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 //_________________________________________________________________________
19 // This is a TTask that constructs SDigits out of Hits
20 // A Summable Digits is the "sum" of all hits in a pad
21 // Detector response has been simulated via the method
22 // SimulateDetectorResponse
24 //-- Authors: F. Pierella, A. De Caro
25 // Use case: see AliTOFhits2sdigits.C macro in the CVS
26 //////////////////////////////////////////////////////////////////////////////
29 #include <Riostream.h>
32 #include <TBenchmark.h>
37 #include <TParticle.h>
43 #include "AliDetector.h"
44 #include "AliLoader.h"
46 #include "AliRunLoader.h"
48 #include "AliTOFConstants.h"
49 #include "AliTOFHitMap.h"
50 #include "AliTOFSDigit.h"
51 #include "AliTOFSDigitizer.h"
52 #include "AliTOFhit.h"
53 #include "AliTOFhitT0.h"
59 ClassImp(AliTOFSDigitizer)
61 //____________________________________________________________________________
62 AliTOFSDigitizer::AliTOFSDigitizer():TTask("AliTOFSDigitizer","")
71 fSelectedSector=-1; //0; // AdC
72 fSelectedPlate =-1; //0; // AdC
75 //____________________________________________________________________________
76 AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile, Int_t evNumber1, Int_t nEvents):TTask("AliTOFSDigitizer","")
79 fEvent2=fEvent1+nEvents;
81 fSelectedSector=-1; //0; // AdC // by default we sdigitize all sectors
82 fSelectedPlate =-1; //0; // AdC // by default we sdigitize all plates in all sectors
84 fHeadersFile = HeaderFile ; // input filename (with hits)
85 TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data() ) ;
87 //File was not opened yet
88 // open file and get alirun object
90 file = TFile::Open(fHeadersFile.Data(),"update") ;
91 gAlice = (AliRun *) file->Get("gAlice") ;
94 // init parameters for sdigitization
97 // add Task to //root/Tasks folder
98 fRunLoader = AliRunLoader::Open(HeaderFile);//open session and mount on default event folder
99 if (fRunLoader == 0x0)
101 Fatal("AliTOFSDigitizer","Event is not loaded. Exiting");
104 AliLoader* gime = fRunLoader->GetLoader("TOFLoader");
107 Fatal("AliTOFSDigitizer","Can not find TOF loader in event. Exiting.");
110 gime->PostSDigitizer(this);
113 //____________________________________________________________________________
114 AliTOFSDigitizer::~AliTOFSDigitizer()
119 //____________________________________________________________________________
120 void AliTOFSDigitizer::InitParameters()
122 // set parameters for detector simulation
124 fTimeResolution =0.120;
125 fpadefficiency =0.99 ;
132 fEffCenter = fpadefficiency;
134 fEff2Boundary = 0.90;
135 fEff3Boundary = 0.08;
139 fTimeWalkCenter = 0. ;
140 fTimeWalkBoundary=0. ;
141 fTimeWalkSlope = 0. ;
143 fPulseHeightSlope=2.0 ;
144 fTimeDelaySlope =0.060;
145 // was fMinimumCharge = TMath::Exp(fPulseHeightSlope*fKparameter/2.);
146 fMinimumCharge = TMath::Exp(-fPulseHeightSlope*fHparameter);
147 fChargeSmearing=0.0 ;
148 fLogChargeSmearing=0.13;
149 fTimeSmearing =0.022;
151 fTdcBin = 50.; // 1 TDC bin = 50 ps
152 fAdcBin = 0.25; // 1 ADC bin = 0.25 pC (or 0.03 pC)
153 fAdcMean = 50.; // ADC distribution mpv value for Landau (in bins)
154 // it corresponds to a mean value of ~100 bins
155 fAdcRms = 25.; // ADC distribution rms value (in bins)
156 // it corresponds to distribution rms ~50 bins
159 //__________________________________________________________________
160 Double_t TimeWithTail(Double_t* x, Double_t* par)
162 // sigma - par[0], alpha - par[1], part - par[2]
163 // at x<part*sigma - gauss
164 // at x>part*sigma - TMath::Exp(-x/alpha)
167 if(xx<par[0]*par[2]) {
168 f = TMath::Exp(-xx*xx/(2*par[0]*par[0]));
170 f = TMath::Exp(-(xx-par[0]*par[2])/par[1]-0.5*par[2]*par[2]);
176 //____________________________________________________________________________
177 void AliTOFSDigitizer::Exec(Option_t *verboseOption, Option_t *allEvents) {
179 fRunLoader->LoadgAlice();
180 fRunLoader->LoadHeader();
181 fRunLoader->LoadKinematics();
182 gAlice = fRunLoader->GetAliRun();
184 AliLoader* gime = fRunLoader->GetLoader("TOFLoader");
185 gime->LoadHits("read");
186 gime->LoadSDigits("recreate");
187 if(strstr(verboseOption,"tim") || strstr(verboseOption,"all"))
188 gBenchmark->Start("TOFSDigitizer");
190 AliTOF *TOF = (AliTOF *) gAlice->GetDetector("TOF");
193 Error("AliTOFSDigitizer","TOF not found");
197 // is pointer to fSDigits non zero after changes?
