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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
17/* $Id$ */
18
19//_________________________________________________________________________
20// This is a TTask that makes SDigits out of Hits
21// The name of the TTask is also the title of the branch that will contain
22// the created SDigits
23// The title of the TTAsk is the name of the file that contains the hits from
24// which the SDigits are created
25// A Summable Digits is the sum of all hits originating
26// from one primary in one active cell
27// A threshold for assignment of the primary to SDigit is applied
28// SDigits are written to TreeS, branch "PHOS"
29// AliPHOSSDigitizer with all current parameters is written
30// to TreeS branch "AliPHOSSDigitizer".
31// Both branches have the same title. If necessary one can produce
32// another set of SDigits with different parameters. Two versions
33// can be distunguished using titles of the branches.
34// User case:
35// root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
36// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
37// root [1] s->ExecuteTask()
38// // Makes SDigitis for all events stored in galice.root
39// root [2] s->SetPedestalParameter(0.001)
40// // One can change parameters of digitization
41// root [3] s->SetSDigitsBranch("Pedestal 0.001")
42// // and write them into the new branch
43// root [4] s->ExecuteTask("deb all tim")
44// // available parameters:
45// deb - print # of produced SDigitis
46// deb all - print # and list of produced SDigits
47// tim - print benchmarking information
48//
49//*-- Author : Dmitri Peressounko (SUBATECH & KI)
50//////////////////////////////////////////////////////////////////////////////
51
52
53// --- ROOT system ---
54#include "TBenchmark.h"
55#include "TRandom.h"
56
57// --- Standard library ---
58
59// --- AliRoot header files ---
60#include "AliPHOSGeometry.h"
61#include "AliPHOSDigit.h"
62#include "AliPHOSGetter.h"
63#include "AliPHOSHit.h"
64#include "AliPHOSSDigitizer.h"
65
66ClassImp(AliPHOSSDigitizer)
67
68
69//____________________________________________________________________________
70 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
71{
72 // ctor
73 fFirstEvent = fLastEvent = 0 ;
74 fDefaultInit = kTRUE ;
75}
76
77//____________________________________________________________________________
78AliPHOSSDigitizer::AliPHOSSDigitizer(const char * alirunFileName,
79 const char * eventFolderName):
80 TTask("PHOS"+AliConfig::Instance()->GetSDigitizerTaskName(), alirunFileName),
81 fEventFolderName(eventFolderName)
82{
83
84 // ctor
85 fFirstEvent = fLastEvent = 0 ; // runs one event by defaut
86 InitParameters() ;
87 Init();
88 fDefaultInit = kFALSE ;
89}
90
91//____________________________________________________________________________
92AliPHOSSDigitizer::AliPHOSSDigitizer(const AliPHOSSDigitizer & sd)
93 : TTask(sd)
94{
95 //cpy ctor
96
97 fFirstEvent = sd.fFirstEvent ;
98 fLastEvent = sd.fLastEvent ;
99 fA = sd.fA ;
100 fB = sd.fB ;
101 fPrimThreshold = sd.fPrimThreshold ;
102 fSDigitsInRun = sd.fSDigitsInRun ;
103 SetName(sd.GetName()) ;
104 SetTitle(sd.GetTitle()) ;
105 fEventFolderName = sd.fEventFolderName;
106}
107
108
109//____________________________________________________________________________
110AliPHOSSDigitizer::~AliPHOSSDigitizer() {
111 //dtor
112 AliPHOSGetter * gime =
113 AliPHOSGetter::Instance(GetTitle(),fEventFolderName.Data());
114 gime->PhosLoader()->CleanSDigitizer();
115}
116//____________________________________________________________________________
117void AliPHOSSDigitizer::Init()
118{
119 // Uses the getter to access the required files
120
121 fInit = kTRUE ;
122
123 AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data());
124 if ( gime == 0 ) {
125 Fatal("Init" ,"Could not obtain the Getter object for file %s and event %s !", GetTitle(), fEventFolderName.Data()) ;
126 return ;
127 }
128
129 TString opt("SDigits") ;
130 if(gime->VersionExists(opt) ) {
131 Error( "Init", "Give a version name different from %s", fEventFolderName.Data() ) ;
132 fInit = kFALSE ;
133 }
134
135 gime->PostSDigitizer(this);
136 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
137
138}
139
140//____________________________________________________________________________
141void AliPHOSSDigitizer::InitParameters()
142{
143 // initializes the parameters for digitization
144 fA = 0;
145 fB = 10000000.;
146 fPrimThreshold = 0.01 ;
147 fSDigitsInRun = 0 ;
148}
149
150//____________________________________________________________________________
151void AliPHOSSDigitizer::Exec(Option_t *option)
152{
153 // Steering method to produce summable digits for events
154 // in the range from fFirstEvent to fLastEvent.
155 // This range is optionally set by SetEventRange().
156 // if fLastEvent=-1 (by default), then process events until the end.
