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7587f5a5 | 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 | ||
b2a60966 | 16 | /* $Id$ */ |
5f20d3fb | 17 | |
7587f5a5 | 18 | //_________________________________________________________________________ |
5f20d3fb | 19 | // Implementation version v1 of PHOS Manager class |
a3dfe79c | 20 | //--- |
21 | // Layout EMC + PPSD has name GPS2: | |
ed4205d8 | 22 | // Produces cumulated hits |
a3dfe79c | 23 | //--- |
24 | // Layout EMC + CPV has name IHEP: | |
ed4205d8 | 25 | // Produces hits for CPV, cumulated hits |
26 | //--- | |
27 | // Layout EMC + CPV + PPSD has name GPS: | |
28 | // Produces hits for CPV, cumulated hits | |
29 | //--- | |
5f20d3fb | 30 | //*-- Author: Yves Schutz (SUBATECH) |
b2a60966 | 31 | |
7587f5a5 | 32 | |
33 | // --- ROOT system --- | |
bea63bea | 34 | |
35 | #include "TBRIK.h" | |
36 | #include "TNode.h" | |
7587f5a5 | 37 | #include "TRandom.h" |
94de3818 | 38 | #include "TTree.h" |
7587f5a5 | 39 | |
5f20d3fb | 40 | |
7587f5a5 | 41 | // --- Standard library --- |
42 | ||
de9ec31b | 43 | #include <stdio.h> |
44 | #include <string.h> | |
45 | #include <stdlib.h> | |
46 | #include <strstream.h> | |
7587f5a5 | 47 | |
48 | // --- AliRoot header files --- | |
49 | ||
50 | #include "AliPHOSv1.h" | |
51 | #include "AliPHOSHit.h" | |
52 | #include "AliPHOSDigit.h" | |
bea63bea | 53 | #include "AliPHOSReconstructioner.h" |
b37750a6 | 54 | #include "AliPHOSSDigitizer.h" |
7587f5a5 | 55 | #include "AliRun.h" |
56 | #include "AliConst.h" | |
94de3818 | 57 | #include "AliMC.h" |
7587f5a5 | 58 | |
59 | ClassImp(AliPHOSv1) | |
60 | ||
bea63bea | 61 | //____________________________________________________________________________ |
02ab1add | 62 | AliPHOSv1::AliPHOSv1(): |
63 | AliPHOSv0() | |
bea63bea | 64 | { |
5f20d3fb | 65 | // ctor |
ed4205d8 | 66 | |
67 | fReconstructioner = 0; | |
68 | fTrackSegmentMaker = 0; | |
037cc66d | 69 | |
bea63bea | 70 | } |
71 | ||
7587f5a5 | 72 | //____________________________________________________________________________ |
73 | AliPHOSv1::AliPHOSv1(const char *name, const char *title): | |
e04976bd | 74 | AliPHOSv0(name,title) |
7587f5a5 | 75 | { |
5f20d3fb | 76 | // ctor : title is used to identify the layout |
fa412d9b | 77 | // GPS2 = 5 modules (EMC + PPSD) |
78 | // IHEP = 5 modules (EMC + CPV ) | |
ed4205d8 | 79 | // MIXT = 4 modules (EMC + CPV ) and 1 module (EMC + PPSD) |
5f20d3fb | 80 | // |
ed4205d8 | 81 | // We store hits : |
5f20d3fb | 82 | // - fHits (the "normal" one), which retains the hits associated with |
83 | // the current primary particle being tracked | |
84 | // (this array is reset after each primary has been tracked). | |
85 | // | |
fa412d9b | 86 | |
5f20d3fb | 87 | fPinElectronicNoise = 0.010 ; |
037cc66d | 88 | fDigitThreshold = 0.01 ; // 1 GeV |
89 | fDigitizeA= 0. ; | |
90 | fDigitizeB = 10000000. ; | |
91 | ||
5f20d3fb | 92 | |
93 | // We do not want to save in TreeH the raw hits | |
94 | // But save the cumulated hits instead (need to create the branch myself) | |
95 | // It is put in the Digit Tree because the TreeH is filled after each primary | |
fa412d9b | 96 | // and the TreeD at the end of the event (branch is set in FinishEvent() ). |
5f20d3fb | 97 | |
ed4205d8 | 98 | fHits= new TClonesArray("AliPHOSHit",1000) ; |
5f20d3fb | 99 | |
ed4205d8 | 100 | fNhits = 0 ; |
5f20d3fb | 101 | |
ed4205d8 | 102 | fReconstructioner = 0; |
103 | fTrackSegmentMaker = 0; | |
5f20d3fb | 104 | |
5f20d3fb | 105 | fIshunt = 1 ; // All hits are associated with primary particles |
fa412d9b | 106 | |
5f20d3fb | 107 | } |
108 | ||
109 | //____________________________________________________________________________ | |
110 | AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title): | |
111 | AliPHOSv0(name,title) | |
112 | { | |
113 | // ctor : title is used to identify the layout | |
114 | // GPS2 = 5 modules (EMC + PPSD) | |
5f20d3fb | 115 | |
116 | fPinElectronicNoise = 0.010 ; | |
117 | ||
118 | // We do not want to save in TreeH the raw hits | |
5f20d3fb | 119 | |
ed4205d8 | 120 | fDigits = 0 ; |
121 | fHits= new TClonesArray("AliPHOSHit",1000) ; | |
b73f246d | 122 | |