198 cout<<"TOF fSDigits pointer:"<<TOF->SDigits()<<endl;
200 // recreate TClonesArray fSDigits - for backward compatibility
201 if (TOF->SDigits() == 0) {
202 TOF->CreateSDigitsArray();
204 TOF->RecreateSDigitsArray();
207 Int_t version=TOF->IsVersion();
209 if (fEdgeTails) ftail = new TF1("tail",TimeWithTail,-2,2,3);
211 Int_t nselectedHits=0;
212 Int_t ntotalsdigits=0;
213 Int_t ntotalupdates=0;
214 Int_t nnoisesdigits=0;
215 Int_t nsignalsdigits=0;
216 Int_t nHitsFromPrim=0;
217 Int_t nHitsFromSec=0;
218 Int_t nlargeTofDiff=0;
220 if (strstr(allEvents,"all")){
222 fEvent2= (Int_t) gAlice->TreeE()->GetEntries();
225 //Bool_t thereIsNotASelection=(fSelectedSector==0) && (fSelectedPlate==0); // AdC
226 Bool_t thereIsNotASelection=(fSelectedSector==-1) && (fSelectedPlate==-1);
228 for (Int_t ievent = fEvent1; ievent < fEvent2; ievent++) {
229 cout << "------------------- "<< GetName() << " -------------" << endl ;
230 cout << "Sdigitizing event " << ievent << endl;
232 Int_t nselectedHitsinEv=0;
233 Int_t ntotalsdigitsinEv=0;
234 Int_t ntotalupdatesinEv=0;
235 Int_t nnoisesdigitsinEv=0;
236 Int_t nsignalsdigitsinEv=0;
238 fRunLoader->GetEvent(ievent);
239 TOF->SetTreeAddress();
240 TTree *TH = gime->TreeH ();
243 if (gime->TreeS () == 0)
244 gime->MakeTree ("S");
249 sprintf (branchname, "%s", TOF->GetName ());
250 //Make branch for digits
251 TOF->MakeBranch("S");
253 //Now made SDigits from hits
258 TClonesArray *TOFhits = TOF->Hits();
261 AliTOFHitMap *hitMap = new AliTOFHitMap(TOF->SDigits());
263 // increase performances in terms of CPU time
264 //PH TH->SetBranchStatus("*",0); // switch off all branches
265 //PH TH->SetBranchStatus("TOF*",1); // switch on only TOF
267 TBranch * tofHitsBranch = TH->GetBranch("TOF");
269 Int_t ntracks = static_cast<Int_t>(TH->GetEntries());
270 for (Int_t track = 0; track < ntracks; track++)
273 //PH TH->GetEvent(track);
274 tofHitsBranch->GetEvent(track);
275 particle = gAlice->Particle(track);
276 Int_t nhits = TOFhits->GetEntriesFast();
277 // cleaning all hits of the same track in the same pad volume
278 // it is a rare event, however it happens
280 Int_t previousTrack =-1; //0; // AdC
281 Int_t previousSector=-1; //0; // AdC
282 Int_t previousPlate =-1; //0; // AdC
283 Int_t previousStrip =-1; //0; // AdC
284 Int_t previousPadX =-1; //0; // AdC
285 Int_t previousPadZ =-1; //0; // AdC
287 for (Int_t hit = 0; hit < nhits; hit++)
289 Int_t vol[5]; // location for a digit
290 Float_t digit[2]; // TOF digit variables
296 // fp: really sorry for this, it is a temporary trick to have
299 AliTOFhit *tofHit = (AliTOFhit *) TOFhits->UncheckedAt(hit);
300 tracknum = tofHit->GetTrack();
301 vol[0] = tofHit->GetSector();
302 vol[1] = tofHit->GetPlate();
303 vol[2] = tofHit->GetStrip();
304 vol[3] = tofHit->GetPadx();
