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[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 * $Log$
7235aed2 20 * Revision 1.49 2007/01/22 17:29:12 pavlinov
21 * EMCAL geometry can be created independently form anything now
22 *
89557f6d 23 * Revision 1.48 2006/12/19 02:34:13 pavlinov
24 * clean up the EMCAL name scheme : super module -> module -> tower (or cell)
25 *
2bb3725c 26 * Revision 1.47 2006/12/05 17:12:03 gustavo
27 * Updated AliEMCAL::Digits2Raw, reads first provisional RCU mapping files to make Raw data with new AliCaloAltroMapping and AliCaloRawStream
28 *
4884333f 29 *
30 */
2012850d 31//_________________________________________________________________________
32// Base Class for EMCAL description:
ffa6d63b 33// This class contains material definitions
34// for the EMCAL - It does not place the detector in Alice
2012850d 35//*-- Author: Yves Schutz (SUBATECH)
b13bbe81 36//
37//*-- Additional Contributions: Sahal Yacoob (LBNL/UCT)
38//
2012850d 39//////////////////////////////////////////////////////////////////////////////
40
2012850d 41// --- ROOT system ---
b13bbe81 42class TFile;
88cb7938 43#include <TFolder.h>
88cb7938 44#include <TTree.h>
45#include <TVirtualMC.h>
046ae904 46#include <TH1F.h>
47#include <TF1.h>
48#include <TRandom.h>
2d5d9e60 49#include <TGraph.h>
2012850d 50
05a92d59 51// --- Standard library ---
2012850d 52
05a92d59 53// --- AliRoot header files ---
2012850d 54#include "AliMagF.h"
88cb7938 55#include "AliEMCAL.h"
85a5290f 56#include "AliRun.h"
5dee926e 57#include "AliEMCALLoader.h"
85a5290f 58#include "AliEMCALSDigitizer.h"
59#include "AliEMCALDigitizer.h"
5dee926e 60#include "AliEMCALDigit.h"
4884333f 61//#include "AliAltroMapping.h"
62#include "AliCaloAltroMapping.h"
f51151a0 63#include "AliAltroBuffer.h"
2d5d9e60 64#include "AliRawReader.h"
4884333f 65#include "AliCaloRawStream.h"
362c9d61 66#include "AliDAQ.h"
2012850d 67
68ClassImp(AliEMCAL)
56088960 69Double_t AliEMCAL::fgCapa = 1.; // 1pF
70Int_t AliEMCAL::fgOrder = 2 ;
71Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
72Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds
73Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
2d5d9e60 74// some digitization constants
2d5d9e60 75Int_t AliEMCAL::fgThreshold = 1;
4884333f 76Int_t AliEMCAL::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
77
2012850d 78//____________________________________________________________________________
18a21c7c 79AliEMCAL::AliEMCAL()
80 : AliDetector(),
81 fBirkC0(0),
82 fBirkC1(0.),
83 fBirkC2(0.),
84 fHighCharge(0.),
85 fHighGain(0.),
86 fHighLowGainFactor(0.),
87 fLowGainOffset(0)
2012850d 88{
05a92d59 89 // Default ctor
046ae904 90 fName = "EMCAL" ;
7235aed2 91 InitConstants();
0a4cb131 92
2012850d 93}
05a92d59 94
2012850d 95//____________________________________________________________________________
18a21c7c 96AliEMCAL::AliEMCAL(const char* name, const char* title)
97 : AliDetector(name,title),
98 fBirkC0(0),
99 fBirkC1(0.),
100 fBirkC2(0.),
101 fHighCharge(0.),
102 fHighGain(0.),
103 fHighLowGainFactor(0.),
104 fLowGainOffset(0)
05a92d59 105{
106 // ctor : title is used to identify the layout
7235aed2 107 InitConstants();
0a4cb131 108
109}
110
111//____________________________________________________________________________
05a92d59 112AliEMCAL::~AliEMCAL()
113{
14ce0a6e 114 //dtor
2012850d 115}
116
117//____________________________________________________________________________
7235aed2 118void AliEMCAL::InitConstants()
0a4cb131 119{
120 //initialize EMCAL values
121 fBirkC0 = 1;
122 fBirkC1 = 0.013/1.032;
123 fBirkC2 = 9.6e-6/(1.032 * 1.032);
124
125 fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
126 fHighGain = 6.64 ;
127 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
128 fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data
129}
130
131//____________________________________________________________________________
