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"
59 //_____________________________________________________________________________
63 // Default constructor
80 //_____________________________________________________________________________
81 AliTRD::AliTRD(const char *name, const char *title)
82 : AliDetector(name,title)
85 // Standard constructor for the TRD
88 // Check that FRAME is there otherwise we have no place where to
90 AliModule* frame = gAlice->GetModule("FRAME");
92 Error("Ctor","TRD needs FRAME to be present\n");
96 // Define the TRD geometry
97 if ((frame->IsVersion() == 0) ||
98 (frame->IsVersion() == 1)) {
99 fGeometry = new AliTRDgeometryFull();
102 Error("Ctor","Could not find valid FRAME version\n");
107 TDirectory* saveDir = gDirectory;
108 gAlice->GetRunLoader()->CdGAFile();
109 fGeometry->Write("TRDgeometry");
112 // Allocate the hit array
113 fHits = new TClonesArray("AliTRDhit" ,405);
114 gAlice->GetMCApp()->AddHitList(fHits);
116 // Allocate the digits array
127 SetMarkerColor(kWhite);
131 //_____________________________________________________________________________
132 AliTRD::AliTRD(const AliTRD &trd):AliDetector(trd)
138 ((AliTRD &) trd).Copy(*this);
142 //_____________________________________________________________________________
162 //_____________________________________________________________________________
163 void AliTRD::Hits2Digits()
168 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
169 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
172 digitizer.InitDetector();
174 if (!fLoader->TreeH()) fLoader->LoadHits("read");
175 fLoader->LoadDigits("recreate");
176 AliRunLoader* runLoader = fLoader->GetRunLoader();
178 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
179 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
180 digitizer.MakeDigits();
181 digitizer.WriteDigits();
184 fLoader->UnloadHits();
185 fLoader->UnloadDigits();
189 //_____________________________________________________________________________
190 void AliTRD::Hits2SDigits()
193 // Create summable digits
196 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
197 // For the summable digits
198 digitizer.SetSDigits(kTRUE);
199 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
202 digitizer.InitDetector();
204 if (!fLoader->TreeH()) fLoader->LoadHits("read");
205 fLoader->LoadSDigits("recreate");
206 AliRunLoader* runLoader = fLoader->GetRunLoader();
208 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
209 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
210 digitizer.MakeDigits();
211 digitizer.WriteDigits();
214 fLoader->UnloadHits();
215 fLoader->UnloadSDigits();
219 //_____________________________________________________________________________
220 AliDigitizer* AliTRD::CreateDigitizer(AliRunDigitizer* manager) const
223 // Creates a new digitizer object
226 return new AliTRDdigitizer(manager);
230 //_____________________________________________________________________________
231 void AliTRD::SDigits2Digits()
234 // Create final digits from summable digits
237 // Create the TRD digitizer
238 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
239 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
242 digitizer.SetEvent(gAlice->GetEvNumber());
245 digitizer.InitDetector();
247 // Read the s-digits via digits manager
248 AliTRDdigitsManager sdigitsManager;
250 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
251 sdigitsManager.SetSDigits(kTRUE);
252 sdigitsManager.CreateArrays();
254 if (!fLoader->TreeS())
255 if (fLoader->LoadSDigits("read"))
257 Error("SDigits2Digits","Error while reading SDigits for event %d",gAlice->GetEvNumber());
260 if (!fLoader->TreeS()) return;
262 sdigitsManager.ReadDigits(fLoader->TreeS());
264 // Add the s-digits to the input list
265 digitizer.AddSDigitsManager(&sdigitsManager);
267 // Convert the s-digits to normal digits
268 digitizer.SDigits2Digits();
271 if (!fLoader->TreeD()) fLoader->MakeTree("D");
272 if (digitizer.MakeBranch(fLoader->TreeD())){
273 digitizer.WriteDigits();
278 //_____________________________________________________________________________
279 void AliTRD::Digits2Raw()
282 // convert digits of the current event to raw data
285 fLoader->LoadDigits();
