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"
49 #include "AliRawReader.h"
52 #include "AliTRDdigit.h"
53 #include "AliTRDdigitizer.h"
54 #include "AliTRDdigitsManager.h"
55 #include "AliTRDgeometry.h"
56 #include "AliTRDhit.h"
57 #include "AliTRDpoints.h"
58 #include "AliTRDrawData.h"
59 #include "AliTRDSimParam.h"
60 #include "AliTRDRecParam.h"
61 #include "AliTRDCommonParam.h"
62 #include "AliTRDcalibDB.h"
66 //_____________________________________________________________________________
76 // Default constructor
81 //_____________________________________________________________________________
82 AliTRD::AliTRD(const char *name, const char *title)
83 :AliDetector(name,title)
91 // Standard constructor for the TRD
94 // Check that FRAME is there otherwise we have no place where to put TRD
95 AliModule *frame = gAlice->GetModule("FRAME");
97 AliError("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 AliError("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 //PH SetMarkerColor(kWhite);
125 //_____________________________________________________________________________
144 //_____________________________________________________________________________
145 void AliTRD::Hits2Digits()
151 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
152 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
155 digitizer.InitDetector();
157 if (!fLoader->TreeH()) {
158 fLoader->LoadHits("read");
160 fLoader->LoadDigits("recreate");
162 AliRunLoader *runLoader = fLoader->GetRunLoader();
164 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
165 runLoader->GetEvent(iEvent);
166 digitizer.Open(runLoader,iEvent);
167 digitizer.MakeDigits();
168 digitizer.WriteDigits();
171 fLoader->UnloadHits();
172 fLoader->UnloadDigits();
176 //_____________________________________________________________________________
177 void AliTRD::Hits2SDigits()
180 // Create summable digits
183 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
184 // For the summable digits
185 digitizer.SetSDigits(kTRUE);
186 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
189 digitizer.InitDetector();
191 if (!fLoader->TreeH()) {
192 fLoader->LoadHits("read");
194 fLoader->LoadSDigits("recreate");
196 AliRunLoader *runLoader = fLoader->GetRunLoader();
198 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
199 runLoader->GetEvent(iEvent);
200 digitizer.Open(runLoader,iEvent);
201 digitizer.MakeDigits();
202 digitizer.WriteDigits();
205 fLoader->UnloadHits();
206 fLoader->UnloadSDigits();
210 //_____________________________________________________________________________
211 AliDigitizer *AliTRD::CreateDigitizer(AliRunDigitizer *manager) const
214 // Creates a new digitizer object
217 return new AliTRDdigitizer(manager);
221 //_____________________________________________________________________________
222 void AliTRD::SDigits2Digits()
225 // Create final digits from summable digits
228 // Create the TRD digitizer
229 AliTRDdigitizer digitizer("TRDdigitizer","TRD digitizer class");
230 AliLog::SetClassDebugLevel("TRDdigitizer",AliDebugLevel());
233 digitizer.SetEvent(gAlice->GetEvNumber());
236 digitizer.InitDetector();
238 // Read the s-digits via digits manager
