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39d810c8 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | // | |
19 | // Generator using the TPythia interface (via AliPythia) | |
20 | // to generate pp collisions. | |
21 | // Using SetNuclei() also nuclear modifications to the structure functions | |
22 | // can be taken into account. This makes, of course, only sense for the | |
23 | // generation of the products of hard processes (heavy flavor, jets ...) | |
24 | // | |
25 | // andreas.morsch@cern.ch | |
26 | // | |
27 | ||
28 | #include <TClonesArray.h> | |
29 | #include <TDatabasePDG.h> | |
30 | #include <TParticle.h> | |
31 | #include <TPDGCode.h> | |
32 | #include <TSystem.h> | |
33 | #include <TTree.h> | |
34 | #include "AliConst.h" | |
35 | #include "AliDecayerPythia.h" | |
36 | #include "AliGenPythiaPlus.h" | |
37 | #include "AliHeader.h" | |
38 | #include "AliGenPythiaEventHeader.h" | |
39 | #include "AliPythiaBase.h" | |
40 | #include "AliPythiaRndm.h" | |
41 | #include "AliRun.h" | |
42 | #include "AliStack.h" | |
43 | #include "AliRunLoader.h" | |
44 | #include "AliMC.h" | |
45 | #include "PyquenCommon.h" | |
46 | ||
47 | ClassImp(AliGenPythiaPlus) | |
48 | ||
49 | ||
50 | AliGenPythiaPlus::AliGenPythiaPlus(): | |
51 | AliGenMC(), | |
52 | fPythia(0), | |
53 | fProcess(kPyCharm), | |
54 | fStrucFunc(kCTEQ5L), | |
39d810c8 | 55 | fKineBias(0.), |
56 | fTrials(0), | |
57 | fTrialsRun(0), | |
58 | fQ(0.), | |
59 | fX1(0.), | |
60 | fX2(0.), | |
61 | fEventTime(0.), | |
62 | fInteractionRate(0.), | |
63 | fTimeWindow(0.), | |
64 | fCurSubEvent(0), | |
65 | fEventsTime(0), | |
66 | fNev(0), | |
67 | fFlavorSelect(0), | |
68 | fXsection(0.), | |
69 | fPtHardMin(0.), | |
70 | fPtHardMax(1.e4), | |
71 | fYHardMin(-1.e10), | |
72 | fYHardMax(1.e10), | |
73 | fGinit(1), | |
74 | fGfinal(1), | |
75 | fHadronisation(1), | |
76 | fNpartons(0), | |
77 | fReadFromFile(0), | |
78 | fQuench(0), | |
79 | fPtKick(1.), | |
80 | fFullEvent(kTRUE), | |
81 | fDecayer(new AliDecayerPythia()), | |
82 | fDebugEventFirst(-1), | |
83 | fDebugEventLast(-1), | |
84 | fEtMinJet(0.), | |
85 | fEtMaxJet(1.e4), | |
86 | fEtaMinJet(-20.), | |
87 | fEtaMaxJet(20.), | |
88 | fPhiMinJet(0.), | |
89 | fPhiMaxJet(2.* TMath::Pi()), | |
90 | fJetReconstruction(kCell), | |
91 | fEtaMinGamma(-20.), | |
92 | fEtaMaxGamma(20.), | |
93 | fPhiMinGamma(0.), | |
94 | fPhiMaxGamma(2. * TMath::Pi()), | |
95 | fPycellEtaMax(2.), | |
96 | fPycellNEta(274), | |
97 | fPycellNPhi(432), | |
98 | fPycellThreshold(0.), | |
99 | fPycellEtSeed(4.), | |
100 | fPycellMinEtJet(10.), | |
101 | fPycellMaxRadius(1.), | |
102 | fStackFillOpt(kFlavorSelection), | |
103 | fFeedDownOpt(kTRUE), | |
104 | fFragmentation(kTRUE), | |
105 | fSetNuclei(kFALSE), | |
106 | fNewMIS(kFALSE), | |
107 | fHFoff(kFALSE), | |
108 | fTriggerParticle(0), | |
109 | fTriggerEta(0.9), | |
110 | fCountMode(kCountAll), | |
111 | fHeader(0), | |
112 | fRL(0), | |
113 | fFileName(0), | |
114 | fFragPhotonInCalo(kFALSE), | |
115 | fPi0InCalo(kFALSE) , | |
116 | fPhotonInCalo(kFALSE), | |
117 | fCheckEMCAL(kFALSE), | |
118 | fCheckPHOS(kFALSE), | |
119 | fCheckPHOSeta(kFALSE), | |
120 | fFragPhotonOrPi0MinPt(0), | |
121 | fPhotonMinPt(0), | |
122 | fPHOSMinPhi(219.), | |
123 | fPHOSMaxPhi(321.), | |
124 | fPHOSEta(0.13), | |
125 | fEMCALMinPhi(79.), | |
126 | fEMCALMaxPhi(191.), | |
75d4f39e | 127 | fEMCALEta(0.71), |
bffc134e | 128 | fItune(-1), |
129 | fInfo(1) | |
39d810c8 | 130 | { |
131 | // Default Constructor | |
e7c989e4 | 132 | fEnergyCMS = 5500.; |
39d810c8 | 133 | SetNuclei(0,0); |
134 | if (!AliPythiaRndm::GetPythiaRandom()) | |
135 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
136 | } | |
137 | ||
138 | AliGenPythiaPlus::AliGenPythiaPlus(AliPythiaBase* pythia) | |
139 | :AliGenMC(-1), | |
140 | fPythia(pythia), | |
141 | fProcess(kPyCharm), | |
142 | fStrucFunc(kCTEQ5L), | |
39d810c8 | 143 | fKineBias(0.), |
144 | fTrials(0), | |
145 | fTrialsRun(0), | |
146 | fQ(0.), | |
147 | fX1(0.), | |
148 | fX2(0.), | |
149 | fEventTime(0.), | |
150 | fInteractionRate(0.), | |
151 | fTimeWindow(0.), | |
152 | fCurSubEvent(0), | |
153 | fEventsTime(0), | |
154 | fNev(0), | |
155 | fFlavorSelect(0), | |
156 | fXsection(0.), | |
157 | fPtHardMin(0.), | |
158 | fPtHardMax(1.e4), | |
159 | fYHardMin(-1.e10), | |
160 | fYHardMax(1.e10), | |
161 | fGinit(kTRUE), | |
162 | fGfinal(kTRUE), | |
163 | fHadronisation(kTRUE), | |
164 | fNpartons(0), | |
165 | fReadFromFile(kFALSE), | |
166 | fQuench(kFALSE), | |
167 | fPtKick(1.), | |
168 | fFullEvent(kTRUE), | |
169 | fDecayer(new AliDecayerPythia()), | |
170 | fDebugEventFirst(-1), | |
171 | fDebugEventLast(-1), | |
172 | fEtMinJet(0.), | |
173 | fEtMaxJet(1.e4), | |
174 | fEtaMinJet(-20.), | |
175 | fEtaMaxJet(20.), | |
176 | fPhiMinJet(0.), | |
177 | fPhiMaxJet(2.* TMath::Pi()), | |
178 | fJetReconstruction(kCell), | |
179 | fEtaMinGamma(-20.), | |
180 | fEtaMaxGamma(20.), | |
181 | fPhiMinGamma(0.), | |
182 | fPhiMaxGamma(2. * TMath::Pi()), | |
183 | fPycellEtaMax(2.), | |
184 | fPycellNEta(274), | |
185 | fPycellNPhi(432), | |
186 | fPycellThreshold(0.), | |
187 | fPycellEtSeed(4.), | |
188 | fPycellMinEtJet(10.), | |
189 | fPycellMaxRadius(1.), | |
190 | fStackFillOpt(kFlavorSelection), | |
191 | fFeedDownOpt(kTRUE), | |
192 | fFragmentation(kTRUE), | |
193 | fSetNuclei(kFALSE), | |
194 | fNewMIS(kFALSE), | |
195 | fHFoff(kFALSE), | |
196 | fTriggerParticle(0), | |
197 | fTriggerEta(0.9), | |
198 | fCountMode(kCountAll), | |
199 | fHeader(0), | |
200 | fRL(0), | |
201 | fFileName(0), | |
202 | fFragPhotonInCalo(kFALSE), | |
203 | fPi0InCalo(kFALSE) , | |
204 | fPhotonInCalo(kFALSE), | |
205 | fCheckEMCAL(kFALSE), | |
206 | fCheckPHOS(kFALSE), | |
207 | fCheckPHOSeta(kFALSE), | |
208 | fFragPhotonOrPi0MinPt(0), | |
209 | fPhotonMinPt(0), | |
210 | fPHOSMinPhi(219.), | |
211 | fPHOSMaxPhi(321.), | |
212 | fPHOSEta(0.13), | |
213 | fEMCALMinPhi(79.), | |
214 | fEMCALMaxPhi(191.), | |
