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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" |
7587f5a5 | 54 | #include "AliRun.h" |
55 | #include "AliConst.h" | |
94de3818 | 56 | #include "AliMC.h" |
7587f5a5 | 57 | |
58 | ClassImp(AliPHOSv1) | |
59 | ||
bea63bea | 60 | //____________________________________________________________________________ |
02ab1add | 61 | AliPHOSv1::AliPHOSv1(): |
62 | AliPHOSv0() | |
bea63bea | 63 | { |
5f20d3fb | 64 | // ctor |
ed4205d8 | 65 | |
66 | fReconstructioner = 0; | |
67 | fTrackSegmentMaker = 0; | |
037cc66d | 68 | |
bea63bea | 69 | } |
70 | ||
7587f5a5 | 71 | //____________________________________________________________________________ |
72 | AliPHOSv1::AliPHOSv1(const char *name, const char *title): | |
e04976bd | 73 | AliPHOSv0(name,title) |
7587f5a5 | 74 | { |
5f20d3fb | 75 | // ctor : title is used to identify the layout |
fa412d9b | 76 | // GPS2 = 5 modules (EMC + PPSD) |
77 | // IHEP = 5 modules (EMC + CPV ) | |
ed4205d8 | 78 | // MIXT = 4 modules (EMC + CPV ) and 1 module (EMC + PPSD) |
5f20d3fb | 79 | // |
ed4205d8 | 80 | // We store hits : |
5f20d3fb | 81 | // - fHits (the "normal" one), which retains the hits associated with |
82 | // the current primary particle being tracked | |
83 | // (this array is reset after each primary has been tracked). | |
84 | // | |
fa412d9b | 85 | |
5f20d3fb | 86 | fPinElectronicNoise = 0.010 ; |
037cc66d | 87 | fDigitThreshold = 0.01 ; // 1 GeV |
88 | fDigitizeA= 0. ; | |
89 | fDigitizeB = 10000000. ; | |
90 | ||
5f20d3fb | 91 | |
92 | // We do not want to save in TreeH the raw hits | |
93 | // But save the cumulated hits instead (need to create the branch myself) | |
94 | // It is put in the Digit Tree because the TreeH is filled after each primary | |
fa412d9b | 95 | // and the TreeD at the end of the event (branch is set in FinishEvent() ). |
5f20d3fb | 96 | |
ed4205d8 | 97 | fHits= new TClonesArray("AliPHOSHit",1000) ; |
5f20d3fb | 98 | |
ed4205d8 | 99 | fNhits = 0 ; |
5f20d3fb | 100 | |
ed4205d8 | 101 | fReconstructioner = 0; |
102 | fTrackSegmentMaker = 0; | |
5f20d3fb | 103 | |
5f20d3fb | 104 | fIshunt = 1 ; // All hits are associated with primary particles |
fa412d9b | 105 | |
5f20d3fb | 106 | } |
107 | ||
108 | //____________________________________________________________________________ | |
109 | AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title): | |
110 | AliPHOSv0(name,title) | |
111 | { | |
112 | // ctor : title is used to identify the layout | |
113 | // GPS2 = 5 modules (EMC + PPSD) | |
5f20d3fb | 114 | |
115 | fPinElectronicNoise = 0.010 ; | |
116 | ||
117 | // We do not want to save in TreeH the raw hits | |
5f20d3fb | 118 | |
ed4205d8 | 119 | fDigits = 0 ; |
120 | fHits= new TClonesArray("AliPHOSHit",1000) ; | |
b73f246d | 121 | |
ed4205d8 | 122 | fNhits = 0 ; |
5f20d3fb | 123 | |
124 | fIshunt = 1 ; // All hits are associated with primary particles | |
125 | ||
126 | // gets an instance of the geometry parameters class | |
127 | fGeom = AliPHOSGeometry::GetInstance(title, "") ; | |
128 | ||
129 | if (fGeom->IsInitialized() ) | |
88bdfa12 | 130 | cout << "AliPHOS" << Version() << " : PHOS geometry intialized for " << fGeom->GetName() << endl ; |
5f20d3fb | 131 | else |
fc879520 | 132 | cout << "AliPHOS" << Version() << " : PHOS geometry initialization failed !" << endl ; |
5f20d3fb | 133 | |
134 | // Defining the PHOS Reconstructioner | |
135 | ||
136 | fReconstructioner = Reconstructioner ; | |
137 | ||
7587f5a5 | 138 | } |
b2a60966 | 139 | |
7587f5a5 | 140 | //____________________________________________________________________________ |
bea63bea | 141 | AliPHOSv1::~AliPHOSv1() |
b2a60966 | 142 | { |
bea63bea | 143 | // dtor |
5f20d3fb | 144 | |
ed4205d8 | 145 | if ( fHits) { |
146 | fHits->Delete() ; | |
147 | delete fHits ; | |
148 | fHits = 0 ; | |
8dfa469d | 149 | } |
5f20d3fb | 150 | |
037cc66d | 151 | if ( fSDigits) { |
152 | fSDigits->Delete() ; | |
153 | delete fSDigits ; | |
154 | fSDigits = 0 ; | |
155 | } | |
156 | ||
ed4205d8 | 157 | if ( fDigits) { |
158 | fDigits->Delete() ; | |
159 | delete fDigits ; | |
160 | fDigits = 0 ; | |
161 | } | |
5f20d3fb | 162 | |
ed4205d8 | 163 | if ( fEmcRecPoints ) { |
164 | fEmcRecPoints->Delete() ; | |
165 | delete fEmcRecPoints ; | |
166 | fEmcRecPoints = 0 ; | |
