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 ///////////////////////////////////////////////////////////////////////////////
21 // This class contains the basic functions for the Time Of Flight //
22 // detector. Functions specific to one particular geometry are //
23 // contained in the derived classes //
25 // VERSIONE WITH 5 SYMMETRIC MODULES ALONG Z AXIS
26 // ==============================================
28 // VERSION WITH HOLES FOR PHOS AND TRD IN SPACEFRAME WITH HOLES
30 // Volume sensibile : FPAD
36 <img src="picts/AliTOFClass.gif">
42 ///////////////////////////////////////////////////////////////////////////////
45 #include <Riostream.h>
46 #include <Rstrstream.h>
58 #include <TVirtualMC.h>
61 #include "AliLoader.h"
65 #include "AliTOFRawDigit.h"
66 #include "AliTOFRawSector.h"
67 #include "AliTOFRoc.h"
68 #include "AliTOFSDigit.h"
69 #include "AliTOFdigit.h"
70 #include "AliTOFhit.h"
71 #include "AliTOFhitT0.h"
73 #include "AliTOFDigitizer.h"
74 #include "AliTOFtracker.h"
78 //_____________________________________________________________________________
82 // Default constructor
91 fReconParticles = 0x0;
98 //_____________________________________________________________________________
99 AliTOF::AliTOF(const char *name, const char *title, Option_t *option)
100 : AliDetector(name,title)
103 // AliTOF standard constructor
105 // Here are fixed some important parameters
108 // Initialization of hits, sdigits and digits array
109 // added option for time zero analysis
110 fFGeom = 0x0; //skowron
113 fReconParticles= 0x0;
117 if (strstr(option,"tzero")){
118 fHits = new TClonesArray("AliTOFhitT0", 1000);
120 cout << "tzero option requires AliTOFv4T0 as TOF version (check Your Config.C)" << endl;
122 fHits = new TClonesArray("AliTOFhit", 1000);
126 Fatal("AliTOF","gAlice==0 !");
128 if (gAlice->GetMCApp()->GetHitLists())
129 gAlice->GetMCApp()->AddHitList(fHits);
130 else Error("AliTOF","gAlice->GetHitLists()==0");
133 fSDigits = new TClonesArray("AliTOFSDigit", 1000);
134 fDigits = new TClonesArray("AliTOFdigit", 1000);
140 fReconParticles = 0x0;
144 // Digitization parameters
146 // (Transfer Functions to be inserted here)
152 // General Geometrical Parameters
153 fNTof = 18; // number of sectors
156 fZlenC = 177.5;//cm length of module C
157 fZlenB = 141.0;//cm length of module B
158 fZlenA = 106.0;//cm length of module A
159 fZtof = 371.5;//cm total semi-length of TOF detector
162 fStripLn = 122.0;//cm Strip Length
163 fSpace = 5.5;//cm Space Beetween the strip and the bottom of the plate
164 fDeadBndZ= 1.5;//cm Dead Boundaries of a Strip along Z direction (width)
165 fDeadBndX= 1.0;//cm Dead Boundaries of a Strip along X direction (length)
166 fXpad = 2.5;//cm X size of a pad
167 fZpad = 3.5;//cm Z size of a pad
168 fGapA = 4.; //cm Gap beetween tilted strip in A-type plate
169 fGapB = 6.; //cm Gap beetween tilted strip in B-type plate
170 fOverSpc = 15.3;//cm Space available for sensitive layers in radial direction
171 fNpadX = 48; // Number of pads in a strip along the X direction
172 fNpadZ = 2; // Number of pads in a strip along the Z direction
173 fPadXStr = fNpadX*fNpadZ; //Number of pads per strip
174 fNStripA = 15; // number of strips in A type module
175 fNStripB = 19; // number of strips in B type module
176 fNStripC = 20; // number of strips in C type module
178 // Physical performances
182 // DAQ characteristics
183 // cfr. TOF-TDR pag. 105 for Glossary
184 // TARODA : TOF-ALICE Read Out and Data Acquisition system
