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 // Creates and handles digits from TRD hits //
22 // Authors: C. Blume (blume@ikf.uni-frankfurt.de) //
26 // The following effects are included: //
29 // - Gas gain including fluctuations //
30 // - Pad-response (simple Gaussian approximation) //
32 // - Electronics noise //
33 // - Electronics gain //
36 ////////////////////////////////////////////////////////////////////////////
47 #include <TGeoManager.h>
50 #include "AliRunLoader.h"
51 #include "AliLoader.h"
52 #include "AliConfig.h"
54 #include "AliRunDigitizer.h"
55 #include "AliRunLoader.h"
56 #include "AliLoader.h"
60 #include "AliTRDhit.h"
61 #include "AliTRDdigitizer.h"
62 #include "AliTRDdataArrayI.h"
63 #include "AliTRDdataArrayS.h"
64 #include "AliTRDdataArrayF.h"
65 #include "AliTRDsegmentArray.h"
66 #include "AliTRDdigitsManager.h"
67 #include "AliTRDgeometry.h"
68 #include "AliTRDpadPlane.h"
69 #include "AliTRDcalibDB.h"
70 #include "AliTRDSimParam.h"
71 #include "AliTRDCommonParam.h"
72 #include "AliTRDfeeParam.h"
74 #include "Cal/AliTRDCalROC.h"
75 #include "Cal/AliTRDCalDet.h"
77 ClassImp(AliTRDdigitizer)
79 //_____________________________________________________________________________
80 AliTRDdigitizer::AliTRDdigitizer()
85 ,fSDigitsManagerList(0)
92 ,fMergeSignalOnly(kFALSE)
105 // AliTRDdigitizer default constructor
112 //_____________________________________________________________________________
113 AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
114 :AliDigitizer(name,title)
118 ,fSDigitsManagerList(0)
125 ,fMergeSignalOnly(kFALSE)
138 // AliTRDdigitizer constructor
145 //_____________________________________________________________________________
146 AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
147 , const Text_t *name, const Text_t *title)
148 :AliDigitizer(manager,name,title)
152 ,fSDigitsManagerList(0)
159 ,fMergeSignalOnly(kFALSE)
172 // AliTRDdigitizer constructor
179 //_____________________________________________________________________________
180 AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
181 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
185 ,fSDigitsManagerList(0)
192 ,fMergeSignalOnly(kFALSE)
205 // AliTRDdigitizer constructor
212 //_____________________________________________________________________________
213 Bool_t AliTRDdigitizer::Init()
216 // Initialize the digitizer with default values
222 fSDigitsManagerList = 0;
230 fMergeSignalOnly = kFALSE;
232 fTimeLastVdrift = -1;
238 fDiffLastVdrift = -1;
241 fLorentzFactor = 0.0;
243 return AliDigitizer::Init();
247 //_____________________________________________________________________________
248 AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
253 ,fSDigitsManagerList(0)
258 ,fCompress(d.fCompress)
259 ,fSDigits(d.fSDigits)
260 ,fMergeSignalOnly(d.fMergeSignalOnly)
273 // AliTRDdigitizer copy constructor
276 // Do not copy timestructs, just invalidate lastvdrift.
277 // Next time they are requested, they get recalculated
278 if (((AliTRDdigitizer &) d).fTimeStruct1) {
279 delete [] ((AliTRDdigitizer &) d).fTimeStruct1;
280 ((AliTRDdigitizer &) d).fTimeStruct1 = 0;
282 if (((AliTRDdigitizer &) d).fTimeStruct2) {
283 delete [] ((AliTRDdigitizer &) d).fTimeStruct2;
284 ((AliTRDdigitizer &) d).fTimeStruct2 = 0;
289 //_____________________________________________________________________________
290 AliTRDdigitizer::~AliTRDdigitizer()
293 // AliTRDdigitizer destructor
296 if (fDigitsManager) {
297 delete fDigitsManager;
301 if (fDigitsManager) {
302 delete fSDigitsManager;
306 if (fSDigitsManagerList) {
307 fSDigitsManagerList->Delete();
308 delete fSDigitsManagerList;
309 fSDigitsManagerList = 0;
318 delete [] fTimeStruct1;
323 delete [] fTimeStruct2;
334 //_____________________________________________________________________________
335 AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
338 // Assignment operator
342 ((AliTRDdigitizer &) d).Copy(*this);
349 //_____________________________________________________________________________
350 void AliTRDdigitizer::Copy(TObject &d) const
356 ((AliTRDdigitizer &) d).fRunLoader = 0;
357 ((AliTRDdigitizer &) d).fDigitsManager = 0;
358 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
359 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
360 ((AliTRDdigitizer &) d).fTRD = 0;
361 ((AliTRDdigitizer &) d).fGeo = 0;
362 ((AliTRDdigitizer &) d).fEvent = 0;
363 ((AliTRDdigitizer &) d).fMasks = 0;
364 ((AliTRDdigitizer &) d).fCompress = fCompress;
365 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
366 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
368 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
370 // Do not copy timestructs, just invalidate lastvdrift.
371 // Next time they are requested, they get recalculated
372 if (target.fTimeStruct1) {
373 delete [] target.fTimeStruct1;
374 target.fTimeStruct1 = 0;
376 if (target.fTimeStruct2) {
377 delete [] target.fTimeStruct2;
378 target.fTimeStruct2 = 0;
380 target.fTimeLastVdrift = -1;
384 //_____________________________________________________________________________
385 void AliTRDdigitizer::Exec(Option_t *option)
388 // Executes the merging
393 AliTRDdigitsManager *sdigitsManager;
395 TString optionString = option;
396 if (optionString.Contains("deb")) {
397 AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
398 AliInfo("Called with debug option");
401 // The AliRoot file is already connected by the manager
402 AliRunLoader *inrl = 0x0;
405 AliDebug(1,"AliRun object found on file.");
408 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
410 gAlice = inrl->GetAliRun();