167 | } | |
168 | ||
169 | if ( fPpsdRecPoints ) { | |
170 | fPpsdRecPoints->Delete() ; | |
171 | delete fPpsdRecPoints ; | |
172 | fPpsdRecPoints = 0 ; | |
173 | } | |
fad3e5b9 | 174 | |
ed4205d8 | 175 | if ( fTrackSegments ) { |
176 | fTrackSegments->Delete() ; | |
177 | delete fTrackSegments ; | |
178 | fTrackSegments = 0 ; | |
179 | } | |
180 | ||
7587f5a5 | 181 | } |
182 | ||
7587f5a5 | 183 | //____________________________________________________________________________ |
037cc66d | 184 | void AliPHOSv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t Id, Float_t * hits, Int_t trackpid, TLorentzVector p, Float_t * lpos) |
bea63bea | 185 | { |
186 | // Add a hit to the hit list. | |
5f20d3fb | 187 | // A PHOS hit is the sum of all hits in a single crystal |
188 | // or in a single PPSD gas cell | |
bea63bea | 189 | |
5f20d3fb | 190 | Int_t hitCounter ; |
bea63bea | 191 | AliPHOSHit *newHit ; |
5f20d3fb | 192 | AliPHOSHit *curHit ; |
193 | Bool_t deja = kFALSE ; | |
bea63bea | 194 | |
037cc66d | 195 | newHit = new AliPHOSHit(shunt, primary, tracknumber, Id, hits, trackpid, p, lpos) ; |
bea63bea | 196 | |
7854a24a | 197 | for ( hitCounter = fNhits-1 ; hitCounter >= 0 && !deja ; hitCounter-- ) { |
ed4205d8 | 198 | curHit = (AliPHOSHit*) (*fHits)[hitCounter] ; |
199 | if( *curHit == *newHit ) { | |
200 | *curHit = *curHit + *newHit ; | |
201 | deja = kTRUE ; | |
5f20d3fb | 202 | } |
203 | } | |
204 | ||
205 | if ( !deja ) { | |
ed4205d8 | 206 | new((*fHits)[fNhits]) AliPHOSHit(*newHit) ; |
207 | fNhits++ ; | |
5f20d3fb | 208 | } |
209 | ||
bea63bea | 210 | delete newHit; |
bea63bea | 211 | } |
212 | ||
ed4205d8 | 213 | //____________________________________________________________________________ |
037cc66d | 214 | void AliPHOSv1::Hits2SDigits(){ |
215 | //Collects all hits in the same active volume into digit | |
ed4205d8 | 216 | |
bea63bea | 217 | Int_t i ; |
bea63bea | 218 | Int_t j ; |
fa412d9b | 219 | AliPHOSHit * hit ; |
bea63bea | 220 | AliPHOSDigit * newdigit ; |
221 | AliPHOSDigit * curdigit ; | |
222 | Bool_t deja = kFALSE ; | |
223 | ||
037cc66d | 224 | |
ed4205d8 | 225 | Int_t itrack ; |
037cc66d | 226 | for (itrack=0; itrack<gAlice->GetNtrack(); itrack++){ |
227 | ||
ed4205d8 | 228 | //=========== Get the Hits Tree for the Primary track itrack |
229 | gAlice->ResetHits(); | |
230 | gAlice->TreeH()->GetEvent(itrack); | |
231 | ||
037cc66d | 232 | |
ed4205d8 | 233 | for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { |
234 | hit = (AliPHOSHit*)fHits->At(i) ; | |
235 | ||
236 | // Assign primary number only if contribution is significant | |
237 | if( hit->GetEnergy() > fDigitThreshold) | |
238 | newdigit = new AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ; | |
239 | else | |
240 | newdigit = new AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ; | |
241 | deja =kFALSE ; | |
242 | ||
037cc66d | 243 | for ( j = 0 ; j < fnSdigits ; j++) { |
244 | curdigit = (AliPHOSDigit*) fSDigits->At(j) ; | |
ed4205d8 | 245 | if ( *curdigit == *newdigit) { |
246 | *curdigit = *curdigit + *newdigit ; | |
247 | deja = kTRUE ; | |
248 | } | |
bea63bea | 249 | } |
bea63bea | 250 | |
ed4205d8 | 251 | if ( !deja ) { |
037cc66d | 252 | new((*fSDigits)[fnSdigits]) AliPHOSDigit(* newdigit) ; |
253 | fnSdigits++ ; | |
ed4205d8 | 254 | } |
255 | ||
256 | delete newdigit ; | |
257 | } | |
258 | ||
259 | } // loop over tracks | |
037cc66d | 260 | |
261 | fSDigits->Sort() ; | |
262 | ||
263 | fnSdigits = fSDigits->GetEntries() ; | |
264 | fSDigits->Expand(fnSdigits) ; | |
265 | ||
266 | for (i = 0 ; i < fnSdigits ; i++) { | |
267 | AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(i) ; | |
268 | digit->SetIndexInList(i) ; | |
269 | } | |
270 | ||
271 | gAlice->TreeS()->Fill() ; | |
550bee17 | 272 | gAlice->TreeS()->Write(0,TObject::kOverwrite) ; |
273 | ||
037cc66d | 274 | |
275 | } | |
276 | //____________________________________________________________________________ | |
277 | void AliPHOSv1::SDigits2Digits(){ | |
278 | //Adds noise to the summable digits and removes everething below thresholds | |
279 | //Note, that sDigits should be SORTED in accordance with abs ID. | |
280 | ||
281 | ||
282 | gAlice->TreeS()->GetEvent(0) ; | |
037cc66d | 283 | |
ad8cfaf4 | 284 | // First calculate noise induced by the PIN diode of the PbWO crystals |
