]>
Commit | Line | Data |
---|---|---|
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: | |
377 | fParentSelect[0] = 411; | |
378 | fParentSelect[1] = 421; | |
379 | fParentSelect[2] = 431; | |
380 | fParentSelect[3] = 4122; | |
9ccc3d0e | 381 | fParentSelect[4] = 4232; |
382 | fParentSelect[5] = 4132; | |
383 | fParentSelect[6] = 4332; | |
39d810c8 | 384 | fFlavorSelect = 4; |
385 | break; | |
386 | case kPyD0PbPbMNR: | |
387 | case kPyD0pPbMNR: | |
388 | case kPyD0ppMNR: | |
389 | fParentSelect[0] = 421; | |
390 | fFlavorSelect = 4; | |
391 | break; | |
392 | case kPyDPlusPbPbMNR: | |
393 | case kPyDPluspPbMNR: | |
394 | case kPyDPlusppMNR: | |
395 | fParentSelect[0] = 411; | |
396 | fFlavorSelect = 4; | |
397 | break; | |
398 | case kPyDPlusStrangePbPbMNR: | |
399 | case kPyDPlusStrangepPbMNR: | |
400 | case kPyDPlusStrangeppMNR: | |
401 | fParentSelect[0] = 431; | |
402 | fFlavorSelect = 4; | |
403 | break; | |
68504d42 | 404 | case kPyLambdacppMNR: |
405 | fParentSelect[0] = 4122; | |
406 | fFlavorSelect = 4; | |
407 | break; | |
39d810c8 | 408 | case kPyBeauty: |
70574ff8 | 409 | case kPyBeautyJets: |
39d810c8 | 410 | case kPyBeautyPbPbMNR: |
411 | case kPyBeautypPbMNR: | |
412 | case kPyBeautyppMNR: | |
413 | case kPyBeautyppMNRwmi: | |
414 | fParentSelect[0]= 511; | |
415 | fParentSelect[1]= 521; | |
416 | fParentSelect[2]= 531; | |
417 | fParentSelect[3]= 5122; | |
418 | fParentSelect[4]= 5132; | |
419 | fParentSelect[5]= 5232; | |
420 | fParentSelect[6]= 5332; | |
421 | fFlavorSelect = 5; | |
422 | break; | |
423 | case kPyBeautyUnforced: | |
424 | fParentSelect[0] = 511; | |
425 | fParentSelect[1] = 521; | |
426 | fParentSelect[2] = 531; | |
427 | fParentSelect[3] = 5122; | |
428 | fParentSelect[4] = 5132; | |
429 | fParentSelect[5] = 5232; | |
430 | fParentSelect[6] = 5332; | |
431 | fFlavorSelect = 5; | |
432 | break; | |
433 | case kPyJpsiChi: | |
434 | case kPyJpsi: | |
435 | fParentSelect[0] = 443; | |
436 | break; | |
0bd3d7c5 | 437 | case kPyMbAtlasTuneMC09: |
39d810c8 | 438 | case kPyMbDefault: |
439 | case kPyMb: | |
04081a91 | 440 | case kPyMbWithDirectPhoton: |
39d810c8 | 441 | case kPyMbNonDiffr: |
442 | case kPyMbMSEL1: | |
443 | case kPyJets: | |
444 | case kPyDirectGamma: | |
445 | case kPyLhwgMb: | |
446 | break; | |
447 | case kPyW: | |
448 | case kPyZ: | |
9a8774a1 | 449 | case kPyMBRSingleDiffraction: |
450 | case kPyMBRDoubleDiffraction: | |
451 | case kPyMBRCentralDiffraction: | |
39d810c8 | 452 | break; |
453 | } | |
454 | // | |
455 | // | |
456 | // JetFinder for Trigger | |
457 | // | |
458 | // Configure detector (EMCAL like) | |
459 | // | |
460 | fPythia->SetPycellParameters(fPycellEtaMax,fPycellNEta, fPycellNPhi, | |
461 | fPycellThreshold, fPycellEtSeed, | |
462 | fPycellMinEtJet, fPycellMaxRadius); | |
463 | // | |
464 | // This counts the total number of calls to Pyevnt() per run. | |
465 | fTrialsRun = 0; | |
466 | fQ = 0.; | |
467 | fX1 = 0.; | |
468 | fX2 = 0.; | |
469 | fNev = 0 ; | |
470 | // | |
471 | // | |
472 | // | |
473 | AliGenMC::Init(); | |
474 | // | |
475 | // | |
476 | // | |
477 | if (fSetNuclei) { | |
478 | fDyBoost = 0; | |
479 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
480 | } | |
481 | ||
482 | if (fQuench) { | |
483 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0, 0.97, 30); | |
484 | } | |
485 | ||
486 | // fPythia->SetPARJ(200, 0.0); | |
487 | ||
488 | // if (fQuench == 3) { | |
489 | // // Nestor's change of the splittings | |
490 | // fPythia->SetPARJ(200, 0.8); | |
491 | // fPythia->SetMSTJ(41, 1); // QCD radiation only | |
492 | // fPythia->SetMSTJ(42, 2); // angular ordering | |
493 | // fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
494 | // fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
495 | // fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
496 | // fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
497 | // } | |
498 | } | |
499 | ||
500 | void AliGenPythiaPlus::Generate() | |
501 | { | |
502 | // Generate one event | |
503 | ||
504 | fDecayer->ForceDecay(); | |
505 | ||
b2b19810 | 506 | Double_t polar[3] = {0,0,0}; |
507 | Double_t origin[3] = {0,0,0}; | |
508 | Double_t p[4]; | |
39d810c8 | 509 | // converts from mm/c to s |
510 | const Float_t kconv=0.001/2.999792458e8; | |
511 | // | |
512 | Int_t nt=0; | |
513 | Int_t jev=0; | |
514 | Int_t j, kf; | |
515 | fTrials=0; | |
516 | fEventTime = 0.; | |
517 | ||
518 | ||
519 | ||
520 | // Set collision vertex position | |
521 | if (fVertexSmear == kPerEvent) Vertex(); | |