7235aed2 132void AliEMCAL::Init()
05a92d59 133{
7235aed2 134 //EMCAL cuts
2012850d 135 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
b13bbe81 136// --- Set decent energy thresholds for gamma and electron tracking
2012850d 137
138 // Tracking threshold for photons and electrons in Lead
905263da 139 Float_t cutgam=10.e-5; // 100 kev;
140 Float_t cutele=10.e-5; // 100 kev;
141 TString ntmp(GetTitle());
142 ntmp.ToUpper();
143 if(ntmp.Contains("10KEV")) {
144 cutele = cutgam = 1.e-5;
145 } else if(ntmp.Contains("50KEV")) {
146 cutele = cutgam = 5.e-5;
147 } else if(ntmp.Contains("100KEV")) {
148 cutele = cutgam = 1.e-4;
149 } else if(ntmp.Contains("200KEV")) {
150 cutele = cutgam = 2.e-4;
151 } else if(ntmp.Contains("500KEV")) {
152 cutele = cutgam = 5.e-4;
153 }
2012850d 154
905263da 155 gMC->Gstpar(idtmed[1600],"CUTGAM", cutgam);
156 gMC->Gstpar(idtmed[1600],"CUTELE", cutele); // 1MEV -> 0.1MEV; 15-aug-05
157 gMC->Gstpar(idtmed[1600],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
158 gMC->Gstpar(idtmed[1600],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
2012850d 159 // --- Generate explicitly delta rays in Lead ---
89557f6d 160 gMC->Gstpar(idtmed[1600], "LOSS", 3) ;
161 gMC->Gstpar(idtmed[1600], "DRAY", 1) ;
905263da 162 gMC->Gstpar(idtmed[1600], "DCUTE", cutele) ;
163 gMC->Gstpar(idtmed[1600], "DCUTM", cutele) ;
05a92d59 164
a63e0d5e 165// --- in aluminium parts ---
905263da 166 gMC->Gstpar(idtmed[1602],"CUTGAM", cutgam) ;
167 gMC->Gstpar(idtmed[1602],"CUTELE", cutele) ;
168 gMC->Gstpar(idtmed[1602],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
169 gMC->Gstpar(idtmed[1602],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
b13bbe81 170 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
171 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
905263da 172 gMC->Gstpar(idtmed[1602], "DCUTE", cutele) ;
173 gMC->Gstpar(idtmed[1602], "DCUTM", cutele) ;
b13bbe81 174
ffa6d63b 175// --- and finally thresholds for photons and electrons in the scintillator ---
905263da 176 gMC->Gstpar(idtmed[1601],"CUTGAM", cutgam) ;
177 gMC->Gstpar(idtmed[1601],"CUTELE", cutele) ;// 1MEV -> 0.1MEV; 15-aug-05
178 gMC->Gstpar(idtmed[1601],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
179 gMC->Gstpar(idtmed[1601],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
89557f6d 180 gMC->Gstpar(idtmed[1601], "LOSS",3) ; // generate delta rays
181 gMC->Gstpar(idtmed[1601], "DRAY",1) ;
905263da 182 gMC->Gstpar(idtmed[1601], "DCUTE", cutele) ;
183 gMC->Gstpar(idtmed[1601], "DCUTM", cutele) ;
184
185 // S steel -
186 gMC->Gstpar(idtmed[1603],"CUTGAM", cutgam);
187 gMC->Gstpar(idtmed[1603],"CUTELE", cutele);
188 gMC->Gstpar(idtmed[1603],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
189 gMC->Gstpar(idtmed[1603],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
190 // --- Generate explicitly delta rays
89557f6d 191 gMC->Gstpar(idtmed[1603], "LOSS",3);
192 gMC->Gstpar(idtmed[1603], "DRAY",1);
905263da 193 gMC->Gstpar(idtmed[1603], "DCUTE", cutele) ;
194 gMC->Gstpar(idtmed[1603], "DCUTM", cutele) ;
1963b290 195
7235aed2 196 AliEMCALGeometry* geom = GetGeometry();
89557f6d 197 if(geom->GetILOSS()>=0) {
198 for(int i=1600; i<=1603; i++) gMC->Gstpar(idtmed[i], "LOSS", geom->GetILOSS()) ;
199 }
200 if(geom->GetIHADR()>=0) {
201 for(int i=1600; i<=1603; i++) gMC->Gstpar(idtmed[i], "HADR", geom->GetIHADR()) ;
202 }
7235aed2 203}
204
205//____________________________________________________________________________
206AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
207{
208 //create and return the digitizer
209 return new AliEMCALDigitizer(manager);
210}
211
212//____________________________________________________________________________
213void AliEMCAL::CreateMaterials()
214{
215 // Definitions of materials to build EMCAL and associated tracking media.