185 fPadXSector = 8928; // number of pad per sector -with no holes-
186 // ((15+2*19+2*20)*(48*2))
187 fNRoc = 14; // number of Roc (Read Out Controller) (TARODA)
188 fNFec = 32; // number of Fec (Front-End electronic Card)
190 fNTdc = 32; // number of Tdc (Time to Digital Converter)
191 fNPadXRoc = (Int_t)fPadXSector/fNRoc; // number of pads for each ROC
195 //_____________________________________________________________________________
196 void AliTOF::CreateTOFFolders()
198 // create the ALICE TFolder
199 // create the ALICE TTasks
200 // create the ALICE main TFolder
201 // to be done by AliRun
203 TFolder * alice = new TFolder();
204 alice->SetNameTitle("FPAlice", "Alice Folder") ;
205 gROOT->GetListOfBrowsables()->Add(alice) ;
207 TFolder * aliceF = alice->AddFolder("folders", "Alice memory Folder") ;
208 // make it the owner of the objects that it contains
211 TFolder * geomF = aliceF->AddFolder("Geometry", "Geometry objects") ;
212 TFolder * aliceT = alice->AddFolder("tasks", "Alice tasks Folder") ;
213 // make it the owner of the objects that it contains
216 TTask * aliceDi = new TTask("(S)Digitizer", "Alice SDigitizer & Digitizer") ;
217 aliceT->Add(aliceDi);
219 TTask * aliceRe = new TTask("Reconstructioner", "Alice Reconstructioner") ;
220 aliceT->Add(aliceRe);
222 char * tempo = new char[80] ;
224 // creates the TOF Digitizer and adds it to alice main (S)Digitizer task
225 sprintf(tempo, "%sDigitizers container",GetName() ) ;
226 fDTask = new TTask(GetName(), tempo);
227 aliceDi->Add(fDTask) ;
229 // creates the TOF reconstructioner and adds it to alice main Reconstructioner task
230 sprintf(tempo, "%sReconstructioner container",GetName() ) ;
231 fReTask = new TTask(GetName(), tempo);
232 aliceRe->Add(fReTask) ;
236 // creates the TOF geometry folder
237 geomF->AddFolder("TOF", "Geometry for TOF") ;
240 //_____________________________________________________________________________
244 // it remove also the alice folder
245 // and task that TOF creates instead of AliRun
246 /* PH Temporarily commented because of problems
247 TFolder * alice = (TFolder*)gROOT->GetListOfBrowsables()->FindObject("FPAlice") ;
271 fReconParticles->Delete ();
272 delete fReconParticles;
278 //_____________________________________________________________________________
279 void AliTOF::AddHit(Int_t track, Int_t *vol, Float_t *hits)
283 // new with placement used
285 TClonesArray &lhits = *fHits;
286 new(lhits[fNhits++]) AliTOFhit(fIshunt, track, vol, hits);
289 //_____________________________________________________________________________
290 void AliTOF::AddT0Hit(Int_t track, Int_t *vol, Float_t *hits)
294 // new with placement used
296 TClonesArray &lhits = *fHits;
297 new(lhits[fNhits++]) AliTOFhitT0(fIshunt, track, vol, hits);
300 //_____________________________________________________________________________
301 void AliTOF::AddDigit(Int_t *tracks, Int_t *vol, Float_t *digits)
305 // new with placement used
307 TClonesArray &ldigits = *fDigits;
308 new (ldigits[fNdigits++]) AliTOFdigit(tracks, vol, digits);
311 //___________________________________________
312 void AliTOF::AddSDigit(Int_t tracknum, Int_t *vol, Float_t *digits)
319 TClonesArray &lSDigits = *fSDigits;
320 new(lSDigits[fNSDigits++]) AliTOFSDigit(tracknum, vol, digits);
323 //_____________________________________________________________________________
324 void AliTOF::SetTreeAddress ()
326 // Set branch address for the Hits and Digits Tree.