305 vol[4] = tofHit->GetPadz();
306 Xpad = tofHit->GetDx();
307 Zpad = tofHit->GetDz();
308 geantTime = tofHit->GetTof(); // unit [s]
310 AliTOFhitT0 *tofHit = (AliTOFhitT0 *) TOFhits->UncheckedAt(hit);
311 tracknum = tofHit->GetTrack();
312 vol[0] = tofHit->GetSector();
313 vol[1] = tofHit->GetPlate();
314 vol[2] = tofHit->GetStrip();
315 vol[3] = tofHit->GetPadx();
316 vol[4] = tofHit->GetPadz();
317 Xpad = tofHit->GetDx();
318 Zpad = tofHit->GetDz();
319 geantTime = tofHit->GetTof(); // unit [s]
322 geantTime *= 1.e+09; // conversion from [s] to [ns]
324 // selection case for sdigitizing only hits in a given plate of a given sector
325 if(thereIsNotASelection || (vol[0]==fSelectedSector && vol[1]==fSelectedPlate)){
327 Bool_t dummy=((tracknum==previousTrack) && (vol[0]==previousSector) && (vol[1]==previousPlate) && (vol[2]==previousStrip));
329 Bool_t isCloneOfThePrevious=dummy && ((vol[3]==previousPadX) && (vol[4]==previousPadZ));
331 Bool_t isNeighOfThePrevious=dummy && ((((vol[3]==previousPadX-1) || (vol[3]==previousPadX+1)) && (vol[4]==previousPadZ)) || ((vol[3]==previousPadX) && ((vol[4]==previousPadZ+1) || (vol[4]==previousPadZ-1))));
333 if(!isCloneOfThePrevious && !isNeighOfThePrevious){
334 // update "previous" values
335 // in fact, we are yet in the future, so the present is past
336 previousTrack=tracknum;
337 previousSector=vol[0];
338 previousPlate=vol[1];
339 previousStrip=vol[2];
345 if (particle->GetFirstMother() < 0){
347 } // counts hits due to primary particles
349 //Float_t xStrip=AliTOFConstants::fgkXPad*(vol[3]-0.5-0.5*AliTOFConstants::fgkNpadX)+Xpad;
350 //Float_t zStrip=AliTOFConstants::fgkZPad*(vol[4]-0.5-0.5*AliTOFConstants::fgkNpadZ)+Zpad;
351 Float_t xStrip=AliTOFConstants::fgkXPad*(vol[3]+0.5-0.5*AliTOFConstants::fgkNpadX)+Xpad; // AdC
352 Float_t zStrip=AliTOFConstants::fgkZPad*(vol[4]+0.5-0.5*AliTOFConstants::fgkNpadZ)+Zpad; // AdC
354 //cout << "geantTime " << geantTime << " [ns]" << endl;
355 Int_t nActivatedPads = 0, nFiredPads = 0;
356 Bool_t isFired[4] = {kFALSE, kFALSE, kFALSE, kFALSE};
357 Float_t tofAfterSimul[4] = {0., 0., 0., 0.};
358 Float_t qInduced[4] = {0.,0.,0.,0.};
359 Int_t nPlace[4] = {0, 0, 0, 0};
360 Float_t averageTime = 0.;
361 SimulateDetectorResponse(zStrip,xStrip,geantTime,nActivatedPads,nFiredPads,isFired,nPlace,qInduced,tofAfterSimul,averageTime);
363 for(Int_t indexOfPad=0; indexOfPad<nActivatedPads; indexOfPad++) {
364 if(isFired[indexOfPad]){ // the pad has fired
365 Float_t timediff=geantTime-tofAfterSimul[indexOfPad];
367 if(timediff>=0.2) nlargeTofDiff++;
369 digit[0] = (Int_t) ((tofAfterSimul[indexOfPad]*1.e+03)/fTdcBin); // TDC bin number (each bin -> 50. ps)
371 Float_t landauFactor = gRandom->Landau(fAdcMean, fAdcRms);
372 digit[1] = (Int_t) (qInduced[indexOfPad] * landauFactor); // ADC bins (each bin -> 0.25 (or 0.03) pC)