ed4205d8 | 123 | fNhits = 0 ; |
5f20d3fb | 124 | |
125 | fIshunt = 1 ; // All hits are associated with primary particles | |
126 | ||
127 | // gets an instance of the geometry parameters class | |
128 | fGeom = AliPHOSGeometry::GetInstance(title, "") ; | |
129 | ||
130 | if (fGeom->IsInitialized() ) | |
88bdfa12 | 131 | cout << "AliPHOS" << Version() << " : PHOS geometry intialized for " << fGeom->GetName() << endl ; |
5f20d3fb | 132 | else |
fc879520 | 133 | cout << "AliPHOS" << Version() << " : PHOS geometry initialization failed !" << endl ; |
5f20d3fb | 134 | |
135 | // Defining the PHOS Reconstructioner | |
136 | ||
137 | fReconstructioner = Reconstructioner ; | |
138 | ||
7587f5a5 | 139 | } |
b2a60966 | 140 | |
7587f5a5 | 141 | //____________________________________________________________________________ |
bea63bea | 142 | AliPHOSv1::~AliPHOSv1() |
b2a60966 | 143 | { |
bea63bea | 144 | // dtor |
5f20d3fb | 145 | |
ed4205d8 | 146 | if ( fHits) { |
147 | fHits->Delete() ; | |
148 | delete fHits ; | |
149 | fHits = 0 ; | |
8dfa469d | 150 | } |
5f20d3fb | 151 | |
037cc66d | 152 | if ( fSDigits) { |
153 | fSDigits->Delete() ; | |
154 | delete fSDigits ; | |
155 | fSDigits = 0 ; | |
156 | } | |
157 | ||
ed4205d8 | 158 | if ( fDigits) { |
159 | fDigits->Delete() ; | |
160 | delete fDigits ; | |
161 | fDigits = 0 ; | |
162 | } | |
5f20d3fb | 163 | |
ed4205d8 | 164 | if ( fEmcRecPoints ) { |
165 | fEmcRecPoints->Delete() ; | |
166 | delete fEmcRecPoints ; | |
167 | fEmcRecPoints = 0 ; | |
168 | } | |
169 | ||
170 | if ( fPpsdRecPoints ) { | |
171 | fPpsdRecPoints->Delete() ; | |
172 | delete fPpsdRecPoints ; | |
173 | fPpsdRecPoints = 0 ; | |
174 | } | |
fad3e5b9 | 175 | |
ed4205d8 | 176 | if ( fTrackSegments ) { |
177 | fTrackSegments->Delete() ; | |
178 | delete fTrackSegments ; | |
179 | fTrackSegments = 0 ; | |
180 | } | |
181 | ||
7587f5a5 | 182 | } |
183 | ||
7587f5a5 | 184 | //____________________________________________________________________________ |
b37750a6 | 185 | void AliPHOSv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t Id, Float_t * hits) |
bea63bea | 186 | { |
187 | // Add a hit to the hit list. | |
5f20d3fb | 188 | // A PHOS hit is the sum of all hits in a single crystal |
189 | // or in a single PPSD gas cell | |
bea63bea | 190 | |
5f20d3fb | 191 | Int_t hitCounter ; |
bea63bea | 192 | AliPHOSHit *newHit ; |
5f20d3fb | 193 | AliPHOSHit *curHit ; |
194 | Bool_t deja = kFALSE ; | |
bea63bea | 195 | |
b37750a6 | 196 | newHit = new AliPHOSHit(shunt, primary, tracknumber, Id, hits) ; |
bea63bea | 197 | |
7854a24a | 198 | for ( hitCounter = fNhits-1 ; hitCounter >= 0 && !deja ; hitCounter-- ) { |
ed4205d8 | 199 | curHit = (AliPHOSHit*) (*fHits)[hitCounter] ; |
b37750a6 | 200 | if(curHit->GetPrimary() != primary) break ; // We add hits with the same primary, while GEANT treats primaries consequently |
ed4205d8 | 201 | if( *curHit == *newHit ) { |
202 | *curHit = *curHit + *newHit ; | |
203 | deja = kTRUE ; | |
5f20d3fb | 204 | } |
205 | } | |
206 | ||
207 | if ( !deja ) { | |
ed4205d8 | 208 | new((*fHits)[fNhits]) AliPHOSHit(*newHit) ; |
209 | fNhits++ ; | |
5f20d3fb | 210 | } |
211 | ||
bea63bea | 212 | delete newHit; |
bea63bea | 213 | } |
214 | ||
ed4205d8 | 215 | //____________________________________________________________________________ |
037cc66d | 216 | void AliPHOSv1::Hits2SDigits(){ |
b37750a6 | 217 | char * fileSDigits = 0 ; |
218 | AliPHOSSDigitizer * sd = new AliPHOSSDigitizer(fileSDigits) ; | |
219 | sd->SetPedestalParameter(fDigitizeA) ; | |
220 | sd->SetSlopeParameter(fDigitizeB) ; | |
221 | sd->Exec("") ; | |
222 | delete sd ; | |
037cc66d | 223 | } |
b37750a6 | 224 | |
037cc66d | 225 | //____________________________________________________________________________ |
226 | void AliPHOSv1::SDigits2Digits(){ | |
227 | //Adds noise to the summable digits and removes everething below thresholds | |
228 | //Note, that sDigits should be SORTED in accordance with abs ID. | |
229 | ||
230 | ||
231 | gAlice->TreeS()->GetEvent(0) ; | |
037cc66d | 232 | |
ad8cfaf4 | 233 | // First calculate noise induced by the PIN diode of the PbWO crystals |
037cc66d | 234 | Int_t iCurSDigit = 0 ; |