329 if (fLoader->TreeH())
333 if (fTZero) fHits = new TClonesArray("AliTOFhitT0", 1000);
334 else fHits = new TClonesArray("AliTOFhit", 1000);
337 AliDetector::SetTreeAddress ();
340 TTree *treeD = fLoader->TreeD();
344 branch = treeD->GetBranch (branchname);
347 if (fDigits == 0x0) fDigits = new TClonesArray("AliTOFdigit", 1000);
348 branch->SetAddress (&fDigits);
352 if (fLoader->TreeS () )
354 branch = fLoader->TreeS ()->GetBranch ("TOF");
356 if (fSDigits == 0x0) fSDigits = new TClonesArray("AliTOFSDigit", 1000);
357 branch->SetAddress (&fSDigits);
361 if (fLoader->TreeR() && fReconParticles) //I do not know where this array is created - skowron
363 branch = fLoader->TreeR()->GetBranch("TOF");
366 branch->SetAddress(&fReconParticles) ;
371 //_____________________________________________________________________________
372 void AliTOF::CreateGeometry()
375 // Common geometry code
379 <img src="picts/AliTOFv23.gif">
383 const Double_t kPi=TMath::Pi();
384 const Double_t kDegrad=kPi/180.;
386 Float_t xTof, yTof, wall;
388 // frame inbetween TOF modules
391 // Sizes of TOF module with its support etc..
392 xTof = 2.*(fRmin*TMath::Tan(10*kDegrad)-wall/2-.5);
395 // TOF module internal definitions
396 TOFpc(xTof, yTof, fZlenC, fZlenB, fZlenA, fZtof);
399 //_____________________________________________________________________________
400 void AliTOF::DrawModule() const
403 // Draw a shaded view of the common part of the TOF geometry
406 cout << " Drawing of AliTOF"<< endl;
407 // Set everything unseen
408 gMC->Gsatt("*", "seen", -1);
410 // Set ALIC mother transparent
411 gMC->Gsatt("ALIC","SEEN",0);
413 // Set the volumes visible
414 gMC->Gsatt("FTOA","SEEN",1);
415 gMC->Gsatt("FTOB","SEEN",1);
416 gMC->Gsatt("FTOC","SEEN",1);
417 gMC->Gsatt("FLTA","SEEN",1);
418 gMC->Gsatt("FLTB","SEEN",1);
419 gMC->Gsatt("FLTC","SEEN",1);
420 gMC->Gsatt("FSTR","SEEN",1);
422 gMC->Gdopt("hide", "on");
423 gMC->Gdopt("shad", "on");
424 gMC->Gsatt("*", "fill", 7);
425 gMC->SetClipBox(".");
426 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
428 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
429 gMC->Gdhead(1111, "Time Of Flight");
430 gMC->Gdman(18, 4, "MAN");
431 gMC->Gdopt("hide","off");
434 //_____________________________________________________________________________
435 void AliTOF::CreateMaterials()
438 // Defines TOF materials for all versions
439 // Revision: F. Pierella 18-VI-2002
442 Int_t isxfld = gAlice->Field()->Integ();
443 Float_t sxmgmx = gAlice->Field()->Max();
445 //--- Quartz (SiO2) to simulate float glass
446 // density tuned to have correct float glass
448 Float_t aq[2] = { 28.0855,15.9994 };
449 Float_t zq[2] = { 14.,8. };
450 Float_t wq[2] = { 1.,2. };
451 Float_t dq = 2.55; // std value: 2.2
454 // --- Freon C2F4H2 (TOF-TDR pagg.)