037cc66d | 285 | Int_t iCurSDigit = 0 ; |
ad8cfaf4 | 286 | |
037cc66d | 287 | //we assume, that there is al least one EMC digit... |
550bee17 | 288 | if(fSDigits->GetEntries() == 0) { |
289 | cout << "PHOS::SDigits2Digits> No SDigits !!! Do not produce Digits " << endl ; | |
290 | return ; | |
291 | } | |
037cc66d | 292 | |
550bee17 | 293 | Int_t idCurSDigit = ((AliPHOSDigit *)fSDigits->At(0))->GetId() ; |
037cc66d | 294 | |
295 | Int_t absID ; | |
296 | for(absID = 1; absID < fGeom->GetNModules()*fGeom->GetNPhi()*fGeom->GetNZ(); absID++){ | |
037cc66d | 297 | Float_t noise = gRandom->Gaus(0., fPinElectronicNoise) ; |
298 | if(absID < idCurSDigit ){ | |
037cc66d | 299 | if(noise >fDigitThreshold ){ |
037cc66d | 300 | new((*fDigits)[fNdigits]) AliPHOSDigit( -1,absID,Digitize(noise) ) ; |
037cc66d | 301 | fNdigits++ ; |
302 | } | |
303 | } | |
304 | else{ //add noise and may be remove the true hit | |
037cc66d | 305 | Float_t signal = noise + Calibrate(((AliPHOSDigit *)fSDigits->At(iCurSDigit))->GetAmp()) ; |
037cc66d | 306 | if( signal >fDigitThreshold ){ |
037cc66d | 307 | AliPHOSDigit * digit = (AliPHOSDigit*) fSDigits->At(iCurSDigit) ; |
308 | new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ; | |
309 | ((AliPHOSDigit *)fDigits->At(fNdigits))->SetAmp(Digitize(signal)); | |
037cc66d | 310 | fNdigits++ ; |
311 | } | |
312 | ||
313 | if(iCurSDigit < fSDigits->GetEntries()-1){ | |
314 | iCurSDigit++ ; | |
315 | idCurSDigit = ((AliPHOSDigit*)fSDigits->At(iCurSDigit))->GetId() ; | |
316 | } | |
317 | else | |
318 | idCurSDigit = 10000000; //no real hits left | |
319 | } | |
ed4205d8 | 320 | |
037cc66d | 321 | } |
322 | ||
323 | //remove PPSD/CPV digits below thresholds | |
324 | Int_t idigit ; | |
325 | for(idigit = iCurSDigit; idigit < fSDigits->GetEntries() ; idigit++){ //loop over CPV/PPSD digits | |
326 | ||
327 | AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(idigit) ; | |
328 | Float_t ene = Calibrate(digit->GetAmp()) ; | |
329 | ||
330 | Int_t relid[4] ; | |
331 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
332 | if ( relid[0] > fGeom->GetNCPVModules() ){ //ppsd | |
333 | if ( ( (relid[1] > 0) && (ene > fPpsdEnergyThreshold)) || //PPSD digit | |
334 | ( (relid[1] < 0) && (ene > fCpvEnergyThreshold ) ) ) //CPV digit | |
335 | new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ; | |
336 | fNdigits++ ; | |
bea63bea | 337 | } |
037cc66d | 338 | } |
ed4205d8 | 339 | |
bea63bea | 340 | fDigits->Compress() ; |
ed4205d8 | 341 | |
342 | fNdigits = fDigits->GetEntries() ; | |
343 | fDigits->Expand(fNdigits) ; | |
bea63bea | 344 | |
037cc66d | 345 | Int_t i ; |
bea63bea | 346 | for (i = 0 ; i < fNdigits ; i++) { |
037cc66d | 347 | AliPHOSDigit * digit = (AliPHOSDigit *) fDigits->At(i) ; |
348 | digit->SetIndexInList(i) ; | |
bea63bea | 349 | } |
fa412d9b | 350 | |
ed4205d8 | 351 | gAlice->TreeD()->Fill() ; |
5f20d3fb | 352 | |
ed4205d8 | 353 | gAlice->TreeD()->Write(0,TObject::kOverwrite) ; |
354 | ||
355 | } | |
2ab0c725 | 356 | |
5f20d3fb | 357 | //___________________________________________________________________________ |
2ab0c725 | 358 | void AliPHOSv1::MakeBranch(Option_t* opt, char *file) |
037cc66d | 359 | { |
360 | ||
361 | ||
362 | char *cH ; | |
5f20d3fb | 363 | // Create new branche in the current Root Tree in the digit Tree |
5f20d3fb | 364 | AliDetector::MakeBranch(opt) ; |
037cc66d | 365 | |
366 | ||
367 | cH = strstr(opt,"S"); | |
368 | //Create a branch for SDigits | |
369 | if( cH ){ | |
370 | char branchname[20]; | |
371 | sprintf(branchname,"%s",GetName()); | |
372 | if(fSDigits) | |
373 | fSDigits->Clear(); | |
374 | else | |
375 | fSDigits = new TClonesArray("AliPHOSDigit",1000); | |
ad8cfaf4 | 376 | |
037cc66d | 377 | fnSdigits = 0 ; |
037cc66d | 378 | gAlice->MakeBranchInTree(gAlice->TreeS(),branchname,&fSDigits,fBufferSize,file); |
fa412d9b | 379 | } |
ed4205d8 | 380 | |
037cc66d | 381 | cH = strstr(opt,"D"); |
382 | //Create a branch for Digits | |
383 | if( cH ){ | |
384 | char branchname[20]; | |
385 | sprintf(branchname,"%s",GetName()); | |
ad8cfaf4 | 386 | |
387 | if(fDigits) | |
037cc66d | 388 | fDigits->Clear(); |
389 | else | |
390 | fDigits = new TClonesArray("AliPHOSDigit",1000); | |
391 | fNdigits = 0 ; | |
392 | ||
ad8cfaf4 | 393 | gAlice->MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,fBufferSize,file); |
