23-jan-2007 NvE Bug fixed by Garmt in IceMakeHits.cxx.
[u/mrichter/AliRoot.git] / T0 / AliT0Digitizer.cxx
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2/**************************************************************************
3 * Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. *
4 * *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
7 * *
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 **************************************************************************/
16
17
18#include <TTree.h>
19#include <TFile.h>
20#include <TDirectory.h>
21#include <TRandom.h>
22#include <TArrayI.h>
23#include <TError.h>
24#include <TH1F.h>
25#include <TGraph.h>
26
27#include "AliLog.h"
28#include "AliT0Digitizer.h"
29#include "AliT0.h"
30#include "AliT0hit.h"
31#include "AliT0digit.h"
32#include "AliRunDigitizer.h"
33#include <AliDetector.h>
34#include "AliRun.h"
35#include <AliLoader.h>
36#include <AliRunLoader.h>
37#include <stdlib.h>
38#include <Riostream.h>
39#include <Riostream.h>
40#include "AliT0Parameters.h"
41#include "AliCDBLocal.h"
42#include "AliCDBStorage.h"
43#include "AliCDBManager.h"
44#include "AliCDBEntry.h"
45
46ClassImp(AliT0Digitizer)
47
48//___________________________________________
49 AliT0Digitizer::AliT0Digitizer() :AliDigitizer()
50{
51// Default ctor - don't use it
52 ;
53}
54
55//___________________________________________
56AliT0Digitizer::AliT0Digitizer(AliRunDigitizer* manager)
57 :AliDigitizer(manager),
58 fT0(0),
59 fHits(0),
60 fdigits(0),
61 ftimeCFD(0),
62 ftimeLED(0),
63 fADC(0),
64 fADC0(0)
65{
66// ctor which should be used
67
68 AliDebug(1,"processed");
69
70 fT0 = 0;
71 fHits = 0;
72 fdigits = 0;
73
74 ftimeCFD = new TArrayI(24);
75 fADC = new TArrayI(24);
76 ftimeLED = new TArrayI(24);
77 fADC0 = new TArrayI(24);
78
79
80}
81
82//------------------------------------------------------------------------
83AliT0Digitizer::~AliT0Digitizer()
84{
85// Destructor
86
87 AliDebug(1,"T0");
88
89 delete ftimeCFD;
90 delete fADC;
91 delete ftimeLED;
92 delete fADC0;
93}
94
95 //------------------------------------------------------------------------
96Bool_t AliT0Digitizer::Init()
97{
98// Initialization
99 AliDebug(1," Init");
100 return kTRUE;
101}
102
103
104//---------------------------------------------------------------------
105
106void AliT0Digitizer::Exec(Option_t* /*option*/)
107{
108
109 /*
110 Produde digits from hits
111 digits is TObject and includes
112 We are writing array if left & right TDC
113 left & right ADC (will need for slow simulation)
114 TOF first particle left & right
115 mean time and time difference (vertex position)
116
117 */
118
119 //output loader
120 AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
121 AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");
122
123 AliDebug(1,"start...");
124 //input loader
125 //
126 // From hits to digits
127 //
128 Int_t hit, nhits;
129 Int_t countE[24];
130 Int_t volume, pmt, trCFD, trLED;
131 Float_t sl, qt;
132 Int_t bestRightTDC, bestLeftTDC, qtCh;
133 Float_t time[24], besttime[24], timeGaus[24] ;
134 //Q->T-> coefficients !!!! should be asked!!!