522 | ||
523 | // event loop | |
524 | while(1) | |
525 | { | |
526 | // | |
527 | // Produce event | |
528 | // | |
529 | // | |
530 | // Switch hadronisation off | |
531 | // | |
532 | // fPythia->SwitchHadronisationOff(); | |
533 | // | |
534 | // Either produce new event or read partons from file | |
535 | // | |
536 | if (!fReadFromFile) { | |
537 | if (!fNewMIS) { | |
538 | fPythia->GenerateEvent(); | |
539 | } else { | |
540 | fPythia->GenerateMIEvent(); | |
541 | } | |
542 | fNpartons = fPythia->GetNumberOfParticles(); | |
543 | } else { | |
33c3c91a | 544 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
545 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
39d810c8 | 546 | fPythia->SetNumberOfParticles(0); |
547 | fPythia->LoadEvent(fRL->Stack(), 0 , 1); | |
548 | fPythia->EditEventList(21); | |
549 | } | |
550 | ||
551 | // | |
552 | // Run quenching routine | |
553 | // | |
554 | if (fQuench == 1) { | |
555 | fPythia->Quench(); | |
556 | } else if (fQuench == 2){ | |
557 | fPythia->Pyquen(208., 0, 0.); | |
558 | } else if (fQuench == 3) { | |
559 | // Quenching is via multiplicative correction of the splittings | |
560 | } | |
561 | ||
562 | // | |
563 | // Switch hadronisation on | |
564 | // | |
565 | // fPythia->SwitchHadronisationOn(); | |
566 | // | |
567 | // .. and perform hadronisation | |
568 | // printf("Calling hadronisation %d\n", fPythia->GetN()); | |
569 | // fPythia->HadronizeEvent(); | |
570 | fTrials++; | |
8507138f | 571 | fPythia->GetParticles(&fParticles); |
39d810c8 | 572 | Boost(); |
573 | // | |
574 | // | |
575 | // | |
576 | Int_t i; | |
577 | ||
578 | fNprimaries = 0; | |
8507138f | 579 | Int_t np = fParticles.GetEntriesFast(); |
39d810c8 | 580 | |
581 | if (np == 0) continue; | |
582 | // | |
583 | ||
584 | // | |
585 | Int_t* pParent = new Int_t[np]; | |
586 | Int_t* pSelected = new Int_t[np]; | |
587 | Int_t* trackIt = new Int_t[np]; | |
588 | for (i = 0; i < np; i++) { | |
589 | pParent[i] = -1; | |
590 | pSelected[i] = 0; | |
591 | trackIt[i] = 0; | |
592 | } | |
593 | ||
594 | Int_t nc = 0; // Total n. of selected particles | |
595 | Int_t nParents = 0; // Selected parents | |
596 | Int_t nTkbles = 0; // Trackable particles | |
597 | if (fProcess != kPyMbDefault && | |
598 | fProcess != kPyMb && | |
04081a91 | 599 | fProcess != kPyMbWithDirectPhoton && |
39d810c8 | 600 | fProcess != kPyJets && |
601 | fProcess != kPyDirectGamma && | |
602 | fProcess != kPyMbNonDiffr && | |
603 | fProcess != kPyMbMSEL1 && | |
604 | fProcess != kPyW && | |
605 | fProcess != kPyZ && | |
606 | fProcess != kPyCharmppMNRwmi && | |
607 | fProcess != kPyBeautyppMNRwmi) { | |
608 | ||
609 | for (i = 0; i < np; i++) { | |
8507138f | 610 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 611 | Int_t ks = iparticle->GetStatusCode(); |
612 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
613 | // No initial state partons | |
614 | if (ks==21) continue; | |
615 | // | |
616 | // Heavy Flavor Selection | |
617 | // | |
618 | // quark ? | |
619 | kf = TMath::Abs(kf); | |
620 | Int_t kfl = kf; | |
621 | // Resonance | |
622 | ||
623 | if (kfl > 100000) kfl %= 100000; | |
624 | if (kfl > 10000) kfl %= 10000; | |
625 | // meson ? | |
626 | if (kfl > 10) kfl/=100; | |
627 | // baryon | |
628 | if (kfl > 10) kfl/=10; | |
629 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
630 | Int_t kfMo = 0; | |
631 | // | |
632 | // Establish mother daughter relation between heavy quarks and mesons | |
633 | // | |
634 | if (kf >= fFlavorSelect && kf <= 6) { | |
635 | Int_t idau = (fPythia->Version() == 6) ? (iparticle->GetFirstDaughter() - 1) :(iparticle->GetFirstDaughter()); | |
636 | if (idau > -1) { | |
8507138f | 637 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
39d810c8 | 638 | Int_t pdgD = daughter->GetPdgCode(); |
639 | if (pdgD == 91 || pdgD == 92) { | |
640 | Int_t jmin = (fPythia->Version() == 6) ? (daughter->GetFirstDaughter() - 1) : (daughter->GetFirstDaughter()); | |
641 | Int_t jmax = (fPythia->Version() == 6) ? (daughter->GetLastDaughter() - 1) : (daughter->GetLastDaughter()); | |
642 | ||
2ab330c9 | 643 | for (Int_t jp = jmin; jp <= jmax; jp++) |
644 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
39d810c8 | 645 | } // is string or cluster |
646 | } // has daughter | |
647 | } // heavy quark | |
648 | ||
649 | ||
650 | if (ipa > -1) { | |
8507138f | 651 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
39d810c8 | 652 | kfMo = TMath::Abs(mother->GetPdgCode()); |
653 | } | |
