- added the PHOS library to the autotools configuration
[u/mrichter/AliRoot.git] / EMCAL / AliEMCAL.cxx
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2012850d 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// Base Class for EMCAL description:
ffa6d63b 20// This class contains material definitions
21// for the EMCAL - It does not place the detector in Alice
2012850d 22//*-- Author: Yves Schutz (SUBATECH)
b13bbe81 23//
24//*-- Additional Contributions: Sahal Yacoob (LBNL/UCT)
25//
2012850d 26//////////////////////////////////////////////////////////////////////////////
27
2012850d 28// --- ROOT system ---
b13bbe81 29class TFile;
88cb7938 30#include <TFolder.h>
88cb7938 31#include <TTree.h>
32#include <TVirtualMC.h>
046ae904 33#include <TH1F.h>
34#include <TF1.h>
35#include <TRandom.h>
2d5d9e60 36#include <TGraph.h>
2012850d 37
05a92d59 38// --- Standard library ---
2012850d 39
05a92d59 40// --- AliRoot header files ---
2012850d 41#include "AliMagF.h"
88cb7938 42#include "AliEMCAL.h"
85a5290f 43#include "AliRun.h"
5dee926e 44#include "AliEMCALLoader.h"
85a5290f 45#include "AliEMCALSDigitizer.h"
46#include "AliEMCALDigitizer.h"
5dee926e 47#include "AliEMCALDigit.h"
f51151a0 48#include "AliAltroBuffer.h"
2d5d9e60 49#include "AliRawReader.h"
50#include "AliEMCALRawStream.h"
362c9d61 51#include "AliDAQ.h"
2012850d 52
53ClassImp(AliEMCAL)
56088960 54Double_t AliEMCAL::fgCapa = 1.; // 1pF
55Int_t AliEMCAL::fgOrder = 2 ;
56Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
57Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds
58Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
2d5d9e60 59// some digitization constants
2d5d9e60 60Int_t AliEMCAL::fgThreshold = 1;
61// 24*48=1152 towers per SM; divided up on 3 DDLs,
62// each DDL with 12FEC *32towers or 12*32*2 channels (high&low gain)
63Int_t AliEMCAL::fgChannelsPerDDL = 768; // 2*(1152/3 or 12*32)
56088960 64
2012850d 65//____________________________________________________________________________
66AliEMCAL::AliEMCAL():AliDetector()
67{
05a92d59 68 // Default ctor
046ae904 69 fName = "EMCAL" ;
0a4cb131 70 Init();
71
2012850d 72}
05a92d59 73
2012850d 74//____________________________________________________________________________
05a92d59 75AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
76{
77 // ctor : title is used to identify the layout
0a4cb131 78 Init();
79
80}
81
82//____________________________________________________________________________
83AliEMCAL::AliEMCAL(const AliEMCAL& emcal) : AliDetector(emcal)
84{
85 //copy ctor
86 Init();
046ae904 87
2012850d 88}
05a92d59 89
2012850d 90//____________________________________________________________________________
05a92d59 91AliEMCAL::~AliEMCAL()
92{
14ce0a6e 93 //dtor
2012850d 94}
95
96//____________________________________________________________________________
0a4cb131 97void AliEMCAL::Init(void)
98{
99 //initialize EMCAL values
100 fBirkC0 = 1;
101 fBirkC1 = 0.013/1.032;
102 fBirkC2 = 9.6e-6/(1.032 * 1.032);
103
104 fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
105 fHighGain = 6.64 ;
106 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
107 fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data
108}
109
110//____________________________________________________________________________
5dee926e 111void AliEMCAL::Copy(AliEMCAL & emcal) const
8367ce9a 112{
14ce0a6e 113 //copy
114
8367ce9a 115 TObject::Copy(emcal) ;
56088960 116 emcal.fHighCharge = fHighCharge ;
117 emcal.fHighGain = fHighGain ;
118 emcal.fHighLowGainFactor = fHighLowGainFactor ;
119 emcal.fLowGainOffset = fLowGainOffset;
8367ce9a 120}
121
122//____________________________________________________________________________
123AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
124{
14ce0a6e 125 //create and return the digitizer
8367ce9a 126 return new AliEMCALDigitizer(manager);
127}
128
129//____________________________________________________________________________
05a92d59 130void AliEMCAL::CreateMaterials()
131{
2012850d 132 // Definitions of materials to build EMCAL and associated tracking media.
