correct calibration of short runs
[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);
4cde7903 94 if(gr) {
95 Int_t np = gr->GetN();
96 Double_t *x = gr->GetX();
97 Double_t *y = gr->GetY();
98
99 Double_t *x1 = new Double_t[np];
100 Double_t *y1 = new Double_t[np];
101 for (Int_t ii=0; ii<np; ii++) {
102 y1[ii]=y[np-ii-1];
103 x1[ii]=x[np-ii-1];
104 }
5c25947b 105 TGraph *grInverse = new TGraph(np,y1,x1);
106 fAmpLED.AddAtAndExpand(grInverse,i);
d097d860 107 if (x1) delete [] x1;
108 if (y1) delete [] y1;
4cde7903 109 }
29d3e0eb 110 }
d0bcd1fb 111 for (Int_t i=0; i<24; i++){
112 TGraph* grq = fParam ->GetQTC(i);
4cde7903 113 if(grq){
114 Int_t npq = grq->GetN();
115 Double_t *xq = grq->GetX();
116 Double_t *yq = grq->GetY();
117 Double_t *x1q = new Double_t[npq];
118 Double_t *y1q = new Double_t[npq];
119 for (Int_t ii=1; ii<npq; ii++) {
120 y1q[ii]=yq[ii-1];
121 x1q[ii]=xq[ii-1];
122 }
123 TGraph *grInverseQTC = new TGraph(npq,y1q,x1q);
124 fAmpQTC.AddAtAndExpand(grInverseQTC,i);
d097d860 125 if (x1q) delete [] x1q;
126 if (y1q) delete [] y1q;
5c25947b 127
d0bcd1fb 128 }
d0bcd1fb 129 }
dc7ca31d 130}
12e9daf9 131
4cde7903 132
dc7ca31d 133//------------------------------------------------------------------------
134AliT0Digitizer::~AliT0Digitizer()
135{
136// Destructor
137
138 AliDebug(1,"T0");
139
140 delete ftimeCFD;
141 delete fADC;
142 delete ftimeLED;
143 delete fADC0;
29d3e0eb 144 // delete fAmpLED;
dc7ca31d 145}
146
29d3e0eb 147//------------------------------------------------------------------------
dc7ca31d 148Bool_t AliT0Digitizer::Init()
149{
150// Initialization
151 AliDebug(1," Init");
152 return kTRUE;
153}
154
dc7ca31d 155//---------------------------------------------------------------------
dc7ca31d 156void AliT0Digitizer::Exec(Option_t* /*option*/)
157{
158
159 /*
160 Produde digits from hits
161 digits is TObject and includes
c41ceaac 162 We are writing array if C & A TDC
163 C & A ADC (will need for slow simulation)
164 TOF first particle C & A
dc7ca31d 165 mean time and time difference (vertex position)
166
167 */
168
169 //output loader
170 AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
171 AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");
172
173 AliDebug(1,"start...");
174 //input loader
175 //
176 // From hits to digits
177 //
74adb36a 178 Int_t hit, nhits;
dc7ca31d 179 Int_t countE[24];
180 Int_t volume, pmt, trCFD, trLED;
4cde7903 181 Float_t sl=0, qt=0;
af3bb1cc 182 Int_t bestATDC=0;
183 Int_t bestCTDC=0;
d0bcd1fb 184 Float_t qtCh=0;
dc7ca31d 185 Float_t time[24], besttime[24], timeGaus[24] ;
74adb36a 186 //Q->T-> coefficients !!!! should be asked!!!