216 // media number in idtmed are 1599 to 1698.
217 // --- Air ---
218 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
219 Float_t zAir[4]={6.,7.,8.,18.};
220 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
221 Float_t dAir = 1.20479E-3;
222 AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ;
223
224 // --- Lead ---
225 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
226
227
228 // --- The polysterene scintillator (CH) ---
229 Float_t aP[2] = {12.011, 1.00794} ;
230 Float_t zP[2] = {6.0, 1.0} ;
231 Float_t wP[2] = {1.0, 1.0} ;
232 Float_t dP = 1.032 ;
233
234 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
235
236 // --- Aluminium ---
237 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
238 // --- Absorption length is ignored ^
239
240 // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition
241 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
242 Float_t zsteel[4] = { 26.,24.,28.,14. };
243 Float_t wsteel[4] = { .715,.18,.1,.005 };
244 AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
245
246 // DEFINITION OF THE TRACKING MEDIA
247
248 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
249 Int_t isxfld = gAlice->Field()->Integ() ;
250 Float_t sxmgmx = gAlice->Field()->Max() ;
251
252 // Air -> idtmed[1599]
253 AliMedium(0, "Air$", 0, 0,
254 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
255
256 // The Lead -> idtmed[1600]
257
258 AliMedium(1, "Lead$", 1, 0,
259 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
260
261 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
262 float deemax = 0.1; // maximum fractional energy loss in one step (0 < DEEMAX â\89¤ 1);i
263 AliMedium(2, "Scintillator$", 2, 1,
264 isxfld, sxmgmx, 10.0, 0.001, deemax, 0.001, 0.001, 0, 0) ;
265
266 // Various Aluminium parts made of Al -> idtmed[1602]
267 AliMedium(3, "Al$", 3, 0,
268 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
269
270 // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603]
271 AliMedium(4, "S steel$", 4, 0,
272 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
273
89557f6d 274
ab37d09c 275 //set constants for Birk's Law implentation
276 fBirkC0 = 1;
277 fBirkC1 = 0.013/dP;
278 fBirkC2 = 9.6e-6/(dP * dP);
279
2012850d 280}
4884333f 281 //____________________________________________________________________________
f51151a0 282void AliEMCAL::Digits2Raw()
283{
56088960 284 // convert digits of the current event to raw data
4884333f 285
56088960 286 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
4884333f 287
f51151a0 288 // get the digits
00d03c2f 289 loader->LoadDigits("EMCAL");
811570e1 290 loader->GetEvent();
56088960 291 TClonesArray* digits = loader->Digits() ;
4884333f 292
f51151a0 293 if (!digits) {
294 Error("Digits2Raw", "no digits found !");
295 return;
296 }
4884333f 297
56088960 298 // get the digitizer
299 loader->LoadDigitizer();
300 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
301
4884333f 302 // get the geometry
303 AliEMCALGeometry* geom = GetGeometry();
304 if (!geom) {
305 AliError(Form("No geometry found !"));
306 return;
307 }
308
f51151a0 309 AliAltroBuffer* buffer = NULL;
310 Int_t prevDDL = -1;
14ce0a6e 311 Int_t adcValuesLow[fgkTimeBins];
312 Int_t adcValuesHigh[fgkTimeBins];
4884333f 313
314 //Load Mapping RCU files once
315 TString path = gSystem->Getenv("ALICE_ROOT");
316 path += "/EMCAL/mapping/RCU";
317 TString path0 = path+"0.data";//This file will change in future
