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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // V-Zero Detector // | |
21 | // This class contains the base procedures for the VZERO detector // | |
22 | // Default geometry of November 2003 : V0R box is 4.4 cm thick // | |
23 | // scintillators are 2 cm thick // | |
24 | // All comments should be sent to Brigitte CHEYNIS : // | |
25 | // b.cheynis@ipnl.in2p3.fr // | |
26 | // // | |
27 | // // | |
28 | /////////////////////////////////////////////////////////////////////////// | |
29 | ||
30 | ||
31 | // --- Standard libraries --- | |
32 | #include <Riostream.h> | |
33 | #include <stdlib.h> | |
34 | ||
35 | // --- ROOT libraries --- | |
36 | #include <TNamed.h> | |
37 | #include "TROOT.h" | |
38 | #include "TFile.h" | |
39 | #include "TNetFile.h" | |
40 | #include "TRandom.h" | |
41 | #include "TTree.h" | |
42 | #include "TBranch.h" | |
43 | #include "TClonesArray.h" | |
44 | #include "TStopwatch.h" | |
45 | #include "TParameter.h" | |
46 | #include "TF1.h" | |
47 | ||
48 | // --- AliRoot header files --- | |
49 | #include "AliRun.h" | |
50 | #include "AliMC.h" | |
51 | #include "AliVZERO.h" | |
52 | #include "AliVZEROLoader.h" | |
53 | #include "AliVZERODigitizer.h" | |
54 | #include "AliVZEROBuffer.h" | |
55 | #include "AliDigitizationInput.h" | |
56 | #include "AliVZEROdigit.h" | |
57 | #include "AliVZEROSDigit.h" | |
58 | #include "AliDAQ.h" | |
59 | #include "AliRawReader.h" | |
60 | #include "AliCDBManager.h" | |
61 | #include "AliCDBEntry.h" | |
62 | #include "AliVZERORawStream.h" | |
63 | #include "AliVZEROCalibData.h" | |
64 | #include "AliVZERORecoParam.h" | |
65 | #include "AliVZEROReconstructor.h" | |
66 | ||
67 | ClassImp(AliVZERO) | |
68 | //__________________________________________________________________ | |
69 | AliVZERO::AliVZERO(): AliDetector(), | |
70 | fIdSens1(0), | |
71 | fThickness(0.), | |
72 | fThickness1(0.), | |
73 | fMaxStepQua(0.), | |
74 | fMaxStepAlu(0.), | |
75 | fMaxDestepQua(0.), | |
76 | fMaxDestepAlu(0.), | |
77 | fCalibData(NULL), | |
78 | fTimeSlewing(NULL), | |
79 | fSignalShape(NULL), | |
80 | fRecoParam(NULL) | |
81 | { | |
82 | /// Default Constructor | |
83 | ||
84 | AliDebug(1,Form("default (empty) ctor this=%p",this)); | |
85 | fIshunt = 0; | |
86 | ||
87 | for(Int_t i = 0 ; i < 64; ++i) { | |
88 | fNBins[i] = 0; | |
89 | fBinSize[i] = 0; | |
90 | } | |
91 | } | |
92 | ||
93 | //_____________________________________________________________________________ | |
94 | AliVZERO::AliVZERO(const char *name, const char *title) | |
95 | : AliDetector(name,title), | |
96 | fIdSens1(0), | |
97 | fThickness(4.4), | |
98 | fThickness1(2.0), | |
99 | fMaxStepQua(0.05), | |
100 | fMaxStepAlu(0.01), | |
101 | fMaxDestepQua(-1.0), | |
102 | fMaxDestepAlu(-1.0), | |
103 | fCalibData(NULL), | |
104 | fTimeSlewing(NULL), | |
105 | fSignalShape(NULL), | |
106 | fRecoParam(NULL) | |
107 | { | |
108 | ||
109 | // Standard constructor for VZERO Detector | |
110 | ||
111 | AliDebug(1,Form("ctor this=%p",this)); | |
112 | ||
