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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 | 29 | class 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" | |
2012850d | 51 | |
52 | ClassImp(AliEMCAL) | |
56088960 | 53 | Double_t AliEMCAL::fgCapa = 1.; // 1pF |
54 | Int_t AliEMCAL::fgOrder = 2 ; | |
55 | Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins | |
56 | Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds | |
57 | Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference | |
2d5d9e60 | 58 | // some digitization constants |
59 | Int_t AliEMCAL::fgDDLOffset = 0x800; | |
60 | Int_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) | |
63 | Int_t AliEMCAL::fgChannelsPerDDL = 768; // 2*(1152/3 or 12*32) | |
56088960 | 64 | |
2012850d | 65 | //____________________________________________________________________________ |
66 | AliEMCAL::AliEMCAL():AliDetector() | |
67 | { | |
05a92d59 | 68 | // Default ctor |
046ae904 | 69 | fName = "EMCAL" ; |
2012850d | 70 | } |
05a92d59 | 71 | |
2012850d | 72 | //____________________________________________________________________________ |
05a92d59 | 73 | AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title) |
74 | { | |
75 | // ctor : title is used to identify the layout | |
046ae904 | 76 | |
56088960 | 77 | fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits) |
78 | fHighGain = 6.64 ; | |
79 | fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits) | |
80 | fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data | |
2012850d | 81 | } |
05a92d59 | 82 | |
2012850d | 83 | //____________________________________________________________________________ |
05a92d59 | 84 | AliEMCAL::~AliEMCAL() |
85 | { | |
86 | ||
2012850d | 87 | } |
88 | ||
8367ce9a | 89 | //____________________________________________________________________________ |
5dee926e | 90 | void AliEMCAL::Copy(AliEMCAL & emcal) const |
8367ce9a | 91 | { |
92 | TObject::Copy(emcal) ; | |
56088960 | 93 | emcal.fHighCharge = fHighCharge ; |
94 | emcal.fHighGain = fHighGain ; | |
95 | emcal.fHighLowGainFactor = fHighLowGainFactor ; | |
96 | emcal.fLowGainOffset = fLowGainOffset; | |
8367ce9a | 97 | } |
98 | ||
99 | //____________________________________________________________________________ | |
100 | AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const | |
101 | { | |
102 | return new AliEMCALDigitizer(manager); | |
103 | } | |
104 | ||
2012850d | 105 | //____________________________________________________________________________ |
05a92d59 | 106 | void AliEMCAL::CreateMaterials() |
107 | { | |
2012850d | 108 | // Definitions of materials to build EMCAL and associated tracking media. |
109 | // media number in idtmed are 1599 to 1698. | |
110 | ||
996cf306 | 111 | // --- Air --- |
112 | Float_t aAir[4]={12.0107,14.0067,15.9994,39.948}; | |
113 | Float_t zAir[4]={6.,7.,8.,18.}; | |
114 | Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827}; | |
115 | Float_t dAir = 1.20479E-3; | |
116 | AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ; | |
b13bbe81 | 117 | |
2012850d | 118 | // --- Lead --- |
119 | AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ; | |
120 | ||
b13bbe81 | 121 | |
122 | // --- The polysterene scintillator (CH) --- | |
123 | Float_t aP[2] = {12.011, 1.00794} ; | |
124 | Float_t zP[2] = {6.0, 1.0} ; | |
125 | Float_t wP[2] = {1.0, 1.0} ; | |
126 | Float_t dP = 1.032 ; | |
127 | ||
128 | AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ; | |
129 | ||
130 | // --- Aluminium --- | |
131 | AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ; | |
132 | // --- Absorption length is ignored ^ | |
133 | ||
1963b290 | 134 | // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition |
135 | Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 }; | |
136 | Float_t zsteel[4] = { 26.,24.,28.,14. }; | |
137 | Float_t wsteel[4] = { .715,.18,.1,.005 }; | |
138 | AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); | |
139 | ||
2012850d | 140 | // DEFINITION OF THE TRACKING MEDIA |
141 | ||
142 | // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100] | |
143 | Int_t * idtmed = fIdtmed->GetArray() - 1599 ; | |
144 | Int_t isxfld = gAlice->Field()->Integ() ; | |
145 | Float_t sxmgmx = gAlice->Field()->Max() ; | |
146 | ||
996cf306 | 147 | // Air -> idtmed[1599] |
905263da | 148 | AliMedium(0, "Air$", 0, 0, |
996cf306 | 149 | isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ; |
2012850d | 150 | |
a63e0d5e | 151 | // The Lead -> idtmed[1600] |
2012850d | 152 | |
905263da | 153 | AliMedium(1, "Lead$", 1, 0, |
2012850d | 154 | isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ; |
155 | ||
b13bbe81 | 156 | // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601] |
905263da | 157 | AliMedium(2, "Scintillator$", 2, 1, |
61e0abb5 | 158 | isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ; |
b13bbe81 | 159 | |
a63e0d5e | 160 | // Various Aluminium parts made of Al -> idtmed[1602] |
905263da | 161 | AliMedium(3, "Al$", 3, 0, |
b13bbe81 | 162 | isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ; |
163 | ||
1963b290 | 164 | // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603] |
165 | AliMedium(4, "S steel$", 4, 0, | |
166 | isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ; | |
2012850d | 167 | |
b13bbe81 | 168 | // --- Set decent energy thresholds for gamma and electron tracking |
2012850d | 169 | |
170 | // Tracking threshold for photons and electrons in Lead | |
905263da | 171 | Float_t cutgam=10.e-5; // 100 kev; |
172 | Float_t cutele=10.e-5; // 100 kev; | |
173 | TString ntmp(GetTitle()); | |
174 | ntmp.ToUpper(); | |
175 | if(ntmp.Contains("10KEV")) { | |
176 | cutele = cutgam = 1.e-5; | |
177 | } else if(ntmp.Contains("50KEV")) { | |
178 | cutele = cutgam = 5.e-5; | |
179 | } else if(ntmp.Contains("100KEV")) { | |
180 | cutele = cutgam = 1.e-4; | |
181 | } else if(ntmp.Contains("200KEV")) { | |
182 | cutele = cutgam = 2.e-4; | |
183 | } else if(ntmp.Contains("500KEV")) { | |
184 | cutele = cutgam = 5.e-4; | |
185 | } | |
2012850d | 186 | |
905263da | 187 | gMC->Gstpar(idtmed[1600],"CUTGAM", cutgam); |
188 | gMC->Gstpar(idtmed[1600],"CUTELE", cutele); // 1MEV -> 0.1MEV; 15-aug-05 | |
189 | gMC->Gstpar(idtmed[1600],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM | |
190 | gMC->Gstpar(idtmed[1600],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM | |
2012850d | 191 | // --- Generate explicitly delta rays in Lead --- |
192 | gMC->Gstpar(idtmed[1600], "LOSS",3.) ; | |
193 | gMC->Gstpar(idtmed[1600], "DRAY",1.) ; | |
905263da | 194 | gMC->Gstpar(idtmed[1600], "DCUTE", cutele) ; |
195 | gMC->Gstpar(idtmed[1600], "DCUTM", cutele) ; | |
05a92d59 | 196 | |
a63e0d5e | 197 | // --- in aluminium parts --- |
905263da | 198 | gMC->Gstpar(idtmed[1602],"CUTGAM", cutgam) ; |
199 | gMC->Gstpar(idtmed[1602],"CUTELE", cutele) ; | |
200 | gMC->Gstpar(idtmed[1602],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM | |
201 | gMC->Gstpar(idtmed[1602],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM | |
b13bbe81 | 202 | gMC->Gstpar(idtmed[1602], "LOSS",3.) ; |
203 | gMC->Gstpar(idtmed[1602], "DRAY",1.) ; | |
905263da | 204 | gMC->Gstpar(idtmed[1602], "DCUTE", cutele) ; |
205 | gMC->Gstpar(idtmed[1602], "DCUTM", cutele) ; | |
b13bbe81 | 206 | |
ffa6d63b | 207 | // --- and finally thresholds for photons and electrons in the scintillator --- |
905263da | 208 | gMC->Gstpar(idtmed[1601],"CUTGAM", cutgam) ; |