239 AliTRDdigitsManager sdigitsManager;
241 AliLog::SetClassDebugLevel("TRDdigitisManager",AliDebugLevel());
242 sdigitsManager.SetSDigits(kTRUE);
243 sdigitsManager.CreateArrays();
245 if (!fLoader->TreeS()) {
246 if (fLoader->LoadSDigits("read")) {
250 if (!fLoader->TreeS()) {
251 AliError(Form("Error while reading SDigits for event %d",gAlice->GetEvNumber()));
255 sdigitsManager.ReadDigits(fLoader->TreeS());
257 // Add the s-digits to the input list
258 digitizer.AddSDigitsManager(&sdigitsManager);
260 // Convert the s-digits to normal digits
261 digitizer.SDigits2Digits();
264 if (!fLoader->TreeD()) {
265 fLoader->MakeTree("D");
267 if (digitizer.MakeBranch(fLoader->TreeD())){
268 digitizer.WriteDigits();
273 //_____________________________________________________________________________
274 void AliTRD::Digits2Raw()
277 // Convert digits of the current event to raw data
280 fLoader->LoadDigits();
281 TTree *digits = fLoader->TreeD();
283 AliError("No digits tree");
287 AliTRDrawData rawWriter;
288 if (!rawWriter.Digits2Raw(digits)) {
289 AliError("The raw writer could not load the digits tree");
292 fLoader->UnloadDigits();
296 //_____________________________________________________________________________
297 void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits, Int_t q
298 , Float_t time, Bool_t inDrift)
301 // Add a hit for the TRD
304 TClonesArray &lhits = *fHits;
305 AliTRDhit *hit = new(lhits[fNhits++]) AliTRDhit(fIshunt
316 hit->SetAmplification();
325 //_____________________________________________________________________________
326 void AliTRD::BuildGeometry()
329 // Create the ROOT TNode geometry for the TRD
336 // The dimensions of the TRD super module
337 const Float_t kRmin = 291.0;
338 const Float_t kRmax = 369.0;
339 const Float_t kZmax1 = 378.35;
340 const Float_t kZmax2 = 302.0;
349 const Int_t kColorTRD = 46;
351 // Find the top node alice
352 top = gAlice->GetGeometry()->GetNode("alice");
354 if (fDisplayType == 0) {
356 pgon = new TPGON("S_TRD","TRD","void",0,360,AliTRDgeometry::Nsect(),4);
359 pgon->DefineSection(0,-kZmax1,rmax,rmax);
360 pgon->DefineSection(1,-kZmax2,rmin,rmax);
361 pgon->DefineSection(2, kZmax2,rmin,rmax);
362 pgon->DefineSection(3, kZmax1,rmax,rmax);
364 node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
365 node->SetLineColor(kColorTRD);
369 else if (fDisplayType == 1) {
373 Float_t slope = (kZmax1 - kZmax2) / (kRmax - kRmin);
375 rmin = kRmin + AliTRDgeometry::CraHght();
376 rmax = rmin + AliTRDgeometry::CdrHght();
378 Float_t thickness = rmin - kRmin;
379 zmax2 = kZmax2 + slope * thickness;
380 zmax1 = zmax2 + slope * AliTRDgeometry::DrThick();
382 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
384 sprintf(name,"S_TR1%d",iPlan);
385 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
386 pgon->DefineSection(0,-zmax1,rmax,rmax);
387 pgon->DefineSection(1,-zmax2,rmin,rmax);
388 pgon->DefineSection(2, zmax2,rmin,rmax);
389 pgon->DefineSection(3, zmax1,rmax,rmax);
391 node = new TNode("TRD","TRD",name,0,0,0,"");
392 node->SetLineColor(kColorTRD);
395 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
396 rmin = rmin + height;
397 rmax = rmax + height;
398 zmax1 = zmax1 + slope * height;
399 zmax2 = zmax2 + slope * height;