157 //
158 // Summable digit is a sum of all hits in the same active
159 // volume into digit
160
161 if (strstr(option, "print") ) {
162 Print() ;
163 return ;
164 }
165
166 if(strstr(option,"tim"))
167 gBenchmark->Start("PHOSSDigitizer");
168
169 AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle()) ;
170
171 //switch off reloading of this task while getting event
172 if (!fInit) { // to prevent overwrite existing file
173 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
174 return ;
175 }
176
177 if (fLastEvent == -1)
178 fLastEvent = gime->MaxEvent() - 1 ;
179 else
180 fLastEvent = TMath::Min(fFirstEvent, gime->MaxEvent()); // only ine event at the time
181 Int_t nEvents = fLastEvent - fFirstEvent + 1;
182
183 Int_t ievent ;
184 for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
185 gime->Event(ievent,"H") ;
186 TTree * treeS = gime->TreeS();
187 TClonesArray * hits = gime->Hits() ;
188 TClonesArray * sdigits = gime->SDigits() ;
189 sdigits->Clear();
190 Int_t nSdigits = 0 ;
191 //Now make SDigits from hits, for PHOS it is the same, so just copy
192 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
193 // Attention nPrim is the number of primaries tracked by Geant
194 // and this number could be different to the number of Primaries in TreeK;
195 Int_t iprim ;
196
197 for (iprim = 0 ; iprim < nPrim ; iprim ++) {
198 //=========== Get the PHOS branch from Hits Tree for the Primary iprim
199 gime->Track(iprim) ;
200 Int_t i;
201 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
202 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
203 // Assign primary number only if contribution is significant
204
205 if( hit->GetEnergy() > fPrimThreshold)
206 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
207 Digitize(hit->GetEnergy()), hit->GetTime()) ;
208 else
209 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
210 Digitize(hit->GetEnergy()), hit->GetTime()) ;
211 nSdigits++ ;
212
213 }
214
215 } // loop over iprim
216
217 sdigits->Sort() ;
218
219 nSdigits = sdigits->GetEntriesFast() ;
220
221 fSDigitsInRun += nSdigits ;
222 sdigits->Expand(nSdigits) ;
223
224 Int_t i ;
225 for (i = 0 ; i < nSdigits ; i++) {
226 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
227 digit->SetIndexInList(i) ;
228 }
229
230 //Now write SDigits
231
232
233 //First list of sdigits
234
235 Int_t bufferSize = 32000 ;
236 TBranch * sdigitsBranch = treeS->Branch("PHOS",&sdigits,bufferSize);
237
238 sdigitsBranch->Fill() ;
239
240 gime->WriteSDigits("OVERWRITE");
241
242 //Next - SDigitizer
243
244 gime->WriteSDigitizer("OVERWRITE");
245
246 if(strstr(option,"deb"))
247 PrintSDigits(option) ;
248 }
249
250 Unload();
251
252 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
253
254 if(strstr(option,"tim")){
255 gBenchmark->Stop("PHOSSDigitizer");
256 Info("Exec"," took %f seconds for SDigitizing %f seconds per event",
257 gBenchmark->GetCpuTime("PHOSSDigitizer"), gBenchmark->GetCpuTime("PHOSSDigitizer")/nEvents) ;
258 }
259}
260
261//__________________________________________________________________
262void AliPHOSSDigitizer::Print()const
263{
264 // Prints parameters of SDigitizer
265 Info("Print", "\n------------------- %s -------------", GetName() ) ;
266 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
267 printf(" with digitization parameters A = %f\n", fA) ;
268 printf(" B = %f\n", fB) ;
269 printf(" Threshold for Primary assignment= %f\n", fPrimThreshold) ;
270 printf("---------------------------------------------------\n") ;
271
272}
273
274//__________________________________________________________________
275Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
276{
277 // Equal operator.
278 // SDititizers are equal if their pedestal, slope and threshold are equal
279
280 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
281 return kTRUE ;
282 else
283 return kFALSE ;
284}
285
286//__________________________________________________________________
287void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
288{
289 // Prints list of digits produced in the current pass of AliPHOSDigitizer
290
291
292 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
293 const TClonesArray * sdigits = gime->SDigits() ;
294
295 Info( "\nPrintSDigits", "event # %d %d sdigits", gAlice->GetEvNumber(), sdigits->GetEntriesFast() ) ;
296
297 if(strstr(option,"all")||strstr(option,"EMC")){
298
299 //loop over digits
300 AliPHOSDigit * digit;
301 printf("\nEMC sdigits\n") ;
302 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
303 Int_t index ;
304 for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
305 ((dynamic_cast<AliPHOSDigit *> (sdigits->At(index)))->GetId() <= maxEmc) ; index++) {
306 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
307 // if(digit->GetNprimary() == 0)
308 // continue;
309 printf("%6d %8d %6.5e %4d %2d :\n",
310 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
311 Int_t iprimary;
312 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
313 printf("%d ",digit->GetPrimary(iprimary+1) ) ;
314 }
315 }
316 }
317
318 if(strstr(option,"all")||strstr(option,"CPV")){
319
320 //loop over CPV digits
321 AliPHOSDigit * digit;
322 printf("\nCPV sdigits\n") ;
323 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
324 Int_t index ;
325 for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
326 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
327 if(digit->GetId() > maxEmc){
328 printf("\n%6d %8d %4d %2d :",
329 digit->GetId(), digit->GetAmp(), digit->GetIndexInList(), digit->GetNprimary()) ;
330 Int_t iprimary;
331 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
332 printf("%d ",digit->GetPrimary(iprimary+1) ) ;
333 }
334 }
335 }
336 }
337}
338
339//____________________________________________________________________________
340void AliPHOSSDigitizer::Unload() const
341{
342 // Unloads the objects from the folder
343 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
344 AliPHOSLoader * loader = gime->PhosLoader() ;
345 loader->UnloadHits() ;
346 loader->UnloadSDigits() ;
347}