209 | gMC->Gstpar(idtmed[1601],"CUTELE", cutele) ;// 1MEV -> 0.1MEV; 15-aug-05 | |
210 | gMC->Gstpar(idtmed[1601],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM | |
211 | gMC->Gstpar(idtmed[1601],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM | |
212 | gMC->Gstpar(idtmed[1601], "LOSS",3.) ; // generate delta rays | |
213 | gMC->Gstpar(idtmed[1601], "DRAY",1.) ; | |
214 | gMC->Gstpar(idtmed[1601], "DCUTE", cutele) ; | |
215 | gMC->Gstpar(idtmed[1601], "DCUTM", cutele) ; | |
216 | ||
217 | // S steel - | |
218 | gMC->Gstpar(idtmed[1603],"CUTGAM", cutgam); | |
219 | gMC->Gstpar(idtmed[1603],"CUTELE", cutele); | |
220 | gMC->Gstpar(idtmed[1603],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM | |
221 | gMC->Gstpar(idtmed[1603],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM | |
222 | // --- Generate explicitly delta rays | |
1963b290 | 223 | gMC->Gstpar(idtmed[1603], "LOSS",3.); |
224 | gMC->Gstpar(idtmed[1603], "DRAY",1.); | |
905263da | 225 | gMC->Gstpar(idtmed[1603], "DCUTE", cutele) ; |
226 | gMC->Gstpar(idtmed[1603], "DCUTM", cutele) ; | |
1963b290 | 227 | |
ab37d09c | 228 | //set constants for Birk's Law implentation |
229 | fBirkC0 = 1; | |
230 | fBirkC1 = 0.013/dP; | |
231 | fBirkC2 = 9.6e-6/(dP * dP); | |
232 | ||
2012850d | 233 | } |
f6019cda | 234 | |
f51151a0 | 235 | //____________________________________________________________________________ |
236 | void AliEMCAL::Digits2Raw() | |
237 | { | |
56088960 | 238 | // convert digits of the current event to raw data |
239 | AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ; | |
f51151a0 | 240 | |
241 | // get the digits | |
56088960 | 242 | loader->LoadDigits(); |
243 | TClonesArray* digits = loader->Digits() ; | |
f51151a0 | 244 | |
245 | if (!digits) { | |
246 | Error("Digits2Raw", "no digits found !"); | |
247 | return; | |
248 | } | |
249 | ||
56088960 | 250 | // get the digitizer |
251 | loader->LoadDigitizer(); | |
252 | AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ; | |
253 | ||
f51151a0 | 254 | |
f51151a0 | 255 | AliAltroBuffer* buffer = NULL; |
256 | Int_t prevDDL = -1; | |
046ae904 | 257 | Int_t adcValuesLow[fkTimeBins]; |
258 | Int_t adcValuesHigh[fkTimeBins]; | |
56088960 | 259 | |
f51151a0 | 260 | // loop over digits (assume ordered digits) |
261 | for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) { | |
56088960 | 262 | AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ; |
2d5d9e60 | 263 | if (digit->GetAmp() < fgThreshold) |
f51151a0 | 264 | continue; |
2d5d9e60 | 265 | Int_t iDDL = digit->GetId() / fgChannelsPerDDL ; |
266 | // for each DDL id is numbered from 1 to fgChannelsperDDL -1 | |
267 | Int_t idDDL = digit->GetId() - iDDL * ( fgChannelsPerDDL - 1 ) ; | |
f51151a0 | 268 | // new DDL |
269 | if (iDDL != prevDDL) { | |
270 | // write real header and close previous file | |
271 | if (buffer) { | |
272 | buffer->Flush(); | |
273 | buffer->WriteDataHeader(kFALSE, kFALSE); | |
274 | delete buffer; | |
275 | } | |
276 | ||
277 | // open new file and write dummy header | |
278 | TString fileName("EMCAL_") ; | |
2d5d9e60 | 279 | fileName += (iDDL + fgDDLOffset) ; |
f51151a0 | 280 | fileName += ".ddl" ; |
281 | buffer = new AliAltroBuffer(fileName.Data(), 1); | |
282 | buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy; | |
283 | ||
284 | prevDDL = iDDL; | |
285 | } | |
286 | ||
287 | // out of time range signal (?) | |
56088960 | 288 | if (digit->GetTimeR() > GetRawFormatTimeMax() ) { |
f51151a0 | 289 | buffer->FillBuffer(digit->GetAmp()); |
56088960 | 290 | buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin |
f51151a0 | 291 | buffer->FillBuffer(3); // bunch length |
292 | buffer->WriteTrailer(3, idDDL, 0, 0); // trailer | |
