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"
46 #include "AliTRDdigit.h"
47 #include "AliTRDdigitizer.h"
48 #include "AliTRDdigitsManager.h"
49 #include "AliTRDgeometryFull.h"
50 #include "AliTRDhit.h"
51 #include "AliTRDpoints.h"
52 #include "AliTRDrawData.h"
53 #include "AliTrackReference.h"
58 //_____________________________________________________________________________
62 // Default constructor
79 //_____________________________________________________________________________
80 AliTRD::AliTRD(const char *name, const char *title)
81 : AliDetector(name,title)
84 // Standard constructor for the TRD
87 // Check that FRAME is there otherwise we have no place where to
89 AliModule* frame = gAlice->GetModule("FRAME");
91 Error("Ctor","TRD needs FRAME to be present\n");
95 // Define the TRD geometry
96 if ((frame->IsVersion() == 0) ||
97 (frame->IsVersion() == 1)) {
98 fGeometry = new AliTRDgeometryFull();
101 Error("Ctor","Could not find valid FRAME version\n");
106 TDirectory* saveDir = gDirectory;
107 gAlice->GetRunLoader()->CdGAFile();
108 fGeometry->Write("TRDgeometry");
111 // Allocate the hit array
112 fHits = new TClonesArray("AliTRDhit" ,405);
113 gAlice->GetMCApp()->AddHitList(fHits);
115 // Allocate the digits array
126 SetMarkerColor(kWhite);
130 //_____________________________________________________________________________
131 AliTRD::AliTRD(const AliTRD &trd):AliDetector(trd)
137 ((AliTRD &) trd).Copy(*this);
141 //_____________________________________________________________________________
161 //_____________________________________________________________________________
162 void AliTRD::Hits2Digits()
167 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
168 digitizer.SetDebug(GetDebug());
171 digitizer.InitDetector();
173 if (!fLoader->TreeH()) fLoader->LoadHits("read");
174 fLoader->LoadDigits("recreate");
175 AliRunLoader* runLoader = fLoader->GetRunLoader();
177 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
178 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
179 digitizer.MakeDigits();
180 digitizer.WriteDigits();
183 fLoader->UnloadHits();
184 fLoader->UnloadDigits();
188 //_____________________________________________________________________________
189 void AliTRD::Hits2SDigits()
192 // Create summable digits
195 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
196 // For the summable digits
197 digitizer.SetSDigits(kTRUE);
198 digitizer.SetDebug(GetDebug());
201 digitizer.InitDetector();
203 if (!fLoader->TreeH()) fLoader->LoadHits("read");
204 fLoader->LoadSDigits("recreate");
205 AliRunLoader* runLoader = fLoader->GetRunLoader();
207 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
208 digitizer.Open(runLoader->GetFileName().Data(), iEvent);
209 digitizer.MakeDigits();
210 digitizer.WriteDigits();
213 fLoader->UnloadHits();
214 fLoader->UnloadSDigits();
218 //_____________________________________________________________________________
219 AliDigitizer* AliTRD::CreateDigitizer(AliRunDigitizer* manager) const
222 // Creates a new digitizer object
225 return new AliTRDdigitizer(manager);
229 //_____________________________________________________________________________
230 void AliTRD::SDigits2Digits()
233 // Create final digits from summable digits
236 // Create the TRD digitizer
237 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
238 digitizer.SetDebug(GetDebug());
241 digitizer.SetEvent(gAlice->GetEvNumber());
244 digitizer.InitDetector();
246 // Read the s-digits via digits manager
247 AliTRDdigitsManager sdigitsManager;
249 sdigitsManager.SetDebug(GetDebug());
250 sdigitsManager.SetSDigits(kTRUE);
251 sdigitsManager.CreateArrays();
253 if (!fLoader->TreeS())
254 if (fLoader->LoadSDigits("read"))
256 Error("SDigits2Digits","Error while reading SDigits for event %d",gAlice->GetEvNumber());
259 if (!fLoader->TreeS()) return;
261 sdigitsManager.ReadDigits(fLoader->TreeS());
263 // Add the s-digits to the input list
264 digitizer.AddSDigitsManager(&sdigitsManager);
266 // Convert the s-digits to normal digits
267 digitizer.SDigits2Digits();
270 if (!fLoader->TreeD()) fLoader->MakeTree("D");
271 if (digitizer.MakeBranch(fLoader->TreeD())){
272 digitizer.WriteDigits();
277 //_____________________________________________________________________________
278 void AliTRD::Digits2Raw()
281 // convert digits of the current event to raw data
284 fLoader->LoadDigits();
285 TTree* digits = fLoader->TreeD();
287 Error("Digits2Raw", "no digits tree");
291 AliTRDrawData rawWriter;
292 // rawWriter.SetDebug(2);
293 if (!rawWriter.Digits2Raw(digits)) {