374 // recalculate the volume only for neighbouring pads
376 (nPlace[indexOfPad]<=AliTOFConstants::fgkNpadX) ? vol[4] = 0/*1*/ : vol[4] = 1/*2*/; // AdC
377 (nPlace[indexOfPad]<=AliTOFConstants::fgkNpadX) ? vol[3] = nPlace[indexOfPad] - 1 : vol[3] = nPlace[indexOfPad] - AliTOFConstants::fgkNpadX - 1; // AdC
380 // check if two sdigit are on the same pad; in that case we sum
381 // the two or more sdigits
382 if (hitMap->TestHit(vol) != kEmpty) {
383 AliTOFSDigit *sdig = static_cast<AliTOFSDigit*>(hitMap->GetHit(vol));
384 Int_t tdctime = (Int_t) digit[0];
385 Int_t adccharge = (Int_t) digit[1];
386 sdig->Update(fTdcBin,tdctime,adccharge,tracknum);
391 TOF->AddSDigit(tracknum, vol, digit);
398 nsignalsdigitsinEv++;
403 } // if (hitMap->TestHit(vol) != kEmpty)
404 } // if(isFired[indexOfPad])
405 } // end loop on nActivatedPads
406 } // if(nFiredPads) i.e. if some pads has fired
407 } // close if(!isCloneOfThePrevious)
408 } // close the selection on sector and plate
409 } // end loop on hits for the current track
410 } // end loop on ntracks
414 gime->TreeS()->Reset();
415 gime->TreeS()->Fill();
416 //gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
417 gime->WriteSDigits("OVERWRITE");
419 if(strstr(verboseOption,"all")){
420 cout << "----------------------------------------" << endl;
421 cout << " <AliTOFSDigitizer> " << endl;
422 cout << "After sdigitizing " << nselectedHitsinEv << " hits" << " in event " << ievent << endl;
423 //" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
424 cout << ntotalsdigitsinEv << " digits have been created " << endl;
425 cout << "(" << nsignalsdigitsinEv << " due to signals and " << nnoisesdigitsinEv << " due to border effect)" << endl;
426 cout << ntotalupdatesinEv << " total updates of the hit map have been performed in current event" << endl;
427 cout << "----------------------------------------" << endl;
430 } //event loop on events
438 nHitsFromSec=nselectedHits-nHitsFromPrim;
439 if(strstr(verboseOption,"all")){
440 cout << "----------------------------------------" << endl;
441 cout << "----------------------------------------" << endl;
442 cout << "-----------SDigitization Summary--------" << endl;
443 cout << " <AliTOFSDigitizer> " << endl;
444 cout << "After sdigitizing " << nselectedHits << " hits" << endl;
445 cout << "in " << (fEvent2-fEvent1) << " events" << endl;
446 //" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
447 cout << ntotalsdigits << " sdigits have been created " << endl;
448 cout << "(" << nsignalsdigits << " due to signals and " << nnoisesdigits << " due to border effect)" << endl;
449 cout << ntotalupdates << " total updates of the hit map have been performed" << endl;
450 cout << "in " << nlargeTofDiff << " cases the time of flight difference is greater than 200 ps" << endl;