56088960 | 293 | |
294 | // calculate the time response function | |
f51151a0 | 295 | } else { |
56088960 | 296 | Double_t energy = 0 ; |
297 | energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ; | |
298 | ||
299 | Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ; | |
300 | ||
301 | if (lowgain) | |
302 | buffer->WriteChannel(iDDL, 0, fLowGainOffset, | |
2d5d9e60 | 303 | GetRawFormatTimeBins(), adcValuesLow, fgThreshold); |
56088960 | 304 | else |
305 | buffer->WriteChannel(iDDL, 0, 0, | |
2d5d9e60 | 306 | GetRawFormatTimeBins(), adcValuesHigh, fgThreshold); |
56088960 | 307 | |
f51151a0 | 308 | } |
309 | } | |
56088960 | 310 | |
f51151a0 | 311 | // write real header and close last file |
312 | if (buffer) { | |
313 | buffer->Flush(); | |
314 | buffer->WriteDataHeader(kFALSE, kFALSE); | |
315 | delete buffer; | |
316 | } | |
56088960 | 317 | |
318 | loader->UnloadDigits(); | |
f51151a0 | 319 | } |
320 | ||
2d5d9e60 | 321 | //____________________________________________________________________________ |
322 | void AliEMCAL::Raw2Digits(AliRawReader* reader) | |
323 | { | |
4800667c | 324 | // convert raw data of the current event to digits |
ddca522a | 325 | GetGeometry(); |
2d5d9e60 | 326 | AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ; |
327 | ||
328 | // get the digits | |
329 | loader->CleanDigits(); // start from scratch | |
330 | loader->LoadDigits(); | |
331 | TClonesArray* digits = loader->Digits() ; | |
332 | digits->Clear(); // yes, this is perhaps somewhat paranoid.. [clearing an extra time] | |
333 | ||
334 | if (!digits) { | |
335 | Error("Raw2Digits", "no digits found !"); | |
336 | return; | |
337 | } | |
338 | if (!reader) { | |
339 | Error("Raw2Digits", "no raw reader found !"); | |
340 | return; | |
341 | } | |
342 | ||
343 | // and get the digitizer too | |
344 | loader->LoadDigitizer(); | |
345 | AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ; | |
346 | ||
347 | // Use AliAltroRawStream to read the ALTRO format. No need to | |
348 | // reinvent the wheel :-) | |
349 | AliEMCALRawStream in(reader); | |
350 | // Select EMCAL DDL's; lowest 8 bits of DDL offser is used for something else.. | |
351 | reader->Select(fgDDLOffset >> 8); | |
352 | ||
353 | // reading is from previously existing AliEMCALGetter.cxx | |
354 | // ReadRaw method | |
355 | Bool_t first = kTRUE ; | |
356 | ||
357 | TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4); | |
358 | signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero"); | |
359 | ||
360 | Int_t id = -1; | |
361 | Bool_t lowGainFlag = kFALSE ; | |
362 | ||
363 | Int_t idigit = 0 ; | |
364 | Int_t amp = 0 ; | |
365 | Double_t time = 0. ; | |
366 | Double_t energy = 0. ; | |
367 | ||
368 | TGraph * gLowGain = new TGraph(GetRawFormatTimeBins()) ; | |
369 | TGraph * gHighGain= new TGraph(GetRawFormatTimeBins()) ; | |
370 | ||
371 | while ( in.Next() ) { // EMCAL entries loop | |
372 | if ( in.IsNewId() ) { | |
373 | if (!first) { | |
374 | FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ; | |
375 | ||
376 | if (time == 0. && energy == 0.) { | |
377 | amp = 0 ; | |
378 | } | |
379 | else { | |
380 | amp = static_cast<Int_t>( (energy - digitizer->GetECApedestal()) / digitizer->GetECAchannel() + 0.5 ) ; | |
381 | } | |
382 | ||
383 | if (amp > 0) { | |
384 | new((*digits)[idigit]) AliEMCALDigit( -1, -1, id, amp, time) ; | |
385 | idigit++ ; | |
386 | } | |
387 | Int_t index ; | |
388 | for (index = 0; index < GetRawFormatTimeBins(); index++) { | |
389 | gLowGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ; | |
390 | gHighGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ; | |
391 | } | |
392 | } // not first | |
393 | first = kFALSE ; | |
