First working implementation of the online cell energy/time evaluation. The
[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/* $Id$ */
4884333f 17/* History of cvs commits:
18 *
19 * $Log$
2bb3725c 20 * Revision 1.47 2006/12/05 17:12:03 gustavo
21 * Updated AliEMCAL::Digits2Raw, reads first provisional RCU mapping files to make Raw data with new AliCaloAltroMapping and AliCaloRawStream
22 *
4884333f 23 *
24 */
2012850d 25//_________________________________________________________________________
26// Base Class for EMCAL description:
ffa6d63b 27// This class contains material definitions
28// for the EMCAL - It does not place the detector in Alice
2012850d 29//*-- Author: Yves Schutz (SUBATECH)
b13bbe81 30//
31//*-- Additional Contributions: Sahal Yacoob (LBNL/UCT)
32//
2012850d 33//////////////////////////////////////////////////////////////////////////////
34
2012850d 35// --- ROOT system ---
b13bbe81 36class TFile;
88cb7938 37#include <TFolder.h>
88cb7938 38#include <TTree.h>
39#include <TVirtualMC.h>
046ae904 40#include <TH1F.h>
41#include <TF1.h>
42#include <TRandom.h>
2d5d9e60 43#include <TGraph.h>
2012850d 44
05a92d59 45// --- Standard library ---
2012850d 46
05a92d59 47// --- AliRoot header files ---
2012850d 48#include "AliMagF.h"
88cb7938 49#include "AliEMCAL.h"
85a5290f 50#include "AliRun.h"
5dee926e 51#include "AliEMCALLoader.h"
85a5290f 52#include "AliEMCALSDigitizer.h"
53#include "AliEMCALDigitizer.h"
5dee926e 54#include "AliEMCALDigit.h"
4884333f 55//#include "AliAltroMapping.h"
56#include "AliCaloAltroMapping.h"
f51151a0 57#include "AliAltroBuffer.h"
2d5d9e60 58#include "AliRawReader.h"
4884333f 59#include "AliCaloRawStream.h"
362c9d61 60#include "AliDAQ.h"
2012850d 61
62ClassImp(AliEMCAL)
56088960 63Double_t AliEMCAL::fgCapa = 1.; // 1pF
64Int_t AliEMCAL::fgOrder = 2 ;
65Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
66Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds
67Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
2d5d9e60 68// some digitization constants
2d5d9e60 69Int_t AliEMCAL::fgThreshold = 1;
4884333f 70Int_t AliEMCAL::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
71
2012850d 72//____________________________________________________________________________
18a21c7c 73AliEMCAL::AliEMCAL()
74 : AliDetector(),
75 fBirkC0(0),
76 fBirkC1(0.),
77 fBirkC2(0.),
78 fHighCharge(0.),
79 fHighGain(0.),
80 fHighLowGainFactor(0.),
81 fLowGainOffset(0)
2012850d 82{
05a92d59 83 // Default ctor
046ae904 84 fName = "EMCAL" ;
0a4cb131 85 Init();
86
2012850d 87}
05a92d59 88
2012850d 89//____________________________________________________________________________
18a21c7c 90AliEMCAL::AliEMCAL(const char* name, const char* title)
91 : AliDetector(name,title),
92 fBirkC0(0),
93 fBirkC1(0.),
94 fBirkC2(0.),
95 fHighCharge(0.),
96 fHighGain(0.),
97 fHighLowGainFactor(0.),
98 fLowGainOffset(0)
05a92d59 99{
100 // ctor : title is used to identify the layout
0a4cb131 101 Init();
102
103}
104
105//____________________________________________________________________________
05a92d59 106AliEMCAL::~AliEMCAL()
107{
14ce0a6e 108 //dtor
2012850d 109}
110
111//____________________________________________________________________________
0a4cb131 112void AliEMCAL::Init(void)
113{
114 //initialize EMCAL values
115 fBirkC0 = 1;
116 fBirkC1 = 0.013/1.032;
117 fBirkC2 = 9.6e-6/(1.032 * 1.032);
118
119 fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
120 fHighGain = 6.64 ;
121 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
122 fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data
123}
124
125//____________________________________________________________________________
8367ce9a 126AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
127{
14ce0a6e 128 //create and return the digitizer
8367ce9a 129 return new AliEMCALDigitizer(manager);
130}
131
132//____________________________________________________________________________
05a92d59 133void AliEMCAL::CreateMaterials()
134{
2012850d 135 // Definitions of materials to build EMCAL and associated tracking media.