135 Float_t gain[24],timeDelayCFD[24], timeDelayLED[24];
136 Int_t threshold =50; //photoelectrons
137 Float_t zdetA, zdetC;
138 Int_t sumMultCoeff = 100;
139 TObjArray slewingLED;
140 TObjArray slewingRec;
141 AliT0Parameters* param = AliT0Parameters::Instance();
142 param->Init();
143
144 Int_t ph2Mip = param->GetPh2Mip();
145 Int_t channelWidth = param->GetChannelWidth() ;
146 Float_t delayVertex = param->GetTimeDelayTVD();
147 for (Int_t i=0; i<24; i++){
148 timeDelayCFD[i] = param->GetTimeDelayCFD(i);
149 timeDelayLED[i] = param->GetTimeDelayLED(i);
150 gain[i] = param->GetGain(i);
151 TGraph* gr = param ->GetSlew(i);
152 slewingLED.AddAtAndExpand(gr,i);
153
154 TGraph* gr1 = param ->GetSlewRec(i);
155 slewingRec.AddAtAndExpand(gr1,i);
156
157 TGraph* grEff = param ->GetPMTeff(i);
158 fEffPMT.AddAtAndExpand(grEff,i);
159 }
160 zdetC = param->GetZposition(0);
161 zdetA = param->GetZposition(1);
162
163 AliT0hit *startHit;
164 TBranch *brHits=0;
165
166 Int_t nFiles=fManager->GetNinputs();
167 for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
168 if (inputFile < nFiles-1) {
169 AliWarning(Form("ignoring input stream %d", inputFile));
170 continue;
171
172 }
173
174 Float_t besttimeright=99999.;
175 Float_t besttimeleft=99999.;
176 Int_t pmtBestRight=9999;
177 Int_t pmtBestLeft=9999;
178 Int_t timeDiff=999, meanTime=0;
179 Int_t sumMult =0; fSumMult=0;
180 bestRightTDC = 99999; bestLeftTDC = 99999;
181
182 ftimeCFD -> Reset();
183 fADC -> Reset();
184 fADC0 -> Reset();
185 ftimeLED ->Reset();
186 for (Int_t i0=0; i0<24; i0++)
187 {
188 time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0;
189 }
190 AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
191 AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
192 if (!inRL->GetAliRun()) inRL->LoadgAlice();
193 AliT0 *fT0 = (AliT0*)inRL ->GetAliRun()->GetDetector("T0");
194
195 //read Hits
196 pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
197 TClonesArray *fHits = fT0->Hits ();
198 TTree *th = pInStartLoader->TreeH();
199 brHits = th->GetBranch("T0");
200 if (brHits) {
201 fT0->SetHitsAddressBranch(brHits);
202 }else{
203 AliError("Branch T0 hit not found");
204 exit(111);
205 }
206 Int_t ntracks = (Int_t) th->GetEntries();
207
208 if (ntracks<=0) return;
209 // Start loop on tracks in the hits containers
210 for (Int_t track=0; track<ntracks;track++) {
211 brHits->GetEntry(track);
212 nhits = fHits->GetEntriesFast();
213 for (hit=0;hit<nhits;hit++)
214 {
215 startHit = (AliT0hit*) fHits->UncheckedAt(hit);
216 if (!startHit) {
217 AliError("The unchecked hit doesn't exist");
218 break;
219 }
220 pmt=startHit->Pmt();
221 Int_t numpmt=pmt-1;
222 Double_t e=startHit->Etot();
223 volume = startHit->Volume();
224
225 // if(e>0 && RegisterPhotoE(numpmt,e)) {
226 if(e>0 ) {
227 countE[numpmt]++;
228 besttime[numpmt] = startHit->Time();
229 if(besttime[numpmt]<time[numpmt])
230 {
231 time[numpmt]=besttime[numpmt];
232 }
233 } //photoelectron accept
234 } //hits loop
235 } //track loop
236
237 //spread time right&left by 25ps && besttime
238 Float_t c = 0.0299792; // cm/ps
239
240 Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
241 for (Int_t ipmt=0; ipmt<12; ipmt++){
242 if(countE[ipmt] > threshold) {
243 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
244 if(timeGaus[ipmt]<besttimeleft){
245 besttimeleft=timeGaus[ipmt]; //timeleft
246 pmtBestLeft=ipmt;}
247 }
248 }
249 for ( Int_t ipmt=12; ipmt<24; ipmt++){
250 if(countE[ipmt] > threshold) {
251 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
252 if(timeGaus[ipmt]<besttimeright) {
253 besttimeright=timeGaus[ipmt]; //timeright
254 pmtBestRight=ipmt;}
255 }
256 }
257 //folding with alignmentz position distribution
258 if( besttimeleft > 10000. && besttimeleft <15000)
259 bestLeftTDC=Int_t ((besttimeleft+1000*timeDelayCFD[pmtBestLeft])
260 /channelWidth);
261
262 if( besttimeright > 10000. && besttimeright <15000)
263 bestRightTDC=Int_t ((besttimeright+1000*timeDelayCFD[pmtBestRight])
264 /channelWidth);
265
266 if (bestRightTDC < 99999 && bestLeftTDC < 99999)
267 {
268 timeDiff=Int_t (((besttimeleft-besttimeright)+1000*delayVertex)
269 /channelWidth);
270 meanTime=Int_t (((besttimeright+1000*timeDelayCFD[pmtBestLeft]+
271 besttimeleft+1000*timeDelayCFD[pmtBestLeft])/2.)