187 Float_t timeDelayCFD[24];
dc7ca31d 188 Int_t threshold =50; //photoelectrons
189 Float_t zdetA, zdetC;
74adb36a 190 Int_t sumMultCoeff = 100;
740f0839 191 Int_t refpoint=0;
446d6ec4 192
29d3e0eb 193 Int_t ph2Mip = fParam->GetPh2Mip();
8955c6b4 194 Float_t channelWidth = fParam->GetChannelWidth() ;
29d3e0eb 195 Float_t delayVertex = fParam->GetTimeDelayTVD();
5325480c 196
d0bcd1fb 197
29d3e0eb 198 zdetC = TMath::Abs(fParam->GetZPosition("T0/C/PMT1"));
199 zdetA = TMath::Abs(fParam->GetZPosition("T0/A/PMT15"));
74adb36a 200
d0bcd1fb 201 // printf(" !!!!!Z det A = %f C = % f",zdetA,zdetC);
74adb36a 202 AliT0hit *startHit;
203 TBranch *brHits=0;
204
dc7ca31d 205 Int_t nFiles=fManager->GetNinputs();
206 for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
207 if (inputFile < nFiles-1) {
74adb36a 208 AliWarning(Form("ignoring input stream %d", inputFile));
209 continue;
210
dc7ca31d 211 }
4cde7903 212 Float_t slew = 0;
c41ceaac 213 Float_t besttimeC=99999.;
214 Float_t besttimeA=99999.;
af3bb1cc 215 Int_t pmtBestC=99999;
216 Int_t pmtBestA=99999;
217 Int_t timeDiff=99999, meanTime=99999;
dc7ca31d 218 Int_t sumMult =0; fSumMult=0;
c41ceaac 219 bestATDC = 99999; bestCTDC = 99999;
dc7ca31d 220
c41ceaac 221
dc7ca31d 222 ftimeCFD -> Reset();
223 fADC -> Reset();
224 fADC0 -> Reset();
225 ftimeLED ->Reset();
226 for (Int_t i0=0; i0<24; i0++)
227 {
af3bb1cc 228 time[i0]=besttime[i0]=timeGaus[i0]=999999; countE[i0]=0;
dc7ca31d 229 }
230 AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
231 AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
232 if (!inRL->GetAliRun()) inRL->LoadgAlice();
c2337900 233 fT0 = (AliT0*)inRL ->GetAliRun()->GetDetector("T0");
dc7ca31d 234
235 //read Hits
236 pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
955401cc 237 fHits = fT0->Hits ();
dc7ca31d 238 TTree *th = pInStartLoader->TreeH();
239 brHits = th->GetBranch("T0");
240 if (brHits) {
241 fT0->SetHitsAddressBranch(brHits);
242 }else{
af3bb1cc 243 AliWarning("Branch T0 hit not found for this event");
244 // fT0->AddDigit(bestATDC,bestCTDC,meanTime,timeDiff,fSumMult, refpoint,
245 // ftimeCFD,fADC0,ftimeLED,fADC);
246 continue;
dc7ca31d 247 }
248 Int_t ntracks = (Int_t) th->GetEntries();
249
250 if (ntracks<=0) return;
251 // Start loop on tracks in the hits containers
252 for (Int_t track=0; track<ntracks;track++) {
253 brHits->GetEntry(track);
254 nhits = fHits->GetEntriesFast();
255 for (hit=0;hit<nhits;hit++)
256 {
257 startHit = (AliT0hit*) fHits->UncheckedAt(hit);
258 if (!startHit) {
259 AliError("The unchecked hit doesn't exist");
260 break;
261 }
262 pmt=startHit->Pmt();
263 Int_t numpmt=pmt-1;
264 Double_t e=startHit->Etot();
265 volume = startHit->Volume();
266
dc7ca31d 267 if(e>0 ) {
268 countE[numpmt]++;
269 besttime[numpmt] = startHit->Time();
270 if(besttime[numpmt]<time[numpmt])
271 {
272 time[numpmt]=besttime[numpmt];
273 }
274 } //photoelectron accept
275 } //hits loop
276 } //track loop
277
c41ceaac 278 //spread time A&C by 25ps && besttime
dc7ca31d 279 Float_t c = 0.0299792; // cm/ps
280
281 Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
282 for (Int_t ipmt=0; ipmt<12; ipmt++){
283 if(countE[ipmt] > threshold) {
284 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
c41ceaac 285 if(timeGaus[ipmt]<besttimeC){
286 besttimeC=timeGaus[ipmt]; //timeC
287 pmtBestC=ipmt;}
9a5cba6d 288 }
dc7ca31d 289 }
9a5cba6d 290 for ( Int_t ipmt=12; ipmt<24; ipmt++){
dc7ca31d 291 if(countE[ipmt] > threshold) {
292 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
c41ceaac 293 if(timeGaus[ipmt]<besttimeA) {
294 besttimeA=timeGaus[ipmt]; //timeA
295 pmtBestA=ipmt;}
dc7ca31d 296 }
297 }
dc7ca31d 298
6bfb23c3 299 timeDelayCFD[0] = fParam->GetTimeDelayCFD(0);
446d6ec4 300
dc7ca31d 301 for (Int_t i=0; i<24; i++)
302 {
303 Float_t al = countE[i];
304 if (al>threshold && timeGaus[i]<50000 ) {
305 //fill ADC
306 // QTC procedure:
307 // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
308 // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
309 // channel 25ps
d0bcd1fb 310 qt= al/ph2Mip; // 50mv/Mip amp in mV
71cb50f8 311 // before will we have calibration for high multiplicity
205262fe 312 // if (qt > 115.) qt =115.; //must be fix!!!