136 // media number in idtmed are 1599 to 1698.
137
996cf306 138 // --- Air ---
139 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
140 Float_t zAir[4]={6.,7.,8.,18.};
141 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
142 Float_t dAir = 1.20479E-3;
143 AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ;
b13bbe81 144
2012850d 145 // --- Lead ---
146 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
147
b13bbe81 148
149 // --- The polysterene scintillator (CH) ---
150 Float_t aP[2] = {12.011, 1.00794} ;
151 Float_t zP[2] = {6.0, 1.0} ;
152 Float_t wP[2] = {1.0, 1.0} ;
153 Float_t dP = 1.032 ;
154
155 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
156
157 // --- Aluminium ---
158 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
159 // --- Absorption length is ignored ^
160
1963b290 161 // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition
162 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
163 Float_t zsteel[4] = { 26.,24.,28.,14. };
164 Float_t wsteel[4] = { .715,.18,.1,.005 };
165 AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
166
2012850d 167 // DEFINITION OF THE TRACKING MEDIA
168
169 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
170 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
171 Int_t isxfld = gAlice->Field()->Integ() ;
172 Float_t sxmgmx = gAlice->Field()->Max() ;
173
996cf306 174 // Air -> idtmed[1599]
905263da 175 AliMedium(0, "Air$", 0, 0,
996cf306 176 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
2012850d 177
a63e0d5e 178 // The Lead -> idtmed[1600]
2012850d 179
905263da 180 AliMedium(1, "Lead$", 1, 0,
2012850d 181 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
182
b13bbe81 183 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
905263da 184 AliMedium(2, "Scintillator$", 2, 1,
61e0abb5 185 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
b13bbe81 186
a63e0d5e 187 // Various Aluminium parts made of Al -> idtmed[1602]
905263da 188 AliMedium(3, "Al$", 3, 0,
b13bbe81 189 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
190
1963b290 191 // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603]
192 AliMedium(4, "S steel$", 4, 0,
193 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
2012850d 194
b13bbe81 195// --- Set decent energy thresholds for gamma and electron tracking
2012850d 196
197 // Tracking threshold for photons and electrons in Lead
905263da 198 Float_t cutgam=10.e-5; // 100 kev;
199 Float_t cutele=10.e-5; // 100 kev;
200 TString ntmp(GetTitle());
201 ntmp.ToUpper();
202 if(ntmp.Contains("10KEV")) {
203 cutele = cutgam = 1.e-5;
204 } else if(ntmp.Contains("50KEV")) {
205 cutele = cutgam = 5.e-5;
206 } else if(ntmp.Contains("100KEV")) {
207 cutele = cutgam = 1.e-4;
208 } else if(ntmp.Contains("200KEV")) {
209 cutele = cutgam = 2.e-4;
210 } else if(ntmp.Contains("500KEV")) {
211 cutele = cutgam = 5.e-4;
212 }
2012850d 213
905263da 214 gMC->Gstpar(idtmed[1600],"CUTGAM", cutgam);
215 gMC->Gstpar(idtmed[1600],"CUTELE", cutele); // 1MEV -> 0.1MEV; 15-aug-05
216 gMC->Gstpar(idtmed[1600],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
217 gMC->Gstpar(idtmed[1600],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
2012850d 218 // --- Generate explicitly delta rays in Lead ---
219 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
220 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
905263da 221 gMC->Gstpar(idtmed[1600], "DCUTE", cutele) ;
222 gMC->Gstpar(idtmed[1600], "DCUTM", cutele) ;
05a92d59 223
a63e0d5e 224// --- in aluminium parts ---
905263da 225 gMC->Gstpar(idtmed[1602],"CUTGAM", cutgam) ;
226 gMC->Gstpar(idtmed[1602],"CUTELE", cutele) ;
227 gMC->Gstpar(idtmed[1602],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