394 | id = in.GetId() ; | |
395 | if (in.GetModule() == GetRawFormatLowGainOffset() ) { | |
396 | lowGainFlag = kTRUE ; | |
397 | } | |
398 | else { | |
399 | lowGainFlag = kFALSE ; | |
400 | } | |
401 | } // new Id? | |
402 | if (lowGainFlag) { | |
403 | gLowGain->SetPoint(in.GetTime(), | |
404 | in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(), | |
405 | in.GetSignal()) ; | |
406 | } | |
407 | else { | |
408 | gHighGain->SetPoint(in.GetTime(), | |
409 | in.GetTime() * GetRawFormatTimeMax() / GetRawFormatTimeBins(), | |
410 | in.GetSignal() ) ; | |
411 | } | |
412 | } // EMCAL entries loop | |
413 | digits->Sort() ; | |
414 | ||
415 | delete signalF ; | |
416 | delete gLowGain; | |
417 | delete gHighGain ; | |
418 | ||
419 | return ; | |
420 | } | |
421 | ||
422 | //____________________________________________________________________________ | |
423 | void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time) | |
424 | { | |
425 | // Fits the raw signal time distribution; from AliEMCALGetter | |
426 | ||
427 | const Int_t kNoiseThreshold = 0 ; | |
428 | Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ; | |
429 | Double_t signal = 0., signalmax = 0. ; | |
430 | energy = time = 0. ; | |
431 | ||
432 | if (lowGainFlag) { | |
433 | timezero1 = timezero2 = signalmax = timemax = 0. ; | |
434 | signalF->FixParameter(0, GetRawFormatLowCharge()) ; | |
435 | signalF->FixParameter(1, GetRawFormatLowGain()) ; | |
436 | Int_t index ; | |
437 | for (index = 0; index < GetRawFormatTimeBins(); index++) { | |
438 | gLowGain->GetPoint(index, time, signal) ; | |
439 | if (signal > kNoiseThreshold && timezero1 == 0.) | |
440 | timezero1 = time ; | |
441 | if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.) | |
442 | timezero2 = time ; | |
443 | if (signal > signalmax) { | |
444 | signalmax = signal ; | |
445 | timemax = time ; | |
446 | } | |
447 | } | |
448 | signalmax /= RawResponseFunctionMax(GetRawFormatLowCharge(), | |
449 | GetRawFormatLowGain()) ; | |
450 | if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise | |
451 | signalF->SetParameter(2, signalmax) ; | |
452 | signalF->SetParameter(3, timezero1) ; | |
453 | gLowGain->Fit(signalF, "QRON", "", 0., timezero2); //, "QRON") ; | |
454 | energy = signalF->GetParameter(2) ; | |
455 | time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ; | |
456 | } | |
457 | } else { | |
458 | timezero1 = timezero2 = signalmax = timemax = 0. ; | |
459 | signalF->FixParameter(0, GetRawFormatHighCharge()) ; | |
460 | signalF->FixParameter(1, GetRawFormatHighGain()) ; | |
461 | Int_t index ; | |
462 | for (index = 0; index < GetRawFormatTimeBins(); index++) { | |
463 | gHighGain->GetPoint(index, time, signal) ; | |
464 | if (signal > kNoiseThreshold && timezero1 == 0.) | |
465 | timezero1 = time ; | |
466 | if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.) | |
467 | timezero2 = time ; | |
468 | if (signal > signalmax) { | |
469 | signalmax = signal ; | |
470 | timemax = time ; | |
471 | } | |
472 | } | |
473 | signalmax /= RawResponseFunctionMax(GetRawFormatHighCharge(), | |
474 | GetRawFormatHighGain()) ;; | |
475 | if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise | |
476 | signalF->SetParameter(2, signalmax) ; | |
477 | signalF->SetParameter(3, timezero1) ; | |
478 | gHighGain->Fit(signalF, "QRON", "", 0., timezero2) ; | |
479 | energy = signalF->GetParameter(2) ; | |
480 | time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ; | |
481 | } | |
482 | } | |
483 | ||
484 | return; | |
485 | } | |
486 | ||
8367ce9a | 487 | //____________________________________________________________________________ |
488 | void AliEMCAL::Hits2SDigits() | |
489 | { | |
490 | // create summable digits | |
