Get the instance of the Getter without arguments (caused a mem leak)
[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>
2012850d 36
05a92d59 37// --- Standard library ---
2012850d 38
05a92d59 39// --- AliRoot header files ---
2012850d 40#include "AliMagF.h"
88cb7938 41#include "AliEMCAL.h"
f51151a0 42#include "AliEMCALGetter.h"
85a5290f 43#include "AliRun.h"
44#include "AliEMCALSDigitizer.h"
45#include "AliEMCALDigitizer.h"
f51151a0 46#include "AliAltroBuffer.h"
2012850d 47
48ClassImp(AliEMCAL)
56088960 49Double_t AliEMCAL::fgCapa = 1.; // 1pF
50Int_t AliEMCAL::fgOrder = 2 ;
51Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
52Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds
53Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
54
2012850d 55//____________________________________________________________________________
56AliEMCAL::AliEMCAL():AliDetector()
57{
05a92d59 58 // Default ctor
046ae904 59 fName = "EMCAL" ;
2012850d 60}
05a92d59 61
2012850d 62//____________________________________________________________________________
05a92d59 63AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
64{
65 // ctor : title is used to identify the layout
046ae904 66
56088960 67 fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
68 fHighGain = 6.64 ;
69 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
70 fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data
2012850d 71}
05a92d59 72
2012850d 73//____________________________________________________________________________
05a92d59 74AliEMCAL::~AliEMCAL()
75{
76
2012850d 77}
78
79//____________________________________________________________________________
8367ce9a 80void AliEMCAL::Copy(AliEMCAL & emcal)
81{
82 TObject::Copy(emcal) ;
56088960 83 emcal.fHighCharge = fHighCharge ;
84 emcal.fHighGain = fHighGain ;
85 emcal.fHighLowGainFactor = fHighLowGainFactor ;
86 emcal.fLowGainOffset = fLowGainOffset;
8367ce9a 87}
88
89//____________________________________________________________________________
90AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
91{
92 return new AliEMCALDigitizer(manager);
93}
94
95//____________________________________________________________________________
05a92d59 96void AliEMCAL::CreateMaterials()
97{
2012850d 98 // Definitions of materials to build EMCAL and associated tracking media.
99 // media number in idtmed are 1599 to 1698.
100
996cf306 101 // --- Air ---
102 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
103 Float_t zAir[4]={6.,7.,8.,18.};
104 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
105 Float_t dAir = 1.20479E-3;
106 AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ;
b13bbe81 107
2012850d 108 // --- Lead ---
109 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
110
b13bbe81 111
112 // --- The polysterene scintillator (CH) ---
113 Float_t aP[2] = {12.011, 1.00794} ;
114 Float_t zP[2] = {6.0, 1.0} ;
115 Float_t wP[2] = {1.0, 1.0} ;
116 Float_t dP = 1.032 ;
117
118 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
119
120 // --- Aluminium ---
121 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
122 // --- Absorption length is ignored ^
123
2012850d 124 // DEFINITION OF THE TRACKING MEDIA
125
126 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
127 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
128 Int_t isxfld = gAlice->Field()->Integ() ;
129 Float_t sxmgmx = gAlice->Field()->Max() ;
130
996cf306 131 // Air -> idtmed[1599]
132 AliMedium(0, "Air $", 0, 0,
133 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
2012850d 134
a63e0d5e 135 // The Lead -> idtmed[1600]
2012850d 136
137 AliMedium(1, "Lead $", 1, 0,
138 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
139
b13bbe81 140 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