ad8cfaf4 | 235 | |
037cc66d | 236 | //we assume, that there is al least one EMC digit... |
550bee17 | 237 | if(fSDigits->GetEntries() == 0) { |
238 | cout << "PHOS::SDigits2Digits> No SDigits !!! Do not produce Digits " << endl ; | |
239 | return ; | |
240 | } | |
037cc66d | 241 | |
550bee17 | 242 | Int_t idCurSDigit = ((AliPHOSDigit *)fSDigits->At(0))->GetId() ; |
037cc66d | 243 | |
244 | Int_t absID ; | |
245 | for(absID = 1; absID < fGeom->GetNModules()*fGeom->GetNPhi()*fGeom->GetNZ(); absID++){ | |
037cc66d | 246 | Float_t noise = gRandom->Gaus(0., fPinElectronicNoise) ; |
247 | if(absID < idCurSDigit ){ | |
037cc66d | 248 | if(noise >fDigitThreshold ){ |
037cc66d | 249 | new((*fDigits)[fNdigits]) AliPHOSDigit( -1,absID,Digitize(noise) ) ; |
037cc66d | 250 | fNdigits++ ; |
251 | } | |
252 | } | |
253 | else{ //add noise and may be remove the true hit | |
037cc66d | 254 | Float_t signal = noise + Calibrate(((AliPHOSDigit *)fSDigits->At(iCurSDigit))->GetAmp()) ; |
037cc66d | 255 | if( signal >fDigitThreshold ){ |
037cc66d | 256 | AliPHOSDigit * digit = (AliPHOSDigit*) fSDigits->At(iCurSDigit) ; |
257 | new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ; | |
258 | ((AliPHOSDigit *)fDigits->At(fNdigits))->SetAmp(Digitize(signal)); | |
037cc66d | 259 | fNdigits++ ; |
260 | } | |
261 | ||
262 | if(iCurSDigit < fSDigits->GetEntries()-1){ | |
263 | iCurSDigit++ ; | |
264 | idCurSDigit = ((AliPHOSDigit*)fSDigits->At(iCurSDigit))->GetId() ; | |
265 | } | |
266 | else | |
267 | idCurSDigit = 10000000; //no real hits left | |
268 | } | |
ed4205d8 | 269 | |
037cc66d | 270 | } |
271 | ||
272 | //remove PPSD/CPV digits below thresholds | |
273 | Int_t idigit ; | |
274 | for(idigit = iCurSDigit; idigit < fSDigits->GetEntries() ; idigit++){ //loop over CPV/PPSD digits | |
275 | ||
276 | AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(idigit) ; | |
277 | Float_t ene = Calibrate(digit->GetAmp()) ; | |
278 | ||
279 | Int_t relid[4] ; | |
280 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
281 | if ( relid[0] > fGeom->GetNCPVModules() ){ //ppsd | |
282 | if ( ( (relid[1] > 0) && (ene > fPpsdEnergyThreshold)) || //PPSD digit | |
283 | ( (relid[1] < 0) && (ene > fCpvEnergyThreshold ) ) ) //CPV digit | |
284 | new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ; | |
285 | fNdigits++ ; | |
bea63bea | 286 | } |
037cc66d | 287 | } |
ed4205d8 | 288 | |
bea63bea | 289 | fDigits->Compress() ; |
ed4205d8 | 290 | |
291 | fNdigits = fDigits->GetEntries() ; | |
292 | fDigits->Expand(fNdigits) ; | |
bea63bea | 293 | |
037cc66d | 294 | Int_t i ; |
bea63bea | 295 | for (i = 0 ; i < fNdigits ; i++) { |
037cc66d | 296 | AliPHOSDigit * digit = (AliPHOSDigit *) fDigits->At(i) ; |
297 | digit->SetIndexInList(i) ; | |
bea63bea | 298 | } |
fa412d9b | 299 | |
ed4205d8 | 300 | gAlice->TreeD()->Fill() ; |
5f20d3fb | 301 | |
ed4205d8 | 302 | gAlice->TreeD()->Write(0,TObject::kOverwrite) ; |
303 | ||
304 | } | |
2ab0c725 | 305 | |
5f20d3fb | 306 | //___________________________________________________________________________ |
2ab0c725 | 307 | void AliPHOSv1::MakeBranch(Option_t* opt, char *file) |
037cc66d | 308 | { |
309 | ||
5cf7bbad | 310 | const char *cH ; |
5f20d3fb | 311 | // Create new branche in the current Root Tree in the digit Tree |
5f20d3fb | 312 | AliDetector::MakeBranch(opt) ; |
037cc66d | 313 | |
314 | ||
315 | cH = strstr(opt,"S"); | |
316 | //Create a branch for SDigits | |
317 | if( cH ){ | |
318 | char branchname[20]; | |
319 | sprintf(branchname,"%s",GetName()); | |
320 | if(fSDigits) | |
321 | fSDigits->Clear(); | |
ad8cfaf4 | 322 | |
037cc66d | 323 | fnSdigits = 0 ; |
037cc66d | 324 | gAlice->MakeBranchInTree(gAlice->TreeS(),branchname,&fSDigits,fBufferSize,file); |
fa412d9b | 325 | } |
ed4205d8 | 326 | |
037cc66d | 327 | cH = strstr(opt,"D"); |
328 | //Create a branch for Digits | |
329 | if( cH ){ | |
330 | char branchname[20]; | |
331 | sprintf(branchname,"%s",GetName()); | |
ad8cfaf4 | 332 | |
333 | if(fDigits) | |
037cc66d | 334 | fDigits->Clear(); |
037cc66d | 335 | |
ad8cfaf4 | 336 | gAlice->MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,fBufferSize,file); |
037cc66d | 337 | } |
338 | ||