75d4f39e | 215 | fEMCALEta(0.71), |
bffc134e | 216 | fItune(-1), |
217 | fInfo(1) | |
39d810c8 | 218 | { |
219 | // default charm production at 5. 5 TeV | |
220 | // semimuonic decay | |
221 | // structure function GRVHO | |
222 | // | |
e7c989e4 | 223 | fEnergyCMS = 5500.; |
39d810c8 | 224 | fName = "Pythia"; |
225 | fTitle= "Particle Generator using PYTHIA"; | |
226 | SetForceDecay(); | |
227 | // Set random number generator | |
228 | if (!AliPythiaRndm::GetPythiaRandom()) | |
229 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
39d810c8 | 230 | SetNuclei(0,0); |
231 | } | |
232 | ||
233 | AliGenPythiaPlus::~AliGenPythiaPlus() | |
234 | { | |
235 | // Destructor | |
236 | if(fEventsTime) delete fEventsTime; | |
237 | } | |
238 | ||
239 | void AliGenPythiaPlus::SetInteractionRate(Float_t rate,Float_t timewindow) | |
240 | { | |
241 | // Generate pileup using user specified rate | |
242 | fInteractionRate = rate; | |
243 | fTimeWindow = timewindow; | |
244 | GeneratePileup(); | |
245 | } | |
246 | ||
247 | void AliGenPythiaPlus::GeneratePileup() | |
248 | { | |
249 | // Generate sub events time for pileup | |
250 | fEventsTime = 0; | |
251 | if(fInteractionRate == 0.) { | |
252 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
253 | return; | |
254 | } | |
255 | ||
256 | Int_t npart = NumberParticles(); | |
257 | if(npart < 0) { | |
258 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
259 | return; | |
260 | } | |
261 | ||
262 | if(fEventsTime) delete fEventsTime; | |
263 | fEventsTime = new TArrayF(npart); | |
264 | TArrayF &array = *fEventsTime; | |
265 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
266 | array[ipart] = 0.; | |
267 | ||
268 | Float_t eventtime = 0.; | |
269 | while(1) | |
270 | { | |
271 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
272 | if(eventtime > fTimeWindow) break; | |
273 | array.Set(array.GetSize()+1); | |
274 | array[array.GetSize()-1] = eventtime; | |
275 | } | |
276 | ||
277 | eventtime = 0.; | |
278 | while(1) | |
279 | { | |
280 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
281 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
282 | array.Set(array.GetSize()+1); | |
283 | array[array.GetSize()-1] = eventtime; | |
284 | } | |
285 | ||
286 | SetNumberParticles(fEventsTime->GetSize()); | |
287 | } | |
288 | ||
289 | void AliGenPythiaPlus::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, | |
290 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
291 | { | |
292 | // Set pycell parameters | |
293 | fPycellEtaMax = etamax; | |
294 | fPycellNEta = neta; | |
295 | fPycellNPhi = nphi; | |
296 | fPycellThreshold = thresh; | |
297 | fPycellEtSeed = etseed; | |
298 | fPycellMinEtJet = minet; | |
299 | fPycellMaxRadius = r; | |
300 | } | |
301 | ||
302 | ||
303 | ||
304 | void AliGenPythiaPlus::SetEventListRange(Int_t eventFirst, Int_t eventLast) | |
305 | { | |
306 | // Set a range of event numbers, for which a table | |
307 | // of generated particle will be printed | |
308 | fDebugEventFirst = eventFirst; | |
309 | fDebugEventLast = eventLast; | |
310 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
311 | } | |
312 | ||
313 | void AliGenPythiaPlus::Init() | |
314 | { | |
315 | // Initialisation | |
316 | ||
317 | // SetMC(AliPythia::Instance()); | |
318 | // fPythia=(AliPythia*) fMCEvGen; | |
319 | ||
320 | // | |
321 | fParentWeight=1./Float_t(fNpart); | |
322 | // | |
323 | ||
324 | ||
325 | fPythia->SetPtHardRange(fPtHardMin, fPtHardMax); | |
326 | fPythia->SetYHardRange(fYHardMin, fYHardMax); | |
327 | ||
328 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget); | |
329 | // Fragmentation? | |
330 | if (fFragmentation) { | |
331 | fPythia->SetFragmentation(1); | |
332 | } else { | |
333 | fPythia->SetFragmentation(0); | |
334 | } | |
335 | ||
336 | ||
337 | // initial state radiation | |
338 | fPythia->SetInitialAndFinalStateRadiation(fGinit, fGfinal); | |
339 | ||
340 | // pt - kick | |
341 | fPythia->SetIntrinsicKt(fPtKick); | |
342 | ||
343 | if (fReadFromFile) { | |
344 | fRL = AliRunLoader::Open(fFileName, "Partons"); | |
345 | fRL->LoadKinematics(); | |
346 | fRL->LoadHeader(); | |
347 | } else { | |
348 | fRL = 0x0; | |
349 | } | |
350 | // | |
75d4f39e | 351 | fPythia->ProcInit(fProcess, fEnergyCMS, fStrucFunc, fItune); |
39d810c8 | 352 | // Forward Paramters to the AliPythia object |
353 | fDecayer->SetForceDecay(fForceDecay); | |
354 | // Switch off Heavy Flavors on request | |
355 | if (fHFoff) { | |
356 | fPythia->SwitchHFOff(); | |
357 | // Switch off g->QQbar splitting in decay table | |
358 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
359 | } | |
360 | ||
361 | fDecayer->Init(); | |
362 | ||
363 | ||
364 | // Parent and Children Selection | |
365 | switch (fProcess) | |
366 | { | |
367 | case kPyOldUEQ2ordered: | |
368 | case kPyOldUEQ2ordered2: | |
369 | case kPyOldPopcorn: | |
370 | break; | |
371 | case kPyCharm: | |
372 | case kPyCharmUnforced: | |
373 | case kPyCharmPbPbMNR: | |
374 | case kPyCharmpPbMNR: | |
375 | case kPyCharmppMNR: | |
376 | case kPyCharmppMNRwmi: | |
64da86aa | 377 | case kPyCharmPWHG: |
39d810c8 | 378 | fParentSelect[0] = 411; |
379 | fParentSelect[1] = 421; | |
380 | fParentSelect[2] = 431; | |
381 | fParentSelect[3] = 4122; | |
9ccc3d0e | 382 | fParentSelect[4] = 4232; |
383 | fParentSelect[5] = 4132; | |
384 | fParentSelect[6] = 4332; | |
39d810c8 | 385 | fFlavorSelect = 4; |
386 | break; | |
387 | case kPyD0PbPbMNR: | |
388 | case kPyD0pPbMNR: | |
389 | case kPyD0ppMNR: | |
390 | fParentSelect[0] = 421; | |
391 | fFlavorSelect = 4; | |
392 | break; | |
393 | case kPyDPlusPbPbMNR: | |
394 | case kPyDPluspPbMNR: | |
395 | case kPyDPlusppMNR: | |
396 | fParentSelect[0] = 411; | |
397 | fFlavorSelect = 4; | |
398 | break; | |
399 | case kPyDPlusStrangePbPbMNR: | |
400 | case kPyDPlusStrangepPbMNR: | |
401 | case kPyDPlusStrangeppMNR: | |
402 | fParentSelect[0] = 431; | |
403 | fFlavorSelect = 4; | |
404 | break; | |