228 gMC->Gstpar(idtmed[1602],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
b13bbe81 229 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
230 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
905263da 231 gMC->Gstpar(idtmed[1602], "DCUTE", cutele) ;
232 gMC->Gstpar(idtmed[1602], "DCUTM", cutele) ;
b13bbe81 233
ffa6d63b 234// --- and finally thresholds for photons and electrons in the scintillator ---
905263da 235 gMC->Gstpar(idtmed[1601],"CUTGAM", cutgam) ;
236 gMC->Gstpar(idtmed[1601],"CUTELE", cutele) ;// 1MEV -> 0.1MEV; 15-aug-05
237 gMC->Gstpar(idtmed[1601],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
238 gMC->Gstpar(idtmed[1601],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
239 gMC->Gstpar(idtmed[1601], "LOSS",3.) ; // generate delta rays
240 gMC->Gstpar(idtmed[1601], "DRAY",1.) ;
241 gMC->Gstpar(idtmed[1601], "DCUTE", cutele) ;
242 gMC->Gstpar(idtmed[1601], "DCUTM", cutele) ;
243
244 // S steel -
245 gMC->Gstpar(idtmed[1603],"CUTGAM", cutgam);
246 gMC->Gstpar(idtmed[1603],"CUTELE", cutele);
247 gMC->Gstpar(idtmed[1603],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
248 gMC->Gstpar(idtmed[1603],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
249 // --- Generate explicitly delta rays
1963b290 250 gMC->Gstpar(idtmed[1603], "LOSS",3.);
251 gMC->Gstpar(idtmed[1603], "DRAY",1.);
905263da 252 gMC->Gstpar(idtmed[1603], "DCUTE", cutele) ;
253 gMC->Gstpar(idtmed[1603], "DCUTM", cutele) ;
1963b290 254
ab37d09c 255 //set constants for Birk's Law implentation
256 fBirkC0 = 1;
257 fBirkC1 = 0.013/dP;
258 fBirkC2 = 9.6e-6/(dP * dP);
259
2012850d 260}
4884333f 261 //____________________________________________________________________________
f51151a0 262void AliEMCAL::Digits2Raw()
263{
56088960 264 // convert digits of the current event to raw data
4884333f 265
56088960 266 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
4884333f 267
f51151a0 268 // get the digits
00d03c2f 269 loader->LoadDigits("EMCAL");
811570e1 270 loader->GetEvent();
56088960 271 TClonesArray* digits = loader->Digits() ;
4884333f 272
f51151a0 273 if (!digits) {
274 Error("Digits2Raw", "no digits found !");
275 return;
276 }
4884333f 277
56088960 278 // get the digitizer
279 loader->LoadDigitizer();
280 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
281
4884333f 282 // get the geometry
283 AliEMCALGeometry* geom = GetGeometry();
284 if (!geom) {
285 AliError(Form("No geometry found !"));
286 return;
287 }
288
f51151a0 289 AliAltroBuffer* buffer = NULL;
290 Int_t prevDDL = -1;
14ce0a6e 291 Int_t adcValuesLow[fgkTimeBins];
292 Int_t adcValuesHigh[fgkTimeBins];
4884333f 293
294 //Load Mapping RCU files once
295 TString path = gSystem->Getenv("ALICE_ROOT");
296 path += "/EMCAL/mapping/RCU";
297 TString path0 = path+"0.data";//This file will change in future
298 TString path1 = path+"1.data";//This file will change in future
299 AliAltroMapping * mapping[2] ; // For the moment only 2
300 mapping[0] = new AliCaloAltroMapping(path0.Data());
301 mapping[1] = new AliCaloAltroMapping(path1.Data());
302
f51151a0 303 // loop over digits (assume ordered digits)
304 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
56088960 305 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
2d5d9e60 306 if (digit->GetAmp() < fgThreshold)
f51151a0 307 continue;
4884333f 308
309 //get cell indeces
310 Int_t nSM = 0;
311 Int_t nIphi = 0;
312 Int_t nIeta = 0;
313 Int_t iphi = 0;
314 Int_t ieta = 0;
2bb3725c 315 Int_t nModule = 0;
316 geom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
317 geom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
4884333f 318
319 //Check which is the RCU of the cell.