318 TString path1 = path+"1.data";//This file will change in future
319 AliAltroMapping * mapping[2] ; // For the moment only 2
320 mapping[0] = new AliCaloAltroMapping(path0.Data());
321 mapping[1] = new AliCaloAltroMapping(path1.Data());
322
f51151a0 323 // loop over digits (assume ordered digits)
324 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
56088960 325 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
2d5d9e60 326 if (digit->GetAmp() < fgThreshold)
f51151a0 327 continue;
4884333f 328
329 //get cell indeces
330 Int_t nSM = 0;
331 Int_t nIphi = 0;
332 Int_t nIeta = 0;
333 Int_t iphi = 0;
334 Int_t ieta = 0;
2bb3725c 335 Int_t nModule = 0;
336 geom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
337 geom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
4884333f 338
339 //Check which is the RCU of the cell.
340 Int_t iRCU = -111;
341 //RCU0
342 if (0<=iphi&&iphi<8) iRCU=0; // first cable row
343 else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
344 //second cable row
345 //RCU1
346 else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
347 //second cable row
348 else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
349
350 //Which DDL?
351 Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
352
f51151a0 353 // new DDL
354 if (iDDL != prevDDL) {
355 // write real header and close previous file
4884333f 356
f51151a0 357 if (buffer) {
358 buffer->Flush();
359 buffer->WriteDataHeader(kFALSE, kFALSE);
360 delete buffer;
361 }
4884333f 362
f51151a0 363 // open new file and write dummy header
4884333f 364 TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
365 buffer = new AliAltroBuffer(fileName.Data(),mapping[iRCU]);
f51151a0 366 buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
f51151a0 367 prevDDL = iDDL;
368 }
4884333f 369
f51151a0 370 // out of time range signal (?)
56088960 371 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
4884333f 372 AliInfo("Signal is out of time range.\n");
373 buffer->FillBuffer((Int_t)digit->GetAmp());
56088960 374 buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
4884333f 375 buffer->FillBuffer(3); // bunch length
376 buffer->WriteTrailer(3, ieta, iphi, nSM); // trailer
56088960 377 // calculate the time response function
f51151a0 378 } else {
4884333f 379
380 Double_t energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ;
56088960 381
382 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
383
384 if (lowgain)
4884333f 385 buffer->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
56088960 386 else
4884333f 387 buffer->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
388
f51151a0 389 }
390 }
56088960 391
f51151a0 392 // write real header and close last file
393 if (buffer) {
394 buffer->Flush();
395 buffer->WriteDataHeader(kFALSE, kFALSE);
396 delete buffer;
397 }
4884333f 398 mapping[0]->Delete();
399 mapping[1]->Delete();
56088960 400 loader->UnloadDigits();
f51151a0 401}
402
403//____________________________________________________________________________
2d5d9e60 404void AliEMCAL::Raw2Digits(AliRawReader* reader)
405{
4800667c 406 // convert raw data of the current event to digits
4884333f 407 AliEMCALGeometry * geom = GetGeometry();
2d5d9e60 408 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
409
410 // get the digits
411 loader->CleanDigits(); // start from scratch
00d03c2f 412 loader->LoadDigits("EMCAL");
2d5d9e60 413 TClonesArray* digits = loader->Digits() ;