412 AliError("Could not find AliRun object.")
417 Int_t nInput = fManager->GetNinputs();
418 fMasks = new Int_t[nInput];
419 for (iInput = 0; iInput < nInput; iInput++) {
420 fMasks[iInput] = fManager->GetMask(iInput);
427 AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
429 if (InitDetector()) {
431 AliLoader *ogime = orl->GetLoader("TRDLoader");
435 // If we produce SDigits
436 tree = ogime->TreeS();
438 ogime->MakeTree("S");
439 tree = ogime->TreeS();
443 // If we produce Digits
444 tree = ogime->TreeD();
446 ogime->MakeTree("D");
447 tree = ogime->TreeD();
455 for (iInput = 0; iInput < nInput; iInput++) {
457 AliDebug(1,Form("Add input stream %d",iInput));
459 // Check if the input tree exists
460 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
461 AliLoader *gime = inrl->GetLoader("TRDLoader");
463 TTree *treees = gime->TreeS();
465 if (gime->LoadSDigits()) {
466 AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
469 treees = gime->TreeS();
473 AliError(Form("Input stream %d does not exist",iInput));
477 // Read the s-digits via digits manager
478 sdigitsManager = new AliTRDdigitsManager();
479 sdigitsManager->SetSDigits(kTRUE);
481 AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
482 AliLoader *gimme = rl->GetLoader("TRDLoader");
483 if (!gimme->TreeS()) {
484 gimme->LoadSDigits();
486 sdigitsManager->ReadDigits(gimme->TreeS());
488 // Add the s-digits to the input list
489 AddSDigitsManager(sdigitsManager);
493 // Convert the s-digits to normal digits
494 AliDebug(1,"Do the conversion");
498 AliDebug(1,"Write the digits");
499 fDigitsManager->WriteDigits();
506 DeleteSDigitsManager();
510 //_____________________________________________________________________________
511 Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
514 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
516 // Connect the AliRoot file containing Geometry, Kine, and Hits
519 TString evfoldname = AliConfig::GetDefaultEventFolderName();
521 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
523 fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
526 AliError(Form("Can not open session for file %s.",file));
530 if (!fRunLoader->GetAliRun()) {
531 fRunLoader->LoadgAlice();
533 gAlice = fRunLoader->GetAliRun();
536 AliDebug(1,"AliRun object found on file.");
539 AliError("Could not find AliRun object.");
545 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
547 AliError("Can not get TRD loader from Run Loader");
551 if (InitDetector()) {
554 // If we produce SDigits
555 tree = loader->TreeS();
557 loader->MakeTree("S");
558 tree = loader->TreeS();
562 // If we produce Digits
563 tree = loader->TreeD();
565 loader->MakeTree("D");
566 tree = loader->TreeD();
569 return MakeBranch(tree);
577 //_____________________________________________________________________________
578 Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, Int_t nEvent)
581 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
583 // Connect the AliRoot file containing Geometry, Kine, and Hits
586 fRunLoader = runLoader;
588 AliError("RunLoader does not exist");
592 if (!fRunLoader->GetAliRun()) {
593 fRunLoader->LoadgAlice();
595 gAlice = fRunLoader->GetAliRun();
598 AliDebug(1,"AliRun object found on file.");
601 AliError("Could not find AliRun object.");
607 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
609 AliError("Can not get TRD loader from Run Loader");
613 if (InitDetector()) {
616 // If we produce SDigits
617 tree = loader->TreeS();
619 loader->MakeTree("S");
620 tree = loader->TreeS();
624 // If we produce Digits
625 tree = loader->TreeD();
627 loader->MakeTree("D");
628 tree = loader->TreeD();
631 return MakeBranch(tree);
639 //_____________________________________________________________________________
640 Bool_t AliTRDdigitizer::InitDetector()
643 // Sets the pointer to the TRD detector and the geometry
646 // Get the pointer to the detector class and check for version 1
647 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
649 AliFatal("No TRD module found");
652 if (fTRD->IsVersion() != 1) {
653 AliFatal("TRD must be version 1 (slow simulator)");
658 fGeo = new AliTRDgeometry();
660 // Create a digits manager
661 if (fDigitsManager) {
662 delete fDigitsManager;
664 fDigitsManager = new AliTRDdigitsManager();
665 fDigitsManager->SetSDigits(fSDigits);
666 fDigitsManager->CreateArrays();
667 fDigitsManager->SetEvent(fEvent);
669 // The list for the input s-digits manager to be merged
670 if (fSDigitsManagerList) {
671 fSDigitsManagerList->Delete();
674 fSDigitsManagerList = new TList();
681 //_____________________________________________________________________________
682 Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
685 // Create the branches for the digits array
688 return fDigitsManager->MakeBranch(tree);
692 //_____________________________________________________________________________
693 void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
696 // Add a digits manager for s-digits to the input list.
699 fSDigitsManagerList->Add(man);
703 //_____________________________________________________________________________
704 void AliTRDdigitizer::DeleteSDigitsManager()
707 // Removes digits manager from the input list.
710 fSDigitsManagerList->Delete();
714 //_____________________________________________________________________________
715 Bool_t AliTRDdigitizer::MakeDigits()
721 AliDebug(1,"Start creating digits");
724 AliError("No geometry defined");
728 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
730 AliFatal("Could not get calibration object");
734 const Int_t kNdet = AliTRDgeometry::Ndet();
736 Float_t **hits = new Float_t*[kNdet];
737 Int_t *nhit = new Int_t[kNdet];
739 AliTRDdataArrayF *signals = 0x0;
741 // Sort all hits according to detector number
742 if (!SortHits(hits,nhit)) {
743 AliError("Sorting hits failed");
747 // Loop through all detectors
748 for (Int_t det = 0; det < kNdet; det++) {
750 // Detectors that are switched off, not installed, etc.
751 if (( calibration->IsChamberInstalled(det)) &&
752 (!calibration->IsChamberMasked(det)) &&
753 ( fGeo->ChamberInGeometry(det)) &&
756 signals = new AliTRDdataArrayF();
758 // Convert the hits of the current detector to detector signals
759 if (!ConvertHits(det,hits[det],nhit[det],signals)) {
760 AliError(Form("Conversion of hits failed for detector=%d",det));
763 // Convert the detector signals to digits or s-digits
764 if (!ConvertSignals(det,signals)) {
765 AliError(Form("Conversion of signals failed for detector=%d",det));
769 // Delete the signals array
773 } // if: detector status
786 //_____________________________________________________________________________
787 Bool_t AliTRDdigitizer::SortHits(Float_t **hits, Int_t *nhit)
790 // Read all the hits and sorts them according to detector number
791 // in the output array <hits>.