141 AliMedium(2, "CPV scint. $", 2, 1,
61e0abb5 142 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
b13bbe81 143
a63e0d5e 144 // Various Aluminium parts made of Al -> idtmed[1602]
b13bbe81 145 AliMedium(3, "Al parts $", 3, 0,
146 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
147
2012850d 148
b13bbe81 149// --- Set decent energy thresholds for gamma and electron tracking
2012850d 150
151 // Tracking threshold for photons and electrons in Lead
ffa6d63b 152 gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ;
153 gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ;
154 gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ;
2012850d 155
156 // --- Generate explicitly delta rays in Lead ---
157 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
158 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
05a92d59 159 gMC->Gstpar(idtmed[1600], "DCUTE",0.00001) ;
160 gMC->Gstpar(idtmed[1600], "DCUTM",0.00001) ;
161
a63e0d5e 162// --- in aluminium parts ---
b13bbe81 163 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
164 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
05a92d59 165 gMC->Gstpar(idtmed[1602], "DCUTE",0.00001) ;
166 gMC->Gstpar(idtmed[1602], "DCUTM",0.00001) ;
b13bbe81 167
ffa6d63b 168// --- and finally thresholds for photons and electrons in the scintillator ---
61e0abb5 169 gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ;
170 gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
171 gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
172
ab37d09c 173 //set constants for Birk's Law implentation
174 fBirkC0 = 1;
175 fBirkC1 = 0.013/dP;
176 fBirkC2 = 9.6e-6/(dP * dP);
177
178
2012850d 179}
f6019cda 180
8367ce9a 181//____________________________________________________________________________
f51151a0 182void AliEMCAL::Digits2Raw()
183{
56088960 184 // convert digits of the current event to raw data
185 AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
f51151a0 186
187 // get the digits
56088960 188 loader->LoadDigits();
189 TClonesArray* digits = loader->Digits() ;
f51151a0 190
191 if (!digits) {
192 Error("Digits2Raw", "no digits found !");
193 return;
194 }
195
56088960 196 // get the digitizer
197 loader->LoadDigitizer();
198 AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
199
f51151a0 200 // get the geometry
56088960 201 AliEMCALGeometry* geom = GetGeometry();
f51151a0 202 if (!geom) {
203 Error("Digits2Raw", "no geometry found !");
204 return;
205 }
206
207 // some digitization constants
208 const Int_t kDDLOffset = 0x800;
56088960 209 const Int_t kThreshold = 1;
f51151a0 210 const Int_t kChannelsperDDL = 897 ;
f51151a0 211 AliAltroBuffer* buffer = NULL;
212 Int_t prevDDL = -1;
046ae904 213 Int_t adcValuesLow[fkTimeBins];
214 Int_t adcValuesHigh[fkTimeBins];
56088960 215
f51151a0 216 // loop over digits (assume ordered digits)
217 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
56088960 218 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
f51151a0 219 if (digit->GetAmp() < kThreshold)
220 continue;
221 Int_t iDDL = digit->GetId() / kChannelsperDDL ;
222 // for each DDL id is numbered from 1 to kChannelsperDDL -1
223 Int_t idDDL = digit->GetId() - iDDL * ( kChannelsperDDL - 1 ) ;
224 // new DDL
225 if (iDDL != prevDDL) {
226 // write real header and close previous file
227 if (buffer) {
228 buffer->Flush();
229 buffer->WriteDataHeader(kFALSE, kFALSE);
230 delete buffer;
231 }
232
233 // open new file and write dummy header
234 TString fileName("EMCAL_") ;
235 fileName += (iDDL + kDDLOffset) ;
236 fileName += ".ddl" ;
237 buffer = new AliAltroBuffer(fileName.Data(), 1);
238 buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
239
240 prevDDL = iDDL;
241 }
242
243 // out of time range signal (?)
