new shifter histogram implemented HeaderBCID vs TRM BC ID
[u/mrichter/AliRoot.git] / T0 / AliT0Digitizer.cxx
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dc7ca31d 1
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
9edefa04 17/* $Id$ */
dc7ca31d 18
94249139 19/******************************************************************
20 * Produde digits from hits
21 * digits is TObject and includes
22 * We are writing array if C & A TDC
23 * C & A ADC (will need for slow simulation)
24 * TOF first particle C & A
25 * mean time and time difference (vertex position)
26 *
27 * Alla.Maevskaya@cern.ch
28 ****************************************************************/
29
30
dc7ca31d 31#include <TArrayI.h>
9edefa04 32#include <TFile.h>
dc7ca31d 33#include <TGraph.h>
9edefa04 34#include <TH1F.h>
35#include <TMath.h>
36#include <TRandom.h>
37#include <TTree.h>
dc7ca31d 38
39#include "AliLog.h"
40#include "AliT0Digitizer.h"
41#include "AliT0.h"
42#include "AliT0hit.h"
43#include "AliT0digit.h"
44#include "AliRunDigitizer.h"
dc7ca31d 45#include "AliRun.h"
46#include <AliLoader.h>
47#include <AliRunLoader.h>
48#include <stdlib.h>
dc7ca31d 49#include "AliT0Parameters.h"
dc7ca31d 50
51ClassImp(AliT0Digitizer)
52
53//___________________________________________
c41ceaac 54 AliT0Digitizer::AliT0Digitizer() :AliDigitizer(),
55 fT0(0),
56 fHits(0),
57 fdigits(0),
58 ftimeCFD(new TArrayI(24)),
59 ftimeLED (new TArrayI(24)),
60 fADC(new TArrayI(24)),
61 fADC0 (new TArrayI(24)),
62 fSumMult(0),
29d3e0eb 63 fAmpLED(0),
d0bcd1fb 64 fAmpQTC(0),
29d3e0eb 65 fParam(0)
dc7ca31d 66{
67// Default ctor - don't use it
68 ;
69}
70
71//___________________________________________
72AliT0Digitizer::AliT0Digitizer(AliRunDigitizer* manager)
73 :AliDigitizer(manager),
74 fT0(0),
75 fHits(0),
76 fdigits(0),
c41ceaac 77 ftimeCFD(new TArrayI(24)),
78 ftimeLED (new TArrayI(24)),
79 fADC(new TArrayI(24)),
80 fADC0 (new TArrayI(24)),
81 fSumMult(0),
29d3e0eb 82 fAmpLED(0),
d0bcd1fb 83 fAmpQTC(0),
29d3e0eb 84 fParam(0)
dc7ca31d 85{
86// ctor which should be used
87
88 AliDebug(1,"processed");
29d3e0eb 89 fParam = AliT0Parameters::Instance();
90 fParam->Init();
dc7ca31d 91
29d3e0eb 92 for (Int_t i=0; i<24; i++){
d0bcd1fb 93 TGraph* gr = fParam ->GetAmpLED(i);
29d3e0eb 94 Int_t np = gr->GetN();
95 Double_t *x = gr->GetX();
96 Double_t *y = gr->GetY();
d0bcd1fb 97
29d3e0eb 98 Double_t *x1 = new Double_t[np];
99 Double_t *y1 = new Double_t[np];
100 for (Int_t ii=0; ii<np; ii++) {
d0bcd1fb 101 y1[ii]=y[np-ii-1];
102 x1[ii]=x[np-ii-1];
29d3e0eb 103 }
104
105 TGraph *grInverse = new TGraph(np,y1,x1);
29d3e0eb 106 fAmpLED.AddAtAndExpand(grInverse,i);
107 }
d0bcd1fb 108 for (Int_t i=0; i<24; i++){
109 TGraph* grq = fParam ->GetQTC(i);
110 Int_t npq = grq->GetN();
111 Double_t *xq = grq->GetX();
112 Double_t *yq = grq->GetY();
113 Double_t *x1q = new Double_t[npq];
114 Double_t *y1q = new Double_t[npq];
115 for (Int_t ii=1; ii<npq; ii++) {