454 if(strstr(verboseOption,"tim") || strstr(verboseOption,"all")){
455 gBenchmark->Stop("TOFSDigitizer");
456 cout << "AliTOFSDigitizer:" << endl ;
457 cout << " took " << gBenchmark->GetCpuTime("TOFSDigitizer") << " seconds in order to make sdigits "
458 << gBenchmark->GetCpuTime("TOFSDigitizer")/(fEvent2-fEvent1) << " seconds per event " << endl ;
465 //__________________________________________________________________
466 void AliTOFSDigitizer::Print(Option_t* /*opt*/)const
468 cout << "------------------- "<< GetName() << " -------------" << endl ;
472 //__________________________________________________________________
473 void AliTOFSDigitizer::SelectSectorAndPlate(Int_t sector, Int_t plate)
475 //Bool_t isaWrongSelection=(sector < 1) || (sector > AliTOFConstants::fgkNSectors) || (plate < 1) || (plate > AliTOFConstants::fgkNPlates);
476 Bool_t isaWrongSelection=(sector < 0) || (sector >= AliTOFConstants::fgkNSectors) || (plate < 0) || (plate >= AliTOFConstants::fgkNPlates); // AdC
477 if(isaWrongSelection){
478 cout << "You have selected an invalid value for sector or plate " << endl;
479 //cout << "The correct range for sector is [1,"<< AliTOFConstants::fgkNSectors <<"]" << endl;
480 //cout << "The correct range for plate is [1,"<< AliTOFConstants::fgkNPlates <<"]" << endl;
481 cout << "The correct range for sector is [0,"<< AliTOFConstants::fgkNSectors-1 <<"]\n"; // AdC
482 cout << "The correct range for plate is [0,"<< AliTOFConstants::fgkNPlates-1 <<"]\n"; // AdC
483 cout << "By default we continue sdigitizing all hits in all plates of all sectors" << endl;
485 fSelectedSector=sector;
486 fSelectedPlate =plate;
487 cout << "SDigitizing only hits in plate " << fSelectedPlate << " of the sector " << fSelectedSector << endl;
491 //__________________________________________________________________
492 void AliTOFSDigitizer::SimulateDetectorResponse(Float_t z0, Float_t x0, Float_t geantTime, Int_t& nActivatedPads, Int_t& nFiredPads, Bool_t* isFired, Int_t* nPlace, Float_t* qInduced, Float_t* tofTime, Float_t& averageTime)
495 // Input: z0, x0 - hit position in the strip system (0,0 - center of the strip), cm
496 // geantTime - time generated by Geant, ns
497 // Output: nActivatedPads - the number of pads activated by the hit (1 || 2 || 4)
498 // nFiredPads - the number of pads fired (really activated) by the hit (nFiredPads <= nActivatedPads)
499 // qInduced[iPad]- charge induced on pad, arb. units
500 // this array is initialized at zero by the caller
501 // tofAfterSimul[iPad] - time calculated with edge effect algorithm, ns
502 // this array is initialized at zero by the caller
503 // averageTime - time given by pad hited by the Geant track taking into account the times (weighted) given by the pads fired for edge effect also.
