2 /**************************************************************************
3 * Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
8 * Permission to use, copy, modify and distribute this software and its *
9 * documentation strictly for non-commercial purposes is hereby granted *
10 * without fee, provided that the above copyright notice appears in all *
11 * copies and that both the copyright notice and this permission notice *
12 * appear in the supporting documentation. The authors make no claims *
13 * about the suitability of this software for any purpose. It is *
14 * provided "as is" without express or implied warranty. *
15 **************************************************************************/
20 #include <TDirectory.h>
30 #include "AliT0Digitizer.h"
33 #include "AliT0digit.h"
34 #include "AliRunDigitizer.h"
35 #include <AliDetector.h>
37 #include <AliLoader.h>
38 #include <AliRunLoader.h>
40 #include <Riostream.h>
41 #include <Riostream.h>
42 #include "AliT0Parameters.h"
43 #include "AliCDBLocal.h"
44 #include "AliCDBStorage.h"
45 #include "AliCDBManager.h"
46 #include "AliCDBEntry.h"
48 ClassImp(AliT0Digitizer)
50 //___________________________________________
51 AliT0Digitizer::AliT0Digitizer() :AliDigitizer(),
55 ftimeCFD(new TArrayI(24)),
56 ftimeLED (new TArrayI(24)),
57 fADC(new TArrayI(24)),
58 fADC0 (new TArrayI(24)),
65 // Default ctor - don't use it
69 //___________________________________________
70 AliT0Digitizer::AliT0Digitizer(AliRunDigitizer* manager)
71 :AliDigitizer(manager),
75 ftimeCFD(new TArrayI(24)),
76 ftimeLED (new TArrayI(24)),
77 fADC(new TArrayI(24)),
78 fADC0 (new TArrayI(24)),
83 // ctor which should be used
85 AliDebug(1,"processed");
86 fParam = AliT0Parameters::Instance();
89 for (Int_t i=0; i<24; i++){
90 TGraph* gr = fParam ->GetAmpLEDRec(i);
91 Int_t np = gr->GetN();
92 Double_t *x = gr->GetX();
93 Double_t *y = gr->GetY();
95 Double_t *x1 = new Double_t[np];
96 Double_t *y1 = new Double_t[np];
97 for (Int_t ii=0; ii<np; ii++) {
98 y1[ii]=y[np-ii-1]; x1[ii]=x[np-ii-1];
101 TGraph *grInverse = new TGraph(np,y1,x1);
104 fAmpLED.AddAtAndExpand(grInverse,i);
107 //------------------------------------------------------------------------
108 AliT0Digitizer::~AliT0Digitizer()
121 //------------------------------------------------------------------------
122 Bool_t AliT0Digitizer::Init()
129 //---------------------------------------------------------------------
130 void AliT0Digitizer::Exec(Option_t* /*option*/)
134 Produde digits from hits
135 digits is TObject and includes
136 We are writing array if C & A TDC
137 C & A ADC (will need for slow simulation)
138 TOF first particle C & A
139 mean time and time difference (vertex position)
144 AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
145 AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");
147 AliDebug(1,"start...");
150 // From hits to digits
154 Int_t volume, pmt, trCFD, trLED;
156 Int_t bestATDC, bestCTDC, qtCh;
157 Float_t time[24], besttime[24], timeGaus[24] ;
158 //Q->T-> coefficients !!!! should be asked!!!
159 Float_t timeDelayCFD[24];
160 Int_t threshold =50; //photoelectrons
161 Float_t zdetA, zdetC;
162 Int_t sumMultCoeff = 100;
168 Int_t ph2Mip = fParam->GetPh2Mip();
169 Float_t channelWidth = fParam->GetChannelWidth() ;
170 Float_t delayVertex = fParam->GetTimeDelayTVD();
172 zdetC = TMath::Abs(fParam->GetZPosition("T0/C/PMT1"));
173 zdetA = TMath::Abs(fParam->GetZPosition("T0/A/PMT15"));
178 Int_t nFiles=fManager->GetNinputs();
179 for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
180 if (inputFile < nFiles-1) {
181 AliWarning(Form("ignoring input stream %d", inputFile));
186 Float_t besttimeC=99999.;
187 Float_t besttimeA=99999.;
190 Int_t timeDiff=999, meanTime=0;
191 Int_t sumMult =0; fSumMult=0;
192 bestATDC = 99999; bestCTDC = 99999;
199 for (Int_t i0=0; i0<24; i0++)
201 time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0;
203 AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
204 AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
205 if (!inRL->GetAliRun()) inRL->LoadgAlice();
206 AliT0 *fT0 = (AliT0*)inRL ->GetAliRun()->GetDetector("T0");