654 | ||
655 | // What to keep in Stack? | |
656 | Bool_t flavorOK = kFALSE; | |
657 | Bool_t selectOK = kFALSE; | |
658 | if (fFeedDownOpt) { | |
659 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; | |
660 | } else { | |
661 | if (kfl > fFlavorSelect) { | |
662 | nc = -1; | |
663 | break; | |
664 | } | |
665 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
666 | } | |
667 | switch (fStackFillOpt) { | |
668 | case kFlavorSelection: | |
669 | selectOK = kTRUE; | |
670 | break; | |
671 | case kParentSelection: | |
672 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; | |
673 | break; | |
674 | } | |
675 | if (flavorOK && selectOK) { | |
676 | // | |
677 | // Heavy flavor hadron or quark | |
678 | // | |
679 | // Kinematic seletion on final state heavy flavor mesons | |
680 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
681 | { | |
682 | continue; | |
683 | } | |
684 | pSelected[i] = 1; | |
685 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
686 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
687 | } else { | |
688 | // Kinematic seletion on decay products | |
689 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
690 | && !KinematicSelection(iparticle, 1)) | |
691 | { | |
692 | continue; | |
693 | } | |
694 | // | |
695 | // Decay products | |
696 | // Select if mother was selected and is not tracked | |
697 | ||
698 | if (pSelected[ipa] && | |
699 | !trackIt[ipa] && // mother will be tracked ? | |
700 | kfMo != 5 && // mother is b-quark, don't store fragments | |
701 | kfMo != 4 && // mother is c-quark, don't store fragments | |
702 | kf != 92) // don't store string | |
703 | { | |
704 | // | |
705 | // Semi-stable or de-selected: diselect decay products: | |
706 | // | |
707 | // | |
708 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
709 | { | |
710 | Int_t ipF = iparticle->GetFirstDaughter(); | |
711 | Int_t ipL = iparticle->GetLastDaughter(); | |
712 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
713 | } | |
714 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
715 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
716 | } | |
717 | } | |
718 | if (pSelected[i] == -1) pSelected[i] = 0; | |
719 | if (!pSelected[i]) continue; | |
720 | // Count quarks only if you did not include fragmentation | |
721 | if (fFragmentation && kf <= 10) continue; | |
722 | ||
723 | nc++; | |
724 | // Decision on tracking | |
725 | trackIt[i] = 0; | |
726 | // | |
727 | // Track final state particle | |
728 | if (ks == 1) trackIt[i] = 1; | |
729 | // Track semi-stable particles | |
730 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; | |
731 | // Track particles selected by process if undecayed. | |
732 | if (fForceDecay == kNoDecay) { | |
733 | if (ParentSelected(kf)) trackIt[i] = 1; | |
734 | } else { | |
735 | if (ParentSelected(kf)) trackIt[i] = 0; | |
736 | } | |
737 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
738 | // | |
739 | // | |
740 | ||
741 | } // particle selection loop | |
742 | if (nc > 0) { | |
743 | for (i = 0; i < np; i++) { | |
744 | if (!pSelected[i]) continue; | |
8507138f | 745 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 746 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
747 | Int_t ks = iparticle->GetStatusCode(); | |
748 | p[0] = iparticle->Px(); | |
749 | p[1] = iparticle->Py(); | |
750 | p[2] = iparticle->Pz(); | |
751 | p[3] = iparticle->Energy(); | |
752 | ||
753 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] | |
754 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
755 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
756 | ||
21391258 | 757 | Float_t tof = fTime + kconv*iparticle->T(); |
39d810c8 | 758 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; |
759 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
760 | ||
761 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
762 | p[0], p[1], p[2], p[3], | |
763 | origin[0], origin[1], origin[2], tof, | |
764 | polar[0], polar[1], polar[2], | |
765 | kPPrimary, nt, 1., ks); | |
766 | pParent[i] = nt; | |
767 | KeepTrack(nt); | |
768 | fNprimaries++; | |
769 | } // PushTrack loop | |
770 | } | |
771 | } else { | |
772 | nc = GenerateMB(); | |
773 | } // mb ? | |
774 | ||
775 | GetSubEventTime(); | |
776 | ||
777 | delete[] pParent; | |
778 | delete[] pSelected; | |
779 | delete[] trackIt; | |
780 | ||
781 | if (nc > 0) { | |
782 | switch (fCountMode) { | |
783 | case kCountAll: | |
784 | // printf(" Count all \n"); | |
785 | jev += nc; | |
786 | break; | |