037cc66d | 394 | } |
395 | ||
396 | cH = strstr(opt,"R"); | |
397 | //Create a branch for Reconstruction | |
398 | if( cH ){ | |
399 | char branchname[20]; | |
400 | ||
401 | Int_t splitlevel = 0 ; | |
ad8cfaf4 | 402 | |
403 | if(fEmcRecPoints) | |
404 | fEmcRecPoints->Delete() ; | |
405 | else | |
406 | fEmcRecPoints = new TObjArray(100) ; | |
037cc66d | 407 | |
408 | if ( fEmcRecPoints && gAlice->TreeR() ) { | |
409 | sprintf(branchname,"%sEmcRP",GetName()) ; | |
410 | gAlice->TreeR()->Branch(branchname, "TObjArray", &fEmcRecPoints, fBufferSize, splitlevel) ; | |
411 | } | |
412 | ||
ad8cfaf4 | 413 | if(fPpsdRecPoints) |
414 | fPpsdRecPoints->Delete() ; | |
415 | else | |
416 | fPpsdRecPoints = new TObjArray(100) ; | |
037cc66d | 417 | |
418 | if ( fPpsdRecPoints && gAlice->TreeR() ) { | |
419 | sprintf(branchname,"%sPpsdRP",GetName()) ; | |
420 | gAlice->TreeR()->Branch(branchname, "TObjArray", &fPpsdRecPoints, fBufferSize, splitlevel) ; | |
421 | } | |
422 | ||
ad8cfaf4 | 423 | if(fTrackSegments) |
424 | fTrackSegments->Delete() ; | |
425 | else | |
426 | fTrackSegments = new TClonesArray("AliPHOSTrackSegment",100) ; | |
037cc66d | 427 | |
428 | if ( fTrackSegments && gAlice->TreeR() ) { | |
429 | sprintf(branchname,"%sTS",GetName()) ; | |
430 | gAlice->TreeR()->Branch(branchname, &fTrackSegments, fBufferSize) ; | |
431 | } | |
432 | ||
ad8cfaf4 | 433 | if(fRecParticles) |
434 | fRecParticles->Delete() ; | |
435 | else | |
436 | fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ; | |
037cc66d | 437 | |
438 | if ( fRecParticles && gAlice->TreeR() ) { | |
439 | sprintf(branchname,"%sRP",GetName()) ; | |
440 | gAlice->TreeR()->Branch(branchname, &fRecParticles, fBufferSize) ; | |
441 | } | |
442 | ||
443 | } | |
444 | ||
bea63bea | 445 | } |
446 | ||
5f20d3fb | 447 | //_____________________________________________________________________________ |
448 | void AliPHOSv1::Reconstruction(AliPHOSReconstructioner * Reconstructioner) | |
449 | { | |
450 | // 1. Reinitializes the existing RecPoint, TrackSegment, and RecParticles Lists and | |
451 | // 2. Creates TreeR with a branch for each list | |
452 | // 3. Steers the reconstruction processes | |
453 | // 4. Saves the 3 lists in TreeR | |
454 | // 5. Write the Tree to File | |
455 | ||
456 | fReconstructioner = Reconstructioner ; | |
037cc66d | 457 | |
5f20d3fb | 458 | // 1. |
459 | ||
460 | // gAlice->MakeTree("R") ; | |
5f20d3fb | 461 | |
037cc66d | 462 | MakeBranch("R") ; |
5f20d3fb | 463 | |
464 | // 3. | |
b73f246d | 465 | |
fad3e5b9 | 466 | fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles); |
b73f246d | 467 | |
fad3e5b9 | 468 | printf("Reconstruction: %d %d %d %d\n", |
469 | fEmcRecPoints->GetEntries(),fPpsdRecPoints->GetEntries(), | |
b73f246d | 470 | fTrackSegments->GetEntries(),fRecParticles->GetEntries()); |
5f20d3fb | 471 | |
472 | // 4. Expand or Shrink the arrays to the proper size | |
473 | ||
474 | Int_t size ; | |
475 | ||
476 | size = fEmcRecPoints->GetEntries() ; | |
477 | fEmcRecPoints->Expand(size) ; | |
ed4205d8 | 478 | |
5f20d3fb | 479 | size = fPpsdRecPoints->GetEntries() ; |
480 | fPpsdRecPoints->Expand(size) ; | |
481 | ||
482 | size = fTrackSegments->GetEntries() ; | |
483 | fTrackSegments->Expand(size) ; | |
484 | ||
485 | size = fRecParticles->GetEntries() ; | |
486 | fRecParticles->Expand(size) ; | |
487 | ||
488 | gAlice->TreeR()->Fill() ; | |
5f20d3fb | 489 | // 5. |
490 | ||
4a2ca5e9 | 491 | gAlice->TreeR()->Write(0,TObject::kOverwrite) ; |
5f20d3fb | 492 | |
493 | // Deleting reconstructed objects | |
494 | ResetReconstruction(); | |
495 | ||
496 | } | |
497 | ||
5f20d3fb | 498 | //____________________________________________________________________________ |
499 | void AliPHOSv1::ResetReconstruction() | |
500 | { | |
501 | // Deleting reconstructed objects | |
502 | ||
b73f246d | 503 | if ( fEmcRecPoints ) fEmcRecPoints ->Delete(); |
5f20d3fb | 504 | if ( fPpsdRecPoints ) fPpsdRecPoints->Delete(); |
505 | if ( fTrackSegments ) fTrackSegments->Delete(); | |
b73f246d | 506 | if ( fRecParticles ) fRecParticles ->Delete(); |
5f20d3fb | 507 | |
508 | } | |
5f20d3fb | 509 | |
5f20d3fb | 510 | //____________________________________________________________________________ |
511 | ||