113 | // fIshunt = 1; // All hits are associated with primary particles | |
114 | ||
115 | fHits = new TClonesArray("AliVZEROhit", 400); | |
116 | fDigits = new TClonesArray("AliVZEROdigit",400); | |
117 | ||
118 | gAlice->GetMCApp()->AddHitList(fHits); | |
119 | ||
120 | // fThickness = 4.4; // total thickness of the V0R box in cm | |
121 | // fThickness1 = 2.0; // thickness of scintillating cells in cm | |
122 | // | |
123 | // fMaxStepQua = 0.05; | |
124 | // fMaxStepAlu = 0.01; | |
125 | // | |
126 | // fMaxDestepQua = -1.0; | |
127 | // fMaxDestepAlu = -1.0; | |
128 | ||
129 | for(Int_t i = 0 ; i < 64; ++i) { | |
130 | fNBins[i] = 0; | |
131 | fBinSize[i] = 0; | |
132 | } | |
133 | } | |
134 | ||
135 | //_____________________________________________________________________________ | |
136 | AliVZERO::~AliVZERO() | |
137 | { | |
138 | // | |
139 | // Default destructor for VZERO Detector | |
140 | // | |
141 | ||
142 | if (fHits) { | |
143 | fHits->Delete(); | |
144 | delete fHits; | |
145 | fHits=0; } | |
146 | ||
147 | if (fDigits) { | |
148 | fDigits->Delete(); | |
149 | delete fDigits; | |
150 | fDigits=0; } | |
151 | if (fSignalShape) { | |
152 | delete fSignalShape; | |
153 | fSignalShape = NULL; | |
154 | } | |
155 | if (fRecoParam) { | |
156 | delete fRecoParam; | |
157 | fRecoParam = NULL; | |
158 | } | |
159 | } | |
160 | ||
161 | //_____________________________________________________________________________ | |
162 | void AliVZERO::CreateGeometry() | |
163 | { | |
164 | // | |
165 | // Builds simple Geant3 geometry | |
166 | // | |
167 | } | |
168 | //_____________________________________________________________________________ | |
169 | void AliVZERO::CreateMaterials() | |
170 | { | |
171 | // | |
172 | // Creates materials used for Geant3 geometry | |
173 | // | |
174 | } | |
175 | ||
176 | //_____________________________________________________________________________ | |
177 | void AliVZERO::Init() | |
178 | { | |
179 | // | |
180 | // Initialises the VZERO class after it has been built | |
181 | // | |
182 | } | |
183 | ||
184 | ||
185 | //_____________________________________________________________________________ | |
186 | void AliVZERO::SetMaxStepQua(Float_t p1) | |
187 | { | |
188 | // | |
189 | // Possible parametrisation of steps in active materials | |
190 | // | |
191 | fMaxStepQua = p1; | |
192 | } | |
193 | ||
194 | //_____________________________________________________________________________ | |
195 | void AliVZERO::SetMaxStepAlu(Float_t p1) | |
196 | { | |
197 | // | |
198 | // Possible parametrisation of steps in Aluminum foils (not used in | |
199 | // version v2) | |
200 | // | |
201 | fMaxStepAlu = p1; | |
202 | } | |
203 | ||
204 | //_____________________________________________________________________________ | |
205 | void AliVZERO::SetMaxDestepQua(Float_t p1) | |
206 | { | |
207 | // | |
208 | // Possible parametrisation of steps in active materials (quartz) | |
209 | // | |
210 | fMaxDestepQua = p1; | |
211 | } | |
212 | ||
213 | //_____________________________________________________________________________ | |