455 // Geant Manual CONS110-1, pag. 43 (Geant, Detector Description and Simulation Tool)
456 Float_t afre[3] = {12.011,18.998,1.007};
457 Float_t zfre[3] = { 6., 9., 1.};
458 Float_t wfre[3] = { 2., 4., 2.};
459 Float_t densfre = 0.00375;
460 // http://www.fi.infn.it/sezione/prevprot/gas/freon.html
463 //-- Isobutane quencher C4H10 (5% in the sensitive mixture)
464 Float_t aiso[2] = {12.011,1.007};
465 Float_t ziso[2] = { 6., 1.};
466 Float_t wiso[2] = { 4., 10.};
467 Float_t densiso = .......; // (g/cm3) density
468 Int_t nfre = -2; // < 0 i.e. proportion by number of atoms of each kind
469 //-- SF6 (5% in the sensitive mixture)
470 Float_t asf[3] = {32.066,18.998};
471 Float_t zsf[3] = { 16., 9.};
472 Float_t wsf[3] = { 1., 6.};
473 Float_t denssf = .....; // (g/cm3) density
474 Int_t nfre = -2; // < 0 i.e. proportion by number of atoms of each kind
477 Float_t ac[2] = {12.,16.};
478 Float_t zc[2] = { 6., 8.};
479 Float_t wc[2] = { 1., 2.};
480 Float_t dc = .001977;
482 // For mylar (C5H4O2)
483 Float_t amy[3] = { 12., 1., 16. };
484 Float_t zmy[3] = { 6., 1., 8. };
485 Float_t wmy[3] = { 5., 4., 2. };
488 // For polyethilene (CH2) - honeycomb -
489 Float_t ape[2] = { 12., 1. };
490 Float_t zpe[2] = { 6., 1. };
491 Float_t wpe[2] = { 1., 2. };
492 Float_t dpe = 0.935*0.479; //To have 1%X0 for 1cm as for honeycomb
495 Float_t ag10[4] = { 12.,1.,16.,28. };
496 Float_t zg10[4] = { 6.,1., 8.,14. };
497 Float_t wmatg10[4] = { .259,.288,.248,.205 };
498 Float_t densg10 = 1.7;
501 // plexiglass CH2=C(CH3)CO2CH3
502 Float_t aplex[3] = { 12.,1.,16.};
503 Float_t zplex[3] = { 6.,1., 8.};
504 Float_t wmatplex[3] = {5.,8.,2.};
505 Float_t densplex =1.16;
508 // ---- ALUMINA (AL203)
509 Float_t aal[2] = { 27.,16.};
510 Float_t zal[2] = { 13., 8.};
511 Float_t wmatal[2] = { 2.,3. };
512 Float_t densal = 2.3;
515 Float_t awa[2] = { 1., 16. };
516 Float_t zwa[2] = { 1., 8. };
517 Float_t wwa[2] = { 2., 1. };
522 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
523 Float_t zsteel[4] = { 26.,24.,28.,14. };
524 Float_t wsteel[4] = { .715,.18,.1,.005 };
527 //AliMaterial(0, "Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
528 AliMaterial( 1, "Air$",14.61,7.3,0.001205,30423.24,67500.);
529 AliMaterial( 2, "Cu $", 63.54, 29.0, 8.96, 1.43, 14.8);
530 AliMaterial( 3, "C $", 12.01, 6.0, 2.265,18.8, 74.4);
531 AliMixture ( 4, "Polyethilene$", ape, zpe, dpe, npe, wpe);
532 AliMixture ( 5, "G10$", ag10, zg10, densg10, nlmatg10, wmatg10);
533 AliMixture ( 6, "PLE$", aplex, zplex, densplex, nplex, wmatplex);
534 AliMixture ( 7, "CO2$", ac, zc, dc, nc, wc);
535 AliMixture ( 8, "ALUMINA$", aal, zal, densal, nlmatal, wmatal);
536 AliMaterial( 9, "Al $", 26.98, 13., 2.7, 8.9, 37.2);
537 AliMaterial(10, "C-TRD$", 12.01, 6., 2.265*18.8/69.282*15./100, 18.8, 74.4); // for 15%
538 AliMixture (11, "Mylar$", amy, zmy, dmy, nmy, wmy);
539 AliMixture (12, "Freon$", afre, zfre, densfre, nfre, wfre);
540 AliMixture (13, "Glass$", aq, zq, dq, nq, wq);
541 AliMixture (14, "Water$", awa, zwa, dwa, nwa, wwa);
542 AliMixture (15, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