794 AliDebug(1,"Start sorting hits");
796 const Int_t kNdet = AliTRDgeometry::Ndet();
797 // Size of the hit vector
798 const Int_t kNhit = 6;
803 Int_t *lhit = new Int_t[kNdet];
805 for (Int_t det = 0; det < kNdet; det++) {
811 AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
812 if (!gimme->TreeH()) {
815 TTree *hitTree = gimme->TreeH();
816 if (hitTree == 0x0) {
817 AliError("Can not get TreeH");
820 fTRD->SetTreeAddress();
822 // Get the number of entries in the hit tree
823 // (Number of primary particles creating a hit somewhere)
824 Int_t nTrk = (Int_t) hitTree->GetEntries();
825 AliDebug(1,Form("Found %d tracks",nTrk));
827 // Loop through all the tracks in the tree
828 for (Int_t iTrk = 0; iTrk < nTrk; iTrk++) {
831 hitTree->GetEvent(iTrk);
834 AliError(Form("No hits array for track = %d",iTrk));
838 // Number of hits for this track
839 nhitTrk = fTRD->Hits()->GetEntriesFast();
842 // Loop through the TRD hits
843 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
848 // Don't analyze test hits
849 if (((Int_t) hit->GetCharge()) != 0) {
851 Int_t trk = hit->Track();
852 Int_t det = hit->GetDetector();
853 Int_t q = hit->GetCharge();
854 Float_t x = hit->X();
855 Float_t y = hit->Y();
856 Float_t z = hit->Z();
857 Float_t time = hit->GetTime();
859 if (nhit[det] == lhit[det]) {
860 // Inititialization of new detector
861 xyz = new Float_t[kNhit*(nhitTrk+lhit[det])];
863 memcpy(xyz,hits[det],sizeof(Float_t)*kNhit*lhit[det]);
866 lhit[det] += nhitTrk;
872 xyz[nhit[det]*kNhit+0] = x;
873 xyz[nhit[det]*kNhit+1] = y;
874 xyz[nhit[det]*kNhit+2] = z;
875 xyz[nhit[det]*kNhit+3] = q;
876 xyz[nhit[det]*kNhit+4] = trk;
877 xyz[nhit[det]*kNhit+5] = time;
882 hit = (AliTRDhit *) fTRD->NextHit();
884 } // for: hits of one track
894 //_____________________________________________________________________________
895 Bool_t AliTRDdigitizer::ConvertHits(Int_t det, Float_t *hits, Int_t nhit
896 , AliTRDdataArrayF *signals)
899 // Converts the detectorwise sorted hits to detector signals
902 AliDebug(1,Form("Start converting hits for detector=%d (nhits=%d)",det,nhit));
904 // Number of pads included in the pad response
905 const Int_t kNpad = 3;
906 // Number of track dictionary arrays
907 const Int_t kNdict = AliTRDdigitsManager::kNDict;
908 // Size of the hit vector
909 const Int_t kNhit = 6;
911 // Width of the amplification region
912 const Float_t kAmWidth = AliTRDgeometry::AmThick();
913 // Width of the drift region
914 const Float_t kDrWidth = AliTRDgeometry::DrThick();
915 // Drift + amplification region
916 const Float_t kDrMin = - 0.5 * kAmWidth;
917 const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
921 Int_t timeBinTRFend = 1;
925 Double_t padSignal[kNpad];
926 Double_t signalOld[kNpad];
928 AliTRDdataArrayI *dictionary[kNdict];
930 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
931 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
932 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
935 AliFatal("Could not get common parameterss");
939 AliFatal("Could not get simulation parameters");
943 AliFatal("Could not get calibration object");
947 // Get the detector wise calibration objects
948 AliTRDCalROC *calVdriftROC = 0;
949 Float_t calVdriftDetValue = 0.0;
950 const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
951 AliTRDCalROC *calT0ROC = 0;
952 Float_t calT0DetValue = 0.0;
953 const AliTRDCalDet *calT0Det = calibration->GetT0Det();
955 if (simParam->TRFOn()) {
956 timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
957 * commonParam->GetSamplingFrequency())) - 1;
960 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
961 Float_t samplingRate = commonParam->GetSamplingFrequency();
962 Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
964 AliTRDpadPlane *padPlane = fGeo->GetPadPlane(det);
965 Int_t layer = fGeo->GetLayer(det);
966 Float_t row0 = padPlane->GetRow0ROC();
967 Int_t nRowMax = padPlane->GetNrows();
968 Int_t nColMax = padPlane->GetNcols();
970 // Create a new array for the signals
971 signals->Allocate(nRowMax,nColMax,nTimeTotal);
973 // Create a new array for the dictionary
974 for (dict = 0; dict < kNdict; dict++) {
975 dictionary[dict] = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
976 dictionary[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
979 // Loop through the hits in this detector
980 for (Int_t hit = 0; hit < nhit; hit++) {
982 pos[0] = hits[hit*kNhit+0];
983 pos[1] = hits[hit*kNhit+1];
984 pos[2] = hits[hit*kNhit+2];
985 Float_t q = hits[hit*kNhit+3];
986 Float_t hittime = hits[hit*kNhit+5];
987 Int_t track = ((Int_t) hits[hit*kNhit+4]);
991 // Find the current volume with the geo manager
992 gGeoManager->SetCurrentPoint(pos);
993 gGeoManager->FindNode();
994 if (strstr(gGeoManager->GetPath(),"/UK")) {
998 // Get the calibration objects
999 calVdriftROC = calibration->GetVdriftROC(det);
1000 calVdriftDetValue = calVdriftDet->GetValue(det);
1001 calT0ROC = calibration->GetT0ROC(det);
1002 calT0DetValue = calT0Det->GetValue(det);
1004 // Go to the local coordinate system:
1005 // loc[0] - col direction in amplification or driftvolume
1006 // loc[1] - row direction in amplification or driftvolume
1007 // loc[2] - time direction in amplification or driftvolume
1008 gGeoManager->MasterToLocal(pos,loc);
1010 // Relative to middle of amplification region
1011 loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
1014 // The driftlength [cm] (w/o diffusion yet !).
1015 // It is negative if the hit is between pad plane and anode wires.
1016 Double_t driftlength = -1.0 * loc[2];
1018 // Stupid patch to take care of TR photons that are absorbed
1019 // outside the chamber volume. A real fix would actually need
1020 // a more clever implementation of the TR hit generation
1022 if ((loc[1] < padPlane->GetRowEndROC()) ||
1023 (loc[1] > padPlane->GetRow0ROC())) {
1026 if ((driftlength < kDrMin) ||
1027 (driftlength > kDrMax)) {
1032 // Get row and col of unsmeared electron to retrieve drift velocity
1033 // The pad row (z-direction)
1034 Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
1038 Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
1039 // The pad column (rphi-direction)
1040 Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
1041 Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
1045 Double_t colOffset = 0.0;
1047 // Normalized drift length
1048 Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1049 Double_t absdriftlength = TMath::Abs(driftlength);
1050 if (commonParam->ExBOn()) {
1051 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
1054 // Loop over all electrons of this hit
1055 // TR photons produce hits with negative charge
1056 Int_t nEl = ((Int_t) TMath::Abs(q));
1057 for (Int_t iEl = 0; iEl < nEl; iEl++) {
1059 // Now the real local coordinate system of the ROC
1060 // column direction: locC
1061 // row direction: locR
1062 // time direction: locT
1063 // locR and locC are identical to the coordinates of the corresponding
1064 // volumina of the drift or amplification region.