320 Int_t iRCU = -111;
321 //RCU0
322 if (0<=iphi&&iphi<8) iRCU=0; // first cable row
323 else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
324 //second cable row
325 //RCU1
326 else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
327 //second cable row
328 else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
329
330 //Which DDL?
331 Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
332
f51151a0 333 // new DDL
334 if (iDDL != prevDDL) {
335 // write real header and close previous file
4884333f 336
f51151a0 337 if (buffer) {
338 buffer->Flush();
339 buffer->WriteDataHeader(kFALSE, kFALSE);
340 delete buffer;
341 }
4884333f 342
f51151a0 343 // open new file and write dummy header
4884333f 344 TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
345 buffer = new AliAltroBuffer(fileName.Data(),mapping[iRCU]);
f51151a0 346 buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
f51151a0 347 prevDDL = iDDL;
348 }
4884333f 349
f51151a0 350 // out of time range signal (?)
56088960 351 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
4884333f 352 AliInfo("Signal is out of time range.\n");
353 buffer->FillBuffer((Int_t)digit->GetAmp());
56088960 354 buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
4884333f 355 buffer->FillBuffer(3); // bunch length
356 buffer->WriteTrailer(3, ieta, iphi, nSM); // trailer
56088960 357 // calculate the time response function
f51151a0 358 } else {
4884333f 359
360 Double_t energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ;
56088960 361
362 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
363
364 if (lowgain)
4884333f 365 buffer->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
56088960 366 else
4884333f 367 buffer->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
368
f51151a0 369 }
370 }
56088960 371
f51151a0 372 // write real header and close last file
373 if (buffer) {
374 buffer->Flush();
375 buffer->WriteDataHeader(kFALSE, kFALSE);
376 delete buffer;
377 }
4884333f 378 mapping[0]->Delete();
379 mapping[1]->Delete();
56088960 380 loader->UnloadDigits();
f51151a0 381}
382
383//____________________________________________________________________________
2d5d9e60 384void AliEMCAL::Raw2Digits(AliRawReader* reader)
385{
4800667c 386 // convert raw data of the current event to digits
4884333f 387 AliEMCALGeometry * geom = GetGeometry();
2d5d9e60 388 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
389
390 // get the digits
391 loader->CleanDigits(); // start from scratch
00d03c2f 392 loader->LoadDigits("EMCAL");
2d5d9e60 393 TClonesArray* digits = loader->Digits() ;
394 digits->Clear(); // yes, this is perhaps somewhat paranoid.. [clearing an extra time]
395
396 if (!digits) {
397 Error("Raw2Digits", "no digits found !");
398 return;
399 }
400 if (!reader) {
401 Error("Raw2Digits", "no raw reader found !");
402 return;
403 }
404
405 // and get the digitizer too
406 loader->LoadDigitizer();
407 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
408
409 // Use AliAltroRawStream to read the ALTRO format. No need to
410 // reinvent the wheel :-)
4884333f 411 AliCaloRawStream in(reader,"EMCAL");
362c9d61 412 // Select EMCAL DDL's;
413 reader->Select("EMCAL");
2d5d9e60 414
415 // reading is from previously existing AliEMCALGetter.cxx
416 // ReadRaw method
417 Bool_t first = kTRUE ;
418
419 TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
420 signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero");
421
2d5d9e60 422 Bool_t lowGainFlag = kFALSE ;
4884333f 423 Int_t id = -1;
