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8d2cd130 | 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 | ||
7cdba479 | 16 | /* $Id$ */ |
8d2cd130 | 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 | ||
37b09b91 | 28 | #include <TClonesArray.h> |
8d2cd130 | 29 | #include <TDatabasePDG.h> |
30 | #include <TParticle.h> | |
31 | #include <TPDGCode.h> | |
32 | #include <TSystem.h> | |
33 | #include <TTree.h> | |
8d2cd130 | 34 | #include "AliConst.h" |
35 | #include "AliDecayerPythia.h" | |
36 | #include "AliGenPythia.h" | |
5fa4b20b | 37 | #include "AliHeader.h" |
8d2cd130 | 38 | #include "AliGenPythiaEventHeader.h" |
39 | #include "AliPythia.h" | |
7cdba479 | 40 | #include "AliPythiaRndm.h" |
8d2cd130 | 41 | #include "AliRun.h" |
7ea3ea5b | 42 | #include "AliStack.h" |
43 | #include "AliRunLoader.h" | |
5d12ce38 | 44 | #include "AliMC.h" |
e2d34d35 | 45 | #include "PyquenCommon.h" |
8d2cd130 | 46 | |
014a9521 | 47 | ClassImp(AliGenPythia) |
8d2cd130 | 48 | |
e8a8adcd | 49 | |
50 | AliGenPythia::AliGenPythia(): | |
51 | AliGenMC(), | |
52 | fProcess(kPyCharm), | |
53 | fStrucFunc(kCTEQ5L), | |
54 | fEnergyCMS(5500.), | |
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 | fPythia(0), | |
70 | fPtHardMin(0.), | |
71 | fPtHardMax(1.e4), | |
72 | fYHardMin(-1.e10), | |
73 | fYHardMax(1.e10), | |
74 | fGinit(1), | |
75 | fGfinal(1), | |
76 | fHadronisation(1), | |
77 | fNpartons(0), | |
78 | fReadFromFile(0), | |
79 | fQuench(0), | |
80 | fPtKick(1.), | |
81 | fFullEvent(kTRUE), | |
82 | fDecayer(new AliDecayerPythia()), | |
83 | fDebugEventFirst(-1), | |
84 | fDebugEventLast(-1), | |
85 | fEtMinJet(0.), | |
86 | fEtMaxJet(1.e4), | |
87 | fEtaMinJet(-20.), | |
88 | fEtaMaxJet(20.), | |
89 | fPhiMinJet(0.), | |
90 | fPhiMaxJet(2.* TMath::Pi()), | |
91 | fJetReconstruction(kCell), | |
92 | fEtaMinGamma(-20.), | |
93 | fEtaMaxGamma(20.), | |
94 | fPhiMinGamma(0.), | |
95 | fPhiMaxGamma(2. * TMath::Pi()), | |
96 | fPycellEtaMax(2.), | |
97 | fPycellNEta(274), | |
98 | fPycellNPhi(432), | |
99 | fPycellThreshold(0.), | |
100 | fPycellEtSeed(4.), | |
101 | fPycellMinEtJet(10.), | |
102 | fPycellMaxRadius(1.), | |
103 | fStackFillOpt(kFlavorSelection), | |
104 | fFeedDownOpt(kTRUE), | |
105 | fFragmentation(kTRUE), | |
106 | fSetNuclei(kFALSE), | |
107 | fNewMIS(kFALSE), | |
108 | fHFoff(kFALSE), | |
109 | fTriggerParticle(0), | |
110 | fTriggerEta(0.9), | |
111 | fCountMode(kCountAll), | |
112 | fHeader(0), | |
113 | fRL(0), | |
ec2c406e | 114 | fFileName(0), |
9fd8e520 | 115 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 116 | fPi0InCalo(kFALSE) , |
90a236ce | 117 | fPhotonInCalo(kFALSE), |
9fd8e520 | 118 | fCheckEMCAL(kFALSE), |
119 | fCheckPHOS(kFALSE), | |
90a236ce | 120 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 121 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 122 | fPhotonMinPt(0), |
9fd8e520 | 123 | fPHOSMinPhi(219.), |
124 | fPHOSMaxPhi(321.), | |
125 | fPHOSEta(0.13), | |
126 | fEMCALMinPhi(79.), | |
127 | fEMCALMaxPhi(191.), | |
128 | fEMCALEta(0.71) | |
ec2c406e | 129 | |
8d2cd130 | 130 | { |
131 | // Default Constructor | |
2d9f9817 | 132 | SetNuclei(0,0); |