1065 // locT is defined relative to the wire plane (i.e. middle of amplification
1066 // region), meaming locT = 0, and is negative for hits coming from the
1068 Double_t locC = loc[0];
1069 Double_t locR = loc[1];
1070 Double_t locT = loc[2];
1072 // Electron attachment
1073 if (simParam->ElAttachOn()) {
1074 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
1079 // Apply the diffusion smearing
1080 if (simParam->DiffusionOn()) {
1081 if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
1086 // Apply E x B effects (depends on drift direction)
1087 if (commonParam->ExBOn()) {
1088 if (!(ExB(driftvelocity,driftlength,locC))) {
1093 // The electron position after diffusion and ExB in pad coordinates.
1094 // The pad row (z-direction)
1095 rowE = padPlane->GetPadRowNumberROC(locR);
1096 if (rowE < 0) continue;
1097 rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
1099 // The pad column (rphi-direction)
1100 offsetTilt = padPlane->GetTiltOffset(rowOffset);
1101 colE = padPlane->GetPadColNumber(locC+offsetTilt);
1102 if (colE < 0) continue;
1103 colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
1105 // Also re-retrieve drift velocity because col and row may have changed
1106 driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1107 Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
1109 // Convert the position to drift time [mus], using either constant drift velocity or
1110 // time structure of drift cells (non-isochronity, GARFIELD calculation).
1111 // Also add absolute time of hits to take pile-up events into account properly
1113 if (simParam->TimeStructOn()) {
1114 // Get z-position with respect to anode wire
1115 Double_t zz = row0 - locR + simParam->GetAnodeWireOffset();
1116 zz -= ((Int_t)(2 * zz)) / 2.0;
1120 // Use drift time map (GARFIELD)
1121 drifttime = TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
1125 // Use constant drift velocity
1126 drifttime = -1.0 * locT / driftvelocity
1130 // Apply the gas gain including fluctuations
1131 Double_t ggRndm = 0.0;
1133 ggRndm = gRandom->Rndm();
1134 } while (ggRndm <= 0);
1135 Double_t signal = -(simParam->GetGasGain()) * TMath::Log(ggRndm);
1137 // Apply the pad response
1138 if (simParam->PRFOn()) {
1139 // The distance of the electron to the center of the pad
1140 // in units of pad width
1141 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
1142 / padPlane->GetColSize(colE);
1143 // This is a fixed parametrization, i.e. not dependent on
1144 // calibration values !
1145 if (!(calibration->PadResponse(signal,dist,layer,padSignal))) continue;
1149 padSignal[1] = signal;
1153 // The time bin (always positive), with t0 distortion
1154 Double_t timeBinIdeal = drifttime * samplingRate + t0;
1156 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
1157 timeBinIdeal = 2 * nTimeTotal;
1159 Int_t timeBinTruncated = ((Int_t) timeBinIdeal);
1160 // The distance of the position to the middle of the timebin
1161 Double_t timeOffset = ((Float_t) timeBinTruncated
1162 + 0.5 - timeBinIdeal) / samplingRate;
1164 // Sample the time response inside the drift region
1165 // + additional time bins before and after.
1166 // The sampling is done always in the middle of the time bin
1167 for (Int_t iTimeBin = TMath::Max(timeBinTruncated,0)
1168 ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
1171 // Apply the time response
1172 Double_t timeResponse = 1.0;
1173 Double_t crossTalk = 0.0;
1174 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
1175 if (simParam->TRFOn()) {
1176 timeResponse = simParam->TimeResponse(time);
1178 if (simParam->CTOn()) {
1179 crossTalk = simParam->CrossTalk(time);
1186 for (iPad = 0; iPad < kNpad; iPad++) {
1188 Int_t colPos = colE + iPad - 1;
1189 if (colPos < 0) continue;
1190 if (colPos >= nColMax) break;
1193 signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iTimeBin);
1195 if (colPos != colE) {
1196 // Cross talk added to non-central pads
1197 signalOld[iPad] += padSignal[iPad]
1198 * (timeResponse + crossTalk);
1201 // W/o cross talk at central pad
1202 signalOld[iPad] += padSignal[iPad]
1206 signals->SetDataUnchecked(rowE,colPos,iTimeBin,signalOld[iPad]);
1208 // Store the track index in the dictionary
1209 // Note: We store index+1 in order to allow the array to be compressed
1210 if (signalOld[iPad] > 0.0) {
1211 for (dict = 0; dict < kNdict; dict++) {
1212 Int_t oldTrack = dictionary[dict]->GetDataUnchecked(rowE
1215 if (oldTrack == track+1) break;
1216 if (oldTrack == 0) {
1217 dictionary[dict]->SetDataUnchecked(rowE,colPos,iTimeBin,track+1);
1225 } // Loop: time bins
1227 } // Loop: electrons of a single hit
1231 AliDebug(2,Form("Finished analyzing %d hits",nhit));
1237 //_____________________________________________________________________________
1238 Bool_t AliTRDdigitizer::ConvertSignals(Int_t det, AliTRDdataArrayF *signals)
1241 // Convert signals to digits
1244 AliDebug(1,Form("Start converting the signals for detector %d",det));
1247 // Convert the signal array to s-digits
1248 if (!Signal2SDigits(det,signals)) {
1253 // Convert the signal array to digits
1254 if (!Signal2ADC(det,signals)) {
1259 // Compress the arrays
1260 CompressOutputArrays(det);
1266 //_____________________________________________________________________________
1267 Bool_t AliTRDdigitizer::Signal2ADC(Int_t det, AliTRDdataArrayF *signals)
1270 // Converts the sampled electron signals to ADC values for a given chamber
1273 AliDebug(1,Form("Start converting signals to ADC values for detector=%d",det));
1275 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1277 AliFatal("Could not get calibration object");
1281 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
1283 AliFatal("Could not get simulation parameters");
1287 // Converts number of electrons to fC
1288 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
1291 Double_t coupling = simParam->GetPadCoupling()
1292 * simParam->GetTimeCoupling();
1293 // Electronics conversion factor
1294 Double_t convert = kEl2fC
1295 * simParam->GetChipGain();
1296 // ADC conversion factor
1297 Double_t adcConvert = simParam->GetADCoutRange()
1298 / simParam->GetADCinRange();
1299 // The electronics baseline in mV
1300 Double_t baseline = simParam->GetADCbaseline()
1302 // The electronics baseline in electrons
1303 Double_t baselineEl = baseline
1310 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1311 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1312 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1314 // The gainfactor calibration objects
1315 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
1316 AliTRDCalROC *calGainFactorROC = 0;
1317 Float_t calGainFactorDetValue = 0.0;
1319 AliTRDdataArrayS *digits = 0x0;
1322 AliError(Form("Signals array for detector %d does not exist\n",det));
1325 if (signals->HasData()) {
1326 // Expand the container if neccessary
1330 // Create missing containers
1331 signals->Allocate(nRowMax,nColMax,nTimeTotal);
1334 // Get the container for the digits of this detector
1335 if (fDigitsManager->HasSDigits()) {
1336 AliError("Digits manager has s-digits");
1339 digits = (AliTRDdataArrayS *) fDigitsManager->GetDigits(det);
1340 // Allocate memory space for the digits buffer
1341 if (!digits->HasData()) {
1342 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1345 // Get the calibration objects
1346 calGainFactorROC = calibration->GetGainFactorROC(det);
1347 calGainFactorDetValue = calGainFactorDet->GetValue(det);
1349 // Create the digits for this chamber
1350 for (row = 0; row < nRowMax; row++ ) {
1351 for (col = 0; col < nColMax; col++ ) {
1353 // Check whether pad is masked
1354 // Bridged pads are not considered yet!!!