7587f5a5 | 512 | void AliPHOSv1::StepManager(void) |
513 | { | |
b2a60966 | 514 | // Accumulates hits as long as the track stays in a single crystal or PPSD gas Cell |
b2a60966 | 515 | |
4f5bbbd4 | 516 | Int_t relid[4] ; // (box, layer, row, column) indices |
517 | Int_t absid ; // absolute cell ID number | |
2168f43b | 518 | Float_t xyze[4]={0,0,0,0} ; // position wrt MRS and energy deposited |
4f5bbbd4 | 519 | TLorentzVector pos ; // Lorentz vector of the track current position |
5c617c31 | 520 | TLorentzVector pmom ; //momentum of the particle initiated hit |
4f5bbbd4 | 521 | Float_t xyd[3]={0,0,0} ; //local posiiton of the entering |
522 | Bool_t entered = kFALSE ; | |
fa412d9b | 523 | Int_t copy ; |
7587f5a5 | 524 | |
bea63bea | 525 | Int_t tracknumber = gAlice->CurrentTrack() ; |
fa412d9b | 526 | Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() ); |
527 | TString name = fGeom->GetName() ; | |
037cc66d | 528 | Int_t trackpid = 0 ; |
529 | ||
530 | if( gMC->IsTrackEntering() ){ // create hit with position and momentum of new particle, | |
531 | // but may be without energy deposition | |
532 | ||
533 | // Current position of the hit in the local ref. system | |
534 | gMC -> TrackPosition(pos); | |
535 | Float_t xyzm[3], xyzd[3] ; | |
536 | Int_t i; | |
537 | for (i=0; i<3; i++) xyzm[i] = pos[i]; | |
538 | gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system | |
539 | xyd[0] = xyzd[0]; | |
7854a24a | 540 | xyd[1] =-xyzd[1]; |
541 | xyd[2] =-xyzd[2]; | |
542 | ||
037cc66d | 543 | |
544 | // Current momentum of the hit's track in the local ref. system | |
545 | gMC -> TrackMomentum(pmom); | |
546 | Float_t pm[3], pd[3]; | |
547 | for (i=0; i<3; i++) pm[i] = pmom[i]; | |
548 | gMC -> Gmtod (pm, pd, 2); // transform 3-momentum from master to daughter system | |
549 | pmom[0] = pd[0]; | |
550 | pmom[1] =-pd[1]; | |
551 | pmom[2] =-pd[2]; | |
552 | ||
553 | trackpid = gMC->TrackPid(); | |
554 | entered = kTRUE ; // Mark to create hit even withou energy deposition | |
555 | ||
556 | } | |
557 | ||
558 | ||
ed4205d8 | 559 | if ( name == "GPS2" || name == "MIXT" ) { // ======> CPV is a GPS' PPSD |
fa412d9b | 560 | |
b2a60966 | 561 | if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") ) // We are inside a gas cell |
7587f5a5 | 562 | { |
563 | gMC->TrackPosition(pos) ; | |
564 | xyze[0] = pos[0] ; | |
565 | xyze[1] = pos[1] ; | |
566 | xyze[2] = pos[2] ; | |
bea63bea | 567 | xyze[3] = gMC->Edep() ; |
7587f5a5 | 568 | |
037cc66d | 569 | if ( (xyze[3] != 0) || entered ) { // there is deposited energy or new particle entering PPSD |
7587f5a5 | 570 | gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number |
fad3e5b9 | 571 | if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(5),"PHO1") == 0 ){ |
ed4205d8 | 572 | relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules(); |
fad3e5b9 | 573 | } |
7587f5a5 | 574 | gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number |
ed4205d8 | 575 | // 1-> fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() upper |
576 | // > fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() lower | |
7587f5a5 | 577 | gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell |
578 | gMC->CurrentVolID(relid[3]) ; // get the column number | |
579 | ||
580 | // get the absolute Id number | |
581 | ||
bea63bea | 582 | fGeom->RelToAbsNumbering(relid, absid) ; |
7587f5a5 | 583 | |
bea63bea | 584 | // add current hit to the hit list |
037cc66d | 585 | AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd); |
586 | ||
7587f5a5 | 587 | |
588 | } // there is deposited energy | |
fa412d9b | 589 | } // We are inside the gas of the CPV |
590 | } // GPS2 configuration | |
591 | ||
ed4205d8 | 592 | if ( name == "IHEP" || name == "MIXT" ) { // ======> CPV is a IHEP's one |
fa412d9b | 593 | |
594 | // Yuri Kharlov, 28 September 2000 | |
595 | ||
596 | if( gMC->CurrentVolID(copy) == gMC->VolId("CPVQ") && | |
037cc66d | 597 | entered && |
598 | gMC->TrackCharge() != 0) { | |
fa412d9b | 599 | |
037cc66d | 600 | // Digitize the current CPV hit: |
601 | ||
602 | // 1. find pad response and | |
fa412d9b | 603 | |
a3dfe79c | 604 | Int_t moduleNumber; |
605 | gMC->CurrentVolOffID(3,moduleNumber); | |
606 | moduleNumber--; | |
fa412d9b | 607 | |
fa412d9b | 608 | |
3d402178 | 609 | TClonesArray *cpvDigits = new TClonesArray("AliPHOSCPVDigit",0); // array of digits for current hit |