7cdba479 | 133 | if (!AliPythiaRndm::GetPythiaRandom()) |
e8a8adcd | 134 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 | 135 | } |
136 | ||
137 | AliGenPythia::AliGenPythia(Int_t npart) | |
e8a8adcd | 138 | :AliGenMC(npart), |
139 | fProcess(kPyCharm), | |
140 | fStrucFunc(kCTEQ5L), | |
141 | fEnergyCMS(5500.), | |
142 | fKineBias(0.), | |
143 | fTrials(0), | |
144 | fTrialsRun(0), | |
145 | fQ(0.), | |
146 | fX1(0.), | |
147 | fX2(0.), | |
148 | fEventTime(0.), | |
149 | fInteractionRate(0.), | |
150 | fTimeWindow(0.), | |
151 | fCurSubEvent(0), | |
152 | fEventsTime(0), | |
153 | fNev(0), | |
154 | fFlavorSelect(0), | |
155 | fXsection(0.), | |
156 | fPythia(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), | |
ec2c406e | 201 | fFileName(0), |
9fd8e520 | 202 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 203 | fPi0InCalo(kFALSE) , |
90a236ce | 204 | fPhotonInCalo(kFALSE), |
9fd8e520 | 205 | fCheckEMCAL(kFALSE), |
206 | fCheckPHOS(kFALSE), | |
90a236ce | 207 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 208 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 209 | fPhotonMinPt(0), |
9fd8e520 | 210 | fPHOSMinPhi(219.), |
211 | fPHOSMaxPhi(321.), | |
212 | fPHOSEta(0.13), | |
213 | fEMCALMinPhi(79.), | |
214 | fEMCALMaxPhi(191.), | |
215 | fEMCALEta(0.71) | |
8d2cd130 | 216 | { |
217 | // default charm production at 5. 5 TeV | |
218 | // semimuonic decay | |
219 | // structure function GRVHO | |
220 | // | |
221 | fName = "Pythia"; | |
222 | fTitle= "Particle Generator using PYTHIA"; | |
8d2cd130 | 223 | SetForceDecay(); |
8d2cd130 | 224 | // Set random number generator |
7cdba479 | 225 | if (!AliPythiaRndm::GetPythiaRandom()) |
226 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
8d2cd130 | 227 | fParticles = new TClonesArray("TParticle",1000); |
2d9f9817 | 228 | SetNuclei(0,0); |
76d6ba9a | 229 | } |
8d2cd130 | 230 | |
8d2cd130 | 231 | AliGenPythia::~AliGenPythia() |
232 | { | |
233 | // Destructor | |
9d7108a7 | 234 | if(fEventsTime) delete fEventsTime; |
235 | } | |
236 | ||
237 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) | |
238 | { | |
239 | // Generate pileup using user specified rate | |
240 | fInteractionRate = rate; | |
241 | fTimeWindow = timewindow; | |
242 | GeneratePileup(); | |
243 | } | |
244 | ||
245 | void AliGenPythia::GeneratePileup() | |
246 | { | |
247 | // Generate sub events time for pileup | |
248 | fEventsTime = 0; | |
249 | if(fInteractionRate == 0.) { | |
250 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
251 | return; | |
252 | } | |
253 | ||
254 | Int_t npart = NumberParticles(); | |
255 | if(npart < 0) { | |
256 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
257 | return; | |
258 | } | |
259 | ||
260 | if(fEventsTime) delete fEventsTime; | |
261 | fEventsTime = new TArrayF(npart); | |
262 | TArrayF &array = *fEventsTime; | |
263 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
264 | array[ipart] = 0.; | |
265 | ||
266 | Float_t eventtime = 0.; | |
267 | while(1) | |
268 | { | |
269 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
270 | if(eventtime > fTimeWindow) break; | |
271 | array.Set(array.GetSize()+1); | |
272 | array[array.GetSize()-1] = eventtime; | |