68504d42 | 405 | case kPyLambdacppMNR: |
406 | fParentSelect[0] = 4122; | |
407 | fFlavorSelect = 4; | |
408 | break; | |
39d810c8 | 409 | case kPyBeauty: |
70574ff8 | 410 | case kPyBeautyJets: |
39d810c8 | 411 | case kPyBeautyPbPbMNR: |
412 | case kPyBeautypPbMNR: | |
413 | case kPyBeautyppMNR: | |
414 | case kPyBeautyppMNRwmi: | |
64da86aa | 415 | case kPyBeautyPWHG: |
39d810c8 | 416 | fParentSelect[0]= 511; |
417 | fParentSelect[1]= 521; | |
418 | fParentSelect[2]= 531; | |
419 | fParentSelect[3]= 5122; | |
420 | fParentSelect[4]= 5132; | |
421 | fParentSelect[5]= 5232; | |
422 | fParentSelect[6]= 5332; | |
423 | fFlavorSelect = 5; | |
424 | break; | |
425 | case kPyBeautyUnforced: | |
426 | fParentSelect[0] = 511; | |
427 | fParentSelect[1] = 521; | |
428 | fParentSelect[2] = 531; | |
429 | fParentSelect[3] = 5122; | |
430 | fParentSelect[4] = 5132; | |
431 | fParentSelect[5] = 5232; | |
432 | fParentSelect[6] = 5332; | |
433 | fFlavorSelect = 5; | |
434 | break; | |
435 | case kPyJpsiChi: | |
436 | case kPyJpsi: | |
437 | fParentSelect[0] = 443; | |
438 | break; | |
0bd3d7c5 | 439 | case kPyMbAtlasTuneMC09: |
39d810c8 | 440 | case kPyMbDefault: |
441 | case kPyMb: | |
04081a91 | 442 | case kPyMbWithDirectPhoton: |
39d810c8 | 443 | case kPyMbNonDiffr: |
444 | case kPyMbMSEL1: | |
445 | case kPyJets: | |
64da86aa | 446 | case kPyJetsPWHG: |
39d810c8 | 447 | case kPyDirectGamma: |
448 | case kPyLhwgMb: | |
449 | break; | |
450 | case kPyW: | |
451 | case kPyZ: | |
9a8774a1 | 452 | case kPyMBRSingleDiffraction: |
453 | case kPyMBRDoubleDiffraction: | |
454 | case kPyMBRCentralDiffraction: | |
39d810c8 | 455 | break; |
456 | } | |
457 | // | |
458 | // | |
459 | // JetFinder for Trigger | |
460 | // | |
461 | // Configure detector (EMCAL like) | |
462 | // | |
463 | fPythia->SetPycellParameters(fPycellEtaMax,fPycellNEta, fPycellNPhi, | |
464 | fPycellThreshold, fPycellEtSeed, | |
465 | fPycellMinEtJet, fPycellMaxRadius); | |
466 | // | |
467 | // This counts the total number of calls to Pyevnt() per run. | |
468 | fTrialsRun = 0; | |
469 | fQ = 0.; | |
470 | fX1 = 0.; | |
471 | fX2 = 0.; | |
472 | fNev = 0 ; | |
473 | // | |
474 | // | |
475 | // | |
476 | AliGenMC::Init(); | |
477 | // | |
478 | // | |
479 | // | |
480 | if (fSetNuclei) { | |
481 | fDyBoost = 0; | |
482 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
483 | } | |
484 | ||
485 | if (fQuench) { | |
486 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0, 0.97, 30); | |
487 | } | |
488 | ||
489 | // fPythia->SetPARJ(200, 0.0); | |
490 | ||
491 | // if (fQuench == 3) { | |
492 | // // Nestor's change of the splittings | |
493 | // fPythia->SetPARJ(200, 0.8); | |
494 | // fPythia->SetMSTJ(41, 1); // QCD radiation only | |
495 | // fPythia->SetMSTJ(42, 2); // angular ordering | |
496 | // fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
497 | // fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
498 | // fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
499 | // fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
500 | // } | |
501 | } | |
502 | ||
503 | void AliGenPythiaPlus::Generate() | |
504 | { | |
505 | // Generate one event | |
506 | ||
507 | fDecayer->ForceDecay(); | |
508 | ||
b2b19810 | 509 | Double_t polar[3] = {0,0,0}; |
510 | Double_t origin[3] = {0,0,0}; | |
511 | Double_t p[4]; | |
39d810c8 | 512 | // converts from mm/c to s |
513 | const Float_t kconv=0.001/2.999792458e8; | |
514 | // | |
515 | Int_t nt=0; | |
516 | Int_t jev=0; | |
517 | Int_t j, kf; | |
518 | fTrials=0; | |
519 | fEventTime = 0.; | |
520 | ||
521 | ||
522 | ||
523 | // Set collision vertex position | |
524 | if (fVertexSmear == kPerEvent) Vertex(); | |
525 | ||
526 | // event loop | |
527 | while(1) | |
528 | { | |
529 | // | |
530 | // Produce event | |
531 | // | |
532 | // | |
533 | // Switch hadronisation off | |
534 | // | |
535 | // fPythia->SwitchHadronisationOff(); | |
536 | // | |
537 | // Either produce new event or read partons from file | |
538 | // | |
539 | if (!fReadFromFile) { | |
540 | if (!fNewMIS) { | |
541 | fPythia->GenerateEvent(); | |
542 | } else { | |
543 | fPythia->GenerateMIEvent(); | |
544 | } | |
545 | fNpartons = fPythia->GetNumberOfParticles(); | |
546 | } else { | |
33c3c91a | 547 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
548 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
39d810c8 | 549 | fPythia->SetNumberOfParticles(0); |
550 | fPythia->LoadEvent(fRL->Stack(), 0 , 1); | |
551 | fPythia->EditEventList(21); | |
552 | } | |
553 | ||
554 | // | |
555 | // Run quenching routine | |
556 | // | |
557 | if (fQuench == 1) { | |
558 | fPythia->Quench(); | |
559 | } else if (fQuench == 2){ | |
560 | fPythia->Pyquen(208., 0, 0.); | |
561 | } else if (fQuench == 3) { | |
562 | // Quenching is via multiplicative correction of the splittings | |
563 | } | |
564 | ||
565 | // | |
566 | // Switch hadronisation on | |
567 | // | |
568 | // fPythia->SwitchHadronisationOn(); | |
569 | // | |
570 | // .. and perform hadronisation | |
571 | // printf("Calling hadronisation %d\n", fPythia->GetN()); | |
572 | // fPythia->HadronizeEvent(); | |
573 | fTrials++; | |
8507138f | 574 | fPythia->GetParticles(&fParticles); |
39d810c8 | 575 | Boost(); |
576 | // | |
577 | // | |
578 | // | |
579 | Int_t i; | |
580 | ||
581 | fNprimaries = 0; | |
8507138f | 582 | Int_t np = fParticles.GetEntriesFast(); |
39d810c8 | 583 | |
584 | if (np == 0) continue; | |
585 | // | |
586 | ||
587 | // | |
588 | Int_t* pParent = new Int_t[np]; | |
589 | Int_t* pSelected = new Int_t[np]; | |
590 | Int_t* trackIt = new Int_t[np]; | |
591 | for (i = 0; i < np; i++) { | |
592 | pParent[i] = -1; | |
593 | pSelected[i] = 0; | |
594 | trackIt[i] = 0; | |
595 | } | |
596 | ||
597 | Int_t nc = 0; // Total n. of selected particles | |
598 | Int_t nParents = 0; // Selected parents | |
599 | Int_t nTkbles = 0; // Trackable particles | |
600 | if (fProcess != kPyMbDefault && | |