133 // media number in idtmed are 1599 to 1698.
134
996cf306 135 // --- Air ---
136 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
137 Float_t zAir[4]={6.,7.,8.,18.};
138 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
139 Float_t dAir = 1.20479E-3;
140 AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ;
b13bbe81 141
2012850d 142 // --- Lead ---
143 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
144
b13bbe81 145
146 // --- The polysterene scintillator (CH) ---
147 Float_t aP[2] = {12.011, 1.00794} ;
148 Float_t zP[2] = {6.0, 1.0} ;
149 Float_t wP[2] = {1.0, 1.0} ;
150 Float_t dP = 1.032 ;
151
152 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
153
154 // --- Aluminium ---
155 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
156 // --- Absorption length is ignored ^
157
1963b290 158 // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition
159 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
160 Float_t zsteel[4] = { 26.,24.,28.,14. };
161 Float_t wsteel[4] = { .715,.18,.1,.005 };
162 AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
163
2012850d 164 // DEFINITION OF THE TRACKING MEDIA
165
166 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
167 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
168 Int_t isxfld = gAlice->Field()->Integ() ;
169 Float_t sxmgmx = gAlice->Field()->Max() ;
170
996cf306 171 // Air -> idtmed[1599]
905263da 172 AliMedium(0, "Air$", 0, 0,
996cf306 173 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
2012850d 174
a63e0d5e 175 // The Lead -> idtmed[1600]
2012850d 176
905263da 177 AliMedium(1, "Lead$", 1, 0,
2012850d 178 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
179
b13bbe81 180 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
905263da 181 AliMedium(2, "Scintillator$", 2, 1,
61e0abb5 182 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
b13bbe81 183
a63e0d5e 184 // Various Aluminium parts made of Al -> idtmed[1602]
905263da 185 AliMedium(3, "Al$", 3, 0,
b13bbe81 186 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
187
1963b290 188 // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603]
189 AliMedium(4, "S steel$", 4, 0,
190 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
2012850d 191
b13bbe81 192// --- Set decent energy thresholds for gamma and electron tracking
2012850d 193
194 // Tracking threshold for photons and electrons in Lead
905263da 195 Float_t cutgam=10.e-5; // 100 kev;
196 Float_t cutele=10.e-5; // 100 kev;
197 TString ntmp(GetTitle());
198 ntmp.ToUpper();
199 if(ntmp.Contains("10KEV")) {
200 cutele = cutgam = 1.e-5;
201 } else if(ntmp.Contains("50KEV")) {
202 cutele = cutgam = 5.e-5;
203 } else if(ntmp.Contains("100KEV")) {
204 cutele = cutgam = 1.e-4;
205 } else if(ntmp.Contains("200KEV")) {
206 cutele = cutgam = 2.e-4;
207 } else if(ntmp.Contains("500KEV")) {
208 cutele = cutgam = 5.e-4;
209 }
2012850d 210
905263da 211 gMC->Gstpar(idtmed[1600],"CUTGAM", cutgam);
212 gMC->Gstpar(idtmed[1600],"CUTELE", cutele); // 1MEV -> 0.1MEV; 15-aug-05
213 gMC->Gstpar(idtmed[1600],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
214 gMC->Gstpar(idtmed[1600],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
2012850d 215 // --- Generate explicitly delta rays in Lead ---
216 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
217 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
905263da 218 gMC->Gstpar(idtmed[1600], "DCUTE", cutele) ;
219 gMC->Gstpar(idtmed[1600], "DCUTM", cutele) ;
05a92d59 220
a63e0d5e 221// --- in aluminium parts ---
905263da 222 gMC->Gstpar(idtmed[1602],"CUTGAM", cutgam) ;