544 Float_t epsil, stmin, deemax, stemax;
547 // EPSIL = 0.1 ! Tracking precision,
548 // STEMAX = 0.1 ! Maximum displacement for multiple scattering
549 // DEEMAX = 0.1 ! Maximum fractional energy loss, DLS
553 epsil = .001; // Tracking precision,
554 stemax = -1.; // Maximum displacement for multiple scattering
555 deemax = -.3; // Maximum fractional energy loss, DLS
558 AliMedium( 1, "Air$" , 1, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
559 AliMedium( 2, "Cu $" , 2, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
560 AliMedium( 3, "C $" , 3, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
561 AliMedium( 4, "Pol$" , 4, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
562 AliMedium( 5, "G10$" , 5, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
563 AliMedium( 6, "PLE$" , 6, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
564 AliMedium( 7, "CO2$" , 7, 0, isxfld, sxmgmx, 10., -.01, -.1, .01, -.01);
565 AliMedium( 8,"ALUMINA$", 8, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
566 AliMedium( 9,"Al Frame$",9, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
567 AliMedium(10, "DME-S$", 6, 1, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
568 AliMedium(11, "C-TRD$", 10, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
569 AliMedium(12, "Myl$" , 11, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
570 AliMedium(13, "Fre$" , 12, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
571 AliMedium(14, "Fre-S$", 12, 1, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
572 AliMedium(15, "Glass$", 13, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
573 AliMedium(16, "Water$", 14, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
574 AliMedium(17, "STEEL$", 15, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
577 //_____________________________________________________________________________
578 Int_t AliTOF::DistancetoPrimitive(Int_t , Int_t ) const
581 // Returns distance from mouse pointer to detector, default version
586 //___________________________________________
587 void AliTOF::ResetHits ()
589 // Reset number of clusters and the cluster array for this detector
590 AliDetector::ResetHits ();
593 //____________________________________________
594 void AliTOF::ResetDigits ()
597 // Reset number of digits and the digits array for this detector
598 AliDetector::ResetDigits ();
601 //____________________________________________
602 void AliTOF::ResetSDigits ()
605 // Reset number of sdigits and the sdigits array for this detector
610 //_____________________________________________________________________________
614 // Initialise TOF detector after it has been built
616 // Set id of TOF sensitive volume
617 if (IsVersion() !=0) fIdSens=gMC->VolId("FPAD");
621 //____________________________________________________________________________
622 void AliTOF::MakeBranch(Option_t* option)
625 // Initializes the Branches of the TOF inside the
626 // trees written for each event.
627 // AliDetector::MakeBranch initializes just the
628 // Branch inside TreeH. Here we add the branches in
629 // TreeD, TreeS and TreeR.