601 | fProcess != kPyMb && | |
04081a91 | 602 | fProcess != kPyMbWithDirectPhoton && |
39d810c8 | 603 | fProcess != kPyJets && |
604 | fProcess != kPyDirectGamma && | |
605 | fProcess != kPyMbNonDiffr && | |
606 | fProcess != kPyMbMSEL1 && | |
607 | fProcess != kPyW && | |
608 | fProcess != kPyZ && | |
609 | fProcess != kPyCharmppMNRwmi && | |
64da86aa | 610 | fProcess != kPyBeautyppMNRwmi && |
611 | fProcess != kPyJetsPWHG && | |
612 | fProcess != kPyCharmPWHG && | |
613 | fProcess != kPyBeautyPWHG) { | |
39d810c8 | 614 | |
615 | for (i = 0; i < np; i++) { | |
8507138f | 616 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 617 | Int_t ks = iparticle->GetStatusCode(); |
618 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
619 | // No initial state partons | |
620 | if (ks==21) continue; | |
621 | // | |
622 | // Heavy Flavor Selection | |
623 | // | |
624 | // quark ? | |
625 | kf = TMath::Abs(kf); | |
626 | Int_t kfl = kf; | |
627 | // Resonance | |
628 | ||
629 | if (kfl > 100000) kfl %= 100000; | |
630 | if (kfl > 10000) kfl %= 10000; | |
631 | // meson ? | |
632 | if (kfl > 10) kfl/=100; | |
633 | // baryon | |
634 | if (kfl > 10) kfl/=10; | |
635 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
636 | Int_t kfMo = 0; | |
637 | // | |
638 | // Establish mother daughter relation between heavy quarks and mesons | |
639 | // | |
640 | if (kf >= fFlavorSelect && kf <= 6) { | |
641 | Int_t idau = (fPythia->Version() == 6) ? (iparticle->GetFirstDaughter() - 1) :(iparticle->GetFirstDaughter()); | |
642 | if (idau > -1) { | |
8507138f | 643 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
39d810c8 | 644 | Int_t pdgD = daughter->GetPdgCode(); |
645 | if (pdgD == 91 || pdgD == 92) { | |
646 | Int_t jmin = (fPythia->Version() == 6) ? (daughter->GetFirstDaughter() - 1) : (daughter->GetFirstDaughter()); | |
647 | Int_t jmax = (fPythia->Version() == 6) ? (daughter->GetLastDaughter() - 1) : (daughter->GetLastDaughter()); | |
648 | ||
2ab330c9 | 649 | for (Int_t jp = jmin; jp <= jmax; jp++) |
650 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
39d810c8 | 651 | } // is string or cluster |
652 | } // has daughter | |
653 | } // heavy quark | |
654 | ||
655 | ||
656 | if (ipa > -1) { | |
8507138f | 657 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
39d810c8 | 658 | kfMo = TMath::Abs(mother->GetPdgCode()); |
659 | } | |
660 | ||
661 | // What to keep in Stack? | |
662 | Bool_t flavorOK = kFALSE; | |
663 | Bool_t selectOK = kFALSE; | |
664 | if (fFeedDownOpt) { | |
665 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; | |
666 | } else { | |
667 | if (kfl > fFlavorSelect) { | |
668 | nc = -1; | |
669 | break; | |
670 | } | |
671 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
672 | } | |
673 | switch (fStackFillOpt) { | |
674 | case kFlavorSelection: | |
675 | selectOK = kTRUE; | |
676 | break; | |
677 | case kParentSelection: | |
678 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; | |
679 | break; | |
680 | } | |
681 | if (flavorOK && selectOK) { | |
682 | // | |
683 | // Heavy flavor hadron or quark | |
684 | // | |
685 | // Kinematic seletion on final state heavy flavor mesons | |
686 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
687 | { | |
688 | continue; | |
689 | } | |
690 | pSelected[i] = 1; | |
691 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
692 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
693 | } else { | |
694 | // Kinematic seletion on decay products | |
695 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
696 | && !KinematicSelection(iparticle, 1)) | |
697 | { | |
698 | continue; | |
699 | } | |
700 | // | |
701 | // Decay products | |
702 | // Select if mother was selected and is not tracked | |
703 | ||
704 | if (pSelected[ipa] && | |
705 | !trackIt[ipa] && // mother will be tracked ? | |
706 | kfMo != 5 && // mother is b-quark, don't store fragments | |
707 | kfMo != 4 && // mother is c-quark, don't store fragments | |
708 | kf != 92) // don't store string | |
709 | { | |
710 | // | |
711 | // Semi-stable or de-selected: diselect decay products: | |
712 | // | |
713 | // | |
714 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
715 | { | |
716 | Int_t ipF = iparticle->GetFirstDaughter(); | |
717 | Int_t ipL = iparticle->GetLastDaughter(); | |
718 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
719 | } | |
720 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
721 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
722 | } | |
723 | } | |
724 | if (pSelected[i] == -1) pSelected[i] = 0; | |
725 | if (!pSelected[i]) continue; | |
726 | // Count quarks only if you did not include fragmentation | |
727 | if (fFragmentation && kf <= 10) continue; | |
728 | ||
729 | nc++; | |
730 | // Decision on tracking | |
731 | trackIt[i] = 0; | |
732 | // | |
733 | // Track final state particle | |
734 | if (ks == 1) trackIt[i] = 1; | |
735 | // Track semi-stable particles | |
736 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; | |
737 | // Track particles selected by process if undecayed. | |
738 | if (fForceDecay == kNoDecay) { | |
739 | if (ParentSelected(kf)) trackIt[i] = 1; | |
740 | } else { | |
741 | if (ParentSelected(kf)) trackIt[i] = 0; | |
742 | } | |
743 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
744 | // | |
745 | // | |
746 | ||
747 | } // particle selection loop | |
748 | if (nc > 0) { | |
749 | for (i = 0; i < np; i++) { | |
750 | if (!pSelected[i]) continue; | |
8507138f | 751 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 752 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
753 | Int_t ks = iparticle->GetStatusCode(); | |
754 | p[0] = iparticle->Px(); | |
755 | p[1] = iparticle->Py(); | |
756 | p[2] = iparticle->Pz(); | |
757 | p[3] = iparticle->Energy(); | |
758 | ||
759 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] | |
760 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
761 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
