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36b81802 | 1 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
2 | * See cxx source for full Copyright notice */ | |
3 | // Implementation of the interface for THBTprocessor | |
4 | // Author: Piotr Krzysztof Skowronski <Piotr.Skowronski@cern.ch> | |
5 | ////////////////////////////////////////////////////////////////////////////////// | |
6 | //Wrapper class for "hbt processor" after burner | |
7 | //The origibal code is written in fortran by Lanny Ray | |
8 | //and is put in the directory $ALICE_ROOT/HBTprocessor | |
9 | //Detailed description is on the top of the file hbt_event_processor.f | |
10 | // | |
11 | //This class can be used ONLY with AliGenCocktailAfterBurner wrapper generator | |
12 | //i.e. (in Config.C) | |
13 | // .... | |
14 | // AliGenCocktailAfterBurner = gener = new AliGenCocktailAfterBurner(); | |
15 | // gener->SetPhiRange(0, 360); //Set global parameters | |
16 | // gener->SetThetaRange(35., 145.); | |
17 | // AliGenHIJINGpara *hijing = new AliGenHIJINGpara(10000); //Add some generator | |
18 | // hijing->SetMomentumRange(0, 999); | |
19 | // gener->AddGenerator(hijing,"HIJING PARAMETRIZATION",1); | |
20 | // | |
21 | // AliGenHBTprocessor *hbtp = new AliGenHBTprocessor(); //create object | |
22 | // hbtp->SetRefControl(2); //set parameters | |
23 | // hbtp->SetSwitch1D(1); | |
24 | // hbtp->SetR0(6);//fm - radius | |
25 | // hbtp->SetLambda(0.7);//chaocity parameter | |
26 | // gener->AddAfterBurner(hbtp,"HBT PROCESSOR",1); //add to the main generator | |
27 | // | |
28 | // gener->Init(); | |
29 | // | |
30 | //CAUTIONS: | |
31 | // A) HBT PROCESSOR NEEDS MORE THAN ONE EVENT TO WORK | |
32 | // AS MORE AS IT BETTER WORKS | |
33 | // B) IT IS ABLE TO "ADD" CORRELATIONS ONLY UP TO TWO PARTICLE TYPES AT ONES | |
88cb7938 | 34 | // |
35 | // | |
36 | // Artificial particle dennsity enhancment feature | |
37 | // HBT Processor is unable to process correctly low multiplicity particles | |
38 | // even if the high statistics (more events) is supplied. | |
39 | // For that reason was implemented artificial multiplicity enhancement | |
40 | // - see also comments in HBT Processor source file (HBTP/hbt_event_processor.f) | |
41 | // or web page (http://alisoft.cern.ch/people/skowron/hbtprocessor/hbteventprocessor.html) | |
42 | // concerning trk_accep or SetTrackRejectionFactor method in this class | |
43 | // Fortran is cheated by masking several events a single one. Number is defined by fEventMerge | |
44 | // variable. In case it is equal to 1, there is no masking and the feature is off. | |
45 | // But, for example if it is 5, and we have 100 events, number of events passed to fortran is 100/5=20 | |
46 | // When fortran asks about multiplcity of event, let sey, 1 - multiplicity of events 5 to 9 is summed up | |
47 | // and returned. | |
48 | // | |
49 | // | |
36b81802 | 50 | ////////////////////////////////////////////////////////////////////////////////// |
51 | ||
52 | // 11.11.2001 Piotr Skowronski | |
53 | // Setting seed (date) in RNG in the constructor | |
54 | ||
55 | // 09.10.2001 Piotr Skowronski | |
56 | // | |
57 | // Theta - Eta cohernecy facilities added: | |
58 | // AliGenerator::SetThetaRange method overriden | |
59 | // Static methods added | |
60 | // EtaToTheta | |
61 | // ThetaToEta | |
62 | // DegreesToRadians | |
63 | // RadiansToDegrees | |
64 | // | |
65 | // Class description comments put on proper place | |
66 | ||
67 | // 27.09.2001 Piotr Skowronski | |
68 | // removing of redefinition of defaults velues | |
69 | // in method's implementation. | |
70 | // | |
71 | // | |
72 | ||
73 | #include "AliGenHBTprocessor.h" | |
88cb7938 | 74 | |
88cb7938 | 75 | #include <TParticle.h> |
76 | #include "THBTprocessor.h" | |
77 | ||
36b81802 | 78 | #include "AliStack.h" |
36b81802 | 79 | #include "AliGenCocktailAfterBurner.h" |
371660fe | 80 | #include "AliLog.h" |
36b81802 | 81 | |
82 | ||
83 | ||
84 | ClassImp(AliGenHBTprocessor) | |
85 | ||
88cb7938 | 86 | Int_t AliGenHBTprocessor::fgDebug = 0; |
b456eb2e | 87 | static TRandom* gAliRandom;//RNG to be used by the fortran code |
36b81802 | 88 | |
89 | AliGenCocktailAfterBurner* GetGenerator(); | |
90 | /*******************************************************************/ | |
36b81802 | 91 | |
b456eb2e | 92 | AliGenHBTprocessor::AliGenHBTprocessor(): |
93 | AliGenerator(), | |
94 | fHBTprocessor(0x0), | |
95 | fHbtPStatCodes(0x0), | |
96 | fEventMerge(1) | |
36b81802 | 97 | { |
98 | // | |
99 | // Standard constructor | |
100 | // Sets default veues of all parameters | |
36b81802 | 101 | |
102 | SetName("AliGenHBTprocessor"); | |
103 | SetTitle("AliGenHBTprocessor"); | |
104 | ||
b456eb2e | 105 | gAliRandom = fRandom; |
36b81802 | 106 | fHBTprocessor = new THBTprocessor(); |
107 | ||
108 | fNPDGCodes = 0; | |
109 | DefineParticles(); | |
110 | ||
111 | SetTrackRejectionFactor(); | |
112 | SetRefControl(); | |
113 | SetPIDs(); | |
114 | SetNPIDtypes(); | |
115 | SetDeltap(); | |
116 | SetMaxIterations(); | |
117 | SetDelChi(); | |
118 | SetIRand(); | |
119 | SetLambda(); | |
120 | SetR1d() ; | |
121 | SetRSide(); | |
122 | SetROut() ; | |
123 | SetRLong() ; | |
124 | SetRPerp(); | |
125 | SetRParallel(); | |
126 | SetR0(); | |
127 | SetQ0(); | |
128 | SetSwitch1D(); | |
129 | SetSwitch3D(); | |
130 | SetSwitchType(); | |
131 | SetSwitchCoherence(); | |
132 | SetSwitchCoulomb(); | |
133 | SetSwitchFermiBose(); | |
134 | //SetMomentumRange(); | |
135 | SetPtRange(); | |
136 | SetPxRange(); | |
137 | SetPyRange(); | |
138 | SetPzRange(); | |
139 | SetPhiRange(); | |
140 | SetEtaRange(); | |
141 | SetNPtBins(); | |
142 | SetNPhiBins(); | |
143 | SetNEtaBins(); | |
144 | SetNPxBins(); | |
145 | SetNPyBins(); | |
146 | SetNPzBins(); | |
147 | SetNBins1DFineMesh(); | |
148 | SetBinSize1DFineMesh(); | |
149 | SetNBins1DCoarseMesh(); | |
150 | SetBinSize1DCoarseMesh(); | |
151 | SetNBins3DFineMesh(); | |
152 | SetBinSize3DFineMesh(); | |
153 | SetNBins3DCoarseMesh(); | |
154 | SetBinSize3DCoarseMesh(); | |
155 | SetNBins3DFineProjectMesh(); | |
156 | } | |
157 | ||
158 | /*******************************************************************/ | |
159 | ||
160 | ||
161 | /*******************************************************************/ | |
162 | ||
163 | AliGenHBTprocessor::~AliGenHBTprocessor() | |
164 | { | |
165 | //destructor | |
166 | CleanStatusCodes(); | |
167 | if (fHBTprocessor) delete fHBTprocessor; //delete generator | |
168 | ||
169 | } | |
170 | ||
171 | /*******************************************************************/ | |