631 const char *oH = strstr(option,"H");
632 if (fLoader->TreeH() && oH)
636 if (fTZero) fHits = new TClonesArray("AliTOFhitT0", 1000);
637 else fHits = new TClonesArray("AliTOFhit", 1000);
641 AliDetector::MakeBranch(option);
643 Int_t buffersize = 4000;
644 Char_t branchname[10];
645 sprintf(branchname,"%s",GetName());
647 const char *oD = strstr(option,"D");
648 const char *oS = strstr(option,"S");
649 const char *oR = strstr(option,"R");
651 if (fLoader->TreeD() && oD){
652 if (fDigits == 0x0) fDigits = new TClonesArray("AliTOFdigit", 1000);
653 MakeBranchInTree(fLoader->TreeD(), branchname, &fDigits,buffersize, 0) ;
656 if (fLoader->TreeS() && oS){
657 if (fSDigits == 0x0) fSDigits = new TClonesArray("AliTOFSDigit", 1000);
658 MakeBranchInTree(fLoader->TreeS(), branchname, &fSDigits,buffersize, 0) ;
661 if (fReconParticles && fLoader->TreeR() && oR){
662 MakeBranchInTree(fLoader->TreeR(), branchname, &fReconParticles,buffersize, 0) ;
666 //____________________________________________________________________________
667 void AliTOF::Makehits(Bool_t hits)
669 // default argument used, see AliTOF.h
670 // Enable/Disable the writing of the TOF-hits branch
672 // by default : enabled for TOFv1, v2, v3, v4
673 // disabled for TOFv0
675 if (hits && (IsVersion()!=0))
676 fIdSens = gMC->VolId("FPAD");
678 cout << "Option for writing the TOF-hits branch on TreeH: disabled" << endl;
681 //____________________________________________________________________________
682 void AliTOF::FinishEvent()
687 //___________________________________________
688 void AliTOF::SDigits2Digits()
691 // Generate digits performing merging
694 int nparticles = gAlice->GetNtrack();
695 cout << "Particles :" <<nparticles<<endl;
696 if (nparticles > 0 ) {
698 AliTOF::Hits2Digits();
702 cout<<"AliTOF::SDigits2Digits"<<endl;
705 cout<<"AliTOF::SDigits2Digits Init"<<endl;
707 cout<<"AliTOF::SDigits2Digits Digitise() "<<endl;
711 //---------------------------------------------------------------------
712 void AliTOF::SetMerger(AliTOFMerger* merger)
714 // Set pointer to merger
718 //---------------------------------------------------------------------
719 AliTOFMerger* AliTOF::Merger()
721 // Return pointer to merger
725 //---------------------------------------------------------------------
726 void AliTOF::Hits2SDigits()
729 // Use the TOF SDigitizer to make TOF SDigits
732 cout<<"AliTOF::Hits2SDigits> start...\n";
734 const char * fileHeader = fLoader->GetRunLoader()->GetFileName().Data();
735 AliTOFSDigitizer * sd = new AliTOFSDigitizer(fileHeader);
742 //---------------------------------------------------------------------
743 void AliTOF::Hits2SDigits(Int_t evNumber1, Int_t evNumber2)
746 // Use the TOF SDigitizer to make TOF SDigits
749 if ((evNumber2-evNumber1)==1)
750 cout << "<AliTOF::Hits2SDigits>: I am making sdigits for the " << evNumber1 << "th event \n";
751 else if ((evNumber2-evNumber1)>1)
752 cout << "<AliTOF::Hits2SDigits>: I am making sdigits for the events from the "
753 << evNumber1 << "th to the " << evNumber2-1 << "th \n";
755 const char * fileHeader = fLoader->GetRunLoader()->GetFileName().Data();
756 AliTOFSDigitizer * sd = new AliTOFSDigitizer(fileHeader,evNumber1,evNumber2) ;
763 //___________________________________________________________________________
764 AliDigitizer* AliTOF::CreateDigitizer(AliRunDigitizer* manager) const
766 return new AliTOFDigitizer(manager);
769 //___________________________________________________________________________
770 Bool_t AliTOF::CheckOverlap(Int_t* vol, Float_t* digit,Int_t Track)
773 // Checks if 2 or more hits belong to the same pad.
774 // In this case the data assigned to the digit object
775 // are the ones of the first hit in order of Time.
776 // 2 hits from the same track on the same pad are collected.
777 // Called only by Hits2SDigits.
778 // This procedure has to be optimized in the next TOF release.