273 | } | |
274 | ||
275 | eventtime = 0.; | |
276 | while(1) | |
277 | { | |
278 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
279 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
280 | array.Set(array.GetSize()+1); | |
281 | array[array.GetSize()-1] = eventtime; | |
282 | } | |
283 | ||
284 | SetNumberParticles(fEventsTime->GetSize()); | |
8d2cd130 | 285 | } |
286 | ||
592f8307 | 287 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
288 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
289 | { | |
290 | // Set pycell parameters | |
291 | fPycellEtaMax = etamax; | |
292 | fPycellNEta = neta; | |
293 | fPycellNPhi = nphi; | |
294 | fPycellThreshold = thresh; | |
295 | fPycellEtSeed = etseed; | |
296 | fPycellMinEtJet = minet; | |
297 | fPycellMaxRadius = r; | |
298 | } | |
299 | ||
300 | ||
301 | ||
8d2cd130 | 302 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
303 | { | |
304 | // Set a range of event numbers, for which a table | |
305 | // of generated particle will be printed | |
306 | fDebugEventFirst = eventFirst; | |
307 | fDebugEventLast = eventLast; | |
308 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
309 | } | |
310 | ||
311 | void AliGenPythia::Init() | |
312 | { | |
313 | // Initialisation | |
314 | ||
315 | SetMC(AliPythia::Instance()); | |
b88f5cea | 316 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 | 317 | |
8d2cd130 | 318 | // |
319 | fParentWeight=1./Float_t(fNpart); | |
320 | // | |
8d2cd130 | 321 | |
322 | ||
323 | fPythia->SetCKIN(3,fPtHardMin); | |
324 | fPythia->SetCKIN(4,fPtHardMax); | |
325 | fPythia->SetCKIN(7,fYHardMin); | |
326 | fPythia->SetCKIN(8,fYHardMax); | |
327 | ||
1a626d4e | 328 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget); |
8d2cd130 | 329 | // Fragmentation? |
330 | if (fFragmentation) { | |
331 | fPythia->SetMSTP(111,1); | |
332 | } else { | |
333 | fPythia->SetMSTP(111,0); | |
334 | } | |
335 | ||
336 | ||
337 | // initial state radiation | |
338 | fPythia->SetMSTP(61,fGinit); | |
339 | // final state radiation | |
340 | fPythia->SetMSTP(71,fGfinal); | |
341 | // pt - kick | |
342 | if (fPtKick > 0.) { | |
343 | fPythia->SetMSTP(91,1); | |
688950ef | 344 | fPythia->SetPARP(91,fPtKick); |
345 | fPythia->SetPARP(93, 4. * fPtKick); | |
8d2cd130 | 346 | } else { |
347 | fPythia->SetMSTP(91,0); | |
348 | } | |
349 | ||
5fa4b20b | 350 | |
351 | if (fReadFromFile) { | |
352 | fRL = AliRunLoader::Open(fFileName, "Partons"); | |
353 | fRL->LoadKinematics(); | |
354 | fRL->LoadHeader(); | |
355 | } else { | |
356 | fRL = 0x0; | |
357 | } | |
fdea4387 | 358 | // |
359 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc); | |
360 | // Forward Paramters to the AliPythia object | |
361 | fDecayer->SetForceDecay(fForceDecay); | |
beac474c | 362 | // Switch off Heavy Flavors on request |
363 | if (fHFoff) { | |
51387949 | 364 | // Maximum number of quark flavours used in pdf |
beac474c | 365 | fPythia->SetMSTP(58, 3); |
51387949 | 366 | // Maximum number of flavors that can be used in showers |
beac474c | 367 | fPythia->SetMSTJ(45, 3); |
51387949 | 368 | // Switch off g->QQbar splitting in decay table |
369 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