116 y1q[ii]=yq[ii-1];
117 x1q[ii]=xq[ii-1];
118 }
119 TGraph *grInverseQTC = new TGraph(npq,y1q,x1q);
120 fAmpQTC.AddAtAndExpand(grInverseQTC,i);
121 }
dc7ca31d 122}
12e9daf9 123
dc7ca31d 124//------------------------------------------------------------------------
125AliT0Digitizer::~AliT0Digitizer()
126{
127// Destructor
128
129 AliDebug(1,"T0");
130
131 delete ftimeCFD;
132 delete fADC;
133 delete ftimeLED;
134 delete fADC0;
29d3e0eb 135 // delete fAmpLED;
dc7ca31d 136}
137
29d3e0eb 138//------------------------------------------------------------------------
dc7ca31d 139Bool_t AliT0Digitizer::Init()
140{
141// Initialization
142 AliDebug(1," Init");
143 return kTRUE;
144}
145
dc7ca31d 146//---------------------------------------------------------------------
dc7ca31d 147void AliT0Digitizer::Exec(Option_t* /*option*/)
148{
149
150 /*
151 Produde digits from hits
152 digits is TObject and includes
c41ceaac 153 We are writing array if C & A TDC
154 C & A ADC (will need for slow simulation)
155 TOF first particle C & A
dc7ca31d 156 mean time and time difference (vertex position)
157
158 */
159
160 //output loader
161 AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
162 AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");
163
164 AliDebug(1,"start...");
165 //input loader
166 //
167 // From hits to digits
168 //
74adb36a 169 Int_t hit, nhits;
dc7ca31d 170 Int_t countE[24];
171 Int_t volume, pmt, trCFD, trLED;
172 Float_t sl, qt;
af3bb1cc 173 Int_t bestATDC=0;
174 Int_t bestCTDC=0;
d0bcd1fb 175 Float_t qtCh=0;
dc7ca31d 176 Float_t time[24], besttime[24], timeGaus[24] ;
74adb36a 177 //Q->T-> coefficients !!!! should be asked!!!
178 Float_t timeDelayCFD[24];
dc7ca31d 179 Int_t threshold =50; //photoelectrons
180 Float_t zdetA, zdetC;
74adb36a 181 Int_t sumMultCoeff = 100;
740f0839 182 Int_t refpoint=0;
446d6ec4 183
29d3e0eb 184 Int_t ph2Mip = fParam->GetPh2Mip();
8955c6b4 185 Float_t channelWidth = fParam->GetChannelWidth() ;
29d3e0eb 186 Float_t delayVertex = fParam->GetTimeDelayTVD();
5325480c 187
d0bcd1fb 188
29d3e0eb 189 zdetC = TMath::Abs(fParam->GetZPosition("T0/C/PMT1"));
190 zdetA = TMath::Abs(fParam->GetZPosition("T0/A/PMT15"));
74adb36a 191
d0bcd1fb 192 // printf(" !!!!!Z det A = %f C = % f",zdetA,zdetC);
74adb36a 193 AliT0hit *startHit;
194 TBranch *brHits=0;
195
dc7ca31d 196 Int_t nFiles=fManager->GetNinputs();
197 for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
198 if (inputFile < nFiles-1) {
74adb36a 199 AliWarning(Form("ignoring input stream %d", inputFile));
200 continue;
201
dc7ca31d 202 }
203
c41ceaac 204 Float_t besttimeC=99999.;
205 Float_t besttimeA=99999.;
af3bb1cc 206 Int_t pmtBestC=99999;
207 Int_t pmtBestA=99999;
208 Int_t timeDiff=99999, meanTime=99999;
dc7ca31d 209 Int_t sumMult =0; fSumMult=0;
c41ceaac 210 bestATDC = 99999; bestCTDC = 99999;
dc7ca31d 211
c41ceaac 212
dc7ca31d 213 ftimeCFD -> Reset();
214 fADC -> Reset();