339 | cH = strstr(opt,"R"); | |
340 | //Create a branch for Reconstruction | |
341 | if( cH ){ | |
342 | char branchname[20]; | |
343 | ||
344 | Int_t splitlevel = 0 ; | |
ad8cfaf4 | 345 | |
346 | if(fEmcRecPoints) | |
347 | fEmcRecPoints->Delete() ; | |
037cc66d | 348 | |
349 | if ( fEmcRecPoints && gAlice->TreeR() ) { | |
350 | sprintf(branchname,"%sEmcRP",GetName()) ; | |
3247125a | 351 | gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,"TObjArray",&fEmcRecPoints, fBufferSize, splitlevel,file); |
037cc66d | 352 | } |
353 | ||
ad8cfaf4 | 354 | if(fPpsdRecPoints) |
355 | fPpsdRecPoints->Delete() ; | |
037cc66d | 356 | |
357 | if ( fPpsdRecPoints && gAlice->TreeR() ) { | |
358 | sprintf(branchname,"%sPpsdRP",GetName()) ; | |
3247125a | 359 | gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,"TObjArray",&fPpsdRecPoints, fBufferSize, splitlevel,file); |
037cc66d | 360 | } |
361 | ||
ad8cfaf4 | 362 | if(fTrackSegments) |
3247125a | 363 | fTrackSegments->Clear() ; |
037cc66d | 364 | |
365 | if ( fTrackSegments && gAlice->TreeR() ) { | |
366 | sprintf(branchname,"%sTS",GetName()) ; | |
3247125a | 367 | gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,&fTrackSegments,fBufferSize,file); |
037cc66d | 368 | } |
369 | ||
ad8cfaf4 | 370 | if(fRecParticles) |
3247125a | 371 | fRecParticles->Clear() ; |
037cc66d | 372 | |
373 | if ( fRecParticles && gAlice->TreeR() ) { | |
374 | sprintf(branchname,"%sRP",GetName()) ; | |
3247125a | 375 | gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,&fRecParticles,fBufferSize,file); |
037cc66d | 376 | } |
377 | ||
378 | } | |
379 | ||
bea63bea | 380 | } |
381 | ||
5f20d3fb | 382 | //_____________________________________________________________________________ |
383 | void AliPHOSv1::Reconstruction(AliPHOSReconstructioner * Reconstructioner) | |
384 | { | |
385 | // 1. Reinitializes the existing RecPoint, TrackSegment, and RecParticles Lists and | |
386 | // 2. Creates TreeR with a branch for each list | |
387 | // 3. Steers the reconstruction processes | |
388 | // 4. Saves the 3 lists in TreeR | |
389 | // 5. Write the Tree to File | |
390 | ||
391 | fReconstructioner = Reconstructioner ; | |
037cc66d | 392 | |
5f20d3fb | 393 | // 1. |
394 | ||
395 | // gAlice->MakeTree("R") ; | |
5f20d3fb | 396 | |
037cc66d | 397 | MakeBranch("R") ; |
5f20d3fb | 398 | |
399 | // 3. | |
b73f246d | 400 | |
fad3e5b9 | 401 | fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles); |
b73f246d | 402 | |
fad3e5b9 | 403 | printf("Reconstruction: %d %d %d %d\n", |
404 | fEmcRecPoints->GetEntries(),fPpsdRecPoints->GetEntries(), | |
b73f246d | 405 | fTrackSegments->GetEntries(),fRecParticles->GetEntries()); |
5f20d3fb | 406 | |
407 | // 4. Expand or Shrink the arrays to the proper size | |
408 | ||
409 | Int_t size ; | |
410 | ||
411 | size = fEmcRecPoints->GetEntries() ; | |
412 | fEmcRecPoints->Expand(size) ; | |
ed4205d8 | 413 | |
5f20d3fb | 414 | size = fPpsdRecPoints->GetEntries() ; |
415 | fPpsdRecPoints->Expand(size) ; | |
416 | ||
417 | size = fTrackSegments->GetEntries() ; | |
418 | fTrackSegments->Expand(size) ; | |
419 | ||
420 | size = fRecParticles->GetEntries() ; | |
421 | fRecParticles->Expand(size) ; | |
422 | ||
423 | gAlice->TreeR()->Fill() ; | |
5f20d3fb | 424 | // 5. |
425 | ||
4a2ca5e9 | 426 | gAlice->TreeR()->Write(0,TObject::kOverwrite) ; |
5f20d3fb | 427 | |
428 | // Deleting reconstructed objects | |
429 | ResetReconstruction(); | |
430 | ||
431 | } | |
432 | ||
5f20d3fb | 433 | //____________________________________________________________________________ |
434 | void AliPHOSv1::ResetReconstruction() | |
435 | { | |
436 | // Deleting reconstructed objects | |
437 | ||
b73f246d | 438 | if ( fEmcRecPoints ) fEmcRecPoints ->Delete(); |
5f20d3fb | 439 | if ( fPpsdRecPoints ) fPpsdRecPoints->Delete(); |
440 | if ( fTrackSegments ) fTrackSegments->Delete(); | |
b73f246d | 441 | if ( fRecParticles ) fRecParticles ->Delete(); |
5f20d3fb | 442 | |
443 | } | |
5f20d3fb | 444 | |
5f20d3fb | 445 | //____________________________________________________________________________ |
446 | ||
7587f5a5 | 447 | void AliPHOSv1::StepManager(void) |
448 | { | |