223 gMC->Gstpar(idtmed[1602],"CUTELE", cutele) ;
224 gMC->Gstpar(idtmed[1602],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
225 gMC->Gstpar(idtmed[1602],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
b13bbe81 226 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
227 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
905263da 228 gMC->Gstpar(idtmed[1602], "DCUTE", cutele) ;
229 gMC->Gstpar(idtmed[1602], "DCUTM", cutele) ;
b13bbe81 230
ffa6d63b 231// --- and finally thresholds for photons and electrons in the scintillator ---
905263da 232 gMC->Gstpar(idtmed[1601],"CUTGAM", cutgam) ;
233 gMC->Gstpar(idtmed[1601],"CUTELE", cutele) ;// 1MEV -> 0.1MEV; 15-aug-05
234 gMC->Gstpar(idtmed[1601],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
235 gMC->Gstpar(idtmed[1601],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
236 gMC->Gstpar(idtmed[1601], "LOSS",3.) ; // generate delta rays
237 gMC->Gstpar(idtmed[1601], "DRAY",1.) ;
238 gMC->Gstpar(idtmed[1601], "DCUTE", cutele) ;
239 gMC->Gstpar(idtmed[1601], "DCUTM", cutele) ;
240
241 // S steel -
242 gMC->Gstpar(idtmed[1603],"CUTGAM", cutgam);
243 gMC->Gstpar(idtmed[1603],"CUTELE", cutele);
244 gMC->Gstpar(idtmed[1603],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
245 gMC->Gstpar(idtmed[1603],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
246 // --- Generate explicitly delta rays
1963b290 247 gMC->Gstpar(idtmed[1603], "LOSS",3.);
248 gMC->Gstpar(idtmed[1603], "DRAY",1.);
905263da 249 gMC->Gstpar(idtmed[1603], "DCUTE", cutele) ;
250 gMC->Gstpar(idtmed[1603], "DCUTM", cutele) ;
1963b290 251
ab37d09c 252 //set constants for Birk's Law implentation
253 fBirkC0 = 1;
254 fBirkC1 = 0.013/dP;
255 fBirkC2 = 9.6e-6/(dP * dP);
256
2012850d 257}
f6019cda 258
8367ce9a 259//____________________________________________________________________________
f51151a0 260void AliEMCAL::Digits2Raw()
261{
56088960 262 // convert digits of the current event to raw data
263 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
f51151a0 264
265 // get the digits
00d03c2f 266 loader->LoadDigits("EMCAL");
811570e1 267 loader->GetEvent();
56088960 268 TClonesArray* digits = loader->Digits() ;
f51151a0 269
270 if (!digits) {
271 Error("Digits2Raw", "no digits found !");
272 return;
273 }
274
56088960 275 // get the digitizer
276 loader->LoadDigitizer();
277 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
278
f51151a0 279
f51151a0 280 AliAltroBuffer* buffer = NULL;
281 Int_t prevDDL = -1;
14ce0a6e 282 Int_t adcValuesLow[fgkTimeBins];
283 Int_t adcValuesHigh[fgkTimeBins];
56088960 284
f51151a0 285 // loop over digits (assume ordered digits)
286 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
56088960 287 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
2d5d9e60 288 if (digit->GetAmp() < fgThreshold)
f51151a0 289 continue;
2d5d9e60 290 Int_t iDDL = digit->GetId() / fgChannelsPerDDL ;
291 // for each DDL id is numbered from 1 to fgChannelsperDDL -1
292 Int_t idDDL = digit->GetId() - iDDL * ( fgChannelsPerDDL - 1 ) ;
f51151a0 293 // new DDL
294 if (iDDL != prevDDL) {
295 // write real header and close previous file
296 if (buffer) {
297 buffer->Flush();
298 buffer->WriteDataHeader(kFALSE, kFALSE);
299 delete buffer;
300 }
301
302 // open new file and write dummy header
362c9d61 303 TString fileName(AliDAQ::DdlFileName("EMCAL",iDDL));
4c846604 304 buffer = new AliAltroBuffer(fileName.Data());
f51151a0 305 buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
306
307 prevDDL = iDDL;
308 }
309
310 // out of time range signal (?)