214 | void AliVZERO::SetMaxDestepAlu(Float_t p1) | |
215 | { | |
216 | // | |
217 | // Possible parametrisation of steps in Aluminum (not used in | |
218 | // version v2) | |
219 | // | |
220 | fMaxDestepAlu = p1; | |
221 | } | |
222 | ||
223 | //_____________________________________________________________________________ | |
224 | AliLoader* AliVZERO::MakeLoader(const char* topfoldername) | |
225 | { | |
226 | // | |
227 | // Builds VZEROgetter (AliLoader type) | |
228 | // if detector wants to use customized getter, it must overload this method | |
229 | // | |
230 | // Info("MakeLoader","Creating AliVZEROLoader. Top folder is %s.",topfoldername); | |
231 | ||
232 | AliDebug(1,Form("Creating AliVZEROLoader, Top folder is %s ",topfoldername)); | |
233 | fLoader = new AliVZEROLoader(GetName(),topfoldername); | |
234 | return fLoader; | |
235 | } | |
236 | ||
237 | //_____________________________________________________________________________ | |
238 | void AliVZERO::SetTreeAddress() | |
239 | { | |
240 | // | |
241 | // Sets tree address for hits. | |
242 | // | |
243 | if (fLoader->TreeH() && (fHits == 0x0)) | |
244 | fHits = new TClonesArray("AliVZEROhit", 400); | |
245 | ||
246 | AliDetector::SetTreeAddress(); | |
247 | } | |
248 | ||
249 | //_____________________________________________________________________________ | |
250 | AliDigitizer* AliVZERO::CreateDigitizer(AliDigitizationInput* digInput) const | |
251 | { | |
252 | // | |
253 | // Creates a digitizer for VZERO | |
254 | // | |
255 | return new AliVZERODigitizer(digInput); | |
256 | } | |
257 | ||
258 | //_____________________________________________________________________________ | |
259 | void AliVZERO::Hits2Digits(){ | |
260 | // | |
261 | // Converts hits to digits | |
262 | // | |
263 | // Creates the VZERO digitizer | |
264 | AliVZERODigitizer* dig = new AliVZERODigitizer(this,AliVZERODigitizer::kHits2Digits); | |
265 | ||
266 | // Creates the digits | |
267 | dig->Digitize(""); | |
268 | ||
269 | // deletes the digitizer | |
270 | delete dig; | |
271 | } | |
272 | ||
273 | //_____________________________________________________________________________ | |
274 | void AliVZERO::Hits2SDigits(){ | |
275 | // | |
276 | // Converts hits to summable digits | |
277 | // | |
278 | // Creates the VZERO digitizer | |
279 | AliVZERODigitizer* dig = new AliVZERODigitizer(this,AliVZERODigitizer::kHits2SDigits); | |
280 | ||
281 | // Creates the sdigits | |
282 | dig->Digitize(""); | |
283 | ||
284 | // deletes the digitizer | |
285 | delete dig; | |
286 | } | |
287 | ||
288 | //_____________________________________________________________________________ | |
289 | void AliVZERO::Digits2Raw() | |
290 | { | |
291 | // | |
292 | // Converts digits of the current event to raw data | |
293 | // | |
294 | ||
295 | AliVZERO *fVZERO = (AliVZERO*)gAlice->GetDetector("VZERO"); | |
296 | fLoader->LoadDigits(); | |
297 | TTree* digits = fLoader->TreeD(); | |
298 | if (!digits) { | |
299 | Error("Digits2Raw", "no digits tree"); | |
300 | return; | |
301 | } | |