b2a60966 | 449 | // Accumulates hits as long as the track stays in a single crystal or PPSD gas Cell |
b2a60966 | 450 | |
4f5bbbd4 | 451 | Int_t relid[4] ; // (box, layer, row, column) indices |
452 | Int_t absid ; // absolute cell ID number | |
2168f43b | 453 | Float_t xyze[4]={0,0,0,0} ; // position wrt MRS and energy deposited |
4f5bbbd4 | 454 | TLorentzVector pos ; // Lorentz vector of the track current position |
fa412d9b | 455 | Int_t copy ; |
7587f5a5 | 456 | |
bea63bea | 457 | Int_t tracknumber = gAlice->CurrentTrack() ; |
fa412d9b | 458 | Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() ); |
459 | TString name = fGeom->GetName() ; | |
037cc66d | 460 | |
461 | ||
ed4205d8 | 462 | if ( name == "GPS2" || name == "MIXT" ) { // ======> CPV is a GPS' PPSD |
fa412d9b | 463 | |
b2a60966 | 464 | if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") ) // We are inside a gas cell |
7587f5a5 | 465 | { |
466 | gMC->TrackPosition(pos) ; | |
467 | xyze[0] = pos[0] ; | |
468 | xyze[1] = pos[1] ; | |
469 | xyze[2] = pos[2] ; | |
bea63bea | 470 | xyze[3] = gMC->Edep() ; |
7587f5a5 | 471 | |
b37750a6 | 472 | if ( xyze[3] != 0 ) { // there is deposited energy |
7587f5a5 | 473 | gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number |
fad3e5b9 | 474 | if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(5),"PHO1") == 0 ){ |
ed4205d8 | 475 | relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules(); |
fad3e5b9 | 476 | } |
7587f5a5 | 477 | gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number |
ed4205d8 | 478 | // 1-> fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() upper |
479 | // > fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() lower | |
7587f5a5 | 480 | gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell |
481 | gMC->CurrentVolID(relid[3]) ; // get the column number | |
482 | ||
483 | // get the absolute Id number | |
484 | ||
bea63bea | 485 | fGeom->RelToAbsNumbering(relid, absid) ; |
7587f5a5 | 486 | |
bea63bea | 487 | // add current hit to the hit list |
b37750a6 | 488 | AddHit(fIshunt, primary, tracknumber, absid, xyze); |
037cc66d | 489 | |
7587f5a5 | 490 | |
491 | } // there is deposited energy | |
fa412d9b | 492 | } // We are inside the gas of the CPV |
493 | } // GPS2 configuration | |
494 | ||
ed4205d8 | 495 | if ( name == "IHEP" || name == "MIXT" ) { // ======> CPV is a IHEP's one |
fa412d9b | 496 | |
497 | // Yuri Kharlov, 28 September 2000 | |
498 | ||
499 | if( gMC->CurrentVolID(copy) == gMC->VolId("CPVQ") && | |
b37750a6 | 500 | (gMC->IsTrackEntering() ) && |
037cc66d | 501 | gMC->TrackCharge() != 0) { |
fa412d9b | 502 | |
b37750a6 | 503 | gMC -> TrackPosition(pos); |
504 | Float_t xyzm[3], xyzd[3] ; | |
505 | Int_t i; | |
506 | for (i=0; i<3; i++) xyzm[i] = pos[i]; | |
507 | gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system | |
508 | ||
509 | Float_t xyd[3]={0,0,0} ; //local posiiton of the entering | |
510 | xyd[0] = xyzd[0]; | |
511 | xyd[1] =-xyzd[1]; | |
512 | xyd[2] =-xyzd[2]; | |
513 | ||
514 | ||
515 | // Current momentum of the hit's track in the local ref. system | |
516 | TLorentzVector pmom ; //momentum of the particle initiated hit | |
517 | gMC -> TrackMomentum(pmom); | |
518 | Float_t pm[3], pd[3]; | |
519 | for (i=0; i<3; i++) pm[i] = pmom[i]; | |
520 | gMC -> Gmtod (pm, pd, 2); // transform 3-momentum from master to daughter system | |
521 | pmom[0] = pd[0]; | |
522 | pmom[1] =-pd[1]; | |
523 | pmom[2] =-pd[2]; | |
524 | ||
037cc66d | 525 | // Digitize the current CPV hit: |
526 | ||
527 | // 1. find pad response and | |
fa412d9b | 528 | |
a3dfe79c | 529 | Int_t moduleNumber; |
530 | gMC->CurrentVolOffID(3,moduleNumber); | |
531 | moduleNumber--; | |
fa412d9b | 532 | |
fa412d9b | 533 | |
3d402178 | 534 | TClonesArray *cpvDigits = new TClonesArray("AliPHOSCPVDigit",0); // array of digits for current hit |
a3dfe79c | 535 | CPVDigitize(pmom,xyd,moduleNumber,cpvDigits); |
fa412d9b | 536 | |
537 | Float_t xmean = 0; | |
538 | Float_t zmean = 0; | |
539 | Float_t qsum = 0; | |
cd461ab8 | 540 | Int_t idigit,ndigits; |
fa412d9b | 541 | |
542 | // 2. go through the current digit list and sum digits in pads | |
543 | ||