787 | case kCountParents: | |
788 | // printf(" Count parents \n"); | |
789 | jev += nParents; | |
790 | break; | |
791 | case kCountTrackables: | |
792 | // printf(" Count trackable \n"); | |
793 | jev += nTkbles; | |
794 | break; | |
795 | } | |
796 | if (jev >= fNpart || fNpart == -1) { | |
797 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
bffc134e | 798 | if (fInfo) fPythia->GetXandQ(fX1, fX2, fQ); |
39d810c8 | 799 | fTrialsRun += fTrials; |
800 | fNev++; | |
801 | MakeHeader(); | |
802 | break; | |
803 | } | |
804 | } | |
805 | } // event loop | |
806 | SetHighWaterMark(nt); | |
807 | // Adjust weight due to kinematic selection | |
808 | // AdjustWeights(); | |
809 | // get cross-section | |
810 | fXsection = fPythia->GetXSection(); | |
811 | } | |
812 | ||
813 | Int_t AliGenPythiaPlus::GenerateMB() | |
814 | { | |
815 | // | |
816 | // Min Bias selection and other global selections | |
817 | // | |
818 | Int_t i, kf, nt, iparent; | |
819 | Int_t nc = 0; | |
820 | Float_t p[4]; | |
821 | Float_t polar[3] = {0,0,0}; | |
822 | Float_t origin[3] = {0,0,0}; | |
823 | // converts from mm/c to s | |
824 | const Float_t kconv = 0.001 / 2.999792458e8; | |
825 | ||
8507138f | 826 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
39d810c8 | 827 | |
828 | Int_t* pParent = new Int_t[np]; | |
829 | for (i=0; i< np; i++) pParent[i] = -1; | |
830 | if (fProcess == kPyJets || fProcess == kPyDirectGamma) { | |
8507138f | 831 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
832 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
39d810c8 | 833 | if (!CheckTrigger(jet1, jet2)) { |
834 | delete [] pParent; | |
835 | return 0; | |
836 | } | |
837 | } | |
838 | ||
839 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL | |
840 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
841 | ||
842 | Bool_t ok = kFALSE; | |
843 | ||
844 | Int_t pdg = 0; | |
845 | if (fFragPhotonInCalo) pdg = 22 ; // Photon | |
846 | else if (fPi0InCalo) pdg = 111 ; // Pi0 | |
847 | ||
848 | for (i=0; i< np; i++) { | |
8507138f | 849 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 850 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
851 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ | |
852 | Int_t imother = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
8507138f | 853 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
39d810c8 | 854 | if(pdg == 111 || |
855 | (pdg == 22 && pmother->GetStatusCode() != 11))//No photon from hadron decay | |
856 | { | |
857 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
858 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
859 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || | |
860 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
861 | ok =kTRUE; | |
862 | } | |
863 | } | |
864 | } | |
1ee02229 | 865 | if(!ok){ |
866 | delete [] pParent; | |
867 | return 0; | |
868 | } | |
39d810c8 | 869 | } |
870 | ||
871 | ||
872 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
873 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
874 | ||
875 | Bool_t okd = kFALSE; | |
876 | ||
877 | Int_t pdg = 22; | |
878 | Int_t iphcand = -1; | |
879 | for (i=0; i< np; i++) { | |
8507138f | 880 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 881 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
882 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
883 | ||
884 | if(iparticle->GetStatusCode() == 1 | |
885 | && iparticle->GetPdgCode() == pdg | |
886 | && iparticle->Pt() > fPhotonMinPt | |
887 | && eta < fPHOSEta){ | |
888 | ||
889 | // first check if the photon is in PHOS phi | |
890 | if(IsInPHOS(phi,eta)){ | |
891 | okd = kTRUE; | |
892 | break; | |
893 | } | |
894 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
895 | ||
896 | } | |
897 | } | |
898 | ||
899 | if(!okd && iphcand != -1) // execute rotation in phi | |
900 | RotatePhi(iphcand,okd); | |
901 | ||
92847124 | 902 | if(!okd) { |
903 | delete[] pParent; | |
904 | return 0; | |
905 | } | |
39d810c8 | 906 | } |
907 | ||
908 | if (fTriggerParticle) { | |
909 | Bool_t triggered = kFALSE; | |
910 | for (i = 0; i < np; i++) { | |
8507138f | 911 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 912 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
913 | if (kf != fTriggerParticle) continue; | |
914 | if (iparticle->Pt() == 0.) continue; | |
915 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
916 | triggered = kTRUE; | |
917 | break; | |
918 | } | |
919 | if (!triggered) { | |
920 | delete [] pParent; | |