2d5d9e60 424 Int_t idigit = 0 ;
425 Int_t amp = 0 ;
426 Double_t time = 0. ;
427 Double_t energy = 0. ;
428
429 TGraph * gLowGain = new TGraph(GetRawFormatTimeBins()) ;
430 TGraph * gHighGain= new TGraph(GetRawFormatTimeBins()) ;
431
432 while ( in.Next() ) { // EMCAL entries loop
4884333f 433 if ( in.IsNewRow() ) {//phi
434 if ( in.IsNewColumn() ) {//eta
435 id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
436 if (!first) {
437 FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ;
438
439 if (time == 0. && energy == 0.) {
440 amp = 0 ;
441 }
442 else {
443 amp = static_cast<Int_t>( (energy - digitizer->GetECApedestal()) / digitizer->GetECAchannel() + 0.5 ) ;
444 }
445
446 if (amp > 0) {
447 new((*digits)[idigit]) AliEMCALDigit( -1, -1, id, amp, time) ;
448 idigit++ ;
449 }
450 Int_t index ;
451 for (index = 0; index < GetRawFormatTimeBins(); index++) {
452 gLowGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
453 gHighGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
454 }
455 } // not first
456 first = kFALSE ;
457 id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
458 if (in.GetModule() == GetRawFormatLowGainOffset() ) {
459 lowGainFlag = kTRUE ;
2d5d9e60 460 }
4884333f 461 else {
462 lowGainFlag = kFALSE ;
2d5d9e60 463 }
4884333f 464 } //new column-eta
465 }// new row-phi
2d5d9e60 466 if (lowGainFlag) {
467 gLowGain->SetPoint(in.GetTime(),
468 in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
469 in.GetSignal()) ;
470 }
471 else {
472 gHighGain->SetPoint(in.GetTime(),
473 in.GetTime() * GetRawFormatTimeMax() / GetRawFormatTimeBins(),
474 in.GetSignal() ) ;
475 }
476 } // EMCAL entries loop
477 digits->Sort() ;
4884333f 478
2d5d9e60 479 delete signalF ;
480 delete gLowGain;
481 delete gHighGain ;
4884333f 482
2d5d9e60 483 return ;
484}
485
486//____________________________________________________________________________
487void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time)
488{
489 // Fits the raw signal time distribution; from AliEMCALGetter
490
491 const Int_t kNoiseThreshold = 0 ;
492 Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
493 Double_t signal = 0., signalmax = 0. ;
494 energy = time = 0. ;
495
496 if (lowGainFlag) {
497 timezero1 = timezero2 = signalmax = timemax = 0. ;
498 signalF->FixParameter(0, GetRawFormatLowCharge()) ;
499 signalF->FixParameter(1, GetRawFormatLowGain()) ;
500 Int_t index ;
501 for (index = 0; index < GetRawFormatTimeBins(); index++) {
502 gLowGain->GetPoint(index, time, signal) ;
503 if (signal > kNoiseThreshold && timezero1 == 0.)
504 timezero1 = time ;
505 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
506 timezero2 = time ;
507 if (signal > signalmax) {
508 signalmax = signal ;
509 timemax = time ;
510 }
511 }
512 signalmax /= RawResponseFunctionMax(GetRawFormatLowCharge(),
513 GetRawFormatLowGain()) ;
514 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
515 signalF->SetParameter(2, signalmax) ;
516 signalF->SetParameter(3, timezero1) ;
517 gLowGain->Fit(signalF, "QRON", "", 0., timezero2); //, "QRON") ;
518 energy = signalF->GetParameter(2) ;
519 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
520 }
521 } else {
522 timezero1 = timezero2 = signalmax = timemax = 0. ;
523 signalF->FixParameter(0, GetRawFormatHighCharge()) ;
524 signalF->FixParameter(1, GetRawFormatHighGain()) ;
525 Int_t index ;
526 for (index = 0; index < GetRawFormatTimeBins(); index++) {
527 gHighGain->GetPoint(index, time, signal) ;
528 if (signal > kNoiseThreshold && timezero1 == 0.)