504 // The weight is given by the qInduced[iPad]/qCenterPad
505 // this variable is initialized at zero by the caller
506 // nPlace[iPad] - the number of the pad place, iPad = 0, 1, 2, 3
507 // this variable is initialized at zero by the caller
509 // Description of used variables:
510 // eff[iPad] - efficiency of the pad
511 // res[iPad] - resolution of the pad, ns
512 // timeWalk[iPad] - time walk of the pad, ns
513 // timeDelay[iPad] - time delay for neighbouring pad to hited pad, ns
514 // PadId[iPad] - Pad Identifier
515 // E | F --> PadId[iPad] = 5 | 6
516 // A | B --> PadId[iPad] = 1 | 2
517 // C | D --> PadId[iPad] = 3 | 4
518 // nTail[iPad] - the tail number, = 1 for tailA, = 2 for tailB
519 // qCenterPad - charge extimated for each pad, arb. units
520 // weightsSum - sum of weights extimated for each pad fired, arb. units
522 const Float_t kSigmaForTail[2] = {AliTOFConstants::fgkSigmaForTail1,AliTOFConstants::fgkSigmaForTail2}; //for tail
523 Int_t iz = 0, ix = 0;
524 Float_t dX = 0., dZ = 0., x = 0., z = 0.;
525 Float_t h = fHparameter, h2 = fH2parameter, k = fKparameter, k2 = fK2parameter;
526 Float_t effX = 0., effZ = 0., resX = 0., resZ = 0., timeWalkX = 0., timeWalkZ = 0.;
527 Float_t logOfqInd = 0.;
528 Float_t weightsSum = 0.;
529 Int_t nTail[4] = {0,0,0,0};
530 Int_t padId[4] = {0,0,0,0};
531 Float_t eff[4] = {0.,0.,0.,0.};
532 Float_t res[4] = {0.,0.,0.,0.};
533 // Float_t qCenterPad = fMinimumCharge * fMinimumCharge;
534 Float_t qCenterPad = 1.;
535 Float_t timeWalk[4] = {0.,0.,0.,0.};
536 Float_t timeDelay[4] = {0.,0.,0.,0.};
541 (z0 <= 0) ? iz = 0 : iz = 1;
542 dZ = z0 + (0.5 * AliTOFConstants::fgkNpadZ - iz - 0.5) * AliTOFConstants::fgkZPad; // hit position in the pad frame, (0,0) - center of the pad
543 z = 0.5 * AliTOFConstants::fgkZPad - TMath::Abs(dZ); // variable for eff., res. and timeWalk. functions
544 iz++; // z row: 1, ..., AliTOFConstants::fgkNpadZ = 2
545 ix = (Int_t)((x0 + 0.5 * AliTOFConstants::fgkNpadX * AliTOFConstants::fgkXPad) / AliTOFConstants::fgkXPad);
546 dX = x0 + (0.5 * AliTOFConstants::fgkNpadX - ix - 0.5) * AliTOFConstants::fgkXPad; // hit position in the pad frame, (0,0) - center of the pad
547 x = 0.5 * AliTOFConstants::fgkXPad - TMath::Abs(dX); // variable for eff., res. and timeWalk. functions;
548 ix++; // x row: 1, ..., AliTOFConstants::fgkNpadX = 48
552 nPlace[nActivatedPads-1] = (iz - 1) * AliTOFConstants::fgkNpadX + ix;
553 qInduced[nActivatedPads-1] = qCenterPad;
554 padId[nActivatedPads-1] = 1;
556 if (fEdgeEffect == 0) {
557 eff[nActivatedPads-1] = fEffCenter;
558 if (gRandom->Rndm() < eff[nActivatedPads-1]) {
560 res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + fResCenter * fResCenter); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns;
561 isFired[nActivatedPads-1] = kTRUE;
562 tofTime[nActivatedPads-1] = gRandom->Gaus(geantTime + fTimeWalkCenter, res[0]);
563 averageTime = tofTime[nActivatedPads-1];
569 effZ = fEffBoundary + (fEff2Boundary - fEffBoundary) * z / h2;
571 effZ = fEff2Boundary + (fEffCenter - fEff2Boundary) * (z - h2) / (h - h2);
573 resZ = fResBoundary + (fResCenter - fResBoundary) * z / h;
574 timeWalkZ = fTimeWalkBoundary + (fTimeWalkCenter - fTimeWalkBoundary) * z / h;
575 nTail[nActivatedPads-1] = 1;
579 timeWalkZ = fTimeWalkCenter;
584 effX = fEffBoundary + (fEff2Boundary - fEffBoundary) * x / h2;
586 effX = fEff2Boundary + (fEffCenter - fEff2Boundary) * (x - h2) / (h - h2);
588 resX = fResBoundary + (fResCenter - fResBoundary) * x / h;
589 timeWalkX = fTimeWalkBoundary + (fTimeWalkCenter - fTimeWalkBoundary) * x / h;
590 nTail[nActivatedPads-1] = 1;
594 timeWalkX = fTimeWalkCenter;
597 (effZ<effX) ? eff[nActivatedPads-1] = effZ : eff[nActivatedPads-1] = effX;
598 (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns
599 (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
604 effZ = fEffBoundary - (fEffBoundary - fEff3Boundary) * (z / k2);