215 fADC0 -> Reset();
216 ftimeLED ->Reset();
217 for (Int_t i0=0; i0<24; i0++)
218 {
af3bb1cc 219 time[i0]=besttime[i0]=timeGaus[i0]=999999; countE[i0]=0;
dc7ca31d 220 }
221 AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
222 AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
223 if (!inRL->GetAliRun()) inRL->LoadgAlice();
c2337900 224 fT0 = (AliT0*)inRL ->GetAliRun()->GetDetector("T0");
dc7ca31d 225
226 //read Hits
227 pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
955401cc 228 fHits = fT0->Hits ();
dc7ca31d 229 TTree *th = pInStartLoader->TreeH();
230 brHits = th->GetBranch("T0");
231 if (brHits) {
232 fT0->SetHitsAddressBranch(brHits);
233 }else{
af3bb1cc 234 AliWarning("Branch T0 hit not found for this event");
235 // fT0->AddDigit(bestATDC,bestCTDC,meanTime,timeDiff,fSumMult, refpoint,
236 // ftimeCFD,fADC0,ftimeLED,fADC);
237 continue;
dc7ca31d 238 }
239 Int_t ntracks = (Int_t) th->GetEntries();
240
241 if (ntracks<=0) return;
242 // Start loop on tracks in the hits containers
243 for (Int_t track=0; track<ntracks;track++) {
244 brHits->GetEntry(track);
245 nhits = fHits->GetEntriesFast();
246 for (hit=0;hit<nhits;hit++)
247 {
248 startHit = (AliT0hit*) fHits->UncheckedAt(hit);
249 if (!startHit) {
250 AliError("The unchecked hit doesn't exist");
251 break;
252 }
253 pmt=startHit->Pmt();
254 Int_t numpmt=pmt-1;
255 Double_t e=startHit->Etot();
256 volume = startHit->Volume();
257
dc7ca31d 258 if(e>0 ) {
259 countE[numpmt]++;
260 besttime[numpmt] = startHit->Time();
261 if(besttime[numpmt]<time[numpmt])
262 {
263 time[numpmt]=besttime[numpmt];
264 }
265 } //photoelectron accept
266 } //hits loop
267 } //track loop
268
c41ceaac 269 //spread time A&C by 25ps && besttime
dc7ca31d 270 Float_t c = 0.0299792; // cm/ps
271
272 Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
273 for (Int_t ipmt=0; ipmt<12; ipmt++){
274 if(countE[ipmt] > threshold) {
275 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
c41ceaac 276 if(timeGaus[ipmt]<besttimeC){
277 besttimeC=timeGaus[ipmt]; //timeC
278 pmtBestC=ipmt;}
9a5cba6d 279 }
dc7ca31d 280 }
9a5cba6d 281 for ( Int_t ipmt=12; ipmt<24; ipmt++){
dc7ca31d 282 if(countE[ipmt] > threshold) {
283 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
c41ceaac 284 if(timeGaus[ipmt]<besttimeA) {
285 besttimeA=timeGaus[ipmt]; //timeA
286 pmtBestA=ipmt;}
dc7ca31d 287 }
288 }
dc7ca31d 289
6bfb23c3 290 timeDelayCFD[0] = fParam->GetTimeDelayCFD(0);
446d6ec4 291
dc7ca31d 292 for (Int_t i=0; i<24; i++)
293 {
294 Float_t al = countE[i];
295 if (al>threshold && timeGaus[i]<50000 ) {
296 //fill ADC
297 // QTC procedure:
298 // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
299 // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
300 // channel 25ps
d0bcd1fb 301 qt= al/ph2Mip; // 50mv/Mip amp in mV
71cb50f8 302 // before will we have calibration for high multiplicity
205262fe 303 // if (qt > 115.) qt =115.; //must be fix!!!