921 | return 0; | |
922 | } | |
923 | } | |
924 | ||
925 | ||
926 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
927 | // in fYMin < y < fYMax | |
928 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi) { | |
9ccc3d0e | 929 | TParticle *partCheck; |
930 | TParticle *mother; | |
39d810c8 | 931 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 932 | Bool_t theChild=kFALSE; |
933 | Float_t y; | |
934 | Int_t pdg,mpdg,mpdgUpperFamily; | |
39d810c8 | 935 | for(i=0; i<np; i++) { |
9ccc3d0e | 936 | partCheck = (TParticle*)fParticles.At(i); |
937 | pdg = partCheck->GetPdgCode(); | |
938 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
939 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
940 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
941 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
942 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
943 | } | |
944 | ||
945 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { | |
946 | Int_t mi = partCheck->GetFirstMother() - 1; | |
947 | if(mi<0) continue; | |
948 | mother = (TParticle*)fParticles.At(mi); | |
949 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 950 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 951 | if ( ParentSelected(mpdg) || |
952 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
953 | if (KinematicSelection(partCheck,1)) { | |
954 | theChild=kTRUE; | |
955 | } | |
956 | } | |
957 | } | |
39d810c8 | 958 | } |
9ccc3d0e | 959 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
39d810c8 | 960 | delete[] pParent; |
961 | return 0; | |
962 | } | |
9ccc3d0e | 963 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
964 | delete[] pParent; | |
965 | return 0; | |
966 | } | |
967 | ||
39d810c8 | 968 | } |
969 | ||
970 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff | |
971 | if ( (fProcess == kPyW || | |
972 | fProcess == kPyZ || | |
973 | fProcess == kPyMbDefault || | |
974 | fProcess == kPyMb || | |
04081a91 | 975 | fProcess == kPyMbWithDirectPhoton || |
39d810c8 | 976 | fProcess == kPyMbNonDiffr) |
977 | && (fCutOnChild == 1) ) { | |
978 | if ( !CheckKinematicsOnChild() ) { | |
979 | delete[] pParent; | |
980 | return 0; | |
981 | } | |
982 | } | |
983 | ||
984 | ||
985 | for (i = 0; i < np; i++) { | |
986 | Int_t trackIt = 0; | |
8507138f | 987 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 988 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
989 | Int_t ks = iparticle->GetStatusCode(); | |
990 | Int_t km = iparticle->GetFirstMother(); | |
991 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
992 | (ks != 1) || | |
993 | (fProcess == kPyJets && ks == 21 && km == 0 && i>1)) { | |
994 | nc++; | |
995 | if (ks == 1) trackIt = 1; | |
996 | ||
997 | Int_t ipa = (fPythia->Version() == 6) ? (iparticle->GetFirstMother() - 1) :(iparticle->GetFirstMother()) ; | |
998 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
999 | if (ipa >= np) fPythia->EventListing(); | |
1000 | ||
1001 | // | |
1002 | // store track information | |
1003 | p[0] = iparticle->Px(); | |
1004 | p[1] = iparticle->Py(); | |
1005 | p[2] = iparticle->Pz(); | |
1006 | p[3] = iparticle->Energy(); | |
1007 | ||
1008 | ||
1009 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] | |
1010 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1011 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1012 | ||
21391258 | 1013 | Float_t tof = fTime + fEventTime + kconv * iparticle->T(); |
39d810c8 | 1014 | |
1015 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1016 | p[0], p[1], p[2], p[3], | |
1017 | origin[0], origin[1], origin[2], tof, | |
1018 | polar[0], polar[1], polar[2], | |
1019 | kPPrimary, nt, 1., ks); | |
1020 | fNprimaries++; | |
1021 | ||
1022 | ||
1023 | // | |
1024 | // Special Treatment to store color-flow | |
1025 | // | |
3e54fb8c | 1026 | /* |
39d810c8 | 1027 | if (ks == 3 || ks == 13 || ks == 14) { |
1028 | TParticle* particle = 0; | |
1029 | if (fStack) { | |
1030 | particle = fStack->Particle(nt); | |
1031 | } else { | |
33c3c91a | 1032 | particle = AliRunLoader::Instance()->Stack()->Particle(nt); |
39d810c8 | 1033 | } |
3e54fb8c | 1034 | particle->SetFirstDaughter(fPythia->GetK(2, i)); |
1035 | particle->SetLastDaughter(fPythia->GetK(3, i)); | |
39d810c8 | 1036 | } |
3e54fb8c | 1037 | */ |
39d810c8 | 1038 | KeepTrack(nt); |
1039 | pParent[i] = nt; | |
1040 | SetHighWaterMark(nt); | |
1041 | ||
1042 | } // select particle | |
1043 | } // particle loop | |
1044 | ||
1045 | delete[] pParent; | |
1046 | ||
1047 | return 1; | |