172 | ||
173 | void AliGenHBTprocessor::InitStatusCodes() | |
174 | { | |
175 | //creates and inits status codes array to zero | |
176 | AliGenCocktailAfterBurner *cab = GetGenerator(); | |
177 | ||
178 | if(!cab) Fatal("InitStatusCodes()","Can not find AliGenCocktailAfterBurner generator"); | |
179 | ||
180 | Int_t nev = cab->GetNumberOfEvents(); | |
181 | ||
182 | fHbtPStatCodes = new Int_t* [nev]; | |
183 | for( Int_t i =0; i<nev;i++) | |
184 | { | |
185 | Int_t nprim = cab->GetStack(i)->GetNprimary(); | |
186 | fHbtPStatCodes[i] = new Int_t[nprim]; | |
187 | for (Int_t k =0 ;k<nprim;k++) | |
188 | fHbtPStatCodes[i][k] =0; | |
189 | ||
190 | } | |
191 | ||
192 | } | |
193 | /*******************************************************************/ | |
194 | ||
195 | void AliGenHBTprocessor::CleanStatusCodes() | |
196 | { | |
197 | //Cleans up status codes | |
198 | if (fHbtPStatCodes) | |
199 | { | |
200 | for (Int_t i =0; i<GetGenerator()->GetNumberOfEvents(); i++) | |
201 | delete [] fHbtPStatCodes[i]; | |
202 | delete fHbtPStatCodes; | |
203 | fHbtPStatCodes = 0; | |
204 | } | |
205 | ||
206 | } | |
207 | /*******************************************************************/ | |
208 | ||
209 | void AliGenHBTprocessor::Init() | |
210 | { | |
211 | //sets up parameters in generator | |
212 | ||
213 | THBTprocessor *thbtp = fHBTprocessor; | |
214 | ||
215 | ||
216 | thbtp->SetTrackRejectionFactor(fTrackRejectionFactor); | |
217 | thbtp->SetRefControl(fReferenceControl); | |
218 | ||
219 | if ((fPid[0] == fPid[1]) || (fPid[0] == 0) || (fPid[1] == 0)) | |
220 | { | |
221 | if (fPid[0] == 0) | |
222 | thbtp->SetPIDs(IdFromPDG(fPid[1]) ,0); | |
223 | else | |
224 | thbtp->SetPIDs(IdFromPDG(fPid[0]) ,0); | |
225 | thbtp->SetNPIDtypes(1); | |
226 | ||
227 | if (fSwitchType !=1) | |
228 | Warning("AliGenHBTprocessor::Init","\nThere is only one particle type set,\n\ | |
229 | and Switch_Type differnt then 1,\n which does not make sense.\n\ | |
230 | Setting it to 1.\n"); | |
231 | ||
232 | SetSwitchType(1); | |
233 | } | |
234 | else | |
235 | { | |
236 | thbtp->SetPIDs(IdFromPDG(fPid[0]) ,IdFromPDG(fPid[1])); | |
237 | SetNPIDtypes(2); | |
238 | thbtp->SetSwitchType(fSwitchType); | |
239 | } | |
240 | ||
241 | thbtp->SetMaxIterations(fMaxit); | |
242 | thbtp->SetDelChi(fDelchi); | |
243 | thbtp->SetIRand(fIrand); | |
244 | thbtp->SetLambda(fLambda); | |
245 | thbtp->SetR1d(fR1d); | |
246 | thbtp->SetRSide(fRside); | |
247 | thbtp->SetROut(fRout); | |
248 | thbtp->SetRLong(fRlong); | |
249 | thbtp->SetRPerp(fRperp); | |
250 | thbtp->SetRParallel(fRparallel); | |
251 | thbtp->SetR0(fR0); | |
252 | thbtp->SetQ0(fQ0); | |
253 | thbtp->SetSwitch1D(fSwitch1d); | |
254 | thbtp->SetSwitch3D(fSwitch3d); | |
255 | thbtp->SetSwitchType(fSwitchType); | |
256 | thbtp->SetSwitchCoherence(fSwitchCoherence); | |
257 | thbtp->SetSwitchCoulomb(fSwitchCoulomb); | |
258 | thbtp->SetSwitchFermiBose(fSwitchFermiBose); | |
259 | thbtp->SetPtRange(fPtMin,fPtMax); | |
260 | thbtp->SetPxRange(fPxMin,fPxMax); | |
261 | thbtp->SetPyRange(fPyMin,fPyMax); | |
262 | thbtp->SetPzRange(fPzMin,fPzMax); | |
88cb7938 | 263 | thbtp->SetPhiRange(fPhiMin*180./((Float_t)TMath::Pi())+180.0, //casting is because if fPhiMin = 180.0 then |
264 | fPhiMax*180./((Float_t)TMath::Pi())+180.0);//TMath::Pi() != TMath::Pi()*fPhiMin/180.0, | |
36b81802 | 265 | thbtp->SetEtaRange(fEtaMin,fEtaMax); |
266 | thbtp->SetNPtBins(fNPtBins); | |
267 | thbtp->SetNPhiBins(fNPhiBins); | |
268 | thbtp->SetNEtaBins(fNEtaBins); | |
269 | thbtp->SetNPxBins(fNPxBins); | |
270 | thbtp->SetNPyBins(fNPyBins); | |
271 | thbtp->SetNPzBins(fNPzBins); | |
272 | thbtp->SetNBins1DFineMesh(fN1dFine); | |
273 | thbtp->SetBinSize1DFineMesh(fBinsize1dFine); | |
274 | thbtp->SetNBins1DCoarseMesh(fN1dCoarse); | |
275 | thbtp->SetBinSize1DCoarseMesh(fBinsize1dCoarse); | |
276 | thbtp->SetNBins3DFineMesh(fN3dFine); | |
277 | thbtp->SetBinSize3DFineMesh(fBinsize3dFine); | |
278 | thbtp->SetNBins3DCoarseMesh(fN3dCoarse); | |
279 | thbtp->SetBinSize3DCoarseMesh(fBinsize3dCoarse); | |
280 | thbtp->SetNBins3DFineProjectMesh(fN3dFineProject); | |
88cb7938 | 281 | |
282 | thbtp->SetPrintFull(fPrintFull); | |
36b81802 | 283 | |
284 | } | |
285 | /*******************************************************************/ | |
286 | ||
287 | void AliGenHBTprocessor::Generate() | |
288 | { | |
289 | //starts processig | |
290 | AliGenCocktailAfterBurner* cab = GetGenerator(); | |
291 | if (cab == 0x0) | |
292 | { | |
293 | Fatal("Generate()","AliGenHBTprocessor needs AliGenCocktailAfterBurner to be main generator"); | |
294 | } | |
295 | if (cab->GetNumberOfEvents() <2) | |
296 | { | |
297 | Fatal("Generate()", | |
298 | "HBT Processor needs more than 1 event to work properly,\ | |
299 | but there is only %d set", cab->GetNumberOfEvents()); | |
300 | } | |
301 | ||
302 | ||
303 | fHBTprocessor->Initialize(); //reset all fields of common blocks | |
304 | //in case there are many HBT processors | |
305 | //run one after one (i.e. in AliCocktailAfterBurner) | |
306 | //between Init() called and Generate there might | |
307 | Init(); //be different instance running - be sure that we have our settings | |
308 | ||
309 | InitStatusCodes(); //Init status codes | |
310 | ||
311 | fHBTprocessor->GenerateEvent(); //Generates event | |
312 | ||
313 | CleanStatusCodes(); //Clean Status codes - thet are not needed anymore | |
314 | } | |
315 | ||
316 | /*******************************************************************/ | |
317 | ||
318 | ||
319 | /*******************************************************************/ | |
320 | void AliGenHBTprocessor::GetParticles(TClonesArray * particles) const | |
321 | { | |
322 | //practically dumm | |
323 | if (!particles) | |
324 | { | |
88cb7938 | 325 | Error("GetParticles","Particles has to be initialized"); |
36b81802 | 326 | return; |
327 | } | |
328 | fHBTprocessor->ImportParticles(particles); | |
329 | } | |
330 | ||
331 | /*******************************************************************/ | |
332 | ||
333 | Int_t AliGenHBTprocessor::GetHbtPStatusCode(Int_t part) const | |
334 | { | |
335 | //returns the status code of the given particle in the active event | |
336 | //see SetActiveEvent in the bottom of AliGenHBTprocessor.cxx | |
337 | //and in AliCocktailAfterBurner | |
88cb7938 | 338 | Int_t ev, idx; |
339 | GetTrackEventIndex(part,ev,idx); | |
340 | if ( (ev<0) || (idx<0) ) | |
341 | { | |
342 | Error("GetHbtPStatusCode","GetTrackEventIndex returned error"); | |