1355 if (calibration->IsPadMasked(det,col,row)) {
1360 Float_t padgain = calGainFactorDetValue
1361 * calGainFactorROC->GetValue(col,row);
1363 AliError(Form("Not a valid gain %f, %d %d %d",padgain,det,col,row));
1366 for (time = 0; time < nTimeTotal; time++) {
1368 // Get the signal amplitude
1369 Float_t signalAmp = signals->GetDataUnchecked(row,col,time);
1370 // Pad and time coupling
1371 signalAmp *= coupling;
1373 signalAmp *= padgain;
1375 // Add the noise, starting from minus ADC baseline in electrons
1376 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
1380 signalAmp *= convert;
1381 // Add ADC baseline in mV
1382 signalAmp += baseline;
1384 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
1385 // signal is larger than fADCinRange
1387 if (signalAmp >= simParam->GetADCinRange()) {
1388 adc = ((Short_t) simParam->GetADCoutRange());
1391 adc = TMath::Nint(signalAmp * adcConvert);
1394 // Store the amplitude of the digit if above threshold
1396 // Use temporarily a threshold to reduce the digits file size
1397 if (adc > (simParam->GetADCbaseline() + 2)) {
1398 digits->SetDataUnchecked(row,col,time,adc);
1409 //_____________________________________________________________________________
1410 Bool_t AliTRDdigitizer::Signal2SDigits(Int_t det, AliTRDdataArrayF *signals)
1413 // Converts the sampled electron signals to s-digits
1416 AliDebug(1,Form("Start converting signals to s-digits for detector=%d",det));
1418 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1420 AliFatal("Could not get calibration object");
1428 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1429 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1430 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1432 // Get the container for the digits of this detector
1433 if (!fDigitsManager->HasSDigits()) {
1434 AliError("Digits manager has no s-digits");
1437 AliTRDdataArrayF *digits = (AliTRDdataArrayF *) fDigitsManager->GetDigits(det);
1438 // Allocate memory space for the digits buffer
1439 if (!digits->HasData()) {
1440 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1443 // Create the sdigits for this chamber
1444 for (row = 0; row < nRowMax; row++ ) {
1445 for (col = 0; col < nColMax; col++ ) {
1446 for (time = 0; time < nTimeTotal; time++) {
1447 digits->SetDataUnchecked(row
1450 ,signals->GetDataUnchecked(row,col,time));
1459 //_____________________________________________________________________________
1460 Bool_t AliTRDdigitizer::SDigits2Digits()
1463 // Merges the input s-digits and converts them to normal digits
1466 if (!MergeSDigits()) {
1470 return ConvertSDigits();
1474 //_____________________________________________________________________________
1475 Bool_t AliTRDdigitizer::MergeSDigits()
1478 // Merges the input s-digits:
1479 // - The amplitude of the different inputs are summed up.
1480 // - Of the track IDs from the input dictionaries only one is
1481 // kept for each input. This works for maximal 3 different merged inputs.
1484 // Number of track dictionary arrays
1485 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1487 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
1489 AliFatal("Could not get simulation parameters");
1493 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1495 AliFatal("Could not get calibration object");
1502 AliTRDdataArrayF *digitsA;
1503 AliTRDdataArrayF *digitsB;
1504 AliTRDdataArrayI *dictionaryA[kNDict];
1505 AliTRDdataArrayI *dictionaryB[kNDict];
1506 AliTRDdigitsManager *mergeSDigitsManager = 0x0;
1508 // Get the first s-digits
1509 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
1510 if (!fSDigitsManager) {
1511 AliError("No SDigits manager");
1515 // Loop through the other sets of s-digits
1516 mergeSDigitsManager = (AliTRDdigitsManager *)
1517 fSDigitsManagerList->After(fSDigitsManager);
1519 if (mergeSDigitsManager) {
1520 AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
1523 AliDebug(1,"Only one input file.");
1526 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1529 while (mergeSDigitsManager) {
1533 // Loop through the detectors
1534 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1536 Int_t nRowMax = fGeo->GetPadPlane(iDet)->GetNrows();
1537 Int_t nColMax = fGeo->GetPadPlane(iDet)->GetNcols();
1539 // Loop through the pixels of one detector and add the signals
1540 digitsA = (AliTRDdataArrayF *) fSDigitsManager->GetDigits(iDet);
1541 digitsB = (AliTRDdataArrayF *) mergeSDigitsManager->GetDigits(iDet);
1543 if (!digitsA->GetDataSize()) continue;
1545 if (!digitsB->GetDataSize()) continue;
1546 for (iDict = 0; iDict < kNDict; iDict++) {
1547 dictionaryA[iDict] = (AliTRDdataArrayI *) fSDigitsManager->GetDictionary(iDet,iDict);
1548 dictionaryB[iDict] = (AliTRDdataArrayI *) mergeSDigitsManager->GetDictionary(iDet,iDict);
1549 dictionaryA[iDict]->Expand();
1550 dictionaryB[iDict]->Expand();
1553 // Merge only detectors that contain a signal
1554 Bool_t doMerge = kTRUE;
1555 if (fMergeSignalOnly) {
1556 if (digitsA->GetOverThreshold(0) == 0) {
1563 AliDebug(1,Form("Merge detector %d of input no.%d",iDet,iMerge+1));
1565 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1566 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1567 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1569 // Add the amplitudes of the summable digits
1570 Float_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
1571 Float_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
1573 digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
1575 // Add the mask to the track id if defined.