781 Bool_t overlap = kFALSE;
784 for (Int_t ndig=0; ndig<fSDigits->GetEntries(); ndig++){
785 AliTOFdigit* currentDigit = (AliTOFdigit*)(fSDigits->UncheckedAt(ndig));
786 currentDigit->GetLocation(vol2);
788 // check on digit volume
789 for (Int_t i=0;i<=4;i++){
791 if (vol[i]!=vol2[i]) idem=kFALSE;}
793 if (idem){ // same pad fired
794 Float_t tdc2 = digit[0];
795 Float_t tdc1 = currentDigit->GetTdc();
797 // we separate two digits on the same pad if
798 // they are separated in time by at least 25 ns
799 // remember that tdc time is given in ps
801 if (TMath::Abs(tdc1-tdc2)<25000){
802 // in case of overlap we take the earliest
804 currentDigit->SetTdc(tdc2);
805 currentDigit->SetAdc(digit[1]);
808 currentDigit->SetTdc(tdc1);
809 currentDigit->SetAdc(digit[1]);
811 currentDigit->AddTrack(Track); // add track number in the track array
817 } // close if (idem) -> two digits on the same TOF pad
819 } // end loop on existing sdigits
825 //____________________________________________________________________________
826 void AliTOF::Digits2Raw(Int_t evNumber)
829 // Starting from digits, writes the
830 // Raw Data objects, i.e. a
831 // TClonesArray of 18 AliTOFRawSector objects
836 // do nothing if no particles
837 Int_t nparticles = gAlice->GetEvent(evNumber);
838 if (nparticles <= 0) return;
840 tD = gAlice->TreeD();
842 TClonesArray* tofdigits = this->Digits();
843 Int_t ndigits = tofdigits->GetEntriesFast();
845 TClonesArray* rawsectors = new TClonesArray("AliTOFRawSector",fNTof+2);
847 for (Int_t isect=1;isect<=fNTof;isect++){
848 AliTOFRawSector* currentSector = (AliTOFRawSector*)rawsectors->UncheckedAt(isect);
849 TClonesArray* rocData = (TClonesArray*)currentSector->GetRocData();
851 for (Int_t digit=0; digit<ndigits; digit++){
852 AliTOFdigit* currentDigit = (AliTOFdigit*)tofdigits->UncheckedAt(digit);
853 Int_t sector = currentDigit->GetSector();
855 Int_t pad = currentDigit -> GetTotPad();
856 Int_t roc = (Int_t)(pad/fNPadXRoc)-1;
857 if (roc>=fNRoc) printf("Wrong n. of ROC ! Roc = %i",roc);
858 Int_t padRoc = (Int_t) pad%fNPadXRoc;
859 Int_t fec = (Int_t)(padRoc/fNFec)-1;
860 Int_t tdc = (Int_t)(padRoc%fNFec)-1;
861 Float_t time = currentDigit->GetTdc();
862 Float_t charge = currentDigit->GetAdc();
863 AliTOFRoc* currentROC = (AliTOFRoc*)rocData->UncheckedAt(roc);
865 currentROC->AddItem(fec, tdc, error, charge, time);
866 } // close if (sector==isect) i.e. end loop on digits for the current sector
867 } // end loop on TOF digits
869 UInt_t totSize=16,rocSize=0;
870 UInt_t rocHead[14],rocChek[14];
871 UInt_t globalCheckSum=0;
873 for (UInt_t iRoc = 1; iRoc<(UInt_t)fNRoc; iRoc++){
874 AliTOFRoc* currentRoc = (AliTOFRoc*)rocData->UncheckedAt(iRoc);
875 rocSize = currentRoc->GetItems()*2+1;
876 totSize += rocSize*4;
877 if (rocSize>=TMath::Power(2,16)) rocSize=0;
878 rocHead[iRoc] = iRoc<<28;
879 rocHead[iRoc] += rocSize;
880 rocChek[iRoc] = currentRoc->GetCheckSum();
881 Int_t headCheck = currentRoc->BitCount(rocHead[iRoc]);
882 globalCheckSum += headCheck;
883 globalCheckSum += rocChek[iRoc];
886 AliTOFRoc* dummyRoc = new AliTOFRoc();
888 if (totSize>=TMath::Power(2,24)) totSize=0;
889 UInt_t header = totSize;
890 UInt_t sectId = ((UInt_t)isect)<<24;
892 globalCheckSum += dummyRoc->BitCount(header);
893 currentSector->SetGlobalCS(globalCheckSum);
894 currentSector->SetHeader(header);
898 //____________________________________________________________________________
899 void AliTOF::Raw2Digits(Int_t evNumber)
902 // Converts Raw Data objects into digits objects.