302 | TClonesArray * VZEROdigits = new TClonesArray("AliVZEROdigit",1000); | |
303 | fVZERO->SetTreeAddress(); | |
304 | digits->GetBranch("VZERODigit")->SetAddress(&VZEROdigits); | |
305 | ||
306 | const char *fileName = AliDAQ::DdlFileName("VZERO",0); | |
307 | AliVZEROBuffer* buffer = new AliVZEROBuffer(fileName); | |
308 | ||
309 | // Get Trigger information first | |
310 | // Read trigger inputs from trigger-detector object | |
311 | AliDataLoader * dataLoader = fLoader->GetDigitsDataLoader(); | |
312 | if( !dataLoader->IsFileOpen() ) | |
313 | dataLoader->OpenFile( "READ" ); | |
314 | AliTriggerDetector* trgdet = (AliTriggerDetector*)dataLoader->GetDirectory()->Get( "Trigger" ); | |
315 | UInt_t triggerInfo = 0; | |
316 | if(trgdet) { | |
317 | triggerInfo = trgdet->GetMask() & 0xffff; | |
318 | } | |
319 | else { | |
320 | AliError(Form("There is no trigger object for %s",fLoader->GetName())); | |
321 | } | |
322 | ||
323 | buffer->WriteTriggerInfo((UInt_t)triggerInfo); | |
324 | buffer->WriteTriggerScalers(); | |
325 | buffer->WriteBunchNumbers(); | |
326 | ||
327 | Int_t aBBflagsV0A = 0; | |
328 | Int_t aBBflagsV0C = 0; | |
329 | Int_t aBGflagsV0A = 0; | |
330 | Int_t aBGflagsV0C = 0; | |
331 | ||
332 | if (digits->GetUserInfo()->FindObject("BBflagsV0A")) { | |
333 | aBBflagsV0A = ((TParameter<int>*)digits->GetUserInfo()->FindObject("BBflagsV0A"))->GetVal(); | |
334 | } | |
335 | else | |
336 | AliWarning("V0A beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!"); | |
337 | ||
338 | if (digits->GetUserInfo()->FindObject("BBflagsV0C")) { | |
339 | aBBflagsV0C = ((TParameter<int>*)digits->GetUserInfo()->FindObject("BBflagsV0C"))->GetVal(); | |
340 | } | |
341 | else | |
342 | AliWarning("V0C beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!"); | |
343 | ||
344 | if (digits->GetUserInfo()->FindObject("BGflagsV0A")) { | |
345 | aBGflagsV0A = ((TParameter<int>*)digits->GetUserInfo()->FindObject("BGflagsV0A"))->GetVal(); | |
346 | } | |
347 | else | |
348 | AliWarning("V0A beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!"); | |
349 | ||
350 | if (digits->GetUserInfo()->FindObject("BGflagsV0C")) { | |
351 | aBGflagsV0C = ((TParameter<int>*)digits->GetUserInfo()->FindObject("BGflagsV0C"))->GetVal(); | |
352 | } | |
353 | else | |
354 | AliWarning("V0C beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!"); | |
355 | ||
356 | // Now retrieve the channel information: charge smaples + time and | |
357 | // dump it into ADC and Time arrays | |
358 | Int_t nEntries = Int_t(digits->GetEntries()); | |
359 | Short_t aADC[64][AliVZEROdigit::kNClocks]; | |
360 | Float_t aTime[64]; | |
361 | Float_t aWidth[64]; | |
362 | Bool_t aIntegrator[64]; | |
363 | Bool_t aBBflag[64]; | |
364 | Bool_t aBGflag[64]; | |
365 | ||
366 | for (Int_t i = 0; i < nEntries; i++) { | |
367 | fVZERO->ResetDigits(); | |
368 | digits->GetEvent(i); | |
369 | Int_t ndig = VZEROdigits->GetEntriesFast(); | |
370 | ||
371 | if(ndig == 0) continue; | |
372 | for(Int_t k=0; k<ndig; k++){ | |
373 | AliVZEROdigit* fVZERODigit = (AliVZEROdigit*) VZEROdigits->At(k); | |