286 TTree* digits = fLoader->TreeD();
288 Error("Digits2Raw", "no digits tree");
292 AliTRDrawData rawWriter;
293 // rawWriter.SetDebug(2);
294 if (!rawWriter.Digits2Raw(digits)) {
295 Error("AliTRD::Digits2Raw","The raw writer could not load the digits tree");
298 fLoader->UnloadDigits();
302 //_____________________________________________________________________________
303 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
307 // Add a hit for the TRD
310 TClonesArray &lhits = *fHits;
311 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
316 hit->SetAmplification();
324 //_____________________________________________________________________________
325 void AliTRD::BuildGeometry()
328 // Create the ROOT TNode geometry for the TRD
335 Float_t zmax1, zmax2;
339 const Int_t kColorTRD = 46;
341 // Find the top node alice
342 top = gAlice->GetGeometry()->GetNode("alice");
344 if (fDisplayType == 0) {
346 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
347 rmin = AliTRDgeometry::Rmin();
348 rmax = AliTRDgeometry::Rmax();
349 pgon->DefineSection(0,-AliTRDgeometry::Zmax1(),rmax,rmax);
350 pgon->DefineSection(1,-AliTRDgeometry::Zmax2(),rmin,rmax);
351 pgon->DefineSection(2, AliTRDgeometry::Zmax2(),rmin,rmax);
352 pgon->DefineSection(3, AliTRDgeometry::Zmax1(),rmax,rmax);
354 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
355 node->SetLineColor(kColorTRD);
359 else if (fDisplayType == 1) {
363 Float_t slope = (AliTRDgeometry::Zmax1() - AliTRDgeometry::Zmax2())
364 / (AliTRDgeometry::Rmax() - AliTRDgeometry::Rmin());
366 rmin = AliTRDgeometry::Rmin() + AliTRDgeometry::CraHght();
367 rmax = rmin + AliTRDgeometry::CdrHght();
369 Float_t thickness = rmin - AliTRDgeometry::Rmin();
370 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
371 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
373 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
375 sprintf(name,"S_TR1%d",iPlan);
376 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
377 pgon->DefineSection(0,-zmax1,rmax,rmax);
378 pgon->DefineSection(1,-zmax2,rmin,rmax);
379 pgon->DefineSection(2, zmax2,rmin,rmax);
380 pgon->DefineSection(3, zmax1,rmax,rmax);
382 node = new TNode("TRD","TRD",name,0,0,0,"");
383 node->SetLineColor(kColorTRD);
386 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
387 rmin = rmin + height;
388 rmax = rmax + height;
389 zmax1 = zmax1 + slope * height;
390 zmax2 = zmax2 + slope * height;
394 thickness += AliTRDgeometry::DrThick();
395 rmin = AliTRDgeometry::Rmin() + thickness;
396 rmax = rmin + AliTRDgeometry::AmThick();
397 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
398 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
400 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
402 sprintf(name,"S_TR2%d",iPlan);
403 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
404 pgon->DefineSection(0,-zmax1,rmax,rmax);
405 pgon->DefineSection(1,-zmax2,rmin,rmax);
406 pgon->DefineSection(2, zmax2,rmin,rmax);
407 pgon->DefineSection(3, zmax1,rmax,rmax);
409 node = new TNode("TRD","TRD",name,0,0,0,"");
410 node->SetLineColor(kColorTRD);
413 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
414 rmin = rmin + height;
415 rmax = rmax + height;
416 zmax1 = zmax1 + slope * height;
417 zmax2 = zmax2 + slope * height;
425 //_____________________________________________________________________________
426 void AliTRD::Copy(TObject &trd) const
432 ((AliTRD &) trd).fGeometry = fGeometry;
433 ((AliTRD &) trd).fGasDensity = fGasDensity;
434 ((AliTRD &) trd).fFoilDensity = fFoilDensity;
435 ((AliTRD &) trd).fDrawTR = fDrawTR;
436 ((AliTRD &) trd).fDisplayType = fDisplayType;
438 //AliDetector::Copy(trd);
442 //_____________________________________________________________________________
443 void AliTRD::CreateGeometry()
446 // Creates the volumes for the TRD chambers
449 // Check that FRAME is there otherwise we have no place where to put the TRD
450 AliModule* frame = gAlice->GetModule("FRAME");
452 AliFatal("The TRD needs the FRAME to be defined first");
455 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
459 //_____________________________________________________________________________
460 void AliTRD::CreateMaterials()
463 // Create the materials for the TRD