414 digits->Clear(); // yes, this is perhaps somewhat paranoid.. [clearing an extra time]
415
416 if (!digits) {
417 Error("Raw2Digits", "no digits found !");
418 return;
419 }
420 if (!reader) {
421 Error("Raw2Digits", "no raw reader found !");
422 return;
423 }
424
425 // and get the digitizer too
426 loader->LoadDigitizer();
427 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
428
429 // Use AliAltroRawStream to read the ALTRO format. No need to
430 // reinvent the wheel :-)
4884333f 431 AliCaloRawStream in(reader,"EMCAL");
362c9d61 432 // Select EMCAL DDL's;
433 reader->Select("EMCAL");
2d5d9e60 434
435 // reading is from previously existing AliEMCALGetter.cxx
436 // ReadRaw method
437 Bool_t first = kTRUE ;
438
439 TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
440 signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero");
441
2d5d9e60 442 Bool_t lowGainFlag = kFALSE ;
4884333f 443 Int_t id = -1;
2d5d9e60 444 Int_t idigit = 0 ;
445 Int_t amp = 0 ;
446 Double_t time = 0. ;
447 Double_t energy = 0. ;
448
449 TGraph * gLowGain = new TGraph(GetRawFormatTimeBins()) ;
450 TGraph * gHighGain= new TGraph(GetRawFormatTimeBins()) ;
451
452 while ( in.Next() ) { // EMCAL entries loop
4884333f 453 if ( in.IsNewRow() ) {//phi
454 if ( in.IsNewColumn() ) {//eta
455 id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
456 if (!first) {
457 FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ;
458
459 if (time == 0. && energy == 0.) {
460 amp = 0 ;
461 }
462 else {
463 amp = static_cast<Int_t>( (energy - digitizer->GetECApedestal()) / digitizer->GetECAchannel() + 0.5 ) ;
464 }
465
466 if (amp > 0) {
467 new((*digits)[idigit]) AliEMCALDigit( -1, -1, id, amp, time) ;
468 idigit++ ;
469 }
470 Int_t index ;
471 for (index = 0; index < GetRawFormatTimeBins(); index++) {
472 gLowGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
473 gHighGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
474 }
475 } // not first
476 first = kFALSE ;
477 id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
478 if (in.GetModule() == GetRawFormatLowGainOffset() ) {
479 lowGainFlag = kTRUE ;
2d5d9e60 480 }
4884333f 481 else {
482 lowGainFlag = kFALSE ;
2d5d9e60 483 }
4884333f 484 } //new column-eta
485 }// new row-phi
2d5d9e60 486 if (lowGainFlag) {
487 gLowGain->SetPoint(in.GetTime(),
488 in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
489 in.GetSignal()) ;
490 }
491 else {
492 gHighGain->SetPoint(in.GetTime(),
493 in.GetTime() * GetRawFormatTimeMax() / GetRawFormatTimeBins(),
494 in.GetSignal() ) ;
495 }
496 } // EMCAL entries loop
497 digits->Sort() ;
4884333f 498
2d5d9e60 499 delete signalF ;
500 delete gLowGain;
501 delete gHighGain ;
4884333f 502
2d5d9e60 503 return ;
504}
505
506//____________________________________________________________________________
507void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time)
508{
509 // Fits the raw signal time distribution; from AliEMCALGetter
510
511 const Int_t kNoiseThreshold = 0 ;
512 Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
513 Double_t signal = 0., signalmax = 0. ;
514 energy = time = 0. ;
515
516 if (lowGainFlag) {
517 timezero1 = timezero2 = signalmax = timemax = 0. ;
518 signalF->FixParameter(0, GetRawFormatLowCharge()) ;
519 signalF->FixParameter(1, GetRawFormatLowGain()) ;
520 Int_t index ;
521 for (index = 0; index < GetRawFormatTimeBins(); index++) {
522 gLowGain->GetPoint(index, time, signal) ;
523 if (signal > kNoiseThreshold && timezero1 == 0.)