762 | ||
21391258 | 763 | Float_t tof = fTime + kconv*iparticle->T(); |
39d810c8 | 764 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; |
765 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
766 | ||
767 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
768 | p[0], p[1], p[2], p[3], | |
769 | origin[0], origin[1], origin[2], tof, | |
770 | polar[0], polar[1], polar[2], | |
771 | kPPrimary, nt, 1., ks); | |
772 | pParent[i] = nt; | |
773 | KeepTrack(nt); | |
774 | fNprimaries++; | |
775 | } // PushTrack loop | |
776 | } | |
777 | } else { | |
778 | nc = GenerateMB(); | |
779 | } // mb ? | |
780 | ||
781 | GetSubEventTime(); | |
782 | ||
783 | delete[] pParent; | |
784 | delete[] pSelected; | |
785 | delete[] trackIt; | |
786 | ||
787 | if (nc > 0) { | |
788 | switch (fCountMode) { | |
789 | case kCountAll: | |
790 | // printf(" Count all \n"); | |
791 | jev += nc; | |
792 | break; | |
793 | case kCountParents: | |
794 | // printf(" Count parents \n"); | |
795 | jev += nParents; | |
796 | break; | |
797 | case kCountTrackables: | |
798 | // printf(" Count trackable \n"); | |
799 | jev += nTkbles; | |
800 | break; | |
801 | } | |
802 | if (jev >= fNpart || fNpart == -1) { | |
803 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
bffc134e | 804 | if (fInfo) fPythia->GetXandQ(fX1, fX2, fQ); |
39d810c8 | 805 | fTrialsRun += fTrials; |
806 | fNev++; | |
807 | MakeHeader(); | |
808 | break; | |
809 | } | |
810 | } | |
811 | } // event loop | |
812 | SetHighWaterMark(nt); | |
813 | // Adjust weight due to kinematic selection | |
814 | // AdjustWeights(); | |
815 | // get cross-section | |
816 | fXsection = fPythia->GetXSection(); | |
817 | } | |
818 | ||
819 | Int_t AliGenPythiaPlus::GenerateMB() | |
820 | { | |
821 | // | |
822 | // Min Bias selection and other global selections | |
823 | // | |
824 | Int_t i, kf, nt, iparent; | |
825 | Int_t nc = 0; | |
826 | Float_t p[4]; | |
827 | Float_t polar[3] = {0,0,0}; | |
828 | Float_t origin[3] = {0,0,0}; | |
829 | // converts from mm/c to s | |
830 | const Float_t kconv = 0.001 / 2.999792458e8; | |
831 | ||
8507138f | 832 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
39d810c8 | 833 | |
834 | Int_t* pParent = new Int_t[np]; | |
835 | for (i=0; i< np; i++) pParent[i] = -1; | |
64da86aa | 836 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyJetsPWHG || fProcess == kPyCharmPWHG || fProcess == kPyBeautyPWHG ) { |
8507138f | 837 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
838 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
39d810c8 | 839 | if (!CheckTrigger(jet1, jet2)) { |
840 | delete [] pParent; | |
841 | return 0; | |
842 | } | |
843 | } | |
844 | ||
845 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL | |
64da86aa | 846 | if ((fProcess == kPyJets || fProcess == kPyJetsPWHG) && (fFragPhotonInCalo || fPi0InCalo) ) { |
39d810c8 | 847 | |
848 | Bool_t ok = kFALSE; | |
849 | ||
850 | Int_t pdg = 0; | |
851 | if (fFragPhotonInCalo) pdg = 22 ; // Photon | |
852 | else if (fPi0InCalo) pdg = 111 ; // Pi0 | |
853 | ||
854 | for (i=0; i< np; i++) { | |
8507138f | 855 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 856 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
857 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ | |
858 | Int_t imother = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
8507138f | 859 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
39d810c8 | 860 | if(pdg == 111 || |
861 | (pdg == 22 && pmother->GetStatusCode() != 11))//No photon from hadron decay | |
862 | { | |
863 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
864 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
865 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || | |
866 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
867 | ok =kTRUE; | |
868 | } | |
869 | } | |
870 | } | |
1ee02229 | 871 | if(!ok){ |
872 | delete [] pParent; | |
873 | return 0; | |
874 | } | |
39d810c8 | 875 | } |
876 | ||
877 | ||
878 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
64da86aa | 879 | if ((fProcess == kPyJets || fProcess == kPyJetsPWHG || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ |
39d810c8 | 880 | |
881 | Bool_t okd = kFALSE; | |
882 | ||
883 | Int_t pdg = 22; | |
884 | Int_t iphcand = -1; | |
885 | for (i=0; i< np; i++) { | |
8507138f | 886 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 887 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
888 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
889 | ||
890 | if(iparticle->GetStatusCode() == 1 | |
891 | && iparticle->GetPdgCode() == pdg | |
892 | && iparticle->Pt() > fPhotonMinPt | |
893 | && eta < fPHOSEta){ | |
894 | ||
895 | // first check if the photon is in PHOS phi | |
896 | if(IsInPHOS(phi,eta)){ | |
897 | okd = kTRUE; | |
898 | break; | |
899 | } | |
900 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
901 | ||
902 | } | |
903 | } | |
904 | ||
905 | if(!okd && iphcand != -1) // execute rotation in phi | |
906 | RotatePhi(iphcand,okd); | |
907 | ||
92847124 | 908 | if(!okd) { |
909 | delete[] pParent; | |
910 | return 0; | |
911 | } | |
39d810c8 | 912 | } |
913 | ||
914 | if (fTriggerParticle) { | |
915 | Bool_t triggered = kFALSE; | |
916 | for (i = 0; i < np; i++) { | |
8507138f | 917 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 918 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
919 | if (kf != fTriggerParticle) continue; | |
920 | if (iparticle->Pt() == 0.) continue; | |
921 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
922 | triggered = kTRUE; | |
923 | break; | |
924 | } | |
925 | if (!triggered) { | |
926 | delete [] pParent; | |
927 | return 0; | |
928 | } | |
929 | } | |
930 | ||
931 | ||
932 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
933 | // in fYMin < y < fYMax | |
934 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi) { | |
9ccc3d0e | 935 | TParticle *partCheck; |
936 | TParticle *mother; | |