a3dfe79c | 610 | CPVDigitize(pmom,xyd,moduleNumber,cpvDigits); |
fa412d9b | 611 | |
612 | Float_t xmean = 0; | |
613 | Float_t zmean = 0; | |
614 | Float_t qsum = 0; | |
cd461ab8 | 615 | Int_t idigit,ndigits; |
fa412d9b | 616 | |
617 | // 2. go through the current digit list and sum digits in pads | |
618 | ||
619 | ndigits = cpvDigits->GetEntriesFast(); | |
cd461ab8 | 620 | for (idigit=0; idigit<ndigits-1; idigit++) { |
3d402178 | 621 | AliPHOSCPVDigit *cpvDigit1 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit); |
fa412d9b | 622 | Float_t x1 = cpvDigit1->GetXpad() ; |
623 | Float_t z1 = cpvDigit1->GetYpad() ; | |
624 | for (Int_t jdigit=idigit+1; jdigit<ndigits; jdigit++) { | |
3d402178 | 625 | AliPHOSCPVDigit *cpvDigit2 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(jdigit); |
fa412d9b | 626 | Float_t x2 = cpvDigit2->GetXpad() ; |
627 | Float_t z2 = cpvDigit2->GetYpad() ; | |
628 | if (x1==x2 && z1==z2) { | |
629 | Float_t qsum = cpvDigit1->GetQpad() + cpvDigit2->GetQpad() ; | |
630 | cpvDigit2->SetQpad(qsum) ; | |
631 | cpvDigits->RemoveAt(idigit) ; | |
632 | } | |
633 | } | |
634 | } | |
635 | cpvDigits->Compress() ; | |
636 | ||
637 | // 3. add digits to temporary hit list fTmpHits | |
638 | ||
639 | ndigits = cpvDigits->GetEntriesFast(); | |
cd461ab8 | 640 | for (idigit=0; idigit<ndigits; idigit++) { |
3d402178 | 641 | AliPHOSCPVDigit *cpvDigit = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit); |
a3dfe79c | 642 | relid[0] = moduleNumber + 1 ; // CPV (or PHOS) module number |
fa412d9b | 643 | relid[1] =-1 ; // means CPV |
644 | relid[2] = cpvDigit->GetXpad() ; // column number of a pad | |
645 | relid[3] = cpvDigit->GetYpad() ; // row number of a pad | |
646 | ||
647 | // get the absolute Id number | |
648 | fGeom->RelToAbsNumbering(relid, absid) ; | |
649 | ||
650 | // add current digit to the temporary hit list | |
651 | xyze[0] = 0. ; | |
652 | xyze[1] = 0. ; | |
653 | xyze[2] = 0. ; | |
654 | xyze[3] = cpvDigit->GetQpad() ; // amplitude in a pad | |
655 | primary = -1; // No need in primary for CPV | |
037cc66d | 656 | AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd); |
fa412d9b | 657 | |
658 | if (cpvDigit->GetQpad() > 0.02) { | |
659 | xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5); | |
660 | zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5); | |
661 | qsum += cpvDigit->GetQpad(); | |
662 | } | |
663 | } | |
664 | delete cpvDigits; | |
665 | } | |
666 | } // end of IHEP configuration | |
7587f5a5 | 667 | |
037cc66d | 668 | |
fa412d9b | 669 | if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal |
670 | gMC->TrackPosition(pos) ; | |
671 | xyze[0] = pos[0] ; | |
672 | xyze[1] = pos[1] ; | |
673 | xyze[2] = pos[2] ; | |
674 | xyze[3] = gMC->Edep() ; | |
ed4205d8 | 675 | |
037cc66d | 676 | |
677 | if ( (xyze[3] != 0) || entered ) { // Track is inside the crystal and deposits some energy or just entered | |
ed4205d8 | 678 | |
fa412d9b | 679 | gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ; |
037cc66d | 680 | |
fad3e5b9 | 681 | if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(10),"PHO1") == 0 ) |
682 | relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules(); | |
683 | ||
fa412d9b | 684 | relid[1] = 0 ; // means PBW04 |
685 | gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module | |
686 | gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module | |
687 | ||
688 | // get the absolute Id number | |
fa412d9b | 689 | fGeom->RelToAbsNumbering(relid, absid) ; |
ed4205d8 | 690 | |
fa412d9b | 691 | // add current hit to the hit list |
037cc66d | 692 | AddHit(fIshunt, primary,tracknumber, absid, xyze, trackpid,pmom, xyd); |
693 | ||
ed4205d8 | 694 | |
fa412d9b | 695 | } // there is deposited energy |
696 | } // we are inside a PHOS Xtal | |
037cc66d | 697 | |
698 | ||
fa412d9b | 699 | } |
700 | ||
701 | //____________________________________________________________________________ | |
702 | void AliPHOSv1::CPVDigitize (TLorentzVector p, Float_t *zxhit, Int_t moduleNumber, TClonesArray *cpvDigits) | |
703 | { | |
704 | // ------------------------------------------------------------------------ | |
705 | // Digitize one CPV hit: | |
706 | // On input take exact 4-momentum p and position zxhit of the hit, | |