606 effZ = fEff3Boundary * (k - z) / (k - k2);
608 resZ = fResBoundary + fResSlope * z / k;
609 timeWalkZ = fTimeWalkBoundary + fTimeWalkSlope * z / k;
612 if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
614 nPlace[nActivatedPads-1] = nPlace[0] + (3 - 2 * iz) * AliTOFConstants::fgkNpadX;
615 eff[nActivatedPads-1] = effZ;
616 res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns
617 timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ; // ns
618 nTail[nActivatedPads-1] = 2;
619 if (fTimeDelayFlag) {
620 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
621 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
622 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
623 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
624 timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
626 timeDelay[nActivatedPads-1] = 0.;
628 padId[nActivatedPads-1] = 2;
633 ////// Pad C, D, E, F:
635 effX = fEffBoundary - (fEffBoundary - fEff3Boundary) * (x / k2);
637 effX = fEff3Boundary * (k - x) / (k - k2);
639 resX = fResBoundary + fResSlope*x/k;
640 timeWalkX = fTimeWalkBoundary + fTimeWalkSlope*x/k;
644 if(ix > 1 && dX < 0) {
646 nPlace[nActivatedPads-1] = nPlace[0] - 1;
647 eff[nActivatedPads-1] = effX;
648 res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns
649 timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
650 nTail[nActivatedPads-1] = 2;
651 if (fTimeDelayFlag) {
652 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
653 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
654 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
655 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
656 timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
658 timeDelay[nActivatedPads-1] = 0.;
660 padId[nActivatedPads-1] = 3;
664 if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
666 nPlace[nActivatedPads-1] = nPlace[0] + (3 - 2 * iz) * AliTOFConstants::fgkNpadX - 1;
667 eff[nActivatedPads-1] = effX * effZ;
668 (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns
669 (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
671 nTail[nActivatedPads-1] = 2;
672 if (fTimeDelayFlag) {
673 if (TMath::Abs(x) < TMath::Abs(z)) {
674 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
675 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
676 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
677 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
679 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
680 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
681 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
682 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
684 timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
686 timeDelay[nActivatedPads-1] = 0.;
688 padId[nActivatedPads-1] = 4;
694 if(ix < AliTOFConstants::fgkNpadX && dX > 0) {
696 nPlace[nActivatedPads-1] = nPlace[0] + 1;
697 eff[nActivatedPads-1] = effX;
698 res[nActivatedPads-1] = 0.001 * (TMath::Sqrt(10400 + resX * resX)); // ns
699 timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
700 nTail[nActivatedPads-1] = 2;
701 if (fTimeDelayFlag) {
702 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
703 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
704 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
705 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
706 timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
708 timeDelay[nActivatedPads-1] = 0.;
710 padId[nActivatedPads-1] = 5;
715 if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
717 nPlace[nActivatedPads - 1] = nPlace[0] + (3 - 2 * iz) * AliTOFConstants::fgkNpadX + 1;
718 eff[nActivatedPads - 1] = effX * effZ;
719 (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 ns
720 (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001*timeWalkX; // ns
721 nTail[nActivatedPads-1] = 2;
722 if (fTimeDelayFlag) {
