRDpoints *points = 0;
765 Int_t chunk = nhits / 4 + 1;
767 // Loop over all the hits and store their position
768 ahit = (AliTRDhit *) FirstHit(-1);
772 if (ahit->GetCharge() >= 0) {
774 trk = ahit->GetTrack();
775 if (ntrkE[trk] == limiE[trk]) {
776 // Initialise a new track
777 fp = new Float_t[3*(limiE[trk]+chunk)];
779 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
780 delete [] coorE[trk];
788 fp[3*ntrkE[trk] ] = ahit->X();
789 fp[3*ntrkE[trk]+1] = ahit->Y();
790 fp[3*ntrkE[trk]+2] = ahit->Z();
795 else if ((ahit->GetCharge() < 0) && (fDrawTR)) {
797 trk = ahit->GetTrack();
798 if (ntrkT[trk] == limiT[trk]) {
799 // Initialise a new track
800 fp = new Float_t[3*(limiT[trk]+chunk)];
802 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
803 delete [] coorT[trk];
811 fp[3*ntrkT[trk] ] = ahit->X();
812 fp[3*ntrkT[trk]+1] = ahit->Y();
813 fp[3*ntrkT[trk]+2] = ahit->Z();
818 ahit = (AliTRDhit *) NextHit();
822 for (trk = 0; trk < tracks; ++trk) {
824 if (ntrkE[trk] || ntrkT[trk]) {
826 points = new AliTRDpoints();
827 points->SetDetector(this);
828 points->SetParticle(trk);
830 // Set the dEdx points
832 points->SetMarkerColor(GetMarkerColor());
833 points->SetMarkerSize(GetMarkerSize());
834 points->SetPolyMarker(ntrkE[trk],coorE[trk],GetMarkerStyle());
835 delete [] coorE[trk];
839 // Set the TR photon points
841 points->SetTRpoints(ntrkT[trk],coorT[trk]);
842 delete [] coorT[trk];
846 fPoints->AddAt(points,trk);
861 //_____________________________________________________________________________
862 void AliTRD::MakeBranch(Option_t* option)
865 // Create Tree branches for the TRD digits.
868 Int_t buffersize = 4000;
869 Char_t branchname[15];
870 sprintf(branchname,"%s",GetName());
872 const char *cD = strstr(option,"D");
874 AliDetector::MakeBranch(option);
876 if (fDigits && gAlice->TreeD() && cD) {
877 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
882 //_____________________________________________________________________________
883 void AliTRD::ResetDigits()
886 // Reset number of digits and the digits array for this detector
890 if (fDigits) fDigits->Clear();
894 //_____________________________________________________________________________
895 void AliTRD::SetTreeAddress()
898 // Set the branch addresses for the trees.
901 if ( fLoader->TreeH() && (fHits == 0x0)) {
902 fHits = new TClonesArray("AliTRDhit",405);
904 AliDetector::SetTreeAddress();
908 //_____________________________________________________________________________
909 AliTRD &AliTRD::operator=(const AliTRD &trd)
912 // Assignment operator
915 if (this != &trd) ((AliTRD &) trd).Copy(*this);