544 | ndigits = cpvDigits->GetEntriesFast(); | |
cd461ab8 | 545 | for (idigit=0; idigit<ndigits-1; idigit++) { |
3d402178 | 546 | AliPHOSCPVDigit *cpvDigit1 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit); |
fa412d9b | 547 | Float_t x1 = cpvDigit1->GetXpad() ; |
548 | Float_t z1 = cpvDigit1->GetYpad() ; | |
549 | for (Int_t jdigit=idigit+1; jdigit<ndigits; jdigit++) { | |
3d402178 | 550 | AliPHOSCPVDigit *cpvDigit2 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(jdigit); |
fa412d9b | 551 | Float_t x2 = cpvDigit2->GetXpad() ; |
552 | Float_t z2 = cpvDigit2->GetYpad() ; | |
553 | if (x1==x2 && z1==z2) { | |
554 | Float_t qsum = cpvDigit1->GetQpad() + cpvDigit2->GetQpad() ; | |
555 | cpvDigit2->SetQpad(qsum) ; | |
556 | cpvDigits->RemoveAt(idigit) ; | |
557 | } | |
558 | } | |
559 | } | |
560 | cpvDigits->Compress() ; | |
561 | ||
562 | // 3. add digits to temporary hit list fTmpHits | |
563 | ||
564 | ndigits = cpvDigits->GetEntriesFast(); | |
cd461ab8 | 565 | for (idigit=0; idigit<ndigits; idigit++) { |
3d402178 | 566 | AliPHOSCPVDigit *cpvDigit = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit); |
a3dfe79c | 567 | relid[0] = moduleNumber + 1 ; // CPV (or PHOS) module number |
fa412d9b | 568 | relid[1] =-1 ; // means CPV |
569 | relid[2] = cpvDigit->GetXpad() ; // column number of a pad | |
570 | relid[3] = cpvDigit->GetYpad() ; // row number of a pad | |
571 | ||
572 | // get the absolute Id number | |
573 | fGeom->RelToAbsNumbering(relid, absid) ; | |
574 | ||
575 | // add current digit to the temporary hit list | |
576 | xyze[0] = 0. ; | |
577 | xyze[1] = 0. ; | |
578 | xyze[2] = 0. ; | |
579 | xyze[3] = cpvDigit->GetQpad() ; // amplitude in a pad | |
580 | primary = -1; // No need in primary for CPV | |
b37750a6 | 581 | AddHit(fIshunt, primary, tracknumber, absid, xyze); |
fa412d9b | 582 | |
583 | if (cpvDigit->GetQpad() > 0.02) { | |
584 | xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5); | |
585 | zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5); | |
586 | qsum += cpvDigit->GetQpad(); | |
587 | } | |
588 | } | |
589 | delete cpvDigits; | |
590 | } | |
591 | } // end of IHEP configuration | |
7587f5a5 | 592 | |
037cc66d | 593 | |
fa412d9b | 594 | if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal |
595 | gMC->TrackPosition(pos) ; | |
596 | xyze[0] = pos[0] ; | |
597 | xyze[1] = pos[1] ; | |
598 | xyze[2] = pos[2] ; | |
599 | xyze[3] = gMC->Edep() ; | |
ed4205d8 | 600 | |
037cc66d | 601 | |
b37750a6 | 602 | if ( xyze[3] != 0 ) { // Track is inside the crystal and deposits some energy |
ed4205d8 | 603 | |
fa412d9b | 604 | gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ; |
037cc66d | 605 | |
fad3e5b9 | 606 | if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(10),"PHO1") == 0 ) |
607 | relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules(); | |
608 | ||
fa412d9b | 609 | relid[1] = 0 ; // means PBW04 |
610 | gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module | |
611 | gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module | |
612 | ||
613 | // get the absolute Id number | |
fa412d9b | 614 | fGeom->RelToAbsNumbering(relid, absid) ; |
ed4205d8 | 615 | |
fa412d9b | 616 | // add current hit to the hit list |
b37750a6 | 617 | AddHit(fIshunt, primary,tracknumber, absid, xyze); |
037cc66d | 618 | |
ed4205d8 | 619 | |
fa412d9b | 620 | } // there is deposited energy |
621 | } // we are inside a PHOS Xtal | |
037cc66d | 622 | |
623 | ||
fa412d9b | 624 | } |
625 | ||
626 | //____________________________________________________________________________ | |
627 | void AliPHOSv1::CPVDigitize (TLorentzVector p, Float_t *zxhit, Int_t moduleNumber, TClonesArray *cpvDigits) | |
628 | { | |
629 | // ------------------------------------------------------------------------ | |
630 | // Digitize one CPV hit: | |
631 | // On input take exact 4-momentum p and position zxhit of the hit, | |
632 | // find the pad response around this hit and | |
633 | // put the amplitudes in the pads into array digits | |
634 | // | |
635 | // Author: Yuri Kharlov (after Serguei Sadovsky) | |
636 | // 2 October 2000 | |
637 | // ------------------------------------------------------------------------ | |