1576 for (iDict = 0; iDict < kNDict; iDict++) {
1577 Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1578 if ((fMasks) && (trackB > 0)) {
1579 for (jDict = 0; jDict < kNDict; jDict++) {
1580 Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1582 trackA = trackB + fMasks[iMerge];
1583 dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
1584 } // if: track A == 0
1586 } // if: fMasks and trackB > 0
1595 mergeSDigitsManager->RemoveDigits(iDet);
1596 mergeSDigitsManager->RemoveDictionaries(iDet);
1599 digitsA->Compress(1,0);
1600 for (iDict = 0; iDict < kNDict; iDict++) {
1601 dictionaryA[iDict]->Compress(1,0);
1607 // The next set of s-digits
1608 mergeSDigitsManager = (AliTRDdigitsManager *)
1609 fSDigitsManagerList->After(mergeSDigitsManager);
1611 } // while: mergeDigitsManagers
1617 //_____________________________________________________________________________
1618 Bool_t AliTRDdigitizer::ConvertSDigits()
1621 // Converts s-digits to normal digits
1624 AliTRDdataArrayF *digitsIn = 0x0;
1626 if (!fSDigitsManager->HasSDigits()) {
1627 AliError("No s-digits in digits manager");
1631 // Loop through the detectors
1632 for (Int_t det = 0; det < AliTRDgeometry::Ndet(); det++) {
1634 // Get the merged s-digits (signals)
1635 digitsIn = (AliTRDdataArrayF *) fSDigitsManager->GetDigits(det);
1636 if (!digitsIn->HasData()) {
1637 AliDebug(2,Form("No digits for det=%d",det));
1641 // Convert the merged sdigits to digits
1642 if (!Signal2ADC(det,digitsIn)) {
1646 // Copy the dictionary information to the output array
1647 if (!CopyDictionary(det)) {
1652 fSDigitsManager->RemoveDigits(det);
1653 fSDigitsManager->RemoveDictionaries(det);
1655 // Compress the arrays
1656 CompressOutputArrays(det);
1658 } // for: detector numbers
1664 //_____________________________________________________________________________
1665 Bool_t AliTRDdigitizer::CopyDictionary(Int_t det)
1668 // Copies the dictionary information from the s-digits arrays
1669 // to the output arrays
1672 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1674 AliFatal("Could not get calibration object");
1678 AliDebug(1,Form("Start copying dictionaries for detector=%d",det));
1680 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1681 AliTRDdataArrayI *dictionaryIn[kNDict];
1682 AliTRDdataArrayI *dictionaryOut[kNDict];
1684 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1685 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1686 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1693 for (dict = 0; dict < kNDict; dict++) {
1695 dictionaryIn[dict] = (AliTRDdataArrayI *) fSDigitsManager->GetDictionary(det,dict);
1696 dictionaryIn[dict]->Expand();
1697 dictionaryOut[dict] = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
1698 dictionaryOut[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
1700 for (row = 0; row < nRowMax; row++) {
1701 for (col = 0; col < nColMax; col++) {
1702 for (time = 0; time < nTimeTotal; time++) {
1704 Int_t track = dictionaryIn[dict]->GetDataUnchecked(row,col,time);
1705 dictionaryOut[dict]->SetDataUnchecked(row,col,time,track);
1711 } // for: dictionaries
1717 //_____________________________________________________________________________
1718 void AliTRDdigitizer::CompressOutputArrays(Int_t det)
1721 // Compress the output arrays
1724 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1726 AliTRDdataArrayS *digits = 0x0;
1727 AliTRDdataArrayI *dictionary = 0x0;
1731 digits = (AliTRDdataArrayS *) fDigitsManager->GetDigits(det);
1732 digits->Compress(1,0);
1733 for (Int_t dict = 0; dict < kNDict; dict++) {
1734 dictionary = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
1735 dictionary->Compress(1,0);
1743 //_____________________________________________________________________________
1744 Bool_t AliTRDdigitizer::WriteDigits() const
1747 // Writes out the TRD-digits and the dictionaries
1751 fRunLoader->CdGAFile();
1753 // Store the digits and the dictionary in the tree
1754 return fDigitsManager->WriteDigits();
1758 //_____________________________________________________________________________
1759 void AliTRDdigitizer::InitOutput(Int_t iEvent)
1762 // Initializes the output branches
1768 AliError("Run Loader is NULL");
1772 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
1774 AliError("Can not get TRD loader from Run Loader");
1781 // If we produce SDigits
1782 tree = loader->TreeS();
1784 loader->MakeTree("S");
1785 tree = loader->TreeS();
1789 // If we produce Digits
1790 tree = loader->TreeD();
1792 loader->MakeTree("D");
1793 tree = loader->TreeD();
1797 fDigitsManager->SetEvent(iEvent);
1798 fDigitsManager->MakeBranch(tree);
1802 //_____________________________________________________________________________
1803 Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1806 // Applies the time structure of the drift cells (by C.Lippmann).
1807 // The drift time of electrons to the anode wires depends on the
1808 // distance to the wire (z) and on the position in the drift region.
1811 // dist = radial distance from (cathode) pad plane [cm]
1812 // z = distance from anode wire (parallel to cathode planes) [cm]
1815 // tdrift = the drift time of an electron at the given position
1817 // We interpolate between the drift time values at the two drift
1818 // velocities fVDlo and fVDhi, being smaller and larger than
1819 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1820 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1823 SampleTimeStruct(vdrift);
1826 Int_t r1 = (Int_t)(10 * dist);
1828 if (r1 > 37) r1 = 37;
1831 if (r2 > 37) r2 = 37;
1832 const Int_t kz1 = ((Int_t)(100 * z / 2.5));
1833 const Int_t kz2 = kz1 + 1;
1839 AliWarning(Form("Indices out of range: dist=%.2f, z=%.2f, r1=%d, kz1=%d"
1843 const Float_t ky111 = fTimeStruct1[r1+38*kz1];
1844 const Float_t ky221 = ((r2 <= 37) && (kz2 <= 10))
1845 ? fTimeStruct1[r2+38*kz2]
1846 : fTimeStruct1[37+38*10];
1847 const Float_t ky121 = (kz2 <= 10)
1848 ? fTimeStruct1[r1+38*kz2]
1849 : fTimeStruct1[r1+38*10];
1850 const Float_t ky211 = (r2 <= 37)
1851 ? fTimeStruct1[r2+38*kz1]
1852 : fTimeStruct1[37+38*kz1];
1854 // 2D Interpolation, lower drift time map
1855 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1856 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1858 const Float_t ky112 = fTimeStruct2[r1+38*kz1];
1859 const Float_t ky222 = ((r2 <= 37) && (kz2 <= 10))
1860 ? fTimeStruct2[r2+38*kz2]
1861 : fTimeStruct2[37+38*10];
1862 const Float_t ky122 = (kz2 <= 10)
1863 ? fTimeStruct2[r1+38*kz2]
1864 : fTimeStruct2[r1+38*10];
1865 const Float_t ky212 = (r2 <= 37)
1866 ? fTimeStruct2[r2+38*kz1]
1867 : fTimeStruct2[37+38*kz1];
1869 // 2D Interpolation, larger drift time map
1870 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1871 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1873 // Dist now is the drift distance to the anode wires (negative if electrons are
1874 // between anode wire plane and cathode pad plane)
1875 dist -= AliTRDgeometry::AmThick() / 2.0;
1877 // Get the drift times for the drift velocities fVDlo and fVDhi
1878 const Float_t ktdrift1 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1879 ? (ky21 - ky11) * 100 * z / 2.5 + ky11 - (ky21 - ky11) * kz1
1881 const Float_t ktdrift2 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1882 ? (ky22 - ky12) * 100 * z / 2.5 + ky12 - (ky22 - ky12) * kz1
1885 // 1D Interpolation between the values at fVDlo and fVDhi
1886 Float_t a = (ktdrift2 - ktdrift1)
1888 Float_t b = ktdrift2 - a * fVDhi;
1890 return a * vdrift + b;
1894 //_____________________________________________________________________________
1895 void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1898 // Samples the timing structure of a drift cell
1899 // Drift Time data calculated with Garfield (by C.Lippmann)
1903 if (vdrift == fTimeLastVdrift) {
1906 fTimeLastVdrift = vdrift;
1908 // Drift time maps are saved for some drift velocity values (in drift region):
1919 if (vdrift < fVDsmp[0]) {
1920 AliWarning(Form("Drift Velocity too small (%.3f<%.3f)",vdrift,fVDsmp[0]));
1923 else if (vdrift > fVDsmp[7]) {
1924 AliWarning(Form("Drift Velocity too large (%.3f>%.3f)",vdrift,fVDsmp[6]));
1928 const Int_t ktimebin = 38;
1929 const Int_t kZbin = 11;
1931 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1932 Float_t time1500[ktimebin][kZbin] =
1933 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1934 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1935 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1936 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1937 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1938 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1939 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1940 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1941 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1942 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1943 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1944 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1945 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1946 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1947 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1948 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1949 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1950 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1951 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1952 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1953 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1954 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1955 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1956 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1957 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1958 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1959 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1960 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1961 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1962 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1963 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1964 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1965 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1966 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1967 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1968 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1969 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1970 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1971 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1972 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1973 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1974 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1975 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1976 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1977 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1978 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1979 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1980 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1981 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1982 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1983 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1984 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1985 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1986 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1987 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1988 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1989 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1990 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1991 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
1992 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
1993 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
1994 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
1995 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
1996 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
1997 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
1998 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
1999 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
2000 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
2001 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
2002 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
2003 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
2004 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
2005 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
2006 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
2007 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
2008 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
2010 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
2011 Float_t time1600[ktimebin][kZbin] =
2012 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
2013 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
2014 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
2015 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
2016 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
2017 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
2018 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
2019 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
2020 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
2021 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
2022 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
2023 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
2024 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
2025 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
2026 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
2027 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
2028 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
2029 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
2030 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
2031 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
2032 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
2033 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
2034 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
2035 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
2036 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
2037 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
2038 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
2039 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
2040 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
2041 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
2042 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
2043 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
2044 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
2045 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
2046 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
2047 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
2048 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
2049 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
2050 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
2051 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
2052 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
2053 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
2054 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
2055 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
2056 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
2057 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
2058 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
2059 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
2060 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
2061 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
2062 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
2063 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
2064 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
2065 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
2066 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
2067 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
2068 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
2069 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
2070 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
2071 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
2072 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
2073 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
2074 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
2075 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
2076 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