56088960 311 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
f51151a0 312 buffer->FillBuffer(digit->GetAmp());
56088960 313 buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
f51151a0 314 buffer->FillBuffer(3); // bunch length
315 buffer->WriteTrailer(3, idDDL, 0, 0); // trailer
56088960 316
317 // calculate the time response function
f51151a0 318 } else {
56088960 319 Double_t energy = 0 ;
320 energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ;
321
322 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
323
324 if (lowgain)
325 buffer->WriteChannel(iDDL, 0, fLowGainOffset,
2d5d9e60 326 GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
56088960 327 else
328 buffer->WriteChannel(iDDL, 0, 0,
2d5d9e60 329 GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
56088960 330
f51151a0 331 }
332 }
56088960 333
f51151a0 334 // write real header and close last file
335 if (buffer) {
336 buffer->Flush();
337 buffer->WriteDataHeader(kFALSE, kFALSE);
338 delete buffer;
339 }
56088960 340
341 loader->UnloadDigits();
f51151a0 342}
343
344//____________________________________________________________________________
2d5d9e60 345void AliEMCAL::Raw2Digits(AliRawReader* reader)
346{
4800667c 347 // convert raw data of the current event to digits
ddca522a 348 GetGeometry();
2d5d9e60 349 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
350
351 // get the digits
352 loader->CleanDigits(); // start from scratch
00d03c2f 353 loader->LoadDigits("EMCAL");
2d5d9e60 354 TClonesArray* digits = loader->Digits() ;
355 digits->Clear(); // yes, this is perhaps somewhat paranoid.. [clearing an extra time]
356
357 if (!digits) {
358 Error("Raw2Digits", "no digits found !");
359 return;
360 }
361 if (!reader) {
362 Error("Raw2Digits", "no raw reader found !");
363 return;
364 }
365
366 // and get the digitizer too
367 loader->LoadDigitizer();
368 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
369
370 // Use AliAltroRawStream to read the ALTRO format. No need to
371 // reinvent the wheel :-)
372 AliEMCALRawStream in(reader);
362c9d61 373 // Select EMCAL DDL's;
374 reader->Select("EMCAL");
2d5d9e60 375
376 // reading is from previously existing AliEMCALGetter.cxx
377 // ReadRaw method
378 Bool_t first = kTRUE ;
379
380 TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
381 signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero");
382
383 Int_t id = -1;
384 Bool_t lowGainFlag = kFALSE ;
385
386 Int_t idigit = 0 ;
387 Int_t amp = 0 ;
388 Double_t time = 0. ;
389 Double_t energy = 0. ;
390
391 TGraph * gLowGain = new TGraph(GetRawFormatTimeBins()) ;
392 TGraph * gHighGain= new TGraph(GetRawFormatTimeBins()) ;
393
394 while ( in.Next() ) { // EMCAL entries loop
395 if ( in.IsNewId() ) {
396 if (!first) {
397 FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ;
398
399 if (time == 0. && energy == 0.) {
400 amp = 0 ;
401 }
402 else {
403 amp = static_cast<Int_t>( (energy - digitizer->GetECApedestal()) / digitizer->GetECAchannel() + 0.5 ) ;
404 }
405
406 if (amp > 0) {
407 new((*digits)[idigit]) AliEMCALDigit( -1, -1, id, amp, time) ;
408 idigit++ ;
409 }
410 Int_t index ;
411 for (index = 0; index < GetRawFormatTimeBins(); index++) {
412 gLowGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
413 gHighGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
414 }
415 } // not first
416 first = kFALSE ;
417 id = in.GetId() ;
418 if (in.GetModule() == GetRawFormatLowGainOffset() ) {
419 lowGainFlag = kTRUE ;
420 }
421 else {
422 lowGainFlag = kFALSE ;
423 }
424 } // new Id?
425 if (lowGainFlag) {
426 gLowGain->SetPoint(in.GetTime(),
427 in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
428 in.GetSignal()) ;
429 }
430 else {
431 gHighGain->SetPoint(in.GetTime(),
432 in.GetTime() * GetRawFormatTimeMax() / GetRawFormatTimeBins(),
433 in.GetSignal() ) ;
434 }
435 } // EMCAL entries loop
436 digits->Sort() ;
437
438 delete signalF ;
439 delete gLowGain;
440 delete gHighGain ;
441
442 return ;
443}
444
445//____________________________________________________________________________
446void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time)
447{
448 // Fits the raw signal time distribution; from AliEMCALGetter
449
450 const Int_t kNoiseThreshold = 0 ;
451 Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
452 Double_t signal = 0., signalmax = 0. ;
453 energy = time = 0. ;
454
455 if (lowGainFlag) {
456 timezero1 = timezero2 = signalmax = timemax = 0. ;
457 signalF->FixParameter(0, GetRawFormatLowCharge()) ;
458 signalF->FixParameter(1, GetRawFormatLowGain()) ;
459 Int_t index ;
460 for (index = 0; index < GetRawFormatTimeBins(); index++) {
461 gLowGain->GetPoint(index, time, signal) ;
462 if (signal > kNoiseThreshold && timezero1 == 0.)