374 | // Convert aliroot channel k into FEE channel iChannel before writing data | |
375 | Int_t iChannel = AliVZEROCalibData::GetBoardNumber(fVZERODigit->PMNumber()) * 8 + | |
376 | AliVZEROCalibData::GetFEEChannelNumber(fVZERODigit->PMNumber()); | |
377 | for(Int_t iClock = 0; iClock < AliVZEROdigit::kNClocks; ++iClock) aADC[iChannel][iClock] = fVZERODigit->ChargeADC(iClock); | |
378 | aTime[iChannel] = fVZERODigit->Time(); | |
379 | aWidth[iChannel] = fVZERODigit->Width(); | |
380 | aIntegrator[iChannel]= fVZERODigit->Integrator(); | |
381 | if(fVZERODigit->PMNumber() < 32) { | |
382 | aBBflag[iChannel] = (aBBflagsV0C >> fVZERODigit->PMNumber()) & 0x1; | |
383 | aBGflag[iChannel] = (aBGflagsV0C >> fVZERODigit->PMNumber()) & 0x1; | |
384 | } | |
385 | else { | |
386 | aBBflag[iChannel] = (aBBflagsV0A >> (fVZERODigit->PMNumber()-32)) & 0x1; | |
387 | aBGflag[iChannel] = (aBGflagsV0A >> (fVZERODigit->PMNumber()-32)) & 0x1; | |
388 | } | |
389 | AliDebug(1,Form("DDL: %s\tdigit number: %d\tPM number: %d\tADC: %d\tTime: %f", | |
390 | fileName,k,fVZERODigit->PMNumber(),aADC[iChannel][AliVZEROdigit::kNClocks/2],aTime[iChannel])); | |
391 | } | |
392 | } | |
393 | ||
394 | // Now fill raw data | |
395 | ||
396 | for (Int_t iCIU = 0; iCIU < 8; iCIU++) { | |
397 | ||
398 | // decoding of one Channel Interface Unit numbered iCIU - there are 8 channels per CIU (and 8 CIUs) : | |
399 | ||
400 | for(Int_t iChannel_Offset = iCIU*8; iChannel_Offset < (iCIU*8)+8; iChannel_Offset=iChannel_Offset+4) { | |
401 | for(Int_t iChannel = iChannel_Offset; iChannel < iChannel_Offset+4; iChannel++) { | |
402 | buffer->WriteChannel(iChannel, aADC[iChannel], aIntegrator[iChannel]); | |
403 | } | |
404 | buffer->WriteBeamFlags(&aBBflag[iChannel_Offset],&aBGflag[iChannel_Offset]); | |
405 | buffer->WriteMBInfo(); | |
406 | buffer->WriteMBFlags(); | |
407 | buffer->WriteBeamScalers(); | |
408 | } | |
409 | ||
410 | for(Int_t iChannel = iCIU*8 + 7; iChannel >= iCIU*8; iChannel--) { | |
411 | buffer->WriteTiming(aTime[iChannel], aWidth[iChannel]); | |
412 | } | |
413 | ||
414 | // End of decoding of one CIU card | |
415 | ||
416 | } // end of decoding the eight CIUs | |
417 | ||
418 | delete buffer; | |
419 | fLoader->UnloadDigits(); | |
420 | } | |
421 | ||
422 | //_____________________________________________________________________________ | |
423 | Bool_t AliVZERO::Raw2SDigits(AliRawReader* rawReader){ | |
424 | // Converts the VZERO raw data into digits | |
425 | // The method is used for merging simulated and | |
426 | // real data events | |
427 | TStopwatch timer; | |
428 | timer.Start(); | |
429 | ||
430 | if(!fLoader) { | |
431 | AliError("no VZERO loader found"); | |
432 | return kFALSE; | |
433 | } | |
434 | fLoader->LoadSDigits("UPDATE"); | |
435 | ||
436 | if (!fLoader->TreeS()) fLoader->MakeTree("S"); | |
437 | fLoader->MakeSDigitsContainer(); | |
438 | TTree* treeS = fLoader->TreeS(); | |
439 | ||
440 | TClonesArray *sdigits = new TClonesArray("AliVZEROSDigit", 64); | |
441 | treeS->Branch("VZEROSDigit", &sdigits); | |
442 | ||
443 | { | |
444 | rawReader->Reset(); | |