beac474c | 370 | } |
fdea4387 | 371 | |
51387949 | 372 | fDecayer->Init(); |
373 | ||
8d2cd130 | 374 | |
375 | // Parent and Children Selection | |
376 | switch (fProcess) | |
377 | { | |
65f2626c | 378 | case kPyOldUEQ2ordered: |
379 | case kPyOldUEQ2ordered2: | |
380 | case kPyOldPopcorn: | |
381 | break; | |
8d2cd130 | 382 | case kPyCharm: |
383 | case kPyCharmUnforced: | |
adf4d898 | 384 | case kPyCharmPbPbMNR: |
aabc7187 | 385 | case kPyCharmpPbMNR: |
e0e89f40 | 386 | case kPyCharmppMNR: |
387 | case kPyCharmppMNRwmi: | |
8d2cd130 | 388 | fParentSelect[0] = 411; |
389 | fParentSelect[1] = 421; | |
390 | fParentSelect[2] = 431; | |
391 | fParentSelect[3] = 4122; | |
392 | fFlavorSelect = 4; | |
393 | break; | |
adf4d898 | 394 | case kPyD0PbPbMNR: |
395 | case kPyD0pPbMNR: | |
396 | case kPyD0ppMNR: | |
8d2cd130 | 397 | fParentSelect[0] = 421; |
398 | fFlavorSelect = 4; | |
399 | break; | |
90d7b703 | 400 | case kPyDPlusPbPbMNR: |
401 | case kPyDPluspPbMNR: | |
402 | case kPyDPlusppMNR: | |
403 | fParentSelect[0] = 411; | |
404 | fFlavorSelect = 4; | |
405 | break; | |
e0e89f40 | 406 | case kPyDPlusStrangePbPbMNR: |
407 | case kPyDPlusStrangepPbMNR: | |
408 | case kPyDPlusStrangeppMNR: | |
409 | fParentSelect[0] = 431; | |
410 | fFlavorSelect = 4; | |
411 | break; | |
8d2cd130 | 412 | case kPyBeauty: |
adf4d898 | 413 | case kPyBeautyPbPbMNR: |
414 | case kPyBeautypPbMNR: | |
415 | case kPyBeautyppMNR: | |
e0e89f40 | 416 | case kPyBeautyppMNRwmi: |
8d2cd130 | 417 | fParentSelect[0]= 511; |
418 | fParentSelect[1]= 521; | |
419 | fParentSelect[2]= 531; | |
420 | fParentSelect[3]= 5122; | |
421 | fParentSelect[4]= 5132; | |
422 | fParentSelect[5]= 5232; | |
423 | fParentSelect[6]= 5332; | |
424 | fFlavorSelect = 5; | |
425 | break; | |
426 | case kPyBeautyUnforced: | |
427 | fParentSelect[0] = 511; | |
428 | fParentSelect[1] = 521; | |
429 | fParentSelect[2] = 531; | |
430 | fParentSelect[3] = 5122; | |
431 | fParentSelect[4] = 5132; | |
432 | fParentSelect[5] = 5232; | |
433 | fParentSelect[6] = 5332; | |
434 | fFlavorSelect = 5; | |
435 | break; | |
436 | case kPyJpsiChi: | |
437 | case kPyJpsi: | |
438 | fParentSelect[0] = 443; | |
439 | break; | |
f529e69b | 440 | case kPyMbDefault: |
8d2cd130 | 441 | case kPyMb: |
442 | case kPyMbNonDiffr: | |
d7de4a67 | 443 | case kPyMbMSEL1: |
8d2cd130 | 444 | case kPyJets: |
445 | case kPyDirectGamma: | |
e33acb67 | 446 | case kPyLhwgMb: |
8d2cd130 | 447 | break; |
589380c6 | 448 | case kPyW: |
0f6ee828 | 449 | case kPyZ: |
589380c6 | 450 | break; |
8d2cd130 | 451 | } |
452 | // | |
592f8307 | 453 | // |
454 | // JetFinder for Trigger | |
455 | // | |
456 | // Configure detector (EMCAL like) | |
457 | // | |
d7de4a67 | 458 | fPythia->SetPARU(51, fPycellEtaMax); |
459 | fPythia->SetMSTU(51, fPycellNEta); | |
460 | fPythia->SetMSTU(52, fPycellNPhi); | |
592f8307 | 461 | // |
462 | // Configure Jet Finder | |
463 | // | |
d7de4a67 | 464 | fPythia->SetPARU(58, fPycellThreshold); |
465 | fPythia->SetPARU(52, fPycellEtSeed); | |
466 | fPythia->SetPARU(53, fPycellMinEtJet); | |
467 | fPythia->SetPARU(54, fPycellMaxRadius); | |
468 | fPythia->SetMSTU(54, 2); | |
592f8307 | 469 | // |