638 | ||
a3dfe79c | 639 | const Float_t kCelWr = fGeom->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad) |
640 | const Float_t kDetR = 0.1; // Relative energy fluctuation in track for 100 e- | |
641 | const Float_t kdEdx = 4.0; // Average energy loss in CPV; | |
642 | const Int_t kNgamz = 5; // Ionization size in Z | |
643 | const Int_t kNgamx = 9; // Ionization size in Phi | |
644 | const Float_t kNoise = 0.03; // charge noise in one pad | |
fa412d9b | 645 | |
646 | Float_t rnor1,rnor2; | |
647 | ||
648 | // Just a reminder on axes notation in the CPV module: | |
649 | // axis Z goes along the beam | |
650 | // axis X goes across the beam in the module plane | |
651 | // axis Y is a normal to the module plane showing from the IP | |
652 | ||
653 | Float_t hitX = zxhit[0]; | |
654 | Float_t hitZ =-zxhit[1]; | |
655 | Float_t pX = p.Px(); | |
656 | Float_t pZ =-p.Pz(); | |
657 | Float_t pNorm = p.Py(); | |
a3dfe79c | 658 | Float_t eloss = kdEdx; |
3d402178 | 659 | |
7eb9d12d | 660 | // cout << "CPVDigitize: YVK : "<<hitX<<" "<<hitZ<<" | "<<pX<<" "<<pZ<<" "<<pNorm<<endl; |
661 | ||
fa412d9b | 662 | Float_t dZY = pZ/pNorm * fGeom->GetCPVGasThickness(); |
663 | Float_t dXY = pX/pNorm * fGeom->GetCPVGasThickness(); | |
664 | gRandom->Rannor(rnor1,rnor2); | |
a3dfe79c | 665 | eloss *= (1 + kDetR*rnor1) * |
666 | TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(fGeom->GetCPVGasThickness(),2))); | |
fa412d9b | 667 | Float_t zhit1 = hitZ + fGeom->GetCPVActiveSize(1)/2 - dZY/2; |
668 | Float_t xhit1 = hitX + fGeom->GetCPVActiveSize(0)/2 - dXY/2; | |
669 | Float_t zhit2 = zhit1 + dZY; | |
670 | Float_t xhit2 = xhit1 + dXY; | |
671 | ||
a3dfe79c | 672 | Int_t iwht1 = (Int_t) (xhit1 / kCelWr); // wire (x) coordinate "in" |
673 | Int_t iwht2 = (Int_t) (xhit2 / kCelWr); // wire (x) coordinate "out" | |
fa412d9b | 674 | |
675 | Int_t nIter; | |
676 | Float_t zxe[3][5]; | |
677 | if (iwht1==iwht2) { // incline 1-wire hit | |
678 | nIter = 2; | |
679 | zxe[0][0] = (zhit1 + zhit2 - dZY*0.57735) / 2; | |
a3dfe79c | 680 | zxe[1][0] = (iwht1 + 0.5) * kCelWr; |
681 | zxe[2][0] = eloss/2; | |
fa412d9b | 682 | zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2; |
a3dfe79c | 683 | zxe[1][1] = (iwht1 + 0.5) * kCelWr; |
684 | zxe[2][1] = eloss/2; | |
fa412d9b | 685 | } |
686 | else if (TMath::Abs(iwht1-iwht2) != 1) { // incline 3-wire hit | |
687 | nIter = 3; | |
688 | Int_t iwht3 = (iwht1 + iwht2) / 2; | |
a3dfe79c | 689 | Float_t xwht1 = (iwht1 + 0.5) * kCelWr; // wire 1 |
690 | Float_t xwht2 = (iwht2 + 0.5) * kCelWr; // wire 2 | |
691 | Float_t xwht3 = (iwht3 + 0.5) * kCelWr; // wire 3 | |
fa412d9b | 692 | Float_t xwr13 = (xwht1 + xwht3) / 2; // center 13 |
693 | Float_t xwr23 = (xwht2 + xwht3) / 2; // center 23 | |
694 | Float_t dxw1 = xhit1 - xwr13; | |
695 | Float_t dxw2 = xhit2 - xwr23; | |
a3dfe79c | 696 | Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); |
697 | Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); | |
698 | Float_t egm3 = kCelWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); | |
fa412d9b | 699 | zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2; |
700 | zxe[1][0] = xwht1; | |
a3dfe79c | 701 | zxe[2][0] = eloss * egm1; |
fa412d9b | 702 | zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2; |
703 | zxe[1][1] = xwht2; | |
a3dfe79c | 704 | zxe[2][1] = eloss * egm2; |
fa412d9b | 705 | zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1; |
706 | zxe[1][2] = xwht3; | |
a3dfe79c | 707 | zxe[2][2] = eloss * egm3; |
fa412d9b | 708 | } |
709 | else { // incline 2-wire hit | |
710 | nIter = 2; | |
a3dfe79c | 711 | Float_t xwht1 = (iwht1 + 0.5) * kCelWr; |
712 | Float_t xwht2 = (iwht2 + 0.5) * kCelWr; | |
fa412d9b | 713 | Float_t xwr12 = (xwht1 + xwht2) / 2; |
714 | Float_t dxw1 = xhit1 - xwr12; | |
715 | Float_t dxw2 = xhit2 - xwr12; | |
716 | Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); | |
717 | Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); | |
718 | zxe[0][0] = (zhit1 + zhit2 - dZY*egm1) / 2; | |
719 | zxe[1][0] = xwht1; | |
a3dfe79c | 720 | zxe[2][0] = eloss * egm1; |
fa412d9b | 721 | zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2; |