723 if (TMath::Abs(x) < TMath::Abs(z)) {
724 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
725 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
726 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
727 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
729 // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
730 // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
731 qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
732 logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
734 timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
736 timeDelay[nActivatedPads-1] = 0.;
738 padId[nActivatedPads-1] = 6;
745 for (Int_t iPad = 0; iPad < nActivatedPads; iPad++) {
746 if (res[iPad] < fTimeResolution) res[iPad] = fTimeResolution;
747 if(gRandom->Rndm() < eff[iPad]) {
748 isFired[iPad] = kTRUE;
751 if(nTail[iPad] == 0) {
752 tofTime[iPad] = gRandom->Gaus(geantTime + timeWalk[iPad] + timeDelay[iPad], res[iPad]);
754 ftail->SetParameters(res[iPad], 2. * res[iPad], kSigmaForTail[nTail[iPad]-1]);
755 Double_t timeAB = ftail->GetRandom();
756 tofTime[iPad] = geantTime + timeWalk[iPad] + timeDelay[iPad] + timeAB;
759 tofTime[iPad] = gRandom->Gaus(geantTime + timeWalk[iPad] + timeDelay[iPad], res[iPad]);
761 if (fAverageTimeFlag) {
762 averageTime += tofTime[iPad] * qInduced[iPad];
763 weightsSum += qInduced[iPad];
765 averageTime += tofTime[iPad];
770 if (weightsSum!=0) averageTime /= weightsSum;
771 } // end else (fEdgeEffect != 0)
774 //__________________________________________________________________
775 void AliTOFSDigitizer::PrintParameters()const
778 // Print parameters used for sdigitization
780 cout << " ------------------- "<< GetName() << " -------------" << endl ;
781 cout << " Parameters used for TOF SDigitization " << endl ;
782 // Printing the parameters
784 cout << " Number of events: " << (fEvent2-fEvent1) << endl;
785 cout << " from event " << fEvent1 << " to event " << (fEvent2-1) << endl;
786 cout << " Time Resolution (ns) "<< fTimeResolution <<" Pad Efficiency: "<< fpadefficiency << endl;
787 cout << " Edge Effect option: "<< fEdgeEffect<< endl;
789 cout << " Boundary Effect Simulation Parameters " << endl;
790 cout << " Hparameter: "<< fHparameter<<" H2parameter:"<< fH2parameter <<" Kparameter:"<< fKparameter<<" K2parameter: "<< fK2parameter << endl;
791 cout << " Efficiency in the central region of the pad: "<< fEffCenter << endl;
792 cout << " Efficiency at the boundary region of the pad: "<< fEffBoundary << endl;
793 cout << " Efficiency value at H2parameter "<< fEff2Boundary << endl;
794 cout << " Efficiency value at K2parameter "<< fEff3Boundary << endl;
795 cout << " Resolution (ps) in the central region of the pad: "<< fResCenter << endl;
796 cout << " Resolution (ps) at the boundary of the pad : "<< fResBoundary << endl;
797 cout << " Slope (ps/K) for neighbouring pad : "<< fResSlope <<endl;
798 cout << " Time walk (ps) in the central region of the pad : "<< fTimeWalkCenter << endl;
799 cout << " Time walk (ps) at the boundary of the pad : "<< fTimeWalkBoundary<< endl;
800 cout << " Slope (ps/K) for neighbouring pad : "<< fTimeWalkSlope<<endl;
801 cout << " Pulse Heigth Simulation Parameters " << endl;
802 cout << " Flag for delay due to the PulseHeightEffect: "<< fTimeDelayFlag <<endl;
803 cout << " Pulse Height Slope : "<< fPulseHeightSlope<<endl;
804 cout << " Time Delay Slope : "<< fTimeDelaySlope<<endl;
805 cout << " Minimum charge amount which could be induced : "<< fMinimumCharge<<endl;
806 cout << " Smearing in charge in (q1/q2) vs x plot : "<< fChargeSmearing<<endl;
807 cout << " Smearing in log of charge ratio : "<< fLogChargeSmearing<<endl;
808 cout << " Smearing in time in time vs log(q1/q2) plot : "<< fTimeSmearing<<endl;
809 cout << " Flag for average time : "<< fAverageTimeFlag<<endl;
810 cout << " Edge tails option : "<< fEdgeTails << endl;