272 /channelWidth);
273 }
274 AliDebug(10,Form(" time right& left %i %i time diff && mean time in channels %i %i",bestRightTDC,bestLeftTDC, timeDiff, meanTime));
275 for (Int_t i=0; i<24; i++)
276 {
277 Float_t al = countE[i];
278 if (al>threshold && timeGaus[i]<50000 ) {
279 //fill ADC
280 // QTC procedure:
281 // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
282 // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
283 // channel 25ps
284 qt= 50.*al*gain[i]/ph2Mip; // 50mv/Mip amp in mV
285 // fill TDC
286 trCFD = Int_t (timeGaus[i] + 1000.*timeDelayCFD[i])/channelWidth;
287 trLED= Int_t (timeGaus[i] + 1000.*timeDelayLED[i]);
288 sl = ((TGraph*)slewingLED.At(i))->Eval(qt);
289 trLED = Int_t(( trLED + 1000*sl )/channelWidth);
290 qtCh=Int_t (1000.*TMath::Log(qt)) / channelWidth;
291 fADC0->AddAt(0,i);
292 fADC->AddAt(qtCh,i);
293 ftimeCFD->AddAt(Int_t (trCFD),i);
294 ftimeLED->AddAt(trLED,i);
295 // sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
296 sumMult += Int_t (qt/sumMultCoeff) ;
297
298 AliDebug(10,Form(" pmt %i : time in ns %f time in channels %i ",
299 i, timeGaus[i],trCFD ));
300 AliDebug(10,Form(" qt in mV %f qt in ns %f qt in channels %i ",qt,
301 TMath::Log(qt), qtCh));
302 }
303 } //pmt loop
304
305 if (sumMult > threshold){
306 fSumMult = Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
307 /channelWidth);
308 AliDebug(10,Form("summult mv %i mult in chammens %i in ps %i ",
309 sumMult, fSumMult, fSumMult*channelWidth));
310 }
311 // if ( besttimeright<99999 || besttimeleft < 99999) {
312
313 fT0->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
314 ftimeCFD,fADC,ftimeLED,fADC0);
315 // }
316
317 AliDebug(10,Form(" Digits wrote bestRightTDC %i bestLeftTDC %i meanTime %i timeDiff %i fSumMult %i ", bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult ));
318 pOutStartLoader->UnloadHits();
319 } //input streams loop
320
321 //load digits
322 pOutStartLoader->LoadDigits("UPDATE");
323 TTree *treeD = pOutStartLoader->TreeD();
324 if (treeD == 0x0) {
325 pOutStartLoader->MakeTree("D");
326 treeD = pOutStartLoader->TreeD();
327 }
328 treeD->Reset();
329 fT0 = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
330 // Make a branch in the tree
331 fT0->MakeBranch("D");
332 treeD->Fill();
333
334 pOutStartLoader->WriteDigits("OVERWRITE");
335
336 fT0->ResetDigits();
337 pOutStartLoader->UnloadDigits();
338
339}
340
341
342//------------------------------------------------------------------------
343Bool_t AliT0Digitizer::RegisterPhotoE(Int_t ipmt,Double_t energy)
344{
345
346
347 // Float_t hc=197.326960*1.e6; //mev*nm
348 Double_t hc=1.973*1.e-6; //gev*nm
349 Float_t lambda=hc/energy;
350 Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
351 Double_t p = gRandom->Rndm();
352
353 if (p > eff)
354 return kFALSE;
355
356 return kTRUE;
357}
358
359//----------------------------------------------------------------------------