524 timezero1 = time ;
525 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
526 timezero2 = time ;
527 if (signal > signalmax) {
528 signalmax = signal ;
529 timemax = time ;
530 }
531 }
532 signalmax /= RawResponseFunctionMax(GetRawFormatLowCharge(),
533 GetRawFormatLowGain()) ;
534 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
535 signalF->SetParameter(2, signalmax) ;
536 signalF->SetParameter(3, timezero1) ;
537 gLowGain->Fit(signalF, "QRON", "", 0., timezero2); //, "QRON") ;
538 energy = signalF->GetParameter(2) ;
539 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
540 }
541 } else {
542 timezero1 = timezero2 = signalmax = timemax = 0. ;
543 signalF->FixParameter(0, GetRawFormatHighCharge()) ;
544 signalF->FixParameter(1, GetRawFormatHighGain()) ;
545 Int_t index ;
546 for (index = 0; index < GetRawFormatTimeBins(); index++) {
547 gHighGain->GetPoint(index, time, signal) ;
548 if (signal > kNoiseThreshold && timezero1 == 0.)
549 timezero1 = time ;
550 if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
551 timezero2 = time ;
552 if (signal > signalmax) {
553 signalmax = signal ;
554 timemax = time ;
555 }
556 }
557 signalmax /= RawResponseFunctionMax(GetRawFormatHighCharge(),
558 GetRawFormatHighGain()) ;;
559 if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
560 signalF->SetParameter(2, signalmax) ;
561 signalF->SetParameter(3, timezero1) ;
562 gHighGain->Fit(signalF, "QRON", "", 0., timezero2) ;
563 energy = signalF->GetParameter(2) ;
564 time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
565 }
566 }
567
568 return;
569}
570
571//____________________________________________________________________________
8367ce9a 572void AliEMCAL::Hits2SDigits()
573{
574// create summable digits
575
ddca522a 576 GetGeometry();
4d33c797 577 AliEMCALSDigitizer emcalDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
578 emcalDigitizer.SetEventRange(0, -1) ; // do all the events
579 emcalDigitizer.ExecuteTask() ;
da480a28 580}
581
582//____________________________________________________________________________
5dee926e 583
8367ce9a 584AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
585{
586//different behaviour than standard (singleton getter)
587// --> to be discussed and made eventually coherent
588 fLoader = new AliEMCALLoader(GetName(),topfoldername);
589 return fLoader;
590}
591
046ae904 592//__________________________________________________________________
593Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
594{
595 // Shape of the electronics raw reponse:
56088960 596 // It is a semi-gaussian, 2nd order Gamma function of the general form
597 // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
598 // tp : peaking time par[0]
599 // n : order of the function
600 // C : integrating capacitor in the preamplifier
601 // A : open loop gain of the preamplifier
602 // Q : the total APD charge to be measured Q = C * energy
046ae904 603
56088960 604 Double_t signal ;
605 Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
046ae904 606
56088960 607 if (xx < 0 || xx > fgTimeMax)
608 signal = 0. ;
609 else {
610 Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
611 signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
612 }
613 return signal ;
046ae904 614}
615
616//__________________________________________________________________
56088960 617Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain)
618{
14ce0a6e 619 //compute the maximum of the raw response function and return
56088960 620 return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
621 / ( fgCapa * TMath::Exp(fgOrder) ) );
622
623}
624//__________________________________________________________________
625Bool_t AliEMCAL::RawSampledResponse(
626const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
046ae904 627{
628 // for a start time dtime and an amplitude damp given by digit,
56088960 629 // calculates the raw sampled response AliEMCAL::RawResponseFunction
046ae904 630
631 const Int_t kRawSignalOverflow = 0x3FF ;
56088960 632 Bool_t lowGain = kFALSE ;
633
634 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
635
636 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
637 signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
638 signalF.SetParameter(1, GetRawFormatHighGain() ) ;
639 signalF.SetParameter(2, damp) ;
640 signalF.SetParameter(3, dtime) ;
641 Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
642 Double_t signal = signalF.Eval(time) ;
643 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
644 signal = kRawSignalOverflow ;
645 lowGain = kTRUE ;
646 }
647 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
648
649 signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
650 signalF.SetParameter(1, GetRawFormatLowGain() ) ;
651 signal = signalF.Eval(time) ;
652 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
653 signal = kRawSignalOverflow ;
654 adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
655
046ae904 656 }
56088960 657 return lowGain ;
046ae904 658}