403 thickness += AliTRDgeometry::DrThick();
404 rmin = kRmin + thickness;
405 rmax = rmin + AliTRDgeometry::AmThick();
406 zmax2 = kZmax2 + slope * thickness;
407 zmax1 = zmax2 + slope * AliTRDgeometry::AmThick();
409 for (iPlan = 0; iPlan < AliTRDgeometry::Nplan(); iPlan++) {
411 sprintf(name,"S_TR2%d",iPlan);
412 pgon = new TPGON(name,"TRD","void",0,360,AliTRDgeometry::Nsect(),4);
413 pgon->DefineSection(0,-zmax1,rmax,rmax);
414 pgon->DefineSection(1,-zmax2,rmin,rmax);
415 pgon->DefineSection(2, zmax2,rmin,rmax);
416 pgon->DefineSection(3, zmax1,rmax,rmax);
418 node = new TNode("TRD","TRD",name,0,0,0,"");
419 node->SetLineColor(kColorTRD);
422 Float_t height = AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace();
423 rmin = rmin + height;
424 rmax = rmax + height;
425 zmax1 = zmax1 + slope * height;
426 zmax2 = zmax2 + slope * height;
434 //_____________________________________________________________________________
435 void AliTRD::CreateGeometry()
438 // Creates the volumes for the TRD chambers
441 // Check that FRAME is there otherwise we have no place where to put the TRD
442 AliModule *frame = gAlice->GetModule("FRAME");
444 AliFatal("The TRD needs the FRAME to be defined first");
447 fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
451 //_____________________________________________________________________________
452 void AliTRD::CreateMaterials()
455 // Create the materials for the TRD
458 Int_t isxfld = gAlice->Field()->Integ();
459 Float_t sxmgmx = gAlice->Field()->Max();
461 // For polyethilene (CH2)
462 Float_t ape[2] = { 12.011 , 1.0079 };
463 Float_t zpe[2] = { 6.0 , 1.0 };
464 Float_t wpe[2] = { 1.0 , 2.0 };
468 Float_t aco[2] = { 12.011 , 15.9994 };
469 Float_t zco[2] = { 6.0 , 8.0 };
470 Float_t wco[2] = { 1.0 , 2.0 };
471 Float_t dco = 0.00186;
474 Float_t awa[2] = { 1.0079, 15.9994 };
475 Float_t zwa[2] = { 1.0 , 8.0 };
476 Float_t wwa[2] = { 2.0 , 1.0 };
479 // For isobutane (C4H10)
480 Float_t ais[2] = { 12.011 , 1.0079 };
481 Float_t zis[2] = { 6.0 , 1.0 };
482 Float_t wis[2] = { 4.0 , 10.0 };
483 Float_t dis = 0.00267;
485 // For plexiglas (C5H8O2)
486 Float_t apg[3] = { 12.011 , 1.0079, 15.9994 };
487 Float_t zpg[3] = { 6.0 , 1.0 , 8.0 };
488 Float_t wpg[3] = { 5.0 , 8.0 , 2.0 };
491 // For epoxy (C18H19O3)
492 Float_t aEpoxy[3] = { 15.9994, 1.0079, 12.011 };
493 Float_t zEpoxy[3] = { 8.0 , 1.0 , 6.0 };
494 Float_t wEpoxy[3] = { 3.0 , 19.0 , 18.0 };
495 Float_t dEpoxy = 1.8 ;
497 // For Araldite, low density epoxy (C18H19O3)
498 Float_t aAral[3] = { 15.9994, 1.0079, 12.011 };
499 Float_t zAral[3] = { 8.0 , 1.0 , 6.0 };
500 Float_t wAral[3] = { 3.0 , 19.0 , 18.0 };
501 Float_t dAral = 1.05;
504 Float_t aAir[4] = { 12.011 , 14.0 , 15.9994 , 36.0 };
505 Float_t zAir[4] = { 6.0 , 7.0 , 8.0 , 18.0 };
506 Float_t wAir[4] = { 0.000124, 0.755267, 0.231781, 0.012827 };
507 Float_t dAir = 1.20479e-03;
510 Float_t aG10[4] = { 1.0079 , 12.011 , 15.9994 , 28.086 };
511 Float_t zG10[4] = { 1.0 , 6.0 , 8.0 , 14.0 };
512 Float_t wG10[4] = { 0.15201 , 0.10641 , 0.49444 , 0.24714 };
515 // For Xe/CO2-gas-mixture
516 Float_t aXeCO2[3] = { 131.29 , 12.0107 , 15.9994 };
517 Float_t zXeCO2[3] = { 54.0 , 6.0 , 8.0 };