463 timezero1 = time ;
464 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
465 timezero2 = time ;
466 if (signal > signalmax) {
467 signalmax = signal ;
468 timemax = time ;
469 }
470 }
471 signalmax /= RawResponseFunctionMax(GetRawFormatLowCharge(),
472 GetRawFormatLowGain()) ;
473 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
474 signalF->SetParameter(2, signalmax) ;
475 signalF->SetParameter(3, timezero1) ;
476 gLowGain->Fit(signalF, "QRON", "", 0., timezero2); //, "QRON") ;
477 energy = signalF->GetParameter(2) ;
478 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
479 }
480 } else {
481 timezero1 = timezero2 = signalmax = timemax = 0. ;
482 signalF->FixParameter(0, GetRawFormatHighCharge()) ;
483 signalF->FixParameter(1, GetRawFormatHighGain()) ;
484 Int_t index ;
485 for (index = 0; index < GetRawFormatTimeBins(); index++) {
486 gHighGain->GetPoint(index, time, signal) ;
487 if (signal > kNoiseThreshold && timezero1 == 0.)
488 timezero1 = time ;
489 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
490 timezero2 = time ;
491 if (signal > signalmax) {
492 signalmax = signal ;
493 timemax = time ;
494 }
495 }
496 signalmax /= RawResponseFunctionMax(GetRawFormatHighCharge(),
497 GetRawFormatHighGain()) ;;
498 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
499 signalF->SetParameter(2, signalmax) ;
500 signalF->SetParameter(3, timezero1) ;
501 gHighGain->Fit(signalF, "QRON", "", 0., timezero2) ;
502 energy = signalF->GetParameter(2) ;
503 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
504 }
505 }
506
507 return;
508}
509
510//____________________________________________________________________________
8367ce9a 511void AliEMCAL::Hits2SDigits()
512{
513// create summable digits
514
ddca522a 515 GetGeometry();
4d33c797 516 AliEMCALSDigitizer emcalDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
517 emcalDigitizer.SetEventRange(0, -1) ; // do all the events
518 emcalDigitizer.ExecuteTask() ;
da480a28 519}
520
521//____________________________________________________________________________
5dee926e 522
8367ce9a 523AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
524{
525//different behaviour than standard (singleton getter)
526// --> to be discussed and made eventually coherent
527 fLoader = new AliEMCALLoader(GetName(),topfoldername);
528 return fLoader;
529}
530
046ae904 531//__________________________________________________________________
532Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
533{
534 // Shape of the electronics raw reponse:
56088960 535 // It is a semi-gaussian, 2nd order Gamma function of the general form
536 // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
537 // tp : peaking time par[0]
538 // n : order of the function
539 // C : integrating capacitor in the preamplifier
540 // A : open loop gain of the preamplifier
541 // Q : the total APD charge to be measured Q = C * energy
046ae904 542
56088960 543 Double_t signal ;
544 Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
046ae904 545
56088960 546 if (xx < 0 || xx > fgTimeMax)
547 signal = 0. ;
548 else {
549 Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
550 signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
551 }
552 return signal ;
046ae904 553}
554
555//__________________________________________________________________
56088960 556Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain)
557{
14ce0a6e 558 //compute the maximum of the raw response function and return
56088960 559 return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
560 / ( fgCapa * TMath::Exp(fgOrder) ) );
561
562}
563//__________________________________________________________________
564Bool_t AliEMCAL::RawSampledResponse(
565const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
046ae904 566{
567 // for a start time dtime and an amplitude damp given by digit,
56088960 568 // calculates the raw sampled response AliEMCAL::RawResponseFunction
046ae904 569
570 const Int_t kRawSignalOverflow = 0x3FF ;
56088960 571 Bool_t lowGain = kFALSE ;
572
573 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
574
575 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
576 signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
577 signalF.SetParameter(1, GetRawFormatHighGain() ) ;
578 signalF.SetParameter(2, damp) ;
579 signalF.SetParameter(3, dtime) ;
580 Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
581 Double_t signal = signalF.Eval(time) ;
582 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
583 signal = kRawSignalOverflow ;
584 lowGain = kTRUE ;
585 }
586 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
587
588 signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
589 signalF.SetParameter(1, GetRawFormatLowGain() ) ;
590 signal = signalF.Eval(time) ;
591 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
592 signal = kRawSignalOverflow ;
593 adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
594
046ae904 595 }
56088960 596 return lowGain ;
046ae904 597}