209 pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
210 TClonesArray *fHits = fT0->Hits ();
211 TTree *th = pInStartLoader->TreeH();
212 brHits = th->GetBranch("T0");
214 fT0->SetHitsAddressBranch(brHits);
216 AliError("Branch T0 hit not found");
219 Int_t ntracks = (Int_t) th->GetEntries();
221 if (ntracks<=0) return;
222 // Start loop on tracks in the hits containers
223 for (Int_t track=0; track<ntracks;track++) {
224 brHits->GetEntry(track);
225 nhits = fHits->GetEntriesFast();
226 for (hit=0;hit<nhits;hit++)
228 startHit = (AliT0hit*) fHits->UncheckedAt(hit);
230 AliError("The unchecked hit doesn't exist");
235 Double_t e=startHit->Etot();
236 volume = startHit->Volume();
238 // if(e>0 && RegisterPhotoE(numpmt,e)) {
241 besttime[numpmt] = startHit->Time();
242 if(besttime[numpmt]<time[numpmt])
244 time[numpmt]=besttime[numpmt];
246 } //photoelectron accept
250 //spread time A&C by 25ps && besttime
251 Float_t c = 0.0299792; // cm/ps
253 Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
254 for (Int_t ipmt=0; ipmt<12; ipmt++){
255 if(countE[ipmt] > threshold) {
256 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
257 if(timeGaus[ipmt]<besttimeC){
258 besttimeC=timeGaus[ipmt]; //timeC
262 for ( Int_t ipmt=12; ipmt<24; ipmt++){
263 if(countE[ipmt] > threshold) {
264 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
265 if(timeGaus[ipmt]<besttimeA) {
266 besttimeA=timeGaus[ipmt]; //timeA
271 timeDelayCFD[0] = fParam->GetTimeDelayCFD(0);
272 Int_t meanTimeDelay=200;
274 for (Int_t i=0; i<24; i++)
276 Float_t al = countE[i];
277 if (al>threshold && timeGaus[i]<50000 ) {
280 // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
281 // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
283 qt= 50.*al/ph2Mip; // 50mv/Mip amp in mV
285 timeDelayCFD[i] = fParam->GetTimeDelayCFD(i);
286 trCFD = Int_t (timeGaus[i]/channelWidth + (timeDelayCFD[i]-timeDelayCFD[0]));
287 TGraph* gr = ((TGraph*)fAmpLED.At(i));
290 trLED = Int_t(( timeGaus[i] + 1000*sl )/channelWidth);
291 qtCh=Int_t (1000.*TMath::Log(qt) / channelWidth);
294 ftimeLED->AddAt(trLED,i);
295 // sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
296 sumMult += Int_t (qt/sumMultCoeff) ;
299 TGraph *fu=(TGraph*) fParam ->GetWalk(i) ;
300 Float_t slew=fu->Eval(Float_t(qtCh));
301 hr=fu->GetHistogram();
302 Float_t maxValue=hr->GetMaximum(50);
303 trCFD=trCFD-Int_t((maxValue-slew)/channelWidth);
304 ftimeCFD->AddAt(Int_t (trCFD),i);
305 AliDebug(10,Form(" pmt %i : time in ns %f time in channels %i ",
306 i, timeGaus[i],trCFD ));
307 AliDebug(10,Form(" qt in mV %f qt in ns %f qt in channels %i ",qt,
308 TMath::Log(qt), qtCh));
313 //folding with alignmentz position distribution
314 if( besttimeC > 10000. && besttimeC <15000)
315 bestCTDC=Int_t ((besttimeC+timeDelayCFD[pmtBestC])
318 if( besttimeA > 10000. && besttimeA <15000)
319 bestATDC=Int_t ((besttimeA+timeDelayCFD[pmtBestA])
322 if (bestATDC < 99999 && bestCTDC < 99999)
324 timeDiff=Int_t (((besttimeC-besttimeA)+1000*delayVertex)
326 meanTime=Int_t (((besttimeC+besttimeA)/2. + meanTimeDelay)/channelWidth);
328 AliDebug(10,Form(" time A& C %i %i time diff && mean time in channels %i %i",bestATDC,bestCTDC, timeDiff, meanTime));
330 if (sumMult > threshold){
331 fSumMult = Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
333 AliDebug(10,Form("summult mv %i mult in chammens %i in ps %i ",
334 sumMult, fSumMult, fSumMult*channelWidth));
337 fT0->AddDigit(bestATDC,bestCTDC,meanTime,timeDiff,fSumMult, refpoint,
338 ftimeCFD,fADC0,ftimeLED,fADC);
341 AliDebug(10,Form(" Digits wrote refpoint %i bestATDC %i bestCTDC %i meanTime %i timeDiff %i fSumMult %i ",refpoint ,bestATDC,bestCTDC,meanTime,timeDiff,fSumMult ));
342 pOutStartLoader->UnloadHits();
343 } //input streams loop
346 pOutStartLoader->LoadDigits("UPDATE");
347 TTree *treeD = pOutStartLoader->TreeD();
349 pOutStartLoader->MakeTree("D");
350 treeD = pOutStartLoader->TreeD();
353 fT0 = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
354 // Make a branch in the tree
355 fT0->MakeBranch("D");
358 pOutStartLoader->WriteDigits("OVERWRITE");
361 pOutStartLoader->UnloadDigits();