39d810c8 | 937 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 938 | Bool_t theChild=kFALSE; |
939 | Float_t y; | |
940 | Int_t pdg,mpdg,mpdgUpperFamily; | |
39d810c8 | 941 | for(i=0; i<np; i++) { |
9ccc3d0e | 942 | partCheck = (TParticle*)fParticles.At(i); |
943 | pdg = partCheck->GetPdgCode(); | |
944 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
945 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
946 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
947 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
948 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
949 | } | |
950 | ||
951 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { | |
952 | Int_t mi = partCheck->GetFirstMother() - 1; | |
953 | if(mi<0) continue; | |
954 | mother = (TParticle*)fParticles.At(mi); | |
955 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 956 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 957 | if ( ParentSelected(mpdg) || |
958 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
959 | if (KinematicSelection(partCheck,1)) { | |
960 | theChild=kTRUE; | |
961 | } | |
962 | } | |
963 | } | |
39d810c8 | 964 | } |
9ccc3d0e | 965 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
39d810c8 | 966 | delete[] pParent; |
967 | return 0; | |
968 | } | |
9ccc3d0e | 969 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
970 | delete[] pParent; | |
971 | return 0; | |
972 | } | |
973 | ||
39d810c8 | 974 | } |
975 | ||
976 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff | |
977 | if ( (fProcess == kPyW || | |
978 | fProcess == kPyZ || | |
979 | fProcess == kPyMbDefault || | |
980 | fProcess == kPyMb || | |
04081a91 | 981 | fProcess == kPyMbWithDirectPhoton || |
39d810c8 | 982 | fProcess == kPyMbNonDiffr) |
983 | && (fCutOnChild == 1) ) { | |
984 | if ( !CheckKinematicsOnChild() ) { | |
985 | delete[] pParent; | |
986 | return 0; | |
987 | } | |
988 | } | |
989 | ||
990 | ||
991 | for (i = 0; i < np; i++) { | |
992 | Int_t trackIt = 0; | |
8507138f | 993 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 994 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
995 | Int_t ks = iparticle->GetStatusCode(); | |
996 | Int_t km = iparticle->GetFirstMother(); | |
997 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
998 | (ks != 1) || | |
64da86aa | 999 | ((fProcess == kPyJets || fProcess == kPyJetsPWHG) && ks == 21 && km == 0 && i>1)) { |
39d810c8 | 1000 | nc++; |
1001 | if (ks == 1) trackIt = 1; | |
1002 | ||
1003 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
1004 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
1005 | if (ipa >= np) fPythia->EventListing(); | |
1006 | ||
1007 | // | |
1008 | // store track information | |
1009 | p[0] = iparticle->Px(); | |
1010 | p[1] = iparticle->Py(); | |
1011 | p[2] = iparticle->Pz(); | |
1012 | p[3] = iparticle->Energy(); | |
1013 | ||
1014 | ||
1015 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] | |
1016 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1017 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1018 | ||
21391258 | 1019 | Float_t tof = fTime + fEventTime + kconv * iparticle->T(); |
39d810c8 | 1020 | |
1021 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1022 | p[0], p[1], p[2], p[3], | |
1023 | origin[0], origin[1], origin[2], tof, | |
1024 | polar[0], polar[1], polar[2], | |
1025 | kPPrimary, nt, 1., ks); | |
1026 | fNprimaries++; | |
1027 | ||
1028 | ||
1029 | // | |
1030 | // Special Treatment to store color-flow | |
1031 | // | |
3e54fb8c | 1032 | /* |
39d810c8 | 1033 | if (ks == 3 || ks == 13 || ks == 14) { |
1034 | TParticle* particle = 0; | |
1035 | if (fStack) { | |
1036 | particle = fStack->Particle(nt); | |
1037 | } else { | |
33c3c91a | 1038 | particle = AliRunLoader::Instance()->Stack()->Particle(nt); |
39d810c8 | 1039 | } |
3e54fb8c | 1040 | particle->SetFirstDaughter(fPythia->GetK(2, i)); |
1041 | particle->SetLastDaughter(fPythia->GetK(3, i)); | |
39d810c8 | 1042 | } |
3e54fb8c | 1043 | */ |
39d810c8 | 1044 | KeepTrack(nt); |
1045 | pParent[i] = nt; | |
1046 | SetHighWaterMark(nt); | |
1047 | ||
1048 | } // select particle | |
1049 | } // particle loop | |
1050 | ||
1051 | delete[] pParent; | |
1052 | ||
1053 | return 1; | |
1054 | } | |
1055 | ||
1056 | ||
1057 | void AliGenPythiaPlus::FinishRun() | |
1058 | { | |
1059 | // Print x-section summary | |
1060 | fPythia->PrintStatistics(); | |
1061 | ||
1062 | if (fNev > 0.) { | |
1063 | fQ /= fNev; | |
1064 | fX1 /= fNev; | |
1065 | fX2 /= fNev; | |
1066 | } | |
1067 | ||
1068 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); | |
1069 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
1070 | } | |
1071 | ||
1072 | void AliGenPythiaPlus::AdjustWeights() const | |
1073 | { | |
1074 | // Adjust the weights after generation of all events | |
1075 | // | |
1076 | if (gAlice) { | |
1077 | TParticle *part; | |
1078 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1079 | for (Int_t i=0; i<ntrack; i++) { | |
1080 | part= gAlice->GetMCApp()->Particle(i); | |
1081 | part->SetWeight(part->GetWeight()*fKineBias); | |
1082 | } | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | void AliGenPythiaPlus::SetNuclei(Int_t a1, Int_t a2) | |
1087 | { | |
1088 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1089 | ||
1090 | fAProjectile = a1; | |
1091 | fATarget = a2; | |
1092 | fSetNuclei = kTRUE; | |
1093 | } | |
1094 | ||
1095 | ||
1096 | void AliGenPythiaPlus::MakeHeader() | |
1097 | { | |
1098 | // | |
1099 | // Make header for the simulated event | |
1100 | // | |
1101 | if (gAlice) { | |
1102 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
1103 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->EventListing(); | |
1104 | } | |
1105 | ||
1106 | // Builds the event header, to be called after each event | |
1107 | if (fHeader) delete fHeader; | |
1108 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
1109 | // | |
1110 | // Event type | |
1111 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->ProcessCode()); | |