56088960 244 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
f51151a0 245 buffer->FillBuffer(digit->GetAmp());
56088960 246 buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
f51151a0 247 buffer->FillBuffer(3); // bunch length
248 buffer->WriteTrailer(3, idDDL, 0, 0); // trailer
56088960 249
250 // calculate the time response function
f51151a0 251 } else {
56088960 252 Double_t energy = 0 ;
253 energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ;
254
255 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
256
257 if (lowgain)
258 buffer->WriteChannel(iDDL, 0, fLowGainOffset,
259 GetRawFormatTimeBins(), adcValuesLow, kThreshold);
260 else
261 buffer->WriteChannel(iDDL, 0, 0,
262 GetRawFormatTimeBins(), adcValuesHigh, kThreshold);
263
f51151a0 264 }
265 }
56088960 266
f51151a0 267 // write real header and close last file
268 if (buffer) {
269 buffer->Flush();
270 buffer->WriteDataHeader(kFALSE, kFALSE);
271 delete buffer;
272 }
56088960 273
274 loader->UnloadDigits();
f51151a0 275}
276
277//____________________________________________________________________________
8367ce9a 278void AliEMCAL::Hits2SDigits()
279{
280// create summable digits
281
282 AliEMCALSDigitizer* emcalDigitizer =
da480a28 283 new AliEMCALSDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
284 emcalDigitizer->SetEventRange(0, -1) ; // do all the events
285 emcalDigitizer->ExecuteTask() ;
286}
287
288//____________________________________________________________________________
8367ce9a 289AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
290{
291//different behaviour than standard (singleton getter)
292// --> to be discussed and made eventually coherent
293 fLoader = new AliEMCALLoader(GetName(),topfoldername);
294 return fLoader;
295}
296
046ae904 297//__________________________________________________________________
298Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
299{
300 // Shape of the electronics raw reponse:
56088960 301 // It is a semi-gaussian, 2nd order Gamma function of the general form
302 // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
303 // tp : peaking time par[0]
304 // n : order of the function
305 // C : integrating capacitor in the preamplifier
306 // A : open loop gain of the preamplifier
307 // Q : the total APD charge to be measured Q = C * energy
046ae904 308
56088960 309 Double_t signal ;
310 Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
046ae904 311
56088960 312 if (xx < 0 || xx > fgTimeMax)
313 signal = 0. ;
314 else {
315 Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
316 signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
317 }
318 return signal ;
046ae904 319}
320
321//__________________________________________________________________
56088960 322Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain)
323{
324 return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
325 / ( fgCapa * TMath::Exp(fgOrder) ) );
326
327}
328//__________________________________________________________________
329Bool_t AliEMCAL::RawSampledResponse(
330const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
046ae904 331{
332 // for a start time dtime and an amplitude damp given by digit,
56088960 333 // calculates the raw sampled response AliEMCAL::RawResponseFunction
046ae904 334
335 const Int_t kRawSignalOverflow = 0x3FF ;
56088960 336 Bool_t lowGain = kFALSE ;
337
338 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
339
340 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
341 signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
342 signalF.SetParameter(1, GetRawFormatHighGain() ) ;
343 signalF.SetParameter(2, damp) ;
344 signalF.SetParameter(3, dtime) ;
345 Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
346 Double_t signal = signalF.Eval(time) ;
347 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
348 signal = kRawSignalOverflow ;
349 lowGain = kTRUE ;
350 }
351 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
352
353 signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
354 signalF.SetParameter(1, GetRawFormatLowGain() ) ;
355 signal = signalF.Eval(time) ;
356 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
357 signal = kRawSignalOverflow ;
358 adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
359
046ae904 360 }
56088960 361 return lowGain ;
046ae904 362}
363
8367ce9a 364//____________________________________________________________________________
2012850d 365void AliEMCAL::SetTreeAddress()
366{
d64c959b 367 // Linking Hits in Tree to Hits array
2012850d 368 TBranch *branch;
369 char branchname[20];
370 sprintf(branchname,"%s",GetName());
371
372 // Branch address for hit tree
88cb7938 373 TTree *treeH = TreeH();
374 if (treeH) {
2012850d 375 branch = treeH->GetBranch(branchname);
88cb7938 376 if (branch)
377 {
d64c959b 378 if (fHits == 0x0)
379 fHits= new TClonesArray("AliEMCALHit",1000);
88cb7938 380 branch->SetAddress(&fHits);
381 }
382 else
383 {
384 Warning("SetTreeAddress","<%s> Failed",GetName());
385 }
2012850d 386 }
2012850d 387}
2012850d 388
85a5290f 389
85a5290f 390
85a5290f 391
8367ce9a 392