343 | return 0; | |
344 | } | |
0798b21e | 345 | return fHbtPStatCodes[ev][idx]; |
88cb7938 | 346 | |
36b81802 | 347 | } |
348 | ||
349 | /*******************************************************************/ | |
350 | void AliGenHBTprocessor::SetHbtPStatusCode(Int_t hbtstatcode, Int_t part) | |
351 | { | |
352 | //Sets the given status code to given particle number (part) in the active event | |
88cb7938 | 353 | Int_t ev, idx; |
354 | GetTrackEventIndex(part,ev,idx); | |
355 | if ( (ev<0) || (idx<0) ) | |
356 | { | |
357 | Error("GetHbtPStatusCode","GetTrackEventIndex returned error"); | |
358 | return; | |
359 | } | |
360 | else fHbtPStatCodes[ev][idx] = hbtstatcode; | |
36b81802 | 361 | } |
362 | ||
363 | /*******************************************************************/ | |
364 | ||
365 | void AliGenHBTprocessor::SetTrackRejectionFactor(Float_t trf) //def 1.0 | |
366 | { | |
367 | //Sets the Track Rejection Factor | |
368 | //variates in range 0.0 <-> 1.0 | |
369 | //Describes the factor of particles rejected from the output. | |
370 | //Used only in case of low muliplicity particles e.g. lambdas. | |
371 | //Processor generates addisional particles and builds the | |
372 | //correletions on such a statistics. | |
373 | //At the end these particels are left in the event according | |
374 | //to this factor: 1==all particles are left | |
375 | // 0==all are removed | |
376 | ||
377 | fTrackRejectionFactor=trf; | |
378 | fHBTprocessor->SetTrackRejectionFactor(trf); | |
379 | } | |
380 | /*******************************************************************/ | |
381 | ||
382 | void AliGenHBTprocessor::SetRefControl(Int_t rc) //default 2 | |
383 | { | |
384 | //Sets the Refernce Control Switch | |
385 | //switch wether read reference histograms from file =1 | |
386 | // compute from input events =2 - default | |
387 | fReferenceControl=rc; | |
388 | fHBTprocessor->SetRefControl(rc); | |
389 | } | |
390 | /*******************************************************************/ | |
391 | ||
392 | void AliGenHBTprocessor::SetPIDs(Int_t pid1,Int_t pid2) | |
393 | { | |
394 | //default pi+ pi- | |
395 | //Sets PDG Codes of particles to be processed, default \\Pi^{+} and \\Pi^{-} | |
396 | //This method accepts PDG codes which is | |
397 | //in opposite to THBBProcessor which accepts GEANT PID | |
398 | if ( (pid1 == 0) && (pid2 == 0) ) | |
399 | { | |
400 | Error("AliGenHBTprocessor::SetPIDs","Sensless Particle Types setting: 0 0, Ignoring\n"); | |
401 | } | |
402 | ||
403 | fPid[0]=pid1; | |
404 | fPid[1]=pid2; | |
405 | ||
406 | if(pid1 == pid2) | |
407 | { | |
408 | fHBTprocessor->SetPIDs(IdFromPDG(pid1) ,0); | |
409 | SetNPIDtypes(1); | |
410 | SetSwitchType(1); | |
411 | } | |
412 | else | |
413 | { | |
414 | fHBTprocessor->SetPIDs(IdFromPDG(pid1) ,IdFromPDG(pid2)); | |
415 | SetNPIDtypes(2); | |
416 | } | |
417 | } | |
418 | /*******************************************************************/ | |
419 | ||
420 | void AliGenHBTprocessor::SetNPIDtypes(Int_t npidt) | |
421 | { | |
422 | //Number ofparticle types to be processed - default 2 | |
423 | //see AliGenHBTprocessor::SetPIDs | |
424 | ||
425 | fNPidTypes = npidt; | |
426 | fHBTprocessor->SetNPIDtypes(npidt); | |
427 | } | |
428 | /*******************************************************************/ | |
429 | ||
430 | void AliGenHBTprocessor::SetDeltap(Float_t deltp) | |
431 | { | |
432 | //default = 0.1 GeV | |
433 | //maximum range for random momentum shifts in GeV/c; | |
434 | //px,py,pz independent; Default = 0.1 GeV/c. | |
435 | fDeltap=deltp; | |
436 | fHBTprocessor->SetDeltap(deltp); | |
437 | } | |
438 | /*******************************************************************/ | |
439 | ||
440 | void AliGenHBTprocessor::SetMaxIterations(Int_t maxiter) | |
441 | { | |
442 | //maximum # allowed iterations thru all the | |
443 | //tracks for each event. Default = 50. | |
444 | //If maxit=0, then calculate the correlations | |
445 | //for the input set of events without doing the | |
446 | //track adjustment procedure. | |
447 | ||
448 | fMaxit=maxiter; | |
449 | fHBTprocessor->SetMaxIterations(maxiter); | |
450 | } | |
451 | ||
452 | /*******************************************************************/ | |
453 | void AliGenHBTprocessor::SetDelChi(Float_t dc) | |
454 | { | |
455 | //min % change in total chi-square for which | |
456 | //the track adjustment iterations may stop, | |
457 | //Default = 0.1%. | |
458 | ||
459 | fDelchi=dc; | |
460 | fHBTprocessor->SetDelChi(dc); | |
461 | } | |
462 | /*******************************************************************/ | |
463 | ||
464 | void AliGenHBTprocessor::SetIRand(Int_t irnd) | |
465 | { | |
466 | //if fact dummy - used only for compatibility | |
467 | //we are using AliRoot built in RNG | |
468 | //dummy in fact since we are using aliroot build-in RNG | |
469 | //Sets renaodom number generator | |
470 | fIrand=irnd; | |
471 | fHBTprocessor->SetIRand(irnd); | |
472 | } | |
473 | /*******************************************************************/ | |
474 | ||
475 | void AliGenHBTprocessor::SetLambda(Float_t lam) | |
476 | { | |
477 | //default = 0.6 | |
478 | // Sets Chaoticity Parameter | |
479 | fLambda = lam; | |
480 | fHBTprocessor->SetLambda(lam); | |
481 | } | |
482 | /*******************************************************************/ | |
483 | void AliGenHBTprocessor::SetR1d(Float_t r) | |
484 | { | |
485 | //default 7.0 | |
486 | //Sets Spherical source model radius (fm) | |
487 | fR1d = r; | |
488 | fHBTprocessor->SetR1d(r); | |
489 | } | |
490 | /*******************************************************************/ | |
491 | void AliGenHBTprocessor::SetRSide(Float_t rs) | |
492 | { | |
493 | //default rs = 6.0 | |
494 | //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm) | |
495 | ||
496 | fRside = rs; | |
497 | fHBTprocessor->SetRSide(rs); | |
498 | } | |
499 | /*******************************************************************/ | |
500 | void AliGenHBTprocessor::SetROut(Float_t ro) | |
501 | { | |
502 | //default ro = 7.0 | |
503 | //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm) | |
504 | fRout = ro; | |
505 | fHBTprocessor->SetROut(ro); | |
506 | } | |
507 | /*******************************************************************/ | |
508 | void AliGenHBTprocessor::SetRLong(Float_t rl) | |
509 | { | |
510 | //default rl = 4.0 | |
511 | //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm) | |
512 | fRlong = rl; | |
513 | fHBTprocessor->SetRLong(rl); | |
514 | } | |
515 | /*******************************************************************/ | |