dc7ca31d 313 // fill TDC
29d3e0eb 314 timeDelayCFD[i] = fParam->GetTimeDelayCFD(i);
12e9daf9 315 trCFD = Int_t (timeGaus[i]/channelWidth + timeDelayCFD[i]);
d0bcd1fb 316
29d3e0eb 317 TGraph* gr = ((TGraph*)fAmpLED.At(i));
4cde7903 318 if(gr) sl = gr->Eval(qt);
29d3e0eb 319
d0bcd1fb 320 TGraph* gr1 = ((TGraph*)fAmpQTC.At(i));
4cde7903 321 if(gr1) qtCh = gr1->Eval(qt);
dc7ca31d 322 fADC0->AddAt(0,i);
d52fab81 323 if(qtCh)
40c34546 324 fADC->AddAt(Int_t(qtCh),i);
dc7ca31d 325 // sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
d0bcd1fb 326 sumMult += Int_t (qtCh/sumMultCoeff) ;
dc7ca31d 327
74adb36a 328 // put slewing
71cb50f8 329 TGraph *fu=(TGraph*) fParam ->GetWalk(i);
4cde7903 330 if(fu) slew=fu->Eval(Float_t(qtCh));
331
446d6ec4 332 // trCFD=trCFD-Int_t(fMaxValue[i]-slew);
40c34546 333 trCFD = trCFD + Int_t(slew); //for the same channel as cosmic
74adb36a 334 ftimeCFD->AddAt(Int_t (trCFD),i);
d0bcd1fb 335 trLED = Int_t(trCFD + sl );
336 ftimeLED->AddAt(trLED,i);
4cde7903 337 AliDebug(1,Form(" pmt %i : delay %f time in ns %f time in channels %i LEd %i ", i, timeDelayCFD[i], timeGaus[i],trCFD, trLED ));
338 AliDebug(1,Form(" qt in MIP %f led-cfd in %f qt in channels %f ",qt, sl, qtCh));
74adb36a 339
dc7ca31d 340 }
341 } //pmt loop
342
9a5cba6d 343 //folding with alignmentz position distribution
344 if( besttimeC > 10000. && besttimeC <15000)
345 bestCTDC=Int_t ((besttimeC+timeDelayCFD[pmtBestC])
346 /channelWidth);
347
348 if( besttimeA > 10000. && besttimeA <15000)
349 bestATDC=Int_t ((besttimeA+timeDelayCFD[pmtBestA])
350 /channelWidth);
351
352 if (bestATDC < 99999 && bestCTDC < 99999)
353 {
354 timeDiff=Int_t (((besttimeC-besttimeA)+1000*delayVertex)
355 /channelWidth);
446d6ec4 356 meanTime=Int_t (((besttimeC+besttimeA)/2. )/channelWidth);
9a5cba6d 357 }
9a5cba6d 358
dc7ca31d 359 if (sumMult > threshold){
360 fSumMult = Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
361 /channelWidth);
b5a9f753 362 AliDebug(10,Form("summult mv %i mult in chammens %i in ps %f ",
dc7ca31d 363 sumMult, fSumMult, fSumMult*channelWidth));
364 }
dc7ca31d 365
740f0839 366 fT0->AddDigit(bestATDC,bestCTDC,meanTime,timeDiff,fSumMult, refpoint,
c41ceaac 367 ftimeCFD,fADC0,ftimeLED,fADC);
dc7ca31d 368
740f0839 369
370 AliDebug(10,Form(" Digits wrote refpoint %i bestATDC %i bestCTDC %i meanTime %i timeDiff %i fSumMult %i ",refpoint ,bestATDC,bestCTDC,meanTime,timeDiff,fSumMult ));
dc7ca31d 371 pOutStartLoader->UnloadHits();
372 } //input streams loop
373
374 //load digits
375 pOutStartLoader->LoadDigits("UPDATE");
376 TTree *treeD = pOutStartLoader->TreeD();
377 if (treeD == 0x0) {
378 pOutStartLoader->MakeTree("D");
379 treeD = pOutStartLoader->TreeD();
380 }
381 treeD->Reset();
382 fT0 = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
383 // Make a branch in the tree
384 fT0->MakeBranch("D");
385 treeD->Fill();
386
387 pOutStartLoader->WriteDigits("OVERWRITE");
388
389 fT0->ResetDigits();
390 pOutStartLoader->UnloadDigits();
391
392}