2077 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
2078 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
2079 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
2080 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
2081 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
2082 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
2083 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
2084 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
2085 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
2086 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
2087 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
2089 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
2090 Float_t time1700[ktimebin][kZbin] =
2091 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
2092 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
2093 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
2094 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
2095 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
2096 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
2097 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
2098 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
2099 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
2100 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
2101 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
2102 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
2103 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
2104 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
2105 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
2106 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
2107 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
2108 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
2109 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
2110 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
2111 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
2112 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
2113 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
2114 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
2115 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
2116 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2117 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2118 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2119 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2120 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2121 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2122 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2123 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2124 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2125 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2126 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2127 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2128 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2129 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2130 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2131 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2132 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2133 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2134 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2135 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2136 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2137 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2138 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2139 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2140 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2141 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2142 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2143 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2144 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2145 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2146 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2147 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2148 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2149 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2150 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2151 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2152 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2153 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2154 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2155 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2156 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2157 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2158 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2159 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2160 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2161 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2162 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2163 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2164 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2165 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2166 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2168 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2169 Float_t time1800[ktimebin][kZbin] =
2170 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2171 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2172 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2173 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2174 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2175 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2176 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2177 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2178 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2179 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2180 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2181 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2182 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2183 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2184 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2185 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2186 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2187 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2188 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2189 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2190 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2191 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2192 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2193 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2194 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2195 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2196 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2197 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2198 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2199 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2200 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2201 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2202 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2203 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2204 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2205 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2206 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2207 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2208 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2209 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2210 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2211 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2212 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2213 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2214 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2215 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2216 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2217 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2218 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2219 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2220 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2221 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2222 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2223 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2224 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2225 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2226 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2227 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2228 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2229 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2230 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2231 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2232 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2233 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2234 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2235 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2236 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2237 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2238 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2239 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2240 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2241 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2242 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2243 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2244 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2245 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2247 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2248 Float_t time1900[ktimebin][kZbin] =
2249 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2250 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2251 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2252 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2253 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2254 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2255 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2256 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2257 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2258 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2259 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2260 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2261 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2262 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2263 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2264 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2265 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2266 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2267 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2268 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2269 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2270 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2271 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2272 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2273 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2274 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2275 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2276 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2277 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2278 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2279 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2280 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2281 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2282 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2283 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2284 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2285 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2286 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2287 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2288 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2289 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2290 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2291 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2292 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2293 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2294 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2295 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2296 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2297 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2298 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2299 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2300 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2301 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2302 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2303 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2304 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2305 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2306 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2307 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2308 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2309 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2310 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2311 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2312 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2313 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2314 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2315 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2316 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2317 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2318 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2319 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2320 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2321 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2322 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2323 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2324 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2326 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2327 Float_t time2000[ktimebin][kZbin] =
2328 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2329 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2330 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2331 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2332 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2333 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2334 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2335 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2336 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2337 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2338 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2339 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2340 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2341 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2342 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2343 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2344 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2345 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2346 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2347 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2348 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2349 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2350 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2351 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2352 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2353 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2354 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2355 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2356 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2357 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2358 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2359 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2360 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2361 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2362 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2363 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2364 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2365 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2366 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2367 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2368 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2369 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2370 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2371 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2372 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2373 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2374 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2375 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2376 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2377 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2378 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2379 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2380 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2381 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2382 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2383 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2384 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2385 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2386 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2387 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2388 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2389 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2390 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2391 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2392 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2393 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2394 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2395 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2396 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2397 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2398 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2399 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2400 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2401 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2402 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2403 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2405 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2406 Float_t time2100[ktimebin][kZbin] =