516 | void AliGenHBTprocessor::SetRPerp(Float_t rp) | |
517 | { | |
518 | //default rp = 6.0 | |
519 | //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm). | |
520 | fRperp = rp; | |
521 | fHBTprocessor->SetRPerp(rp); | |
522 | } | |
523 | /*******************************************************************/ | |
524 | void AliGenHBTprocessor::SetRParallel(Float_t rprl) | |
525 | { | |
526 | //default rprl = 4.0 | |
527 | //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm). | |
528 | fRparallel = rprl; | |
529 | fHBTprocessor->SetRParallel(rprl); | |
530 | } | |
531 | /*******************************************************************/ | |
532 | void AliGenHBTprocessor::SetR0(Float_t r0) | |
533 | { | |
534 | //default r0 = 4.0 | |
535 | //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm). | |
536 | fR0 = r0; | |
537 | fHBTprocessor->SetR0(r0); | |
538 | } | |
539 | /*******************************************************************/ | |
540 | void AliGenHBTprocessor::SetQ0(Float_t q0) | |
541 | { | |
542 | //default q0 = 9.0 | |
543 | //Sets Q0 = NA35 Coulomb parameter for finite source size in (GeV/c) | |
544 | // if fSwitchCoulomb = 2 | |
545 | // = Spherical Coulomb source radius in (fm) | |
546 | // if switchCoulomb = 3, used to interpolate the | |
547 | // input Pratt/Cramer discrete Coulomb source | |
548 | // radii tables. | |
549 | fQ0 = q0; | |
550 | fHBTprocessor->SetQ0(q0); | |
551 | } | |
552 | ||
553 | /*******************************************************************/ | |
554 | void AliGenHBTprocessor::SetSwitch1D(Int_t s1d) | |
555 | { | |
556 | //default s1d = 3 | |
557 | // Sets fSwitch1d | |
558 | // = 0 to not compute the 1D two-body //orrelations. | |
559 | // = 1 to compute this using Q-invariant | |
560 | // = 2 to compute this using Q-total | |
561 | // = 3 to compute this using Q-3-ve//tor | |
562 | ||
563 | fSwitch1d = s1d; | |
564 | fHBTprocessor->SetSwitch1D(s1d); | |
565 | } | |
566 | /*******************************************************************/ | |
567 | void AliGenHBTprocessor::SetSwitch3D(Int_t s3d) | |
568 | { | |
569 | //default s3d = 0 | |
570 | // Sets fSwitch3d | |
571 | // = 0 to not compute the 3D two-body correlations. | |
572 | // = 1 to compute this using the side-out-long form | |
573 | // = 2 to compute this using the Yanno-Koonin-Pogoredskij form. | |
574 | ||
575 | fSwitch3d = s3d; | |
576 | fHBTprocessor->SetSwitch3D(s3d); | |
577 | } | |
578 | /*******************************************************************/ | |
579 | void AliGenHBTprocessor::SetSwitchType(Int_t st) | |
580 | { | |
581 | //default st = 3 | |
582 | // Sets switch_type = 1 to fit only the like pair correlations | |
583 | // = 2 to fit only the unlike pair correlations | |
584 | // = 3 to fit both the like and unlike pair correl. | |
585 | //See SetPIDs and Init | |
586 | //If only one particle type is set, unly==1 makes sens | |
587 | ||
588 | fSwitchType = st; | |
589 | fHBTprocessor->SetSwitchType(st); | |
590 | } | |
591 | /*******************************************************************/ | |
592 | void AliGenHBTprocessor::SetSwitchCoherence(Int_t sc) | |
593 | { | |
594 | // default sc = 0 | |
595 | // switchCoherence = 0 for purely incoherent source (but can have | |
596 | // lambda < 1.0) | |
597 | // = 1 for mixed incoherent and coherent source | |
598 | ||
599 | fSwitchCoherence = sc; | |
600 | fHBTprocessor->SetSwitchCoherence(sc); | |
601 | } | |
602 | /*******************************************************************/ | |
603 | void AliGenHBTprocessor::SetSwitchCoulomb(Int_t scol) | |
604 | { | |
605 | //default scol = 2 | |
606 | // switchCoulomb = 0 no Coulomb correction | |
607 | // = 1 Point source Gamow correction only | |
608 | // = 2 NA35 finite source size correction | |
609 | // = 3 Pratt/Cramer finite source size correction; | |
610 | // interpolated from input tables. | |
611 | fSwitchCoulomb =scol; | |
612 | fHBTprocessor->SetSwitchCoulomb(scol); | |
613 | } | |
614 | /*******************************************************************/ | |
615 | void AliGenHBTprocessor::SetSwitchFermiBose(Int_t sfb) | |
616 | { | |
617 | //default sfb = 1 | |
618 | // switchFermiBose = 1 Boson pairs | |
619 | // = -1 Fermion pairs | |
620 | ||
621 | fSwitchFermiBose = sfb; | |
622 | fHBTprocessor->SetSwitchFermiBose(sfb); | |
623 | } | |
624 | /*******************************************************************/ | |
625 | void AliGenHBTprocessor::SetPtRange(Float_t ptmin, Float_t ptmax) | |
626 | { | |
627 | // default ptmin = 0.1, ptmax = 0.98 | |
628 | //Sets Pt range (GeV) | |
629 | AliGenerator::SetPtRange(ptmin,ptmax); | |
630 | fHBTprocessor->SetPtRange(ptmin,ptmax); | |
631 | } | |
632 | ||
633 | /*******************************************************************/ | |
634 | void AliGenHBTprocessor::SetPxRange(Float_t pxmin, Float_t pxmax) | |
635 | { | |
636 | //default pxmin = -1.0, pxmax = 1.0 | |
637 | //Sets Px range | |
638 | fPxMin =pxmin; | |
639 | fPxMax =pxmax; | |
640 | fHBTprocessor->SetPxRange(pxmin,pxmax); | |
641 | } | |
642 | /*******************************************************************/ | |
643 | void AliGenHBTprocessor::SetPyRange(Float_t pymin, Float_t pymax) | |
644 | { | |
645 | //default pymin = -1.0, pymax = 1.0 | |
646 | //Sets Py range | |
647 | fPyMin =pymin; | |
648 | fPyMax =pymax; | |
649 | fHBTprocessor->SetPyRange(pymin,pymax); | |
650 | } | |
651 | /*******************************************************************/ | |
652 | void AliGenHBTprocessor::SetPzRange(Float_t pzmin, Float_t pzmax) | |
653 | { | |
654 | //default pzmin = -3.6, pzmax = 3.6 | |
655 | //Sets Py range | |
656 | fPzMin =pzmin; | |
657 | fPzMax =pzmax; | |
658 | fHBTprocessor->SetPzRange(pzmin,pzmax); | |
659 | } | |
371660fe | 660 | void AliGenHBTprocessor::SetMomentumRange(Float_t /*pmin*/, Float_t /*pmax*/) |
36b81802 | 661 | { |
662 | //default pmin=0, pmax=0 | |
663 | //Do not use this method! | |
664 | MayNotUse("AliGenHBTprocessor::SetMomentumRange Method is Dummy"); | |
665 | } | |
666 | ||
667 | /*******************************************************************/ | |
668 | void AliGenHBTprocessor::SetPhiRange(Float_t phimin, Float_t phimax) | |
669 | { | |
670 | // | |
671 | //Sets \\Phi range | |
672 | AliGenerator::SetPhiRange(phimin,phimax); | |
673 | ||
88cb7938 | 674 | fHBTprocessor->SetPhiRange(phimin+180.0,phimax+180.0); |
36b81802 | 675 | } |
676 | /*******************************************************************/ | |