466 Int_t isxfld = gAlice->Field()->Integ();
467 Float_t sxmgmx = gAlice->Field()->Max();
469 // For polyethilene (CH2)
470 Float_t ape[2] = { 12.011 , 1.0079 };
471 Float_t zpe[2] = { 6.0 , 1.0 };
472 Float_t wpe[2] = { 1.0 , 2.0 };
475 // For mylar (C5H4O2)
476 Float_t amy[3] = { 12.011 , 1.0079, 15.9994 };
477 Float_t zmy[3] = { 6.0 , 1.0 , 8.0 };
478 Float_t wmy[3] = { 5.0 , 4.0 , 2.0 };
482 Float_t aco[2] = { 12.011 , 15.9994 };
483 Float_t zco[2] = { 6.0 , 8.0 };
484 Float_t wco[2] = { 1.0 , 2.0 };
485 Float_t dco = 0.001977;
488 Float_t awa[2] = { 1.0079, 15.9994 };
489 Float_t zwa[2] = { 1.0 , 8.0 };
490 Float_t wwa[2] = { 2.0 , 1.0 };
493 // For isobutane (C4H10)
494 Float_t ais[2] = { 12.011 , 1.0079 };
495 Float_t zis[2] = { 6.0 , 1.0 };
496 Float_t wis[2] = { 4.0 , 10.0 };
497 Float_t dis = 0.00267;
499 // For plexiglas (C5H8O2)
500 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
501 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
502 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
505 // For epoxy (C18H19O3)
506 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
507 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
508 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
509 Float_t dEpoxy = 1.8 ;
512 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
513 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
514 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
515 Float_t dAir = 1.20479E-3;
518 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
519 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
520 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
523 // For Xe/CO2-gas-mixture
524 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
525 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
526 Float_t wXeCO2[3] = { 0.85 , 0.0375 , 0.1125 };
527 // Xe-content of the Xe/CO2-mixture (85% / 15%)
529 Float_t dxe = 0.00549;
530 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
532 // General tracking parameter
533 Float_t tmaxfd = -10.;
534 Float_t stemax = -1e10;
535 Float_t deemax = -0.1;
536 Float_t epsil = 1e-4;
537 Float_t stmin = -0.001;
539 //////////////////////////////////////////////////////////////////////////
541 //////////////////////////////////////////////////////////////////////////
543 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
544 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
545 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
546 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
547 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
548 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
551 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
552 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
553 AliMixture(7, "Mylar", amy, zmy, dmy, -3, wmy );
554 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
555 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
556 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, 3, wXeCO2);
557 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
558 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
559 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
560 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
562 //////////////////////////////////////////////////////////////////////////
563 // Tracking Media Parameters
564 //////////////////////////////////////////////////////////////////////////
567 AliMedium(1, "Al Frame", 1, 0, isxfld, sxmgmx
568 , tmaxfd, stemax, deemax, epsil, stmin);
570 AliMedium(2, "Air", 2, 0, isxfld, sxmgmx
571 , tmaxfd, stemax, deemax, epsil, stmin);
573 AliMedium(3, "Radiator", 3, 0, isxfld, sxmgmx
574 , tmaxfd, stemax, deemax, epsil, stmin);
576 AliMedium(4, "Xe", 4, 1, isxfld, sxmgmx
577 , tmaxfd, stemax, deemax, epsil, stmin);
579 AliMedium(5, "Padplane", 5, 1, isxfld, sxmgmx
580 , tmaxfd, stemax, deemax, epsil, stmin);
582 AliMedium(6, "Readout", 1, 0, isxfld, sxmgmx
583 , tmaxfd, stemax, deemax, epsil, stmin);
585 AliMedium(7, "C Frame", 6, 0, isxfld, sxmgmx
586 , tmaxfd, stemax, deemax, epsil, stmin);
588 AliMedium(8, "Mylar", 7, 0, isxfld, sxmgmx
589 , tmaxfd, stemax, deemax, epsil, stmin);
590 // Gas-mixture (Xe/CO2)
591 AliMedium(9, "Gas-mix", 10, 1, isxfld, sxmgmx