445 | AliVZERORawStream rawStream(rawReader); | |
446 | ||
447 | if (!rawStream.Next()) return kFALSE; // No VZERO data found | |
448 | ||
449 | GetCalibData(); | |
450 | ||
451 | Int_t nSDigits = 0; | |
452 | Float_t *charges = NULL; | |
453 | Int_t nbins = 0; | |
454 | for(Int_t iChannel=0; iChannel < 64; ++iChannel) { | |
455 | Int_t offlineCh = rawStream.GetOfflineChannel(iChannel); | |
456 | Short_t chargeADC[AliVZEROdigit::kNClocks]; | |
457 | for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) { | |
458 | chargeADC[iClock] = rawStream.GetPedestal(iChannel,iClock); | |
459 | } | |
460 | // Integrator flag | |
461 | Bool_t integrator = rawStream.GetIntegratorFlag(iChannel,AliVZEROdigit::kNClocks/2); | |
462 | // HPTDC data (leading time and width) | |
463 | Int_t board = AliVZEROCalibData::GetBoardNumber(offlineCh); | |
464 | Float_t time = rawStream.GetTime(iChannel)*fCalibData->GetTimeResolution(board); | |
465 | // Float_t width = rawStream.GetWidth(iChannel)*fCalibData->GetWidthResolution(board); | |
466 | Float_t adc = 0; | |
467 | ||
468 | // Pedestal retrieval and suppression | |
469 | Float_t maxadc = 0; | |
470 | Int_t imax = -1; | |
471 | Float_t adcPedSub[AliVZEROdigit::kNClocks]; | |
472 | Float_t integral = fSignalShape->Integral(0,200); | |
473 | for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) { | |
474 | Bool_t iIntegrator = (iClock%2 == 0) ? integrator : !integrator; | |
475 | Int_t k = offlineCh + 64*iIntegrator; | |
476 | adcPedSub[iClock] = (Float_t)chargeADC[iClock] - fCalibData->GetPedestal(k); | |
477 | if(adcPedSub[iClock] <= fRecoParam->GetNSigmaPed()*fCalibData->GetSigma(k)) { | |
478 | adcPedSub[iClock] = 0; | |
479 | continue; | |
480 | } | |
481 | if(iClock < fRecoParam->GetStartClock() || iClock > fRecoParam->GetEndClock()) continue; | |
482 | if(adcPedSub[iClock] > maxadc) { | |
483 | maxadc = adcPedSub[iClock]; | |
484 | imax = iClock; | |
485 | } | |
486 | } | |
487 | if (imax != -1) { | |
488 | Int_t start = imax - fRecoParam->GetNPreClocks(); | |
489 | if (start < 0) start = 0; | |
490 | Int_t end = imax + fRecoParam->GetNPostClocks(); | |
491 | if (end > 20) end = 20; | |
492 | for(Int_t iClock = start; iClock <= end; iClock++) { | |
493 | adc += adcPedSub[iClock]; | |
494 | } | |
495 | } | |
496 | Float_t correctedTime = CorrectLeadingTime(offlineCh,time,adc); | |
497 | ||
498 | if (!charges) { | |
499 | nbins = fNBins[offlineCh]; | |
500 | charges = new Float_t[nbins]; | |
501 | } | |
502 | else if (nbins != fNBins[offlineCh]) { | |
503 | delete [] charges; | |
504 | nbins = fNBins[offlineCh]; | |
505 | charges = new Float_t[nbins]; | |
506 | } | |
507 | memset(charges,0,nbins*sizeof(Float_t)); | |
508 | ||
509 | // Now lets produce SDigit | |
510 | if ((correctedTime > (AliVZEROReconstructor::kInvalidTime + 1e-6)) && | |
511 | (adc > 1e-6)) { | |
512 | for(Int_t iBin = 0; iBin < nbins; ++iBin) { | |
513 | Float_t t = fBinSize[offlineCh]*Float_t(iBin); | |
514 | if ((t < correctedTime) || | |
515 | (t > (correctedTime+200.))) continue; | |