677 | void AliGenHBTprocessor::SetEtaRange(Float_t etamin, Float_t etamax) | |
678 | { | |
679 | //default etamin = -1.5, etamax = 1.5 | |
680 | //Sets \\Eta range | |
681 | fEtaMin= etamin; | |
682 | fEtaMax =etamax; | |
683 | fHBTprocessor->SetEtaRange(etamin,etamax); | |
684 | ||
685 | //set the azimothal angle range in the AliGeneraor - | |
686 | //to keep coherency between azimuthal angle and pseudorapidity | |
687 | //DO NOT CALL this->SetThetaRange, because it calls this method (where we are) | |
688 | //which must cause INFINITE LOOP | |
689 | AliGenerator::SetThetaRange(RadiansToDegrees(EtaToTheta(fEtaMin)), | |
690 | RadiansToDegrees(EtaToTheta(fEtaMax))); | |
691 | ||
692 | } | |
693 | /*******************************************************************/ | |
694 | void AliGenHBTprocessor::SetThetaRange(Float_t thetamin, Float_t thetamax) | |
695 | { | |
696 | //default thetamin = 0, thetamax = 180 | |
697 | //Azimuthal angle, override AliGenerator method which uses widely (i.e. wrapper generators) | |
698 | //core fortran HBTProcessor uses Eta (pseudorapidity) | |
699 | //so these methods has to be synchronized | |
700 | ||
701 | AliGenerator::SetThetaRange(thetamin,thetamax); | |
702 | ||
703 | SetEtaRange( ThetaToEta(fThetaMin) , ThetaToEta(fThetaMax) ); | |
704 | ||
705 | } | |
706 | ||
707 | /*******************************************************************/ | |
708 | void AliGenHBTprocessor::SetNPtBins(Int_t nptbin) | |
709 | { | |
710 | //default nptbin = 50 | |
711 | //set number of Pt bins | |
712 | fNPtBins= nptbin; | |
713 | fHBTprocessor->SetNPtBins(nptbin); | |
714 | } | |
715 | /*******************************************************************/ | |
716 | void AliGenHBTprocessor::SetNPhiBins(Int_t nphibin) | |
717 | { | |
718 | //default nphibin = 50 | |
719 | //set number of Phi bins | |
720 | fNPhiBins=nphibin; | |
721 | fHBTprocessor->SetNPhiBins(nphibin); | |
722 | } | |
723 | /*******************************************************************/ | |
724 | void AliGenHBTprocessor::SetNEtaBins(Int_t netabin) | |
725 | { | |
726 | //default netabin = 50 | |
727 | //set number of Eta bins | |
728 | fNEtaBins = netabin; | |
729 | fHBTprocessor->SetNEtaBins(netabin); | |
730 | } | |
731 | /*******************************************************************/ | |
732 | void AliGenHBTprocessor::SetNPxBins(Int_t npxbin) | |
733 | { | |
734 | //default npxbin = 20 | |
735 | //set number of Px bins | |
736 | fNPxBins = npxbin; | |
737 | fHBTprocessor->SetNPxBins(npxbin); | |
738 | } | |
739 | /*******************************************************************/ | |
740 | void AliGenHBTprocessor::SetNPyBins(Int_t npybin) | |
741 | { | |
742 | //default npybin = 20 | |
743 | //set number of Py bins | |
744 | fNPyBins = npybin; | |
745 | fHBTprocessor->SetNPyBins(npybin); | |
746 | } | |
747 | /*******************************************************************/ | |
748 | void AliGenHBTprocessor::SetNPzBins(Int_t npzbin) | |
749 | { | |
750 | //default npzbin = 70 | |
751 | //set number of Pz bins | |
752 | fNPzBins = npzbin; | |
753 | fHBTprocessor->SetNPzBins(npzbin); | |
754 | } | |
755 | /*******************************************************************/ | |
756 | void AliGenHBTprocessor::SetNBins1DFineMesh(Int_t n) | |
757 | { | |
758 | //default n = 10 | |
759 | //Sets the number of bins in the 1D mesh | |
760 | fN1dFine =n; | |
761 | fHBTprocessor->SetNBins1DFineMesh(n); | |
762 | ||
763 | } | |
764 | /*******************************************************************/ | |
765 | void AliGenHBTprocessor::SetBinSize1DFineMesh(Float_t x) | |
766 | { | |
767 | //default x=0.01 | |
768 | //Sets the bin size in the 1D mesh | |
769 | fBinsize1dFine = x; | |
770 | fHBTprocessor->SetBinSize1DFineMesh(x); | |
771 | } | |
772 | /*******************************************************************/ | |
773 | ||
774 | void AliGenHBTprocessor::SetNBins1DCoarseMesh(Int_t n) | |
775 | { | |
776 | //default n =2 | |
777 | //Sets the number of bins in the coarse 1D mesh | |
778 | fN1dCoarse =n; | |
779 | fHBTprocessor->SetNBins1DCoarseMesh(n); | |
780 | } | |
781 | /*******************************************************************/ | |
782 | void AliGenHBTprocessor::SetBinSize1DCoarseMesh(Float_t x) | |
783 | { | |
784 | //default x=0.05 | |
785 | //Sets the bin size in the coarse 1D mesh | |
786 | fBinsize1dCoarse =x; | |
787 | fHBTprocessor->SetBinSize1DCoarseMesh(x); | |
788 | } | |
789 | /*******************************************************************/ | |
790 | ||
791 | void AliGenHBTprocessor::SetNBins3DFineMesh(Int_t n) | |
792 | { | |
793 | //default n = 8 | |
794 | //Sets the number of bins in the 3D mesh | |
795 | fN3dFine =n; | |
796 | fHBTprocessor->SetNBins3DFineMesh(n); | |
797 | } | |
798 | /*******************************************************************/ | |
799 | void AliGenHBTprocessor::SetBinSize3DFineMesh(Float_t x) | |
800 | { | |
801 | //default x=0.01 | |
802 | //Sets the bin size in the 3D mesh | |
803 | fBinsize3dFine =x; | |
804 | fHBTprocessor->SetBinSize3DFineMesh(x); | |
805 | } | |
806 | /*******************************************************************/ | |
807 | ||
808 | void AliGenHBTprocessor::SetNBins3DCoarseMesh(Int_t n) | |
809 | { | |
810 | //default n = 2 | |
811 | //Sets the number of bins in the coarse 3D mesh | |
812 | ||
813 | fN3dCoarse = n; | |
814 | fHBTprocessor->SetNBins3DCoarseMesh(n); | |
815 | } | |
816 | /*******************************************************************/ | |
817 | void AliGenHBTprocessor::SetBinSize3DCoarseMesh(Float_t x) | |
818 | { | |
819 | //default x=0.08 | |
820 | //Sets the bin size in the coarse 3D mesh | |
821 | fBinsize3dCoarse = x; | |
822 | fHBTprocessor->SetBinSize3DCoarseMesh(x); | |
823 | } | |
824 | /*******************************************************************/ | |
825 | ||
826 | void AliGenHBTprocessor::SetNBins3DFineProjectMesh(Int_t n ) | |
827 | { | |
828 | //default n =3 | |
829 | //Sets the number of bins in the fine project mesh | |
830 | fN3dFineProject = n; | |
831 | fHBTprocessor->SetNBins3DFineProjectMesh(n); | |
832 | } | |
88cb7938 | 833 | /*******************************************************************/ |
834 | void AliGenHBTprocessor::SetPrintFull(Int_t flag) | |
835 | { | |
b456eb2e | 836 | //sets the print full flag |
88cb7938 | 837 | fPrintFull = flag; |
838 | fHBTprocessor->SetPrintFull(flag); | |
839 | } | |
840 | ||
841 | ||
842 | /*******************************************************************/ | |