592 , tmaxfd, stemax, deemax, epsil, stmin);
593 // Nomex-honeycomb (use carbon for the time being)
594 AliMedium(10, "Nomex", 6, 0, isxfld, sxmgmx
595 , tmaxfd, stemax, deemax, epsil, stmin);
596 // Kapton foils (use Mylar for the time being)
597 AliMedium(11, "Kapton", 7, 0, isxfld, sxmgmx
598 , tmaxfd, stemax, deemax, epsil, stmin);
599 // Gas-filling of the radiator
600 AliMedium(12, "CO2", 8, 0, isxfld, sxmgmx
601 , tmaxfd, stemax, deemax, epsil, stmin);
603 AliMedium(13, "G10-plates",12, 0, isxfld, sxmgmx
604 , tmaxfd, stemax, deemax, epsil, stmin);
606 AliMedium(14, "Water", 13, 0, isxfld, sxmgmx
607 , tmaxfd, stemax, deemax, epsil, stmin);
608 // Rohacell (plexiglas) for the radiator
609 AliMedium(15, "Rohacell", 14, 0, isxfld, sxmgmx
610 , tmaxfd, stemax, deemax, epsil, stmin);
612 AliMedium(16, "MCM-Al" , 1, 0, isxfld, sxmgmx
613 , tmaxfd, stemax, deemax, epsil, stmin);
615 AliMedium(17, "MCM-Sn" , 15, 0, isxfld, sxmgmx
616 , tmaxfd, stemax, deemax, epsil, stmin);
618 AliMedium(18, "MCM-Cu" , 5, 0, isxfld, sxmgmx
619 , tmaxfd, stemax, deemax, epsil, stmin);
621 AliMedium(19, "MCM-G10" , 12, 0, isxfld, sxmgmx
622 , tmaxfd, stemax, deemax, epsil, stmin);
623 // Si in readout chips
624 AliMedium(20, "Chip-Si" , 16, 0, isxfld, sxmgmx
625 , tmaxfd, stemax, deemax, epsil, stmin);
626 // Epoxy in readout chips
627 AliMedium(21, "Chip-Ep" , 17, 0, isxfld, sxmgmx
628 , tmaxfd, stemax, deemax, epsil, stmin);
630 AliMedium(22, "Conn-PE" , 3, 0, isxfld, sxmgmx
631 , tmaxfd, stemax, deemax, epsil, stmin);
633 AliMedium(23, "Chip-Cu" , 5, 0, isxfld, sxmgmx
634 , tmaxfd, stemax, deemax, epsil, stmin);
635 // Al of cooling pipes
636 AliMedium(24, "Cooling" , 1, 0, isxfld, sxmgmx
637 , tmaxfd, stemax, deemax, epsil, stmin);
639 AliMedium(25, "Serv-Cu" , 5, 0, isxfld, sxmgmx
640 , tmaxfd, stemax, deemax, epsil, stmin);
642 // Save the density values for the TRD absorbtion
648 //_____________________________________________________________________________
649 void AliTRD::DrawModule() const
652 // Draw a shaded view of the Transition Radiation Detector version 0
655 // Set everything unseen
656 gMC->Gsatt("*" ,"SEEN",-1);
658 // Set ALIC mother transparent
659 gMC->Gsatt("ALIC","SEEN", 0);
661 // Set the volumes visible
662 if (fGeometry->IsVersion() == 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);
671 gMC->Gsatt("UTR2","SEEN", 0);
672 gMC->Gsatt("UTR3","SEEN", 0);
675 gMC->Gsatt("B071","SEEN", 0);
676 gMC->Gsatt("B074","SEEN", 0);
677 gMC->Gsatt("B075","SEEN", 0);
678 gMC->Gsatt("B077","SEEN", 0);
679 gMC->Gsatt("BTR1","SEEN", 0);
680 gMC->Gsatt("BTR2","SEEN", 0);
681 gMC->Gsatt("BTR3","SEEN", 0);
682 gMC->Gsatt("UTR1","SEEN", 0);
683 if (fGeometry->GetPHOShole())
684 gMC->Gsatt("UTR2","SEEN", 0);
685 if (fGeometry->GetRICHhole())
686 gMC->Gsatt("UTR3","SEEN", 0);
688 // gMC->Gsatt("UCII","SEEN", 0);
689 // gMC->Gsatt("UCIM","SEEN", 0);
690 // gMC->Gsatt("UCIO","SEEN", 0);
691 // gMC->Gsatt("UL02","SEEN", 1);
692 // gMC->Gsatt("UL05","SEEN", 1);
693 // gMC->Gsatt("UL06","SEEN", 1);
695 gMC->Gdopt("hide", "on");
696 gMC->Gdopt("shad", "on");
697 gMC->Gsatt("*", "fill", 7);
698 gMC->SetClipBox(".");
699 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
701 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
702 gMC->Gdhead(1111, "Transition Radiation Detector");
703 gMC->Gdman(18, 4, "MAN");
707 //_____________________________________________________________________________
708 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
711 // Distance between the mouse and the TRD detector on the screen
718 //_____________________________________________________________________________
722 // Initialize the TRD detector after the geometry has been created
725 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
727 if (fGeometry->IsVersion() == 1) {
728 AliInfo("Full geometry version initialized");
729 if (fGeometry->GetPHOShole())
730 AliInfo("Leave space in front of PHOS free");
731 if (fGeometry->GetRICHhole())
732 AliInfo("Leave space in front of RICH free");
735 AliError("Not a valid geometry");
740 //_____________________________________________________________________________
741 void AliTRD::LoadPoints(Int_t )
744 // Store x, y, z of all hits in memory.