518 Float_t wXeCO2[3] = { 8.5 , 1.5 , 3.0 };
519 // Xe-content of the Xe/CO2-mixture (85% / 15%)
521 Float_t dxe = 0.00549;
522 Float_t dgm = fxc * dxe + (1.0 - fxc) * dco;
524 // General tracking parameter
525 Float_t tmaxfd = -10.0;
526 Float_t stemax = -1.0e10;
527 Float_t deemax = -0.1;
528 Float_t epsil = 1.0e-4;
529 Float_t stmin = -0.001;
531 //////////////////////////////////////////////////////////////////////////
533 //////////////////////////////////////////////////////////////////////////
535 AliMaterial( 1, "Al" , 26.98, 13.0, 2.7 , 8.9 , 37.2);
536 AliMaterial( 4, "Xe" , 131.29, 54.0, dxe , 1546.16, 0.0);
537 AliMaterial( 5, "Cu" , 63.54, 29.0, 8.96 , 1.43, 14.8);
538 AliMaterial( 6, "C" , 12.01, 6.0, 2.265 , 18.8 , 74.4);
539 AliMaterial(15, "Sn" , 118.71, 50.0, 7.31 , 1.21, 14.8);
540 AliMaterial(16, "Si" , 28.09, 14.0, 2.33 , 9.36, 37.2);
541 AliMaterial(18, "Fe" , 55.85, 26.0, 7.87 , 1.76, 14.8);
544 AliMixture(2, "Air" , aAir, zAir, dAir, 4, wAir );
545 AliMixture(3, "Polyethilene", ape, zpe, dpe, -2, wpe );
546 AliMixture(8, "CO2", aco, zco, dco, -2, wco );
547 AliMixture(9, "Isobutane", ais, zis, dis, -2, wis );
548 AliMixture(10,"Gas mixture", aXeCO2, zXeCO2, dgm, -3, wXeCO2);
549 AliMixture(12,"G10", aG10, zG10, dG10, 4, wG10 );
550 AliMixture(13,"Water", awa, zwa, dwa, -2, wwa );
551 AliMixture(14,"Plexiglas", apg, zpg, dpg, -3, wpg );
552 AliMixture(17,"Epoxy", aEpoxy, zEpoxy, dEpoxy, -3, wEpoxy);
553 AliMixture(19,"Araldite", aAral, zAral, dAral, -3, wAral );
555 //////////////////////////////////////////////////////////////////////////
556 // Tracking Media Parameters
557 //////////////////////////////////////////////////////////////////////////
560 AliMedium( 1,"Al Frame" , 1,0,isxfld,sxmgmx
561 ,tmaxfd,stemax,deemax,epsil,stmin);
563 AliMedium( 2,"Air" , 2,0,isxfld,sxmgmx
564 ,tmaxfd,stemax,deemax,epsil,stmin);
566 AliMedium( 3,"Wires" , 5,0,isxfld,sxmgmx
567 ,tmaxfd,stemax,deemax,epsil,stmin);
568 // All other ROB materials (caps, etc.)
569 AliMedium( 4,"ROB Other" , 5,0,isxfld,sxmgmx
570 ,tmaxfd,stemax,deemax,epsil,stmin);
572 AliMedium( 5,"Padplane" , 5,1,isxfld,sxmgmx
573 ,tmaxfd,stemax,deemax,epsil,stmin);
575 AliMedium( 6,"Readout" , 5,0,isxfld,sxmgmx
576 ,tmaxfd,stemax,deemax,epsil,stmin);
578 AliMedium( 7,"C Frame" , 6,0,isxfld,sxmgmx
579 ,tmaxfd,stemax,deemax,epsil,stmin);
580 // INOX of cooling bus bars
581 AliMedium( 8,"Cooling bus",18,0,isxfld,sxmgmx
582 ,tmaxfd,stemax,deemax,epsil,stmin);
583 // Gas-mixture (Xe/CO2)
584 AliMedium( 9,"Gas-mix" ,10,1,isxfld,sxmgmx
585 ,tmaxfd,stemax,deemax,epsil,stmin);
587 AliMedium(10,"Nomex" ,12,0,isxfld,sxmgmx
588 ,tmaxfd,stemax,deemax,epsil,stmin);
590 AliMedium(11,"Glue" ,19,0,isxfld,sxmgmx
591 ,tmaxfd,stemax,deemax,epsil,stmin);
593 AliMedium(13,"G10-plates" ,12,0,isxfld,sxmgmx
594 ,tmaxfd,stemax,deemax,epsil,stmin);
596 AliMedium(14,"Water" ,13,0,isxfld,sxmgmx
597 ,tmaxfd,stemax,deemax,epsil,stmin);
598 // Rohacell (plexiglas) for the radiator
599 AliMedium(15,"Rohacell" ,14,0,isxfld,sxmgmx
600 ,tmaxfd,stemax,deemax,epsil,stmin);
602 AliMedium(16,"MCM-Al" , 1,0,isxfld,sxmgmx
603 ,tmaxfd,stemax,deemax,epsil,stmin);
605 AliMedium(17,"MCM-Sn" ,15,0,isxfld,sxmgmx
606 ,tmaxfd,stemax,deemax,epsil,stmin);