903 // We schematize the raw data with a
904 // TClonesArray of 18 AliTOFRawSector objects
916 Int_t nparticles = gAlice->GetEvent(evNumber);
917 if (nparticles <= 0) return;
919 tD = gAlice->TreeD();
921 TClonesArray* rawsectors = new TClonesArray("AliTOFRawSector",fNTof+2);
923 for(Int_t nSec=1; nSec<=fNTof; nSec++){
924 AliTOFRawSector* currentSector = (AliTOFRawSector*)rawsectors->UncheckedAt(nSec);
925 TClonesArray* rocData = (TClonesArray*)currentSector->GetRocData();
926 for(Int_t nRoc=1; nRoc<=14; nRoc++){
927 AliTOFRoc* currentRoc = (AliTOFRoc*)rocData->UncheckedAt(nRoc);
928 Int_t currentItems = currentRoc->GetItems();
929 for(Int_t item=1; item<currentItems; item++){
930 Int_t nPad = currentRoc->GetTotPad(item);
932 Int_t nStrip = (Int_t)(nPad/fPadXStr)+1;
934 if (nStrip<=fNStripC+2*fNStripB+fNStripA) nPlate = 4;
935 if (nStrip<=fNStripC+fNStripB+fNStripA) nPlate = 3;
936 if (nStrip<=fNStripC+fNStripB) nPlate = 2;
937 if (nStrip<=fNStripC) nPlate = 1;
941 case 2: nStrip -= (fNStripC);
943 case 3: nStrip -= (fNStripC+fNStripB);
945 case 4: nStrip -= (fNStripC+fNStripB+fNStripA);
947 case 5: nStrip -= (fNStripC+2*fNStripB+fNStripA);
951 Int_t pad = nPad%fPadXStr;
952 if (pad==0) pad=fPadXStr;
953 Int_t nPadX=0, nPadZ=0;
954 (pad>fNpadX)? nPadX -= fNpadX : nPadX = pad ;
956 (pad>fNpadX)? nPadZ = 2 : nPadZ = 1 ;
959 Float_t tdc = currentRoc->GetTime(item,error);
960 if (!error) digit[0]=tdc;
961 digit[1] = currentRoc->GetCharge(item);
962 AddDigit(tracks,vol,digit);
967 tD->Write(0,TObject::kOverwrite);
970 ////////////////////////////////////////////////////////////////////////
971 void AliTOF::RecreateSDigitsArray() {
973 // delete TClonesArray fSDigits and create it again
974 // needed for backward compatability with PPR test production
977 fSDigits = new TClonesArray("AliTOFSDigit", 1000);
979 ////////////////////////////////////////////////////////////////////////
980 void AliTOF::CreateSDigitsArray() {
982 // create TClonesArray fSDigits
983 // needed for backward compatability with PPR test production
985 fSDigits = new TClonesArray("AliTOFSDigit", 1000);
988 ////////////////////////////////////////////////////////////////////////
989 AliTracker* AliTOF::CreateTracker() const
991 // create a TOF tracker
993 Double_t parPID[] = {130., 5.};
994 return new AliTOFtracker(GetGeometry(), parPID);