294 Error("AliTRD::Digits2Raw","The raw writer could not load the digits tree");
297 fLoader->UnloadDigits();
301 //_____________________________________________________________________________
302 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
306 // Add a hit for the TRD
309 TClonesArray &lhits = *fHits;
310 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits,q);
315 hit->SetAmplification();
323 //_____________________________________________________________________________
324 void AliTRD::BuildGeometry()
327 // Create the ROOT TNode geometry for the TRD
334 Float_t zmax1, zmax2;
338 const Int_t kColorTRD = 46;
340 // Find the top node alice
341 top = gAlice->GetGeometry()->GetNode("alice");
343 if (fDisplayType == 0) {
345 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
346 rmin = AliTRDgeometry::Rmin();
347 rmax = AliTRDgeometry::Rmax();
348 pgon->DefineSection(0,-AliTRDgeometry::Zmax1(),rmax,rmax);
349 pgon->DefineSection(1,-AliTRDgeometry::Zmax2(),rmin,rmax);
350 pgon->DefineSection(2, AliTRDgeometry::Zmax2(),rmin,rmax);
351 pgon->DefineSection(3, AliTRDgeometry::Zmax1(),rmax,rmax);
353 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
354 node->SetLineColor(kColorTRD);
358 else if (fDisplayType == 1) {
362 Float_t slope = (AliTRDgeometry::Zmax1() - AliTRDgeometry::Zmax2())
363 / (AliTRDgeometry::Rmax() - AliTRDgeometry::Rmin());
365 rmin = AliTRDgeometry::Rmin() + AliTRDgeometry::CraHght();
366 rmax = rmin + AliTRDgeometry::CdrHght();
368 Float_t thickness = rmin - AliTRDgeometry::Rmin();
369 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
370 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
372 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
374 sprintf(name,"S_TR1%d",iPlan);
375 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
376 pgon->DefineSection(0,-zmax1,rmax,rmax);
377 pgon->DefineSection(1,-zmax2,rmin,rmax);
378 pgon->DefineSection(2, zmax2,rmin,rmax);
379 pgon->DefineSection(3, zmax1,rmax,rmax);
381 node = new TNode("TRD","TRD",name,0,0,0,"");
382 node->SetLineColor(kColorTRD);
385 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
386 rmin = rmin + height;
387 rmax = rmax + height;
388 zmax1 = zmax1 + slope * height;
389 zmax2 = zmax2 + slope * height;
393 thickness += AliTRDgeometry::DrThick();
394 rmin = AliTRDgeometry::Rmin() + thickness;
395 rmax = rmin + AliTRDgeometry::AmThick();
396 zmax2 = AliTRDgeometry::Zmax2() + slope * thickness;
397 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
399 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
401 sprintf(name,"S_TR2%d",iPlan);
402 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
403 pgon->DefineSection(0,-zmax1,rmax,rmax);
404 pgon->DefineSection(1,-zmax2,rmin,rmax);
405 pgon->DefineSection(2, zmax2,rmin,rmax);
406 pgon->DefineSection(3, zmax1,rmax,rmax);
408 node = new TNode("TRD","TRD",name,0,0,0,"");
409 node->SetLineColor(kColorTRD);
412 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
413 rmin = rmin + height;
414 rmax = rmax + height;
415 zmax1 = zmax1 + slope * height;
416 zmax2 = zmax2 + slope * height;
424 //_____________________________________________________________________________
425 void AliTRD::Copy(TObject &trd) const
431 ((AliTRD &) trd).fGeometry = fGeometry;
432 ((AliTRD &) trd).fGasDensity = fGasDensity;
433 ((AliTRD &) trd).fFoilDensity = fFoilDensity;
434 ((AliTRD &) trd).fDrawTR = fDrawTR;
435 ((AliTRD &) trd).fDisplayType = fDisplayType;
437 //AliDetector::Copy(trd);
441 //_____________________________________________________________________________
442 void AliTRD::CreateGeometry()
445 // Creates the volumes for the TRD chambers
448 // Check that FRAME is there otherwise we have no place where to put the TRD
449 AliModule* frame = gAlice->GetModule("FRAME");
451 printf(" The TRD needs the FRAME to be defined first\n");
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
728 printf("\n%s: ",ClassName());
729 for (i = 0; i < 35; i++) printf("*");
730 printf(" TRD_INIT ");
731 for (i = 0; i < 35; i++) printf("*");
735 if (fGeometry->IsVersion() == 1) {
736 printf("%s: Full geometry version initialized\n",ClassName());
737 if (fGeometry->GetPHOShole())
738 printf("%s: Leave space in front of PHOS free\n",ClassName());
739 if (fGeometry->GetRICHhole())
740 printf("%s: Leave space in front of RICH free\n",ClassName());
743 printf("%s: Not a valid geometry\n",ClassName());
748 //_____________________________________________________________________________
749 void AliTRD::LoadPoints(Int_t )
752 // Store x, y, z of all hits in memory.