843 | ||
844 | Int_t AliGenHBTprocessor::GetNumberOfEvents() | |
845 | { | |
b456eb2e | 846 | //returns number of available events |
88cb7938 | 847 | AliGenerator* g = gAlice->Generator(); |
848 | AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0; | |
849 | if (cab == 0x0) | |
850 | { | |
851 | Fatal("GetNumberOfEvents","Master Generator is not an AliGenCocktailAfterBurner"); | |
852 | return 0; | |
853 | } | |
854 | return (Int_t)TMath::Ceil(cab->GetNumberOfEvents()/((Float_t)fEventMerge)); | |
855 | } | |
856 | ||
36b81802 | 857 | /*******************************************************************/ |
858 | ||
88cb7938 | 859 | void AliGenHBTprocessor::SetActiveEventNumber(Int_t n) |
860 | { | |
b456eb2e | 861 | //sets the active event |
88cb7938 | 862 | fActiveStack = n*fEventMerge; |
371660fe | 863 | AliDebug(1,Form("Settimg active event %d passed %d",fActiveStack,n)); |
88cb7938 | 864 | } |
865 | /*******************************************************************/ | |
36b81802 | 866 | |
88cb7938 | 867 | Int_t AliGenHBTprocessor::GetNumberOfTracks() |
868 | { | |
b456eb2e | 869 | //returns number of tracks in active event |
88cb7938 | 870 | AliGenerator* g = gAlice->Generator(); |
871 | AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0; | |
872 | if (cab == 0x0) | |
873 | { | |
874 | Fatal("GetNumberOfEvents","Master Generator is not an AliGenCocktailAfterBurner"); | |
875 | return 0; | |
876 | } | |
877 | Int_t n = 0; | |
878 | for (Int_t i = fActiveStack;i < fActiveStack+fEventMerge; i++) | |
879 | { | |
880 | if (i >= GetNumberOfEvents()) break; //protection not to overshoot nb of events | |
881 | AliStack* stack = cab->GetStack(i); | |
882 | if (stack == 0x0) | |
883 | Error("GetNumberOfTracks","There is no stack %d",i); | |
884 | ||
885 | n+=stack->GetNprimary(); | |
886 | } | |
887 | return n; | |
888 | } | |
889 | /*******************************************************************/ | |
890 | ||
891 | void AliGenHBTprocessor::SetNEventsToMerge(Int_t nev) | |
892 | { | |
b456eb2e | 893 | //sets number of events to merge |
88cb7938 | 894 | if (nev > 0 ) fEventMerge = nev; |
895 | } | |
896 | /*******************************************************************/ | |
897 | ||
898 | TParticle* AliGenHBTprocessor::GetTrack(Int_t n) | |
899 | { | |
900 | //returns track that hbtp thinks is n in active event | |
371660fe | 901 | AliDebug(5,Form("n = %d",n)); |
88cb7938 | 902 | AliGenerator* g = gAlice->Generator(); |
903 | AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0; | |
904 | if (cab == 0x0) | |
905 | { | |
906 | Fatal("GetTrackEventIndex","Master Generator is not an AliGenCocktailAfterBurner"); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | Int_t ev, idx; | |
911 | GetTrackEventIndex(n,ev,idx); | |
371660fe | 912 | AliDebug(5,Form("Event = %d Particle = %d",ev,idx)); |
88cb7938 | 913 | if ( (ev<0) || (idx<0) ) |
914 | { | |
915 | Error("GetTrack","GetTrackEventIndex returned error"); | |
916 | return 0x0; | |
917 | } | |
371660fe | 918 | AliDebug(5,Form("Number of Tracks in Event(%d) = %d",ev,cab->GetStack(ev)->GetNprimary())); |
0798b21e | 919 | return cab->GetStack(ev)->Particle(idx);//safe - in case stack does not exist |
88cb7938 | 920 | } |
36b81802 | 921 | /*******************************************************************/ |
922 | ||
88cb7938 | 923 | void AliGenHBTprocessor::GetTrackEventIndex(Int_t n, Int_t &evno, Int_t &index) const |
924 | { | |
925 | //returns event(stack) number and particle index | |
926 | AliGenerator* g = gAlice->Generator(); | |
927 | AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0; | |
928 | if (cab == 0x0) | |
929 | { | |
930 | Fatal("GetTrackEventIndex","Master Generator is not an AliGenCocktailAfterBurner"); | |
931 | return; | |
932 | } | |
933 | ||
934 | evno = -1; | |
935 | index = -1; | |
936 | for (Int_t i = fActiveStack;i < fActiveStack+fEventMerge; i++) | |
937 | { | |
938 | AliStack* stack = cab->GetStack(i); | |
939 | if (stack == 0x0) | |
940 | { | |
941 | Error("GetTrackEventIndex","There is no stack %d",i); | |
942 | return; | |
943 | } | |
944 | ||
945 | Int_t ntracks = stack->GetNprimary(); | |
371660fe | 946 | AliDebug(10,Form("Event %d has %d tracks. n = %d",i,ntracks,n)); |
88cb7938 | 947 | |
948 | if ( ntracks > n) | |
949 | { | |
950 | evno = i; | |
951 | index = n; | |
952 | return ; | |
953 | } | |
954 | else | |
955 | { | |
956 | n-=ntracks; | |
957 | continue; | |
958 | } | |
959 | } | |
960 | Error("GetTrackEventIndex","Could not find given track"); | |
961 | } | |
962 | ||
963 | /*******************************************************************/ | |
964 | /*******************************************************************/ | |
965 | /*******************************************************************/ | |
36b81802 | 966 | |
967 | ||
968 | ||
969 | ||
970 | ||
971 | void AliGenHBTprocessor::DefineParticles() | |
972 | { | |
973 | // | |
974 | // Load standard numbers for GEANT particles and PDG conversion | |
975 | fNPDGCodes = 0; //this is done in the constructor - but in any case ... | |
976 | ||
977 | fPDGCode[fNPDGCodes++]=-99; // 0 = unused location | |
978 | fPDGCode[fNPDGCodes++]=22; // 1 = photon | |
979 | fPDGCode[fNPDGCodes++]=-11; // 2 = positron | |
980 | fPDGCode[fNPDGCodes++]=11; // 3 = electron | |
981 | fPDGCode[fNPDGCodes++]=12; // 4 = neutrino e | |
982 | fPDGCode[fNPDGCodes++]=-13; // 5 = muon + | |
983 | fPDGCode[fNPDGCodes++]=13; // 6 = muon - | |
984 | fPDGCode[fNPDGCodes++]=111; // 7 = pi0 | |
985 | fPDGCode[fNPDGCodes++]=211; // 8 = pi+ | |
986 | fPDGCode[fNPDGCodes++]=-211; // 9 = pi- | |
987 | fPDGCode[fNPDGCodes++]=130; // 10 = Kaon Long | |
988 | fPDGCode[fNPDGCodes++]=321; // 11 = Kaon + | |
989 | fPDGCode[fNPDGCodes++]=-321; // 12 = Kaon - | |
990 | fPDGCode[fNPDGCodes++]=2112; // 13 = Neutron | |
991 | fPDGCode[fNPDGCodes++]=2212; // 14 = Proton | |
992 | fPDGCode[fNPDGCodes++]=-2212; // 15 = Anti Proton | |
993 | fPDGCode[fNPDGCodes++]=310; // 16 = Kaon Short | |
994 | fPDGCode[fNPDGCodes++]=221; // 17 = Eta | |
995 | fPDGCode[fNPDGCodes++]=3122; // 18 = Lambda | |
996 | fPDGCode[fNPDGCodes++]=3222; // 19 = Sigma + | |
997 | fPDGCode[fNPDGCodes++]=3212; // 20 = Sigma 0 | |
998 | fPDGCode[fNPDGCodes++]=3112; // 21 = Sigma - | |
999 | fPDGCode[fNPDGCodes++]=3322; // 22 = Xi0 | |
1000 | fPDGCode[fNPDGCodes++]=3312; // 23 = Xi- | |
1001 | fPDGCode[fNPDGCodes++]=3334; // 24 = Omega- | |
1002 | fPDGCode[fNPDGCodes++]=-2112; // 25 = Anti Proton | |
1003 | fPDGCode[fNPDGCodes++]=-3122; // 26 = Anti Proton | |