707 | // find the pad response around this hit and | |
708 | // put the amplitudes in the pads into array digits | |
709 | // | |
710 | // Author: Yuri Kharlov (after Serguei Sadovsky) | |
711 | // 2 October 2000 | |
712 | // ------------------------------------------------------------------------ | |
713 | ||
a3dfe79c | 714 | const Float_t kCelWr = fGeom->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad) |
715 | const Float_t kDetR = 0.1; // Relative energy fluctuation in track for 100 e- | |
716 | const Float_t kdEdx = 4.0; // Average energy loss in CPV; | |
717 | const Int_t kNgamz = 5; // Ionization size in Z | |
718 | const Int_t kNgamx = 9; // Ionization size in Phi | |
719 | const Float_t kNoise = 0.03; // charge noise in one pad | |
fa412d9b | 720 | |
721 | Float_t rnor1,rnor2; | |
722 | ||
723 | // Just a reminder on axes notation in the CPV module: | |
724 | // axis Z goes along the beam | |
725 | // axis X goes across the beam in the module plane | |
726 | // axis Y is a normal to the module plane showing from the IP | |
727 | ||
728 | Float_t hitX = zxhit[0]; | |
729 | Float_t hitZ =-zxhit[1]; | |
730 | Float_t pX = p.Px(); | |
731 | Float_t pZ =-p.Pz(); | |
732 | Float_t pNorm = p.Py(); | |
a3dfe79c | 733 | Float_t eloss = kdEdx; |
3d402178 | 734 | |
7eb9d12d | 735 | // cout << "CPVDigitize: YVK : "<<hitX<<" "<<hitZ<<" | "<<pX<<" "<<pZ<<" "<<pNorm<<endl; |
736 | ||
fa412d9b | 737 | Float_t dZY = pZ/pNorm * fGeom->GetCPVGasThickness(); |
738 | Float_t dXY = pX/pNorm * fGeom->GetCPVGasThickness(); | |
739 | gRandom->Rannor(rnor1,rnor2); | |
a3dfe79c | 740 | eloss *= (1 + kDetR*rnor1) * |
741 | TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(fGeom->GetCPVGasThickness(),2))); | |
fa412d9b | 742 | Float_t zhit1 = hitZ + fGeom->GetCPVActiveSize(1)/2 - dZY/2; |
743 | Float_t xhit1 = hitX + fGeom->GetCPVActiveSize(0)/2 - dXY/2; | |
744 | Float_t zhit2 = zhit1 + dZY; | |
745 | Float_t xhit2 = xhit1 + dXY; | |
746 | ||
a3dfe79c | 747 | Int_t iwht1 = (Int_t) (xhit1 / kCelWr); // wire (x) coordinate "in" |
748 | Int_t iwht2 = (Int_t) (xhit2 / kCelWr); // wire (x) coordinate "out" | |
fa412d9b | 749 | |
750 | Int_t nIter; | |
751 | Float_t zxe[3][5]; | |
752 | if (iwht1==iwht2) { // incline 1-wire hit | |
753 | nIter = 2; | |
754 | zxe[0][0] = (zhit1 + zhit2 - dZY*0.57735) / 2; | |
a3dfe79c | 755 | zxe[1][0] = (iwht1 + 0.5) * kCelWr; |
756 | zxe[2][0] = eloss/2; | |
fa412d9b | 757 | zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2; |
a3dfe79c | 758 | zxe[1][1] = (iwht1 + 0.5) * kCelWr; |
759 | zxe[2][1] = eloss/2; | |
fa412d9b | 760 | } |
761 | else if (TMath::Abs(iwht1-iwht2) != 1) { // incline 3-wire hit | |
762 | nIter = 3; | |
763 | Int_t iwht3 = (iwht1 + iwht2) / 2; | |
a3dfe79c | 764 | Float_t xwht1 = (iwht1 + 0.5) * kCelWr; // wire 1 |
765 | Float_t xwht2 = (iwht2 + 0.5) * kCelWr; // wire 2 | |
766 | Float_t xwht3 = (iwht3 + 0.5) * kCelWr; // wire 3 | |
fa412d9b | 767 | Float_t xwr13 = (xwht1 + xwht3) / 2; // center 13 |
768 | Float_t xwr23 = (xwht2 + xwht3) / 2; // center 23 | |
769 | Float_t dxw1 = xhit1 - xwr13; | |
770 | Float_t dxw2 = xhit2 - xwr23; | |
a3dfe79c | 771 | Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); |
772 | Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); | |
773 | Float_t egm3 = kCelWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); | |
fa412d9b | 774 | zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2; |
775 | zxe[1][0] = xwht1; | |
a3dfe79c | 776 | zxe[2][0] = eloss * egm1; |
fa412d9b | 777 | zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2; |
778 | zxe[1][1] = xwht2; | |
a3dfe79c | 779 | zxe[2][1] = eloss * egm2; |
fa412d9b | 780 | zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1; |
781 | zxe[1][2] = xwht3; | |
a3dfe79c | 782 | zxe[2][2] = eloss * egm3; |
fa412d9b | 783 | } |
784 | else { // incline 2-wire hit | |
785 | nIter = 2; | |
a3dfe79c | 786 | Float_t xwht1 = (iwht1 + 0.5) * kCelWr; |
787 | Float_t xwht2 = (iwht2 + 0.5) * kCelWr; | |
fa412d9b | 788 | Float_t xwr12 = (xwht1 + xwht2) / 2; |
789 | Float_t dxw1 = xhit1 - xwr12; | |
790 | Float_t dxw2 = xhit2 - xwr12; | |
791 | Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); | |
792 | Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); | |
793 | zxe[0][0] = (zhit1 + zhit2 - dZY*egm1) / 2; | |