745 // Hit originating from TR photons are given a different color
749 // AliDetector::LoadPoints(track);
753 if (fHits == 0) return;
755 Int_t nhits = fHits->GetEntriesFast();
756 if (nhits == 0) return;
758 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
759 if (fPoints == 0) fPoints = new TObjArray(tracks);
763 Int_t *ntrkE = new Int_t[tracks];
764 Int_t *ntrkT = new Int_t[tracks];
765 Int_t *limiE = new Int_t[tracks];
766 Int_t *limiT = new Int_t[tracks];
767 Float_t **coorE = new Float_t*[tracks];
768 Float_t **coorT = new Float_t*[tracks];
769 for(Int_t i = 0; i < tracks; i++) {
778 AliTRDpoints *points = 0;
781 Int_t chunk = nhits / 4 + 1;
783 // Loop over all the hits and store their position
784 ahit = (AliTRDhit *) FirstHit(-1);
788 if (ahit->GetCharge() >= 0) {
790 trk = ahit->GetTrack();
791 if (ntrkE[trk] == limiE[trk]) {
792 // Initialise a new track
793 fp = new Float_t[3*(limiE[trk]+chunk)];
795 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
796 delete [] coorE[trk];
804 fp[3*ntrkE[trk] ] = ahit->X();
805 fp[3*ntrkE[trk]+1] = ahit->Y();
806 fp[3*ntrkE[trk]+2] = ahit->Z();
811 else if ((ahit->GetCharge() < 0) && (fDrawTR)) {
813 trk = ahit->GetTrack();
814 if (ntrkT[trk] == limiT[trk]) {
815 // Initialise a new track
816 fp = new Float_t[3*(limiT[trk]+chunk)];
818 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
819 delete [] coorT[trk];
827 fp[3*ntrkT[trk] ] = ahit->X();
828 fp[3*ntrkT[trk]+1] = ahit->Y();
829 fp[3*ntrkT[trk]+2] = ahit->Z();
834 ahit = (AliTRDhit *) NextHit();
838 for (trk = 0; trk < tracks; ++trk) {
840 if (ntrkE[trk] || ntrkT[trk]) {
842 points = new AliTRDpoints();
843 points->SetDetector(this);
844 points->SetParticle(trk);
846 // Set the dEdx points
848 points->SetMarkerColor(GetMarkerColor());
849 points->SetMarkerSize(GetMarkerSize());
850 points->SetPolyMarker(ntrkE[trk],coorE[trk],GetMarkerStyle());
851 delete [] coorE[trk];
855 // Set the TR photon points
857 points->SetTRpoints(ntrkT[trk],coorT[trk]);
858 delete [] coorT[trk];
862 fPoints->AddAt(points,trk);
877 //_____________________________________________________________________________
878 void AliTRD::MakeBranch(Option_t* option)
881 // Create Tree branches for the TRD digits.
884 Int_t buffersize = 4000;
885 Char_t branchname[15];
886 sprintf(branchname,"%s",GetName());
888 const char *cD = strstr(option,"D");
890 AliDetector::MakeBranch(option);
892 if (fDigits && gAlice->TreeD() && cD) {
893 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
898 //_____________________________________________________________________________
899 void AliTRD::ResetDigits()
902 // Reset number of digits and the digits array for this detector
906 if (fDigits) fDigits->Clear();
910 //_____________________________________________________________________________
911 void AliTRD::SetTreeAddress()
914 // Set the branch addresses for the trees.
917 if ( fLoader->TreeH() && (fHits == 0x0)) {
918 fHits = new TClonesArray("AliTRDhit",405);
920 AliDetector::SetTreeAddress();
924 //_____________________________________________________________________________
925 void AliTRD::SetPHOShole()
928 // Selects a geometry with a hole in front of the PHOS
931 fGeometry->SetPHOShole();
935 //_____________________________________________________________________________
936 void AliTRD::SetRICHhole()
939 // Selects a geometry with a hole in front of the RICH
942 fGeometry->SetRICHhole();
946 //_____________________________________________________________________________
947 AliTRD &AliTRD::operator=(const AliTRD &trd)
950 // Assignment operator
953 if (this != &trd) ((AliTRD &) trd).Copy(*this);