1004 | fPDGCode[fNPDGCodes++]=-3222; // 27 = Anti Sigma - | |
1005 | fPDGCode[fNPDGCodes++]=-3212; // 28 = Anti Sigma 0 | |
1006 | fPDGCode[fNPDGCodes++]=-3112; // 29 = Anti Sigma 0 | |
1007 | fPDGCode[fNPDGCodes++]=-3322; // 30 = Anti Xi 0 | |
1008 | fPDGCode[fNPDGCodes++]=-3312; // 31 = Anti Xi + | |
1009 | fPDGCode[fNPDGCodes++]=-3334; // 32 = Anti Omega + | |
1010 | } | |
1011 | ||
1012 | /*******************************************************************/ | |
1013 | Int_t AliGenHBTprocessor::IdFromPDG(Int_t pdg) const | |
1014 | { | |
1015 | // | |
1016 | // Return Geant3 code from PDG and pseudo ENDF code | |
1017 | // | |
1018 | for(Int_t i=0;i<fNPDGCodes;++i) | |
1019 | if(pdg==fPDGCode[i]) return i; | |
1020 | return -1; | |
1021 | } | |
1022 | Int_t AliGenHBTprocessor::PDGFromId(Int_t id) const | |
1023 | { | |
1024 | // | |
1025 | // Return PDG code and pseudo ENDF code from Geant3 code | |
1026 | // | |
1027 | if(id>0 && id<fNPDGCodes) return fPDGCode[id]; | |
1028 | else return -1; | |
1029 | } | |
1030 | Double_t AliGenHBTprocessor::ThetaToEta(Double_t arg) | |
1031 | { | |
1032 | //converts etha(azimuthal angle) to Eta (pseudorapidity). Argument in radians | |
88cb7938 | 1033 | |
1034 | if(arg>= TMath::Pi()) return 708.0;//This number is the biggest wich not crashes exp(x) | |
1035 | if(arg<= 0.0) return -708.0;// | |
1036 | if(arg == TMath::Pi()/2.) return 0.0;// | |
36b81802 | 1037 | |
36b81802 | 1038 | if (arg > 0.0) |
1039 | { | |
88cb7938 | 1040 | return TMath::Log( TMath::Tan(arg/2.)) ; |
36b81802 | 1041 | } |
1042 | else | |
88cb7938 | 1043 | { |
1044 | return -TMath::Log( TMath::Tan(-arg/2.)) ; | |
36b81802 | 1045 | } |
1046 | } | |
1047 | ||
1048 | /*******************************************************************/ | |
1049 | /****** ROUTINES USED FOR COMMUNUCATION ********/ | |
1050 | /******************** WITH FORTRAN ********************/ | |
1051 | /*******************************************************************/ | |
1052 | ||
1053 | #ifndef WIN32 | |
1054 | # define hbtpran hbtpran_ | |
1055 | # define alihbtp_puttrack alihbtp_puttrack_ | |
1056 | # define alihbtp_gettrack alihbtp_gettrack_ | |
1057 | # define alihbtp_getnumberevents alihbtp_getnumberevents_ | |
1058 | # define alihbtp_getnumbertracks alihbtp_getnumbertracks_ | |
1059 | # define alihbtp_initialize alihbtp_initialize_ | |
1060 | # define alihbtp_setactiveeventnumber alihbtp_setactiveeventnumber_ | |
1061 | # define alihbtp_setparameters alihbtp_setparameters_ | |
1062 | # define type_ofCall | |
1063 | ||
1064 | #else | |
1065 | # define hbtpran HBTPRAN | |
1066 | # define alihbtp_puttrack ALIHBTP_PUTTRACK | |
1067 | # define alihbtp_gettrack ALIHBTP_GETTRACK | |
1068 | # define alihbtp_getnumberevents ALIHBTP_GETNUMBEREVENTS | |
1069 | # define alihbtp_getnumbertracks ALIHBTP_GETNUMBERTRACKS | |
1070 | # define alihbtp_initialize ALIHBTP_INITIALIZE | |
1071 | # define alihbtp_setactiveeventnumber ALIHBTP_SETACTIVEEVENTNUMBER | |
1072 | # define alihbtp_setparameters ALIHBTP_SETPARAMETERS | |
1073 | # define type_ofCall _stdcall | |
1074 | #endif | |
1075 | ||
36b81802 | 1076 | /*******************************************************************/ |
1077 | ||
1078 | AliGenCocktailAfterBurner* GetGenerator() | |
1079 | { | |
1080 | // This function has two tasks: | |
1081 | // Check if environment is OK (exist gAlice and generator) | |
1082 | // Returns pointer to genrator | |
1083 | //to be changed with TFolders | |
1084 | ||
1085 | if(!gAlice) | |
1086 | { | |
88cb7938 | 1087 | ::Error("AliGenHBTprocessor.cxx: GetGenerator()", |
1088 | "There is NO gALICE! Check what you are doing!"); | |
1089 | ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()", | |
1090 | "Running HBT Processor without gAlice... Exiting \n"); | |
1091 | return 0x0;//pro forma | |
36b81802 | 1092 | } |
1093 | AliGenerator * gen = gAlice->Generator(); | |
1094 | ||
1095 | if (!gen) | |
1096 | { | |
88cb7938 | 1097 | ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()", |
1098 | "There is no generator in gAlice, exiting\n"); | |
36b81802 | 1099 | return 0x0; |
1100 | } | |
1101 | ||
1102 | //we do not sure actual type of the genetator | |
1103 | //and simple casting is risky - we use ROOT machinery to do safe cast | |
1104 | ||
1105 | TClass* cabclass = AliGenCocktailAfterBurner::Class(); //get AliGenCocktailAfterBurner TClass | |
1106 | TClass* genclass = gen->IsA();//get TClass of the generator we got from galice | |
1107 | //use casting implemented in TClass | |
1108 | //cast gen to cabclass | |
1109 | AliGenCocktailAfterBurner* cab=(AliGenCocktailAfterBurner*)genclass->DynamicCast(cabclass,gen); | |
1110 | ||
1111 | if (cab == 0x0)//if generator that we got is not AliGenCocktailAfterBurner or its descendant we get null | |
1112 | { //then quit with error | |
88cb7938 | 1113 | ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()", |
1114 | "The main Generator is not a AliGenCocktailAfterBurner, exiting\n"); | |
36b81802 | 1115 | return 0x0; |
1116 | } | |
36b81802 | 1117 | return cab; |
36b81802 | 1118 | } |
1119 | /*******************************************************************/ | |
1120 | ||
1121 | AliGenHBTprocessor* GetAliGenHBTprocessor() | |
1122 | { | |
1123 | //returns pointer to the current instance of AliGenHBTprocessor in | |
1124 | //AliGenCocktailAfterBurner (can be more than one) | |
1125 | // | |
1126 | AliGenCocktailAfterBurner* gen = GetGenerator(); | |
1127 | AliGenerator* g = gen->GetCurrentGenerator(); | |
1128 | if(g == 0x0) | |
1129 | { | |
88cb7938 | 1130 | ::Fatal("AliGenHBTprocessor.cxx: GetAliGenHBTprocessor()", |
36b81802 | 1131 | "Can not get the current generator. Exiting"); |
88cb7938 | 1132 | return 0x0;//pro forma |
36b81802 | 1133 | } |
1134 | ||
1135 | TClass* hbtpclass = AliGenHBTprocessor::Class(); //get AliGenCocktailAfterBurner TClass | |
1136 | TClass* gclass = g->IsA();//get TClass of the current generator we got from CAB | |
1137 | AliGenHBTprocessor* hbtp = (AliGenHBTprocessor*)gclass->DynamicCast(hbtpclass,g);//try to cast | |
1138 | if (hbtp == 0x0) | |
1139 | { | |
88cb7938 | 1140 | ::Fatal("AliGenHBTprocessor.cxx: GetAliGenHBTprocessor()", |
1141 | "\nCurrernt generator in AliGenCocktailAfterBurner is not a AliGenHBTprocessor, exiting\n"); | |
36b81802 | 1142 | return 0x0; |
1143 | } | |
1144 | return hbtp; | |
1145 | } | |
1146 | ||
1147 | /*******************************************************************/ | |
1148 | extern "C" void type_ofCall alihbtp_setparameters() | |
1149 | { | |