516 | charges[iBin] = kChargePerADC*adc*(fSignalShape->Eval(t-correctedTime)*fBinSize[offlineCh]/integral); | |
517 | } | |
518 | } | |
519 | ||
520 | TClonesArray &sdigitsref = *sdigits; | |
521 | new (sdigitsref[nSDigits++]) AliVZEROSDigit(offlineCh,fNBins[offlineCh],charges); | |
522 | } | |
523 | if (charges) delete [] charges; | |
524 | } | |
525 | ||
526 | treeS->Fill(); | |
527 | fLoader->WriteSDigits("OVERWRITE"); | |
528 | fLoader->UnloadSDigits(); | |
529 | ||
530 | timer.Stop(); | |
531 | timer.Print(); | |
532 | return kTRUE; | |
533 | } | |
534 | ||
535 | //_____________________________________________________________________________ | |
536 | void AliVZERO::GetCalibData() | |
537 | { | |
538 | // Gets calibration object for VZERO set | |
539 | // Do nothing in case it is already loaded | |
540 | if (fCalibData) return; | |
541 | ||
542 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("VZERO/Calib/Data"); | |
543 | if (entry) fCalibData = (AliVZEROCalibData*) entry->GetObject(); | |
544 | if (!fCalibData) AliFatal("No calibration data from calibration database !"); | |
545 | ||
546 | AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeSlewing"); | |
547 | if (!entry2) AliFatal("VZERO time slewing function is not found in OCDB !"); | |
548 | fTimeSlewing = (TF1*)entry2->GetObject(); | |
549 | ||
550 | for(Int_t i = 0 ; i < 64; ++i) { | |
551 | Int_t board = AliVZEROCalibData::GetBoardNumber(i); | |
552 | fNBins[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0+ | |
553 | (Float_t)kMaxTDCWidth*fCalibData->GetWidthResolution(board))/ | |
554 | fCalibData->GetTimeResolution(board)); | |
555 | fBinSize[i] = fCalibData->GetTimeResolution(board); | |
556 | } | |
557 | ||
558 | fSignalShape = new TF1("VZEROSDigitSignalShape",this,&AliVZERO::SignalShape,0,200,6,"AliVZERO","SignalShape"); | |
559 | fSignalShape->SetParameters(0,1.57345e1,-4.25603e-1, | |
560 | 2.9,6.40982,3.69339e-01); | |
561 | ||
562 | fRecoParam = new AliVZERORecoParam; | |
563 | ||
564 | return; | |
565 | } | |
566 | ||
567 | Float_t AliVZERO::CorrectLeadingTime(Int_t i, Float_t time, Float_t adc) const | |
568 | { | |
569 | // Correct the leading time | |
570 | // for slewing effect and | |
571 | // misalignment of the channels | |
572 | if (time < 1e-6) return -1024; | |
573 | ||
574 | // In case of pathological signals | |
575 | if (adc < 1e-6) return time; | |
576 | ||
577 | // Slewing correction | |
578 | Float_t thr = fCalibData->GetCalibDiscriThr(i,kTRUE); | |
579 | time -= fTimeSlewing->Eval(adc/thr); | |
580 | ||
581 | return time; | |
582 | } | |
583 | ||
584 | double AliVZERO::SignalShape(double *x, double *par) | |
585 | { | |
586 | // this function simulates the signal | |
587 | // shape used in Raw->SDigits method | |
588 | ||
589 | Double_t xx = x[0]; | |
590 | if (xx <= par[0]) return 0; | |
591 | Double_t a = 1./TMath::Power((xx-par[0])/par[1],1./par[2]); | |
592 | if (xx <= par[3]) return a; | |
593 | Double_t b = 1./TMath::Power((xx-par[3])/par[4],1./par[5]); | |
594 | Double_t f = a*b/(a+b); | |
595 | AliDebug(100,Form("x=%f func=%f",xx,f)); | |
596 | return f; | |
597 | } |