1048 | } | |
1049 | ||
1050 | ||
1051 | void AliGenPythiaPlus::FinishRun() | |
1052 | { | |
1053 | // Print x-section summary | |
1054 | fPythia->PrintStatistics(); | |
1055 | ||
1056 | if (fNev > 0.) { | |
1057 | fQ /= fNev; | |
1058 | fX1 /= fNev; | |
1059 | fX2 /= fNev; | |
1060 | } | |
1061 | ||
1062 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); | |
1063 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
1064 | } | |
1065 | ||
1066 | void AliGenPythiaPlus::AdjustWeights() const | |
1067 | { | |
1068 | // Adjust the weights after generation of all events | |
1069 | // | |
1070 | if (gAlice) { | |
1071 | TParticle *part; | |
1072 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1073 | for (Int_t i=0; i<ntrack; i++) { | |
1074 | part= gAlice->GetMCApp()->Particle(i); | |
1075 | part->SetWeight(part->GetWeight()*fKineBias); | |
1076 | } | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | void AliGenPythiaPlus::SetNuclei(Int_t a1, Int_t a2) | |
1081 | { | |
1082 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1083 | ||
1084 | fAProjectile = a1; | |
1085 | fATarget = a2; | |
1086 | fSetNuclei = kTRUE; | |
1087 | } | |
1088 | ||
1089 | ||
1090 | void AliGenPythiaPlus::MakeHeader() | |
1091 | { | |
1092 | // | |
1093 | // Make header for the simulated event | |
1094 | // | |
1095 | if (gAlice) { | |
1096 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
1097 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->EventListing(); | |
1098 | } | |
1099 | ||
1100 | // Builds the event header, to be called after each event | |
1101 | if (fHeader) delete fHeader; | |
1102 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
1103 | // | |
1104 | // Event type | |
1105 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->ProcessCode()); | |
1106 | // | |
1107 | // Number of trials | |
1108 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); | |
1109 | // | |
1110 | // Event Vertex | |
1111 | fHeader->SetPrimaryVertex(fVertex); | |
21391258 | 1112 | fHeader->SetInteractionTime(fTime+fEventTime); |
39d810c8 | 1113 | // |
1114 | // Number of primaries | |
1115 | fHeader->SetNProduced(fNprimaries); | |
1116 | // | |
1117 | // Jets that have triggered | |
1118 | ||
1119 | if (fProcess == kPyJets) | |
1120 | { | |
1121 | Int_t ntrig, njet; | |
1122 | Float_t jets[4][10]; | |
1123 | GetJets(njet, ntrig, jets); | |
1124 | ||
1125 | ||
1126 | for (Int_t i = 0; i < ntrig; i++) { | |
1127 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], | |
1128 | jets[3][i]); | |
1129 | } | |
1130 | } | |
1131 | // | |
1132 | // Copy relevant information from external header, if present. | |
1133 | // | |
1134 | Float_t uqJet[4]; | |
1135 | ||
1136 | if (fRL) { | |
1137 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1138 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1139 | { | |
1140 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1141 | ||
1142 | ||
1143 | exHeader->TriggerJet(i, uqJet); | |
1144 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1145 | } | |
1146 | } | |
1147 | // | |
1148 | // Store quenching parameters | |
1149 | // | |
1150 | if (fQuench){ | |
3e54fb8c | 1151 | Double_t z[4] = {0.}; |
1152 | Double_t xp = 0.; | |
1153 | Double_t yp = 0.; | |
39d810c8 | 1154 | if (fQuench == 1) { |
1155 | // Pythia::Quench() | |
1156 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1157 | } else { | |
1158 | // Pyquen | |
1159 | Double_t r1 = PARIMP.rb1; | |
1160 | Double_t r2 = PARIMP.rb2; | |
1161 | Double_t b = PARIMP.b1; | |
1162 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1163 | Double_t phi = PARIMP.psib1; | |
1164 | xp = r * TMath::Cos(phi); | |
1165 | yp = r * TMath::Sin(phi); | |
1166 | ||
1167 | } | |
1168 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); | |
1169 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1170 | } | |
1171 | // | |
1172 | // Store pt^hard | |
1173 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetPtHard()); | |
1174 | // | |
1175 | // Pass header | |
1176 | // | |
1177 | AddHeader(fHeader); | |
1178 | fHeader = 0x0; | |
1179 | } | |
1180 | ||
c2fc9d31 | 1181 | Bool_t AliGenPythiaPlus::CheckTrigger(const TParticle* jet1, const TParticle* jet2) |
39d810c8 | 1182 | { |
1183 | // Check the kinematic trigger condition | |
1184 | // | |
1185 | Double_t eta[2]; | |
1186 | eta[0] = jet1->Eta(); | |
1187 | eta[1] = jet2->Eta(); | |
1188 | Double_t phi[2]; | |
1189 | phi[0] = jet1->Phi(); | |
1190 | phi[1] = jet2->Phi(); | |
1191 | Int_t pdg[2]; | |