608 AliMedium(18,"MCM-Cu" , 5,0,isxfld,sxmgmx
609 ,tmaxfd,stemax,deemax,epsil,stmin);
611 AliMedium(19,"MCM-G10" ,12,0,isxfld,sxmgmx
612 ,tmaxfd,stemax,deemax,epsil,stmin);
613 // Si in readout chips
614 AliMedium(20,"Chip-Si" ,16,0,isxfld,sxmgmx
615 ,tmaxfd,stemax,deemax,epsil,stmin);
616 // Epoxy in readout chips
617 AliMedium(21,"Chip-Ep" ,17,0,isxfld,sxmgmx
618 ,tmaxfd,stemax,deemax,epsil,stmin);
620 AliMedium(22,"Conn-PE" , 3,0,isxfld,sxmgmx
621 ,tmaxfd,stemax,deemax,epsil,stmin);
623 AliMedium(23,"Chip-Cu" , 5,0,isxfld,sxmgmx
624 ,tmaxfd,stemax,deemax,epsil,stmin);
625 // Al of cooling pipes
626 AliMedium(24,"Cooling" , 1,0,isxfld,sxmgmx
627 ,tmaxfd,stemax,deemax,epsil,stmin);
629 AliMedium(25,"Serv-Cu" , 5,0,isxfld,sxmgmx
630 ,tmaxfd,stemax,deemax,epsil,stmin);
632 // Save the density values for the TRD absorbtion
639 //_____________________________________________________________________________
640 void AliTRD::DrawModule() const
643 // Draw a shaded view of the Transition Radiation Detector version 0
646 // Set everything unseen
647 gMC->Gsatt("*" ,"SEEN",-1);
649 // Set ALIC mother transparent
650 gMC->Gsatt("ALIC","SEEN", 0);
652 // Set the volumes visible
653 if (fGeometry->IsVersion() == 0) {
654 gMC->Gsatt("B071","SEEN", 0);
655 gMC->Gsatt("B074","SEEN", 0);
656 gMC->Gsatt("B075","SEEN", 0);
657 gMC->Gsatt("B077","SEEN", 0);
658 gMC->Gsatt("BTR1","SEEN", 0);
659 gMC->Gsatt("BTR2","SEEN", 0);
660 gMC->Gsatt("BTR3","SEEN", 0);
661 gMC->Gsatt("UTR1","SEEN", 0);
662 gMC->Gsatt("UTR2","SEEN", 0);
663 gMC->Gsatt("UTR3","SEEN", 0);
666 gMC->Gsatt("B071","SEEN", 0);
667 gMC->Gsatt("B074","SEEN", 0);
668 gMC->Gsatt("B075","SEEN", 0);
669 gMC->Gsatt("B077","SEEN", 0);
670 gMC->Gsatt("BTR1","SEEN", 0);
671 gMC->Gsatt("BTR2","SEEN", 0);
672 gMC->Gsatt("BTR3","SEEN", 0);
673 gMC->Gsatt("UTR1","SEEN", 0);
676 gMC->Gdopt("hide", "on");
677 gMC->Gdopt("shad", "on");
678 gMC->Gsatt("*", "fill", 7);
679 gMC->SetClipBox(".");
680 gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
682 gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
683 gMC->Gdhead(1111, "Transition Radiation Detector");
684 gMC->Gdman(18, 4, "MAN");
688 //_____________________________________________________________________________
689 Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
692 // Distance between the mouse and the TRD detector on the screen
700 //_____________________________________________________________________________
704 // Initialize the TRD detector after the geometry has been created
707 AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++");
709 if (fGeometry->IsVersion() != 1) {
710 AliError("Not a valid geometry");
713 // Special tracking options for charged particles for XeCO2
714 gMC->Gstpar((* fIdtmed)[9],"DRAY" , 1.0);
715 gMC->Gstpar((* fIdtmed)[9],"STRA" , 1.0);
716 gMC->Gstpar((* fIdtmed)[9],"LOSS" ,13.0); // Specific energy loss
717 gMC->Gstpar((* fIdtmed)[9],"PRIMIO_E",23.53); // 1st ionisation potential
718 gMC->Gstpar((* fIdtmed)[9],"PRIMIO_N",19.344431); // Number of primaries
722 //_____________________________________________________________________________
723 void AliTRD::LoadPoints(Int_t )
726 // Store x, y, z of all hits in memory.