8d2cd130 | 470 | // This counts the total number of calls to Pyevnt() per run. |
471 | fTrialsRun = 0; | |
472 | fQ = 0.; | |
473 | fX1 = 0.; | |
474 | fX2 = 0.; | |
475 | fNev = 0 ; | |
476 | // | |
1d568bc2 | 477 | // |
478 | // | |
8d2cd130 | 479 | AliGenMC::Init(); |
1d568bc2 | 480 | // |
481 | // | |
482 | // | |
483 | if (fSetNuclei) { | |
484 | fDyBoost = 0; | |
485 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
486 | } | |
d7de4a67 | 487 | |
32d6ef7d | 488 | if (fQuench) { |
5fa4b20b | 489 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d | 490 | } |
3a709cfa | 491 | fPythia->SetPARJ(200, 0.0); |
492 | ||
b976f7d8 | 493 | if (fQuench == 3) { |
494 | // Nestor's change of the splittings | |
495 | fPythia->SetPARJ(200, 0.8); | |
496 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
497 | fPythia->SetMSTJ(42, 2); // angular ordering | |
498 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
499 | fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
500 | fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
501 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
502 | } | |
8d2cd130 | 503 | } |
504 | ||
505 | void AliGenPythia::Generate() | |
506 | { | |
507 | // Generate one event | |
e5c87a3d | 508 | |
8d2cd130 | 509 | fDecayer->ForceDecay(); |
510 | ||
511 | Float_t polar[3] = {0,0,0}; | |
512 | Float_t origin[3] = {0,0,0}; | |
a920faf9 | 513 | Float_t p[4]; |
8d2cd130 | 514 | // converts from mm/c to s |
515 | const Float_t kconv=0.001/2.999792458e8; | |
516 | // | |
517 | Int_t nt=0; | |
518 | Int_t jev=0; | |
519 | Int_t j, kf; | |
520 | fTrials=0; | |
f913ec4f | 521 | fEventTime = 0.; |
522 | ||
2590ccf9 | 523 | |
8d2cd130 | 524 | |
525 | // Set collision vertex position | |
2590ccf9 | 526 | if (fVertexSmear == kPerEvent) Vertex(); |
527 | ||
8d2cd130 | 528 | // event loop |
529 | while(1) | |
530 | { | |
32d6ef7d | 531 | // |
5fa4b20b | 532 | // Produce event |
32d6ef7d | 533 | // |
32d6ef7d | 534 | // |
5fa4b20b | 535 | // Switch hadronisation off |
536 | // | |
537 | fPythia->SetMSTJ(1, 0); | |
32d6ef7d | 538 | // |
5fa4b20b | 539 | // Either produce new event or read partons from file |
540 | // | |
541 | if (!fReadFromFile) { | |
beac474c | 542 | if (!fNewMIS) { |
543 | fPythia->Pyevnt(); | |
544 | } else { | |
545 | fPythia->Pyevnw(); | |
546 | } | |
5fa4b20b | 547 | fNpartons = fPythia->GetN(); |
548 | } else { | |
549 | printf("Loading Event %d\n",AliRunLoader::GetRunLoader()->GetEventNumber()); | |
550 | fRL->GetEvent(AliRunLoader::GetRunLoader()->GetEventNumber()); | |
551 | fPythia->SetN(0); | |
552 | LoadEvent(fRL->Stack(), 0 , 1); | |
553 | fPythia->Pyedit(21); | |
554 | } | |
555 | ||
32d6ef7d | 556 | // |
557 | // Run quenching routine | |
558 | // | |
5fa4b20b | 559 | if (fQuench == 1) { |
560 | fPythia->Quench(); | |
561 | } else if (fQuench == 2){ | |
562 | fPythia->Pyquen(208., 0, 0.); | |
b976f7d8 | 563 | } else if (fQuench == 3) { |
564 | // Quenching is via multiplicative correction of the splittings | |
5fa4b20b | 565 | } |
b976f7d8 | 566 | |
32d6ef7d | 567 | // |
5fa4b20b | 568 | // Switch hadronisation on |
32d6ef7d | 569 | // |
aea21c57 | 570 | fPythia->SetMSTJ(1, 1); |
5fa4b20b | 571 | // |