1192 | pdg[0] = jet1->GetPdgCode(); | |
1193 | pdg[1] = jet2->GetPdgCode(); | |
1194 | Bool_t triggered = kFALSE; | |
1195 | ||
1196 | if (fProcess == kPyJets) { | |
1197 | Int_t njets = 0; | |
1198 | Int_t ntrig = 0; | |
1199 | Float_t jets[4][10]; | |
1200 | // | |
1201 | // Use Pythia clustering on parton level to determine jet axis | |
1202 | // | |
1203 | GetJets(njets, ntrig, jets); | |
1204 | ||
1205 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; | |
1206 | // | |
1207 | } else { | |
1208 | Int_t ij = 0; | |
1209 | Int_t ig = 1; | |
1210 | if (pdg[0] == kGamma) { | |
1211 | ij = 1; | |
1212 | ig = 0; | |
1213 | } | |
1214 | //Check eta range first... | |
1215 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1216 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1217 | { | |
1218 | //Eta is okay, now check phi range | |
1219 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1220 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1221 | { | |
1222 | triggered = kTRUE; | |
1223 | } | |
1224 | } | |
1225 | } | |
1226 | return triggered; | |
1227 | } | |
1228 | ||
1229 | ||
1230 | ||
1231 | Bool_t AliGenPythiaPlus::CheckKinematicsOnChild(){ | |
1232 | // | |
1233 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1234 | // | |
1235 | Bool_t checking = kFALSE; | |
1236 | Int_t j, kcode, ks, km; | |
1237 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1238 | Int_t numberOfAcceptedParticles = 1; | |
1239 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1240 | Int_t npart = fParticles.GetEntriesFast(); |
39d810c8 | 1241 | |
1242 | for (j = 0; j<npart; j++) { | |
8507138f | 1243 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
39d810c8 | 1244 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1245 | ks = jparticle->GetStatusCode(); | |
1246 | km = jparticle->GetFirstMother(); | |
1247 | ||
1248 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1249 | nPartAcc++; | |
1250 | } | |
1251 | if( numberOfAcceptedParticles <= nPartAcc){ | |
1252 | checking = kTRUE; | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | return checking; | |
1258 | } | |
1259 | ||
1260 | void AliGenPythiaPlus::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) | |
1261 | { | |
1262 | // | |
1263 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1264 | // | |
1265 | // | |
1266 | // | |
1267 | // Save jets | |
1268 | // | |
1269 | // Run Jet Finder | |
1270 | fPythia->Pycell(njets); | |
1271 | Int_t i; | |
1272 | for (i = 0; i < njets; i++) { | |
1273 | Float_t px, py, pz, e; | |
1274 | fPythia->GetJet(i, px, py, pz, e); | |
1275 | jets[0][i] = px; | |
1276 | jets[1][i] = py; | |
1277 | jets[2][i] = pz; | |
1278 | jets[3][i] = e; | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | ||
1283 | void AliGenPythiaPlus::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1284 | { | |
1285 | // | |
1286 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1287 | // | |
1288 | nJets = 0; | |
1289 | nJetsTrig = 0; | |
1290 | if (fJetReconstruction == kCluster) { | |
1291 | // | |
1292 | // Configure cluster algorithm | |
1293 | // | |
1294 | // fPythia->SetPARU(43, 2.); | |
1295 | // fPythia->SetMSTU(41, 1); | |
1296 | // | |
1297 | // Call cluster algorithm | |
1298 | // | |
1299 | fPythia->Pyclus(nJets); | |
1300 | // | |
1301 | // Loading jets from common block | |
1302 | // | |
1303 | } else { | |
1304 | ||
1305 | // | |
1306 | // Run Jet Finder | |
1307 | fPythia->Pycell(nJets); | |
1308 | } | |
1309 | ||
1310 | Int_t i; | |
1311 | for (i = 0; i < nJets; i++) { | |
1312 | Float_t px, py, pz, e; | |
1313 | fPythia->GetJet(i, px, py, pz, e); | |
1314 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
1315 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); | |
1316 | Float_t theta = TMath::ATan2(pt,pz); | |
1317 | Float_t et = e * TMath::Sin(theta); | |
1318 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
1319 | if ( | |
1320 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
1321 | phi > fPhiMinJet && phi < fPhiMaxJet && | |
1322 | et > fEtMinJet && et < fEtMaxJet | |
1323 | ) | |
1324 | { | |
1325 | jets[0][nJetsTrig] = px; | |
1326 | jets[1][nJetsTrig] = py; | |
1327 | jets[2][nJetsTrig] = pz; | |
1328 | jets[3][nJetsTrig] = e; | |
1329 | nJetsTrig++; | |
1330 | } else { | |
1331 | } | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | void AliGenPythiaPlus::GetSubEventTime() | |
1336 | { | |
1337 | // Calculates time of the next subevent | |
1338 | fEventTime = 0.; | |
1339 | if (fEventsTime) { | |