1112 | // | |
1113 | // Number of trials | |
1114 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); | |
1115 | // | |
1116 | // Event Vertex | |
1117 | fHeader->SetPrimaryVertex(fVertex); | |
21391258 | 1118 | fHeader->SetInteractionTime(fTime+fEventTime); |
39d810c8 | 1119 | // |
1120 | // Number of primaries | |
1121 | fHeader->SetNProduced(fNprimaries); | |
1122 | // | |
1123 | // Jets that have triggered | |
1124 | ||
64da86aa | 1125 | if (fProcess == kPyJets || fProcess == kPyJetsPWHG) |
39d810c8 | 1126 | { |
1127 | Int_t ntrig, njet; | |
1128 | Float_t jets[4][10]; | |
1129 | GetJets(njet, ntrig, jets); | |
1130 | ||
1131 | ||
1132 | for (Int_t i = 0; i < ntrig; i++) { | |
1133 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], | |
1134 | jets[3][i]); | |
1135 | } | |
1136 | } | |
1137 | // | |
1138 | // Copy relevant information from external header, if present. | |
1139 | // | |
1140 | Float_t uqJet[4]; | |
1141 | ||
1142 | if (fRL) { | |
1143 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1144 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1145 | { | |
1146 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1147 | ||
1148 | ||
1149 | exHeader->TriggerJet(i, uqJet); | |
1150 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1151 | } | |
1152 | } | |
1153 | // | |
1154 | // Store quenching parameters | |
1155 | // | |
1156 | if (fQuench){ | |
3e54fb8c | 1157 | Double_t z[4] = {0.}; |
1158 | Double_t xp = 0.; | |
1159 | Double_t yp = 0.; | |
39d810c8 | 1160 | if (fQuench == 1) { |
1161 | // Pythia::Quench() | |
1162 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1163 | } else { | |
1164 | // Pyquen | |
1165 | Double_t r1 = PARIMP.rb1; | |
1166 | Double_t r2 = PARIMP.rb2; | |
1167 | Double_t b = PARIMP.b1; | |
1168 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1169 | Double_t phi = PARIMP.psib1; | |
1170 | xp = r * TMath::Cos(phi); | |
1171 | yp = r * TMath::Sin(phi); | |
1172 | ||
1173 | } | |
1174 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); | |
1175 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1176 | } | |
1177 | // | |
1178 | // Store pt^hard | |
1179 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetPtHard()); | |
1180 | // | |
1181 | // Pass header | |
1182 | // | |
1183 | AddHeader(fHeader); | |
1184 | fHeader = 0x0; | |
1185 | } | |
1186 | ||
c2fc9d31 | 1187 | Bool_t AliGenPythiaPlus::CheckTrigger(const TParticle* jet1, const TParticle* jet2) |
39d810c8 | 1188 | { |
1189 | // Check the kinematic trigger condition | |
1190 | // | |
1191 | Double_t eta[2]; | |
1192 | eta[0] = jet1->Eta(); | |
1193 | eta[1] = jet2->Eta(); | |
1194 | Double_t phi[2]; | |
1195 | phi[0] = jet1->Phi(); | |
1196 | phi[1] = jet2->Phi(); | |
1197 | Int_t pdg[2]; | |
1198 | pdg[0] = jet1->GetPdgCode(); | |
1199 | pdg[1] = jet2->GetPdgCode(); | |
1200 | Bool_t triggered = kFALSE; | |
1201 | ||
64da86aa | 1202 | if (fProcess == kPyJets || fProcess == kPyJetsPWHG) { |
39d810c8 | 1203 | Int_t njets = 0; |
1204 | Int_t ntrig = 0; | |
1205 | Float_t jets[4][10]; | |
1206 | // | |
1207 | // Use Pythia clustering on parton level to determine jet axis | |
1208 | // | |
1209 | GetJets(njets, ntrig, jets); | |
1210 | ||
1211 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; | |
1212 | // | |
1213 | } else { | |
1214 | Int_t ij = 0; | |
1215 | Int_t ig = 1; | |
1216 | if (pdg[0] == kGamma) { | |
1217 | ij = 1; | |
1218 | ig = 0; | |
1219 | } | |
1220 | //Check eta range first... | |
1221 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1222 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1223 | { | |
1224 | //Eta is okay, now check phi range | |
1225 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1226 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1227 | { | |
1228 | triggered = kTRUE; | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | return triggered; | |
1233 | } | |
1234 | ||
1235 | ||
1236 | ||
1237 | Bool_t AliGenPythiaPlus::CheckKinematicsOnChild(){ | |
1238 | // | |
1239 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1240 | // | |
1241 | Bool_t checking = kFALSE; | |
1242 | Int_t j, kcode, ks, km; | |
1243 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1244 | Int_t numberOfAcceptedParticles = 1; | |
1245 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1246 | Int_t npart = fParticles.GetEntriesFast(); |
39d810c8 | 1247 | |
1248 | for (j = 0; j<npart; j++) { | |
8507138f | 1249 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
39d810c8 | 1250 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1251 | ks = jparticle->GetStatusCode(); | |
1252 | km = jparticle->GetFirstMother(); | |
1253 | ||
1254 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1255 | nPartAcc++; | |
1256 | } | |
1257 | if( numberOfAcceptedParticles <= nPartAcc){ | |
1258 | checking = kTRUE; | |
1259 | break; | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | return checking; | |
1264 | } | |
1265 | ||
1266 | void AliGenPythiaPlus::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) | |
1267 | { | |
1268 | // | |
1269 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1270 | // | |
1271 | // | |
1272 | // | |
1273 | // Save jets | |
1274 | // | |
1275 | // Run Jet Finder | |
1276 | fPythia->Pycell(njets); | |
1277 | Int_t i; | |
1278 | for (i = 0; i < njets; i++) { | |
1279 | Float_t px, py, pz, e; | |
1280 | fPythia->GetJet(i, px, py, pz, e); | |
1281 | jets[0][i] = px; | |
1282 | jets[1][i] = py; | |
1283 | jets[2][i] = pz; | |
1284 | jets[3][i] = e; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | ||
1289 | void AliGenPythiaPlus::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1290 | { | |
1291 | // | |
1292 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1293 | // | |
1294 | nJets = 0; | |
1295 | nJetsTrig = 0; | |
1296 | if (fJetReconstruction == kCluster) { | |
1297 | // | |
1298 | // Configure cluster algorithm | |
1299 | // | |