572 | // .. and perform hadronisation | |
aea21c57 | 573 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
5fa4b20b | 574 | fPythia->Pyexec(); |
8d2cd130 | 575 | fTrials++; |
8d2cd130 | 576 | fPythia->ImportParticles(fParticles,"All"); |
1d568bc2 | 577 | Boost(); |
8d2cd130 | 578 | // |
579 | // | |
580 | // | |
581 | Int_t i; | |
582 | ||
dbd64db6 | 583 | fNprimaries = 0; |
8d2cd130 | 584 | Int_t np = fParticles->GetEntriesFast(); |
5fa4b20b | 585 | |
7c21f297 | 586 | if (np == 0) continue; |
8d2cd130 | 587 | // |
2590ccf9 | 588 | |
8d2cd130 | 589 | // |
590 | Int_t* pParent = new Int_t[np]; | |
591 | Int_t* pSelected = new Int_t[np]; | |
592 | Int_t* trackIt = new Int_t[np]; | |
5fa4b20b | 593 | for (i = 0; i < np; i++) { |
8d2cd130 | 594 | pParent[i] = -1; |
595 | pSelected[i] = 0; | |
596 | trackIt[i] = 0; | |
597 | } | |
598 | ||
599 | Int_t nc = 0; // Total n. of selected particles | |
600 | Int_t nParents = 0; // Selected parents | |
601 | Int_t nTkbles = 0; // Trackable particles | |
f529e69b | 602 | if (fProcess != kPyMbDefault && |
603 | fProcess != kPyMb && | |
604 | fProcess != kPyJets && | |
8d2cd130 | 605 | fProcess != kPyDirectGamma && |
589380c6 | 606 | fProcess != kPyMbNonDiffr && |
d7de4a67 | 607 | fProcess != kPyMbMSEL1 && |
f529e69b | 608 | fProcess != kPyW && |
609 | fProcess != kPyZ && | |
610 | fProcess != kPyCharmppMNRwmi && | |
611 | fProcess != kPyBeautyppMNRwmi) { | |
8d2cd130 | 612 | |
5fa4b20b | 613 | for (i = 0; i < np; i++) { |
2590ccf9 | 614 | TParticle* iparticle = (TParticle *) fParticles->At(i); |
8d2cd130 | 615 | Int_t ks = iparticle->GetStatusCode(); |
616 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
617 | // No initial state partons | |
618 | if (ks==21) continue; | |
619 | // | |
620 | // Heavy Flavor Selection | |
621 | // | |
622 | // quark ? | |
623 | kf = TMath::Abs(kf); | |
624 | Int_t kfl = kf; | |
9ff6c04c | 625 | // Resonance |
f913ec4f | 626 | |
9ff6c04c | 627 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 | 628 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 | 629 | // meson ? |
630 | if (kfl > 10) kfl/=100; | |
631 | // baryon | |
632 | if (kfl > 10) kfl/=10; | |
8d2cd130 | 633 | Int_t ipa = iparticle->GetFirstMother()-1; |
634 | Int_t kfMo = 0; | |
f913ec4f | 635 | // |
636 | // Establish mother daughter relation between heavy quarks and mesons | |
637 | // | |
638 | if (kf >= fFlavorSelect && kf <= 6) { | |
639 | Int_t idau = iparticle->GetFirstDaughter() - 1; | |
640 | if (idau > -1) { | |
641 | TParticle* daughter = (TParticle *) fParticles->At(idau); | |
642 | Int_t pdgD = daughter->GetPdgCode(); | |
643 | if (pdgD == 91 || pdgD == 92) { | |
644 | Int_t jmin = daughter->GetFirstDaughter() - 1; | |
645 | Int_t jmax = daughter->GetLastDaughter() - 1; | |
646 | for (Int_t j = jmin; j <= jmax; j++) | |
647 | ((TParticle *) fParticles->At(j))->SetFirstMother(i+1); | |
648 | } // is string or cluster | |
649 | } // has daughter | |
650 | } // heavy quark | |
8d2cd130 | 651 | |
f913ec4f | 652 | |
8d2cd130 | 653 | if (ipa > -1) { |
654 | TParticle * mother = (TParticle *) fParticles->At(ipa); | |
655 | kfMo = TMath::Abs(mother->GetPdgCode()); | |
656 | } | |