1150 | //dummy | |
1151 | } | |
1152 | ||
1153 | extern "C" void type_ofCall alihbtp_initialize() | |
1154 | { | |
1155 | //dummy | |
1156 | } | |
1157 | ||
1158 | /*******************************************************************/ | |
1159 | ||
1160 | extern "C" void type_ofCall alihbtp_getnumberevents(Int_t &nev) | |
1161 | { | |
371660fe | 1162 | //passes number of events to the fortran |
b456eb2e | 1163 | if(AliGenHBTprocessor::GetDebug()) |
371660fe | 1164 | AliInfoGeneral("alihbtp_getnumberevents",Form("(%d) ....",nev)); |
88cb7938 | 1165 | |
1166 | AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function | |
1167 | nev = gen->GetNumberOfEvents(); | |
36b81802 | 1168 | |
b456eb2e | 1169 | if(AliGenHBTprocessor::GetDebug()>5) |
371660fe | 1170 | AliInfoGeneral("alihbtp_getnumberevents",Form("EXITED N Ev = %d",nev)); |
36b81802 | 1171 | } |
1172 | ||
1173 | /*******************************************************************/ | |
1174 | ||
1175 | extern "C" void type_ofCall alihbtp_setactiveeventnumber(Int_t & nev) | |
1176 | { | |
1177 | //sets active event in generator (AliGenCocktailAfterBurner) | |
1178 | ||
b456eb2e | 1179 | if(AliGenHBTprocessor::GetDebug()>5) |
88cb7938 | 1180 | ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","(%d)",nev); |
b456eb2e | 1181 | if(AliGenHBTprocessor::GetDebug()>0) |
88cb7938 | 1182 | ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","Asked for event %d",nev-1); |
1183 | ||
1184 | AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function | |
36b81802 | 1185 | |
88cb7938 | 1186 | gen->SetActiveEventNumber(nev - 1); //fortran numerates events from 1 to N |
36b81802 | 1187 | |
b456eb2e | 1188 | if(AliGenHBTprocessor::GetDebug()>5) |
88cb7938 | 1189 | ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","EXITED returned %d",nev); |
36b81802 | 1190 | } |
1191 | /*******************************************************************/ | |
1192 | ||
1193 | extern "C" void type_ofCall alihbtp_getnumbertracks(Int_t &ntracks) | |
1194 | { | |
1195 | //passes number of particles in active event to the fortran | |
b456eb2e | 1196 | if(AliGenHBTprocessor::GetDebug()>5) |
88cb7938 | 1197 | ::Info("AliGenHBTpocessor.cxx: alihbtp_getnumbertracks","(%d)",ntracks); |
36b81802 | 1198 | |
88cb7938 | 1199 | AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function |
36b81802 | 1200 | |
88cb7938 | 1201 | ntracks = gen->GetNumberOfTracks(); |
b456eb2e | 1202 | if(AliGenHBTprocessor::GetDebug()>5) |
88cb7938 | 1203 | ::Info("AliGenHBTpocessor.cxx: alihbtp_getnumbertracks","EXITED Ntracks = %d",ntracks); |
36b81802 | 1204 | } |
1205 | ||
1206 | /*******************************************************************/ | |
1207 | ||
1208 | extern "C" void type_ofCall | |
1209 | alihbtp_puttrack(Int_t & n,Int_t& flag, Float_t& px, | |
1210 | Float_t& py, Float_t& pz, Int_t& geantpid) | |
1211 | { | |
1212 | //sets new parameters (momenta) in track number n | |
1213 | // in the active event | |
1214 | // n - number of the track in active event | |
1215 | // flag - flag of the track | |
1216 | // px,py,pz - momenta | |
1217 | // geantpid - type of the particle - Geant Particle ID | |
1218 | ||
b456eb2e | 1219 | if(AliGenHBTprocessor::GetDebug()>5) |
88cb7938 | 1220 | ::Info("AliGenHBTpocessor.cxx: alihbtp_puttrack","(%d)",n); |
36b81802 | 1221 | |
88cb7938 | 1222 | AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function |
36b81802 | 1223 | |
88cb7938 | 1224 | TParticle * track = gen->GetTrack(n-1); |
1225 | if (track == 0x0) | |
1226 | { | |
1227 | ::Error("AliGenHBTprocessor.cxx","Can not get track from AliGenHBTprocessor"); | |
1228 | return; | |
1229 | } | |
36b81802 | 1230 | |
1231 | //check to be deleted | |
88cb7938 | 1232 | if (geantpid != (gen->IdFromPDG( track->GetPdgCode() ))) |
36b81802 | 1233 | { |
88cb7938 | 1234 | ::Error("AliGenHBTprocessor.cxx: alihbtp_puttrack", |
1235 | "SOMETHING IS GOING BAD:\n GEANTPIDS ARE NOT THE SAME"); | |
36b81802 | 1236 | } |
1237 | ||
b456eb2e | 1238 | if(AliGenHBTprocessor::GetDebug()>0) |
36b81802 | 1239 | if (px != track->Px()) |
88cb7938 | 1240 | ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack", |
1241 | "Px diff. = %f", px - track->Px()); | |
36b81802 | 1242 | |
b456eb2e | 1243 | if(AliGenHBTprocessor::GetDebug()>3) |
88cb7938 | 1244 | ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack", |
1245 | "track->GetPdgCode() --> %d",track->GetPdgCode()); | |
36b81802 | 1246 | |
1247 | ||
1248 | ||
1249 | Float_t m = track->GetMass(); | |
1250 | Float_t e = TMath::Sqrt(m*m+px*px+py*py+pz*pz); | |
1251 | track->SetMomentum(px,py,pz,e); | |
1252 | ||
88cb7938 | 1253 | gen->SetHbtPStatusCode(flag,n-1); |
36b81802 | 1254 | |
b456eb2e | 1255 | if(AliGenHBTprocessor::GetDebug()>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack","EXITED "); |
36b81802 | 1256 | } |
1257 | ||
1258 | /*******************************************************************/ | |
1259 | ||
1260 | extern "C" void type_ofCall | |
1261 | alihbtp_gettrack(Int_t & n,Int_t & flag, Float_t & px, | |
1262 | Float_t & py, Float_t & pz, Int_t & geantpid) | |
1263 | ||
1264 | { | |
1265 | //passes track parameters to the fortran | |
1266 | // n - number of the track in active event | |
1267 | // flag - flag of the track | |
1268 | // px,py,pz - momenta | |
1269 | // geantpid - type of the particle - Geant Particle ID | |
1270 | ||
b456eb2e | 1271 | if(AliGenHBTprocessor::GetDebug()>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_gettrack","(%d)",n); |
36b81802 | 1272 | AliGenHBTprocessor* g = GetAliGenHBTprocessor(); |
88cb7938 | 1273 | |
1274 | TParticle * track = g->GetTrack(n-1); | |
36b81802 | 1275 | |
1276 | flag = g->GetHbtPStatusCode(n-1); | |
1277 | ||
1278 | px = (Float_t)track->Px(); | |
1279 | py = (Float_t)track->Py(); | |
1280 | pz = (Float_t)track->Pz(); | |
1281 | ||
1282 | geantpid = g->IdFromPDG( track->GetPdgCode() ); | |
1283 | ||
b456eb2e | 1284 | if(AliGenHBTprocessor::GetDebug()>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_gettrack","EXITED"); |
36b81802 | 1285 | } |
1286 | ||
1287 | /*******************************************************************/ | |
1288 | extern "C" Float_t type_ofCall hbtpran(Int_t &) | |
1289 | { | |
1290 | //interface to the random number generator | |
b456eb2e | 1291 | return gAliRandom->Rndm(); |
36b81802 | 1292 | } |
1293 | ||
1294 | /*******************************************************************/ | |
1295 | ||
1296 | ||
1297 | /*******************************************************************/ |