dc7ca31d 304 // fill TDC
29d3e0eb 305 timeDelayCFD[i] = fParam->GetTimeDelayCFD(i);
12e9daf9 306 trCFD = Int_t (timeGaus[i]/channelWidth + timeDelayCFD[i]);
d0bcd1fb 307
29d3e0eb 308 TGraph* gr = ((TGraph*)fAmpLED.At(i));
74adb36a 309 sl = gr->Eval(qt);
29d3e0eb 310
d0bcd1fb 311 TGraph* gr1 = ((TGraph*)fAmpQTC.At(i));
312 qtCh = gr1->Eval(qt);
dc7ca31d 313 fADC0->AddAt(0,i);
d52fab81 314 if(qtCh)
40c34546 315 fADC->AddAt(Int_t(qtCh),i);
dc7ca31d 316 // sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
d0bcd1fb 317 sumMult += Int_t (qtCh/sumMultCoeff) ;
dc7ca31d 318
74adb36a 319 // put slewing
71cb50f8 320 TGraph *fu=(TGraph*) fParam ->GetWalk(i);
74adb36a 321 Float_t slew=fu->Eval(Float_t(qtCh));
12e9daf9 322
446d6ec4 323 // trCFD=trCFD-Int_t(fMaxValue[i]-slew);
40c34546 324 trCFD = trCFD + Int_t(slew); //for the same channel as cosmic
74adb36a 325 ftimeCFD->AddAt(Int_t (trCFD),i);
d0bcd1fb 326 trLED = Int_t(trCFD + sl );
327 ftimeLED->AddAt(trLED,i);
446d6ec4 328 AliDebug(10,Form(" pmt %i : time in ns %f time in channels %i LEd %i ", i, timeGaus[i],trCFD, trLED ));
d0bcd1fb 329 AliDebug(10,Form(" qt in MIP %f led-cfd in %f qt in channels %f ",qt, sl, qtCh));
74adb36a 330
dc7ca31d 331 }
332 } //pmt loop
333
9a5cba6d 334 //folding with alignmentz position distribution
335 if( besttimeC > 10000. && besttimeC <15000)
336 bestCTDC=Int_t ((besttimeC+timeDelayCFD[pmtBestC])
337 /channelWidth);
338
339 if( besttimeA > 10000. && besttimeA <15000)
340 bestATDC=Int_t ((besttimeA+timeDelayCFD[pmtBestA])
341 /channelWidth);
342
343 if (bestATDC < 99999 && bestCTDC < 99999)
344 {
345 timeDiff=Int_t (((besttimeC-besttimeA)+1000*delayVertex)
346 /channelWidth);
446d6ec4 347 meanTime=Int_t (((besttimeC+besttimeA)/2. )/channelWidth);
9a5cba6d 348 }
9a5cba6d 349
dc7ca31d 350 if (sumMult > threshold){
351 fSumMult = Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
352 /channelWidth);
b5a9f753 353 AliDebug(10,Form("summult mv %i mult in chammens %i in ps %f ",
dc7ca31d 354 sumMult, fSumMult, fSumMult*channelWidth));
355 }
dc7ca31d 356
740f0839 357 fT0->AddDigit(bestATDC,bestCTDC,meanTime,timeDiff,fSumMult, refpoint,
c41ceaac 358 ftimeCFD,fADC0,ftimeLED,fADC);
dc7ca31d 359
740f0839 360
361 AliDebug(10,Form(" Digits wrote refpoint %i bestATDC %i bestCTDC %i meanTime %i timeDiff %i fSumMult %i ",refpoint ,bestATDC,bestCTDC,meanTime,timeDiff,fSumMult ));
dc7ca31d 362 pOutStartLoader->UnloadHits();
363 } //input streams loop
364
365 //load digits
366 pOutStartLoader->LoadDigits("UPDATE");
367 TTree *treeD = pOutStartLoader->TreeD();
368 if (treeD == 0x0) {
369 pOutStartLoader->MakeTree("D");
370 treeD = pOutStartLoader->TreeD();
371 }
372 treeD->Reset();
373 fT0 = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
374 // Make a branch in the tree
375 fT0->MakeBranch("D");
376 treeD->Fill();
377
378 pOutStartLoader->WriteDigits("OVERWRITE");
379
380 fT0->ResetDigits();
381 pOutStartLoader->UnloadDigits();
382
383}