727 // Hit originating from TR photons are given a different color
734 Int_t nhits = fHits->GetEntriesFast();
739 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
741 fPoints = new TObjArray(tracks);
746 Int_t *ntrkE = new Int_t[tracks];
747 Int_t *ntrkT = new Int_t[tracks];
748 Int_t *limiE = new Int_t[tracks];
749 Int_t *limiT = new Int_t[tracks];
750 Float_t **coorE = new Float_t*[tracks];
751 Float_t **coorT = new Float_t*[tracks];
752 for(Int_t i = 0; i < tracks; i++) {
761 AliTRDpoints *points = 0;
764 Int_t chunk = nhits / 4 + 1;
766 // Loop over all the hits and store their position
767 ahit = (AliTRDhit *) FirstHit(-1);
771 if (ahit->GetCharge() >= 0) {
773 trk = ahit->GetTrack();
774 if (ntrkE[trk] == limiE[trk]) {
775 // Initialise a new track
776 fp = new Float_t[3*(limiE[trk]+chunk)];
778 memcpy(fp,coorE[trk],sizeof(Float_t)*3*limiE[trk]);
779 delete [] coorE[trk];
787 fp[3*ntrkE[trk] ] = ahit->X();
788 fp[3*ntrkE[trk]+1] = ahit->Y();
789 fp[3*ntrkE[trk]+2] = ahit->Z();
794 else if ((ahit->GetCharge() < 0) &&
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(kWhite); //PH This is the default color in TRD
833 points->SetMarkerSize(1); //PH Default size=1
834 points->SetPolyMarker(ntrkE[trk],coorE[trk],1); //PH Default style=1
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_t *cD = strstr(option,"D");
874 AliDetector::MakeBranch(option);
879 MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,buffersize,0);
884 //_____________________________________________________________________________
885 void AliTRD::ResetDigits()
888 // Reset number of digits and the digits array for this detector
899 //_____________________________________________________________________________
900 void AliTRD::SetTreeAddress()
903 // Set the branch addresses for the trees.
906 if (fLoader->TreeH() &&
908 fHits = new TClonesArray("AliTRDhit",405);
910 AliDetector::SetTreeAddress();
914 //_____________________________________________________________________________
915 Bool_t AliTRD::Raw2SDigits(AliRawReader *rawReader)
918 // Converts RAW data to SDigits
921 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
923 AliError("Can not get TRD loader from Run Loader");
928 tree = loader->TreeS();
930 loader->MakeTree("S");
931 tree = loader->TreeS();
934 AliTRDrawData *rawdata = new AliTRDrawData();
935 AliTRDdigitsManager *sdigitsManager = rawdata->Raw2Digits(rawReader);
936 if (sdigitsManager) {
937 sdigitsManager->SetSDigits(kTRUE);
938 sdigitsManager->MakeBranch(tree);
939 sdigitsManager->WriteDigits();
948 //_____________________________________________________________________________
949 AliTRD &AliTRD::operator=(const AliTRD &trd)
952 // Assignment operator
956 ((AliTRD &) trd).Copy(*this);