722 | zxe[1][1] = xwht2; | |
a3dfe79c | 723 | zxe[2][1] = eloss * egm2; |
fa412d9b | 724 | } |
bea63bea | 725 | |
fa412d9b | 726 | // Finite size of ionization region |
727 | ||
ed4205d8 | 728 | Int_t nCellZ = fGeom->GetNumberOfCPVPadsZ(); |
729 | Int_t nCellX = fGeom->GetNumberOfCPVPadsPhi(); | |
a3dfe79c | 730 | Int_t nz3 = (kNgamz+1)/2; |
731 | Int_t nx3 = (kNgamx+1)/2; | |
732 | cpvDigits->Expand(nIter*kNgamx*kNgamz); | |
fa412d9b | 733 | TClonesArray &ldigits = *(TClonesArray *)cpvDigits; |
734 | ||
735 | for (Int_t iter=0; iter<nIter; iter++) { | |
736 | ||
737 | Float_t zhit = zxe[0][iter]; | |
738 | Float_t xhit = zxe[1][iter]; | |
739 | Float_t qhit = zxe[2][iter]; | |
740 | Float_t zcell = zhit / fGeom->GetPadSizeZ(); | |
741 | Float_t xcell = xhit / fGeom->GetPadSizePhi(); | |
742 | if ( zcell<=0 || xcell<=0 || | |
743 | zcell>=nCellZ || xcell>=nCellX) return; | |
744 | Int_t izcell = (Int_t) zcell; | |
745 | Int_t ixcell = (Int_t) xcell; | |
746 | Float_t zc = zcell - izcell - 0.5; | |
747 | Float_t xc = xcell - ixcell - 0.5; | |
a3dfe79c | 748 | for (Int_t iz=1; iz<=kNgamz; iz++) { |
fa412d9b | 749 | Int_t kzg = izcell + iz - nz3; |
750 | if (kzg<=0 || kzg>nCellZ) continue; | |
751 | Float_t zg = (Float_t)(iz-nz3) - zc; | |
a3dfe79c | 752 | for (Int_t ix=1; ix<=kNgamx; ix++) { |
fa412d9b | 753 | Int_t kxg = ixcell + ix - nx3; |
754 | if (kxg<=0 || kxg>nCellX) continue; | |
755 | Float_t xg = (Float_t)(ix-nx3) - xc; | |
756 | ||
757 | // Now calculate pad response | |
758 | Float_t qpad = CPVPadResponseFunction(qhit,zg,xg); | |
a3dfe79c | 759 | qpad += kNoise*rnor2; |
fa412d9b | 760 | if (qpad<0) continue; |
761 | ||
762 | // Fill the array with pad response ID and amplitude | |
3d402178 | 763 | new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad); |
fa412d9b | 764 | } |
fa412d9b | 765 | } |
fa412d9b | 766 | } |
767 | } | |
768 | ||
769 | //____________________________________________________________________________ | |
770 | Float_t AliPHOSv1::CPVPadResponseFunction(Float_t qhit, Float_t zhit, Float_t xhit) { | |
771 | // ------------------------------------------------------------------------ | |
772 | // Calculate the amplitude in one CPV pad using the | |
773 | // cumulative pad response function | |
774 | // Author: Yuri Kharlov (after Serguei Sadovski) | |
775 | // 3 October 2000 | |
776 | // ------------------------------------------------------------------------ | |
777 | ||
778 | Double_t dz = fGeom->GetPadSizeZ() / 2; | |
779 | Double_t dx = fGeom->GetPadSizePhi() / 2; | |
780 | Double_t z = zhit * fGeom->GetPadSizeZ(); | |
781 | Double_t x = xhit * fGeom->GetPadSizePhi(); | |
782 | Double_t amplitude = qhit * | |
783 | (CPVCumulPadResponse(z+dz,x+dx) - CPVCumulPadResponse(z+dz,x-dx) - | |
784 | CPVCumulPadResponse(z-dz,x+dx) + CPVCumulPadResponse(z-dz,x-dx)); | |
785 | return (Float_t)amplitude; | |
7587f5a5 | 786 | } |
787 | ||
fa412d9b | 788 | //____________________________________________________________________________ |
789 | Double_t AliPHOSv1::CPVCumulPadResponse(Double_t x, Double_t y) { | |
790 | // ------------------------------------------------------------------------ | |
791 | // Cumulative pad response function | |
792 | // It includes several terms from the CF decomposition in electrostatics | |
793 | // Note: this cumulative function is wrong since omits some terms | |
794 | // but the cell amplitude obtained with it is correct because | |
795 | // these omitting terms cancel | |
796 | // Author: Yuri Kharlov (after Serguei Sadovski) | |
797 | // 3 October 2000 | |
798 | // ------------------------------------------------------------------------ | |
799 | ||
a3dfe79c | 800 | const Double_t kA=1.0; |
801 | const Double_t kB=0.7; | |
fa412d9b | 802 | |
803 | Double_t r2 = x*x + y*y; | |
804 | Double_t xy = x*y; | |
805 | Double_t cumulPRF = 0; | |
806 | for (Int_t i=0; i<=4; i++) { | |
a3dfe79c | 807 | Double_t b1 = (2*i + 1) * kB; |
fa412d9b | 808 | cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) ); |
809 | } | |
a3dfe79c | 810 | cumulPRF *= kA/(2*TMath::Pi()); |
fa412d9b | 811 | return cumulPRF; |
812 | } | |
7eb9d12d | 813 |