491 | ||
ddca522a | 492 | GetGeometry(); |
4d33c797 | 493 | AliEMCALSDigitizer emcalDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ; |
494 | emcalDigitizer.SetEventRange(0, -1) ; // do all the events | |
495 | emcalDigitizer.ExecuteTask() ; | |
da480a28 | 496 | } |
497 | ||
8367ce9a | 498 | //____________________________________________________________________________ |
5dee926e | 499 | |
8367ce9a | 500 | AliLoader* AliEMCAL::MakeLoader(const char* topfoldername) |
501 | { | |
502 | //different behaviour than standard (singleton getter) | |
503 | // --> to be discussed and made eventually coherent | |
504 | fLoader = new AliEMCALLoader(GetName(),topfoldername); | |
505 | return fLoader; | |
506 | } | |
507 | ||
046ae904 | 508 | //__________________________________________________________________ |
509 | Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par) | |
510 | { | |
511 | // Shape of the electronics raw reponse: | |
56088960 | 512 | // It is a semi-gaussian, 2nd order Gamma function of the general form |
513 | // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with | |
514 | // tp : peaking time par[0] | |
515 | // n : order of the function | |
516 | // C : integrating capacitor in the preamplifier | |
517 | // A : open loop gain of the preamplifier | |
518 | // Q : the total APD charge to be measured Q = C * energy | |
046ae904 | 519 | |
56088960 | 520 | Double_t signal ; |
521 | Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ; | |
046ae904 | 522 | |
56088960 | 523 | if (xx < 0 || xx > fgTimeMax) |
524 | signal = 0. ; | |
525 | else { | |
526 | Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ; | |
527 | signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ; | |
528 | } | |
529 | return signal ; | |
046ae904 | 530 | } |
531 | ||
532 | //__________________________________________________________________ | |
56088960 | 533 | Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain) |
534 | { | |
535 | return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder) | |
536 | / ( fgCapa * TMath::Exp(fgOrder) ) ); | |
537 | ||
538 | } | |
539 | //__________________________________________________________________ | |
540 | Bool_t AliEMCAL::RawSampledResponse( | |
541 | const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const | |
046ae904 | 542 | { |
543 | // for a start time dtime and an amplitude damp given by digit, | |
56088960 | 544 | // calculates the raw sampled response AliEMCAL::RawResponseFunction |
046ae904 | 545 | |
546 | const Int_t kRawSignalOverflow = 0x3FF ; | |
56088960 | 547 | Bool_t lowGain = kFALSE ; |
548 | ||
549 | TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4); | |
550 | ||
551 | for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) { | |
552 | signalF.SetParameter(0, GetRawFormatHighCharge() ) ; | |
553 | signalF.SetParameter(1, GetRawFormatHighGain() ) ; | |
554 | signalF.SetParameter(2, damp) ; | |
555 | signalF.SetParameter(3, dtime) ; | |
556 | Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ; | |
557 | Double_t signal = signalF.Eval(time) ; | |
558 | if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits | |
559 | signal = kRawSignalOverflow ; | |
560 | lowGain = kTRUE ; | |
561 | } | |
562 | adcH[iTime] = static_cast<Int_t>(signal + 0.5) ; | |
563 | ||
564 | signalF.SetParameter(0, GetRawFormatLowCharge() ) ; | |
565 | signalF.SetParameter(1, GetRawFormatLowGain() ) ; | |
566 | signal = signalF.Eval(time) ; | |
567 | if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits | |
568 | signal = kRawSignalOverflow ; | |
569 | adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ; | |
570 | ||
046ae904 | 571 | } |
56088960 | 572 | return lowGain ; |
046ae904 | 573 | } |