753 // Hit originating from TR photons are given a different color
757 // AliDetector::LoadPoints(track);
761 if (fHits == 0) return;
763 Int_t nhits = fHits->GetEntriesFast();
764 if (nhits == 0) return;
766 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
767 if (fPoints == 0) fPoints = new TObjArray(tracks);
771 Int_t *ntrkE = new Int_t[tracks];
772 Int_t *ntrkT = new Int_t[tracks];
773 Int_t *limiE = new Int_t[tracks];
774 Int_t *limiT = new Int_t[tracks];
775 Float_t **coorE = new Float_t*[tracks];
776 Float_t **coorT = new Float_t*[tracks];
777 for(Int_t i = 0; i < tracks; i++) {
786 AliTRDpoints *points = 0;
789 Int_t chunk = nhits / 4 + 1;
791 // Loop over all the hits and store their position
792 ahit = (AliTRDhit *) FirstHit(-1);
796 if (ahit->GetCharge() >= 0) {
798 trk = ahit->GetTrack();
799 if (ntrkE[trk] == limiE[trk]) {
800 // Initialise a new track
801 fp = new Float_t[3*(limiE[trk]+chunk)];
803 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
804 delete [] coorE[trk];
812 fp[3*ntrkE[trk] ] = ahit->X();
813 fp[3*ntrkE[trk]+1] = ahit->Y();
814 fp[3*ntrkE[trk]+2] = ahit->Z();
819 else if ((ahit->GetCharge() < 0) && (fDrawTR)) {
821 trk = ahit->GetTrack();
822 if (ntrkT[trk] == limiT[trk]) {
823 // Initialise a new track
824 fp = new Float_t[3*(limiT[trk]+chunk)];
826 memcpy(fp,coorT[trk],sizeof(Float_t)*3*limiT[trk]);
827 delete [] coorT[trk];
835 fp[3*ntrkT[trk] ] = ahit->X();
836 fp[3*ntrkT[trk]+1] = ahit->Y();
837 fp[3*ntrkT[trk]+2] = ahit->Z();
842 ahit = (AliTRDhit *) NextHit();
846 for (trk = 0; trk < tracks; ++trk) {
848 if (ntrkE[trk] || ntrkT[trk]) {
850 points = new AliTRDpoints();
851 points->SetDetector(this);
852 points->SetParticle(trk);
854 // Set the dEdx points
856 points->SetMarkerColor(GetMarkerColor());
857 points->SetMarkerSize(GetMarkerSize());
858 points->SetPolyMarker(ntrkE[trk],coorE[trk],GetMarkerStyle());
859 delete [] coorE[trk];
863 // Set the TR photon points
865 points->SetTRpoints(ntrkT[trk],coorT[trk]);
866 delete [] coorT[trk];
870 fPoints->AddAt(points,trk);
885 //_____________________________________________________________________________
886 void AliTRD::MakeBranch(Option_t* option)
889 // Create Tree branches for the TRD digits.
892 Int_t buffersize = 4000;
893 Char_t branchname[15];
894 sprintf(branchname,"%s",GetName());
896 const char *cD = strstr(option,"D");
898 AliDetector::MakeBranch(option);
900 if (fDigits && gAlice->TreeD() && cD) {
901 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
906 //_____________________________________________________________________________
907 void AliTRD::ResetDigits()
910 // Reset number of digits and the digits array for this detector
914 if (fDigits) fDigits->Clear();
918 //_____________________________________________________________________________
919 void AliTRD::SetTreeAddress()
922 // Set the branch addresses for the trees.
925 if ( fLoader->TreeH() && (fHits == 0x0)) {
926 fHits = new TClonesArray("AliTRDhit",405);
928 AliDetector::SetTreeAddress();
932 //_____________________________________________________________________________
933 void AliTRD::SetPHOShole()
936 // Selects a geometry with a hole in front of the PHOS
939 fGeometry->SetPHOShole();
943 //_____________________________________________________________________________
944 void AliTRD::SetRICHhole()
947 // Selects a geometry with a hole in front of the RICH
950 fGeometry->SetRICHhole();
954 //_____________________________________________________________________________
955 AliTRD &AliTRD::operator=(const AliTRD &trd)
958 // Assignment operator
961 if (this != &trd) ((AliTRD &) trd).Copy(*this);