1300 | // fPythia->SetPARU(43, 2.); | |
1301 | // fPythia->SetMSTU(41, 1); | |
1302 | // | |
1303 | // Call cluster algorithm | |
1304 | // | |
1305 | fPythia->Pyclus(nJets); | |
1306 | // | |
1307 | // Loading jets from common block | |
1308 | // | |
1309 | } else { | |
1310 | ||
1311 | // | |
1312 | // Run Jet Finder | |
1313 | fPythia->Pycell(nJets); | |
1314 | } | |
1315 | ||
1316 | Int_t i; | |
1317 | for (i = 0; i < nJets; i++) { | |
1318 | Float_t px, py, pz, e; | |
1319 | fPythia->GetJet(i, px, py, pz, e); | |
1320 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
1321 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); | |
1322 | Float_t theta = TMath::ATan2(pt,pz); | |
1323 | Float_t et = e * TMath::Sin(theta); | |
1324 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
1325 | if ( | |
1326 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
1327 | phi > fPhiMinJet && phi < fPhiMaxJet && | |
1328 | et > fEtMinJet && et < fEtMaxJet | |
1329 | ) | |
1330 | { | |
1331 | jets[0][nJetsTrig] = px; | |
1332 | jets[1][nJetsTrig] = py; | |
1333 | jets[2][nJetsTrig] = pz; | |
1334 | jets[3][nJetsTrig] = e; | |
1335 | nJetsTrig++; | |
1336 | } else { | |
1337 | } | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | void AliGenPythiaPlus::GetSubEventTime() | |
1342 | { | |
1343 | // Calculates time of the next subevent | |
1344 | fEventTime = 0.; | |
1345 | if (fEventsTime) { | |
1346 | TArrayF &array = *fEventsTime; | |
1347 | fEventTime = array[fCurSubEvent++]; | |
1348 | } | |
1349 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1350 | return; | |
1351 | } | |
1352 | ||
1353 | ||
1354 | ||
1355 | ||
c2fc9d31 | 1356 | Bool_t AliGenPythiaPlus::IsInEMCAL(Float_t phi, Float_t eta) const |
39d810c8 | 1357 | { |
1358 | // Is particle in EMCAL acceptance? | |
1359 | // phi in degrees, etamin=-etamax | |
1360 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && | |
1361 | eta < fEMCALEta ) | |
1362 | return kTRUE; | |
1363 | else | |
1364 | return kFALSE; | |
1365 | } | |
1366 | ||
c2fc9d31 | 1367 | Bool_t AliGenPythiaPlus::IsInPHOS(Float_t phi, Float_t eta) const |
39d810c8 | 1368 | { |
1369 | // Is particle in PHOS acceptance? | |
1370 | // Acceptance slightly larger considered. | |
1371 | // phi in degrees, etamin=-etamax | |
1372 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && | |
1373 | eta < fPHOSEta ) | |
1374 | return kTRUE; | |
1375 | else | |
1376 | return kFALSE; | |
1377 | } | |
1378 | ||
1379 | void AliGenPythiaPlus::RotatePhi(Int_t iphcand, Bool_t& okdd) | |
1380 | { | |
1381 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1382 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1383 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1384 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1385 | ||
1386 | //calculate deltaphi | |
8507138f | 1387 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
39d810c8 | 1388 | Double_t phphi = ph->Phi(); |
1389 | Double_t deltaphi = phiPHOS - phphi; | |
1390 | ||
1391 | ||
1392 | ||
1393 | //loop for all particles and produce the phi rotation | |
8507138f | 1394 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
39d810c8 | 1395 | Double_t oldphi, newphi; |
1396 | Double_t newVx, newVy, R, Vz, time; | |
1397 | Double_t newPx, newPy, pt, Pz, e; | |
1398 | for(Int_t i=0; i< np; i++) { | |
8507138f | 1399 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 1400 | oldphi = iparticle->Phi(); |
1401 | newphi = oldphi + deltaphi; | |
1402 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1403 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1404 | ||
1405 | R = iparticle->R(); | |
1406 | newVx = R*TMath::Cos(newphi); | |
1407 | newVy = R*TMath::Sin(newphi); | |
1408 | Vz = iparticle->Vz(); // don't transform | |
1409 | time = iparticle->T(); // don't transform | |
1410 | ||
1411 | pt = iparticle->Pt(); | |
1412 | newPx = pt*TMath::Cos(newphi); | |
1413 | newPy = pt*TMath::Sin(newphi); | |
1414 | Pz = iparticle->Pz(); // don't transform | |
1415 | e = iparticle->Energy(); // don't transform | |
1416 | ||
1417 | // apply rotation | |
1418 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1419 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1420 | ||
1421 | } //end particle loop | |
1422 | ||
1423 | // now let's check that we put correctly the candidate photon in PHOS | |
1424 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1425 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1426 | if(IsInPHOS(phi,eta)) | |
1427 | okdd = kTRUE; | |
1428 | } | |
1429 | ||
1430 | ||
1431 | #ifdef never | |
1432 | void AliGenPythiaPlus::Streamer(TBuffer &R__b) | |
1433 | { | |
1434 | // Stream an object of class AliGenPythia. | |
1435 | ||
1436 | if (R__b.IsReading()) { | |
1437 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1438 | AliGenerator::Streamer(R__b); | |
1439 | R__b >> (Int_t&)fProcess; | |
1440 | R__b >> (Int_t&)fStrucFunc; | |
1441 | R__b >> (Int_t&)fForceDecay; | |
1442 | R__b >> fEnergyCMS; | |
1443 | R__b >> fKineBias; | |
1444 | R__b >> fTrials; | |
1445 | fParentSelect.Streamer(R__b); | |
1446 | fChildSelect.Streamer(R__b); | |
1447 | R__b >> fXsection; | |
1448 | // (AliPythia::Instance())->Streamer(R__b); | |
1449 | R__b >> fPtHardMin; | |
1450 | R__b >> fPtHardMax; | |
1451 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1452 | } else { | |
1453 | R__b.WriteVersion(AliGenPythiaPlus::IsA()); | |
1454 | AliGenerator::Streamer(R__b); | |
1455 | R__b << (Int_t)fProcess; | |
1456 | R__b << (Int_t)fStrucFunc; | |
1457 | R__b << (Int_t)fForceDecay; | |
1458 | R__b << fEnergyCMS; | |
1459 | R__b << fKineBias; | |
1460 | R__b << fTrials; | |
1461 | fParentSelect.Streamer(R__b); | |
1462 | fChildSelect.Streamer(R__b); | |
1463 | R__b << fXsection; | |
1464 | // R__b << fPythia; | |
1465 | R__b << fPtHardMin; | |
1466 | R__b << fPtHardMax; | |
1467 | // fDecayer->Streamer(R__b); | |
1468 | } | |
1469 | } | |
1470 | #endif | |
1471 | ||
1472 | ||
1473 |