1340 | TArrayF &array = *fEventsTime; | |
1341 | fEventTime = array[fCurSubEvent++]; | |
1342 | } | |
1343 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | ||
1348 | ||
1349 | ||
c2fc9d31 | 1350 | Bool_t AliGenPythiaPlus::IsInEMCAL(Float_t phi, Float_t eta) const |
39d810c8 | 1351 | { |
1352 | // Is particle in EMCAL acceptance? | |
1353 | // phi in degrees, etamin=-etamax | |
1354 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && | |
1355 | eta < fEMCALEta ) | |
1356 | return kTRUE; | |
1357 | else | |
1358 | return kFALSE; | |
1359 | } | |
1360 | ||
c2fc9d31 | 1361 | Bool_t AliGenPythiaPlus::IsInPHOS(Float_t phi, Float_t eta) const |
39d810c8 | 1362 | { |
1363 | // Is particle in PHOS acceptance? | |
1364 | // Acceptance slightly larger considered. | |
1365 | // phi in degrees, etamin=-etamax | |
1366 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && | |
1367 | eta < fPHOSEta ) | |
1368 | return kTRUE; | |
1369 | else | |
1370 | return kFALSE; | |
1371 | } | |
1372 | ||
1373 | void AliGenPythiaPlus::RotatePhi(Int_t iphcand, Bool_t& okdd) | |
1374 | { | |
1375 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1376 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1377 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1378 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1379 | ||
1380 | //calculate deltaphi | |
8507138f | 1381 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
39d810c8 | 1382 | Double_t phphi = ph->Phi(); |
1383 | Double_t deltaphi = phiPHOS - phphi; | |
1384 | ||
1385 | ||
1386 | ||
1387 | //loop for all particles and produce the phi rotation | |
8507138f | 1388 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
39d810c8 | 1389 | Double_t oldphi, newphi; |
1390 | Double_t newVx, newVy, R, Vz, time; | |
1391 | Double_t newPx, newPy, pt, Pz, e; | |
1392 | for(Int_t i=0; i< np; i++) { | |
8507138f | 1393 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
39d810c8 | 1394 | oldphi = iparticle->Phi(); |
1395 | newphi = oldphi + deltaphi; | |
1396 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1397 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1398 | ||
1399 | R = iparticle->R(); | |
1400 | newVx = R*TMath::Cos(newphi); | |
1401 | newVy = R*TMath::Sin(newphi); | |
1402 | Vz = iparticle->Vz(); // don't transform | |
1403 | time = iparticle->T(); // don't transform | |
1404 | ||
1405 | pt = iparticle->Pt(); | |
1406 | newPx = pt*TMath::Cos(newphi); | |
1407 | newPy = pt*TMath::Sin(newphi); | |
1408 | Pz = iparticle->Pz(); // don't transform | |
1409 | e = iparticle->Energy(); // don't transform | |
1410 | ||
1411 | // apply rotation | |
1412 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1413 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1414 | ||
1415 | } //end particle loop | |
1416 | ||
1417 | // now let's check that we put correctly the candidate photon in PHOS | |
1418 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1419 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1420 | if(IsInPHOS(phi,eta)) | |
1421 | okdd = kTRUE; | |
1422 | } | |
1423 | ||
1424 | ||
1425 | #ifdef never | |
1426 | void AliGenPythiaPlus::Streamer(TBuffer &R__b) | |
1427 | { | |
1428 | // Stream an object of class AliGenPythia. | |
1429 | ||
1430 | if (R__b.IsReading()) { | |
1431 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1432 | AliGenerator::Streamer(R__b); | |
1433 | R__b >> (Int_t&)fProcess; | |
1434 | R__b >> (Int_t&)fStrucFunc; | |
1435 | R__b >> (Int_t&)fForceDecay; | |
1436 | R__b >> fEnergyCMS; | |
1437 | R__b >> fKineBias; | |
1438 | R__b >> fTrials; | |
1439 | fParentSelect.Streamer(R__b); | |
1440 | fChildSelect.Streamer(R__b); | |
1441 | R__b >> fXsection; | |
1442 | // (AliPythia::Instance())->Streamer(R__b); | |
1443 | R__b >> fPtHardMin; | |
1444 | R__b >> fPtHardMax; | |
1445 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1446 | } else { | |
1447 | R__b.WriteVersion(AliGenPythiaPlus::IsA()); | |
1448 | AliGenerator::Streamer(R__b); | |
1449 | R__b << (Int_t)fProcess; | |
1450 | R__b << (Int_t)fStrucFunc; | |
1451 | R__b << (Int_t)fForceDecay; | |
1452 | R__b << fEnergyCMS; | |
1453 | R__b << fKineBias; | |
1454 | R__b << fTrials; | |
1455 | fParentSelect.Streamer(R__b); | |
1456 | fChildSelect.Streamer(R__b); | |
1457 | R__b << fXsection; | |
1458 | // R__b << fPythia; | |
1459 | R__b << fPtHardMin; | |
1460 | R__b << fPtHardMax; | |
1461 | // fDecayer->Streamer(R__b); | |
1462 | } | |
1463 | } | |
1464 | #endif | |
1465 | ||
1466 | ||
1467 |