794 | zxe[1][0] = xwht1; | |
a3dfe79c | 795 | zxe[2][0] = eloss * egm1; |
fa412d9b | 796 | zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2; |
797 | zxe[1][1] = xwht2; | |
a3dfe79c | 798 | zxe[2][1] = eloss * egm2; |
fa412d9b | 799 | } |
bea63bea | 800 | |
fa412d9b | 801 | // Finite size of ionization region |
802 | ||
ed4205d8 | 803 | Int_t nCellZ = fGeom->GetNumberOfCPVPadsZ(); |
804 | Int_t nCellX = fGeom->GetNumberOfCPVPadsPhi(); | |
a3dfe79c | 805 | Int_t nz3 = (kNgamz+1)/2; |
806 | Int_t nx3 = (kNgamx+1)/2; | |
807 | cpvDigits->Expand(nIter*kNgamx*kNgamz); | |
fa412d9b | 808 | TClonesArray &ldigits = *(TClonesArray *)cpvDigits; |
809 | ||
810 | for (Int_t iter=0; iter<nIter; iter++) { | |
811 | ||
812 | Float_t zhit = zxe[0][iter]; | |
813 | Float_t xhit = zxe[1][iter]; | |
814 | Float_t qhit = zxe[2][iter]; | |
815 | Float_t zcell = zhit / fGeom->GetPadSizeZ(); | |
816 | Float_t xcell = xhit / fGeom->GetPadSizePhi(); | |
817 | if ( zcell<=0 || xcell<=0 || | |
818 | zcell>=nCellZ || xcell>=nCellX) return; | |
819 | Int_t izcell = (Int_t) zcell; | |
820 | Int_t ixcell = (Int_t) xcell; | |
821 | Float_t zc = zcell - izcell - 0.5; | |
822 | Float_t xc = xcell - ixcell - 0.5; | |
a3dfe79c | 823 | for (Int_t iz=1; iz<=kNgamz; iz++) { |
fa412d9b | 824 | Int_t kzg = izcell + iz - nz3; |
825 | if (kzg<=0 || kzg>nCellZ) continue; | |
826 | Float_t zg = (Float_t)(iz-nz3) - zc; | |
a3dfe79c | 827 | for (Int_t ix=1; ix<=kNgamx; ix++) { |
fa412d9b | 828 | Int_t kxg = ixcell + ix - nx3; |
829 | if (kxg<=0 || kxg>nCellX) continue; | |
830 | Float_t xg = (Float_t)(ix-nx3) - xc; | |
831 | ||
832 | // Now calculate pad response | |
833 | Float_t qpad = CPVPadResponseFunction(qhit,zg,xg); | |
a3dfe79c | 834 | qpad += kNoise*rnor2; |
fa412d9b | 835 | if (qpad<0) continue; |
836 | ||
837 | // Fill the array with pad response ID and amplitude | |
3d402178 | 838 | new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad); |
fa412d9b | 839 | } |
fa412d9b | 840 | } |
fa412d9b | 841 | } |
842 | } | |
843 | ||
844 | //____________________________________________________________________________ | |
845 | Float_t AliPHOSv1::CPVPadResponseFunction(Float_t qhit, Float_t zhit, Float_t xhit) { | |
846 | // ------------------------------------------------------------------------ | |
847 | // Calculate the amplitude in one CPV pad using the | |
848 | // cumulative pad response function | |
849 | // Author: Yuri Kharlov (after Serguei Sadovski) | |
850 | // 3 October 2000 | |
851 | // ------------------------------------------------------------------------ | |
852 | ||
853 | Double_t dz = fGeom->GetPadSizeZ() / 2; | |
854 | Double_t dx = fGeom->GetPadSizePhi() / 2; | |
855 | Double_t z = zhit * fGeom->GetPadSizeZ(); | |
856 | Double_t x = xhit * fGeom->GetPadSizePhi(); | |
857 | Double_t amplitude = qhit * | |
858 | (CPVCumulPadResponse(z+dz,x+dx) - CPVCumulPadResponse(z+dz,x-dx) - | |
859 | CPVCumulPadResponse(z-dz,x+dx) + CPVCumulPadResponse(z-dz,x-dx)); | |
860 | return (Float_t)amplitude; | |
7587f5a5 | 861 | } |
862 | ||
fa412d9b | 863 | //____________________________________________________________________________ |
864 | Double_t AliPHOSv1::CPVCumulPadResponse(Double_t x, Double_t y) { | |
865 | // ------------------------------------------------------------------------ | |
866 | // Cumulative pad response function | |
867 | // It includes several terms from the CF decomposition in electrostatics | |
868 | // Note: this cumulative function is wrong since omits some terms | |
869 | // but the cell amplitude obtained with it is correct because | |
870 | // these omitting terms cancel | |
871 | // Author: Yuri Kharlov (after Serguei Sadovski) | |
872 | // 3 October 2000 | |
873 | // ------------------------------------------------------------------------ | |
874 | ||
a3dfe79c | 875 | const Double_t kA=1.0; |
876 | const Double_t kB=0.7; | |
fa412d9b | 877 | |
878 | Double_t r2 = x*x + y*y; | |
879 | Double_t xy = x*y; | |
880 | Double_t cumulPRF = 0; | |
881 | for (Int_t i=0; i<=4; i++) { | |
a3dfe79c | 882 | Double_t b1 = (2*i + 1) * kB; |
fa412d9b | 883 | cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) ); |
884 | } | |
a3dfe79c | 885 | cumulPRF *= kA/(2*TMath::Pi()); |
fa412d9b | 886 | return cumulPRF; |
887 | } | |
7eb9d12d | 888 |