2407 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2408 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2409 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2410 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2411 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2412 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2413 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2414 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2415 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2416 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2417 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2418 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2419 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2420 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2421 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2422 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2423 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2424 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2425 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2426 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2427 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2428 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2429 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2430 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2431 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2432 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2433 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2434 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2435 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2436 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2437 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2438 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2439 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2440 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2441 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2442 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2443 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2444 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2445 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2446 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2447 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2448 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2449 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2450 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2451 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2452 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2453 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2454 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2455 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2456 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2457 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2458 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2459 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2460 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2461 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2462 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2463 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2464 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2465 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2466 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2467 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2468 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2469 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2470 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2471 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2472 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2473 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2474 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2475 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2476 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2477 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2478 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2479 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2480 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2481 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2482 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2484 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2485 Float_t time2200[ktimebin][kZbin] =
2486 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2487 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2488 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2489 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2490 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2491 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2492 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2493 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2494 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2495 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2496 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2497 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2498 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2499 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2500 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2501 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2502 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2503 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2504 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2505 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2506 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2507 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2508 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2509 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2510 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2511 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2512 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2513 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2514 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2515 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2516 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2517 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2518 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2519 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2520 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2521 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2522 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2523 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2524 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2525 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2526 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2527 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2528 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2529 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2530 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2531 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2532 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2533 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2534 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2535 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2536 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2537 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2538 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2539 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2540 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2541 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2542 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2543 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2544 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2545 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2546 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2547 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2548 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2549 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2550 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2551 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2552 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2553 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2554 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2555 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2556 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2557 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2558 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2559 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2560 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2561 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2564 delete [] fTimeStruct1;
2566 fTimeStruct1 = new Float_t[ktimebin*kZbin];
2569 delete [] fTimeStruct2;
2571 fTimeStruct2 = new Float_t[ktimebin*kZbin];
2573 for (Int_t ctrt = 0; ctrt < ktimebin; ctrt++) {
2574 for (Int_t ctrz = 0; ctrz < kZbin; ctrz++) {
2575 if (vdrift > fVDsmp[6]) {
2576 fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2577 fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2581 else if (vdrift > fVDsmp[5]) {
2582 fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2583 fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2587 else if (vdrift > fVDsmp[4]) {
2588 fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2589 fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2593 else if (vdrift > fVDsmp[3]) {
2594 fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2595 fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2599 else if (vdrift > fVDsmp[2]) {
2600 fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2601 fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2605 else if (vdrift > fVDsmp[1]) {
2606 fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2607 fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2611 else if (vdrift > (fVDsmp[0] - 1.0e-5)) {
2612 fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2613 fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2622 //_____________________________________________________________________________
2623 void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2626 // Recalculates the diffusion parameters
2629 if (vdrift == fDiffLastVdrift) {
2633 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
2635 AliFatal("Could not get simulation parameters");
2639 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
2641 AliFatal("Could not get common parameters");
2645 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
2647 AliFatal("Could not get calibration object");
2651 fDiffLastVdrift = vdrift;
2653 if (simParam->IsXenon()) {
2656 // Vd and B-field dependent diffusion and Lorentz angle
2659 // The magnetic field strength
2660 Double_t x[3] = { 0.0, 0.0, 0.0 };
2662 gAlice->Field(x,b); // b[] is in kilo Gauss
2663 Float_t field = b[2] * 0.1; // Tesla
2666 const Int_t kNbL = 5;
2667 Float_t p0L[kNbL] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2668 Float_t p1L[kNbL] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2669 Float_t p2L[kNbL] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2670 Float_t p3L[kNbL] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
2672 Int_t ibL = ((Int_t) (10 * (field - 0.15)));
2673 ibL = TMath::Max( 0,ibL);
2674 ibL = TMath::Min(kNbL,ibL);
2676 fDiffusionL = p0L[ibL]
2678 + p2L[ibL] * vdrift*vdrift
2679 + p3L[ibL] * vdrift*vdrift*vdrift;
2682 const Int_t kNbT = 5;
2683 Float_t p0T[kNbT] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2684 Float_t p1T[kNbT] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2685 Float_t p2T[kNbT] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2686 Float_t p3T[kNbT] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
2688 Int_t ibT= ((Int_t) (10 * (field - 0.15)));
2689 ibT = TMath::Max( 0,ibT);
2690 ibT = TMath::Min(kNbT,ibT);
2692 fDiffusionT = p0T[ibT]
2694 + p2T[ibT] * vdrift*vdrift
2695 + p3T[ibT] * vdrift*vdrift*vdrift;
2698 fOmegaTau = calibration->GetOmegaTau(vdrift,field);
2699 if (commonParam->ExBOn()) {
2700 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2703 fLorentzFactor = 1.0;
2707 else if (simParam->IsArgon()) {
2709 // Diffusion constants and Lorentz angle only for B = 0.5T
2710 fDiffusionL = 0.0182;
2711 fDiffusionT = 0.0159;
2712 fOmegaTau = 0.0219769;
2713 if (commonParam->ExBOn()) {
2714 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2717 fLorentzFactor = 1.0;
2724 //_____________________________________________________________________________
2725 Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2728 // Returns the longitudinal diffusion coefficient for a given drift
2729 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2730 // The values are according to a GARFIELD simulation.
2733 RecalcDiffusion(vdrift);
2739 //_____________________________________________________________________________
2740 Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2743 // Returns the transverse diffusion coefficient for a given drift
2744 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2745 // The values are according to a GARFIELD simulation.
2748 RecalcDiffusion(vdrift);
2754 //_____________________________________________________________________________
2755 Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
2756 , Double_t &lRow, Double_t &lCol, Double_t &lTime)
2759 // Applies the diffusion smearing to the position of a single electron.
2760 // Depends on absolute drift length.
2763 RecalcDiffusion(vdrift);
2765 Float_t driftSqrt = TMath::Sqrt(absdriftlength);
2766 Float_t sigmaT = driftSqrt * fDiffusionT;
2767 Float_t sigmaL = driftSqrt * fDiffusionL;
2768 lRow = gRandom->Gaus(lRow ,sigmaT);
2769 lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
2770 lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
2776 //_____________________________________________________________________________
2777 Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2780 // Returns the recalculated Lorentz factor
2783 RecalcDiffusion(vd);
2785 return fLorentzFactor;
2789 //_____________________________________________________________________________
2790 Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
2793 // Applies E x B effects to the position of a single electron.
2794 // Depends on signed drift length.
2797 RecalcDiffusion(vdrift);
2799 lCol = lCol + fOmegaTau * driftlength;