f913ec4f | 657 | |
8d2cd130 | 658 | // What to keep in Stack? |
659 | Bool_t flavorOK = kFALSE; | |
660 | Bool_t selectOK = kFALSE; | |
661 | if (fFeedDownOpt) { | |
32d6ef7d | 662 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 | 663 | } else { |
32d6ef7d | 664 | if (kfl > fFlavorSelect) { |
665 | nc = -1; | |
666 | break; | |
667 | } | |
668 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
8d2cd130 | 669 | } |
670 | switch (fStackFillOpt) { | |
671 | case kFlavorSelection: | |
32d6ef7d | 672 | selectOK = kTRUE; |
673 | break; | |
8d2cd130 | 674 | case kParentSelection: |
32d6ef7d | 675 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
676 | break; | |
8d2cd130 | 677 | } |
678 | if (flavorOK && selectOK) { | |
679 | // | |
680 | // Heavy flavor hadron or quark | |
681 | // | |
682 | // Kinematic seletion on final state heavy flavor mesons | |
683 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
684 | { | |
9ff6c04c | 685 | continue; |
8d2cd130 | 686 | } |
687 | pSelected[i] = 1; | |
688 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
689 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
690 | } else { | |
691 | // Kinematic seletion on decay products | |
692 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
9ff6c04c | 693 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 | 694 | { |
9ff6c04c | 695 | continue; |
8d2cd130 | 696 | } |
697 | // | |
698 | // Decay products | |
699 | // Select if mother was selected and is not tracked | |
700 | ||
701 | if (pSelected[ipa] && | |
702 | !trackIt[ipa] && // mother will be tracked ? | |
703 | kfMo != 5 && // mother is b-quark, don't store fragments | |
704 | kfMo != 4 && // mother is c-quark, don't store fragments | |
705 | kf != 92) // don't store string | |
706 | { | |
707 | // | |
708 | // Semi-stable or de-selected: diselect decay products: | |
709 | // | |
710 | // | |
711 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
712 | { | |
713 | Int_t ipF = iparticle->GetFirstDaughter(); | |
714 | Int_t ipL = iparticle->GetLastDaughter(); | |
715 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
716 | } | |
717 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
718 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
719 | } | |
720 | } | |
721 | if (pSelected[i] == -1) pSelected[i] = 0; | |
722 | if (!pSelected[i]) continue; | |
723 | // Count quarks only if you did not include fragmentation | |
724 | if (fFragmentation && kf <= 10) continue; | |
9ff6c04c | 725 | |
8d2cd130 | 726 | nc++; |
727 | // Decision on tracking | |
728 | trackIt[i] = 0; | |
729 | // | |
730 | // Track final state particle | |
731 | if (ks == 1) trackIt[i] = 1; | |
732 | // Track semi-stable particles | |
d25cfd65 | 733 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 | 734 | // Track particles selected by process if undecayed. |
735 | if (fForceDecay == kNoDecay) { | |
736 | if (ParentSelected(kf)) trackIt[i] = 1; | |
737 | } else { | |
738 | if (ParentSelected(kf)) trackIt[i] = 0; | |
739 | } | |
740 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
741 | // | |
742 | // | |
743 | ||
744 | } // particle selection loop | |
745 | if (nc > 0) { | |
746 | for (i