529 timezero1 = time ;
530 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
531 timezero2 = time ;
532 if (signal > signalmax) {
533 signalmax = signal ;
534 timemax = time ;
535 }
536 }
537 signalmax /= RawResponseFunctionMax(GetRawFormatHighCharge(),
538 GetRawFormatHighGain()) ;;
539 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
540 signalF->SetParameter(2, signalmax) ;
541 signalF->SetParameter(3, timezero1) ;
542 gHighGain->Fit(signalF, "QRON", "", 0., timezero2) ;
543 energy = signalF->GetParameter(2) ;
544 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
545 }
546 }
547
548 return;
549}
550
551//____________________________________________________________________________
8367ce9a 552void AliEMCAL::Hits2SDigits()
553{
554// create summable digits
555
ddca522a 556 GetGeometry();
4d33c797 557 AliEMCALSDigitizer emcalDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
558 emcalDigitizer.SetEventRange(0, -1) ; // do all the events
559 emcalDigitizer.ExecuteTask() ;
da480a28 560}
561
562//____________________________________________________________________________
5dee926e 563
8367ce9a 564AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
565{
566//different behaviour than standard (singleton getter)
567// --> to be discussed and made eventually coherent
568 fLoader = new AliEMCALLoader(GetName(),topfoldername);
569 return fLoader;
570}
571
046ae904 572//__________________________________________________________________
573Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
574{
575 // Shape of the electronics raw reponse:
56088960 576 // It is a semi-gaussian, 2nd order Gamma function of the general form
577 // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
578 // tp : peaking time par[0]
579 // n : order of the function
580 // C : integrating capacitor in the preamplifier
581 // A : open loop gain of the preamplifier
582 // Q : the total APD charge to be measured Q = C * energy
046ae904 583
56088960 584 Double_t signal ;
585 Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
046ae904 586
56088960 587 if (xx < 0 || xx > fgTimeMax)
588 signal = 0. ;
589 else {
590 Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
591 signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
592 }
593 return signal ;
046ae904 594}
595
596//__________________________________________________________________
56088960 597Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain)
598{
14ce0a6e 599 //compute the maximum of the raw response function and return
56088960 600 return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
601 / ( fgCapa * TMath::Exp(fgOrder) ) );
602
603}
604//__________________________________________________________________
605Bool_t AliEMCAL::RawSampledResponse(
606const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
046ae904 607{
608 // for a start time dtime and an amplitude damp given by digit,
56088960 609 // calculates the raw sampled response AliEMCAL::RawResponseFunction
046ae904 610
611 const Int_t kRawSignalOverflow = 0x3FF ;
56088960 612 Bool_t lowGain = kFALSE ;
613
614 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
615
616 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
617 signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
618 signalF.SetParameter(1, GetRawFormatHighGain() ) ;
619 signalF.SetParameter(2, damp) ;
620 signalF.SetParameter(3, dtime) ;
621 Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
622 Double_t signal = signalF.Eval(time) ;
623 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
624 signal = kRawSignalOverflow ;
625 lowGain = kTRUE ;
626 }
627 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
628
629 signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
630 signalF.SetParameter(1, GetRawFormatLowGain() ) ;
631 signal = signalF.Eval(time) ;
632 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
633 signal = kRawSignalOverflow ;
634 adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
635
046ae904 636 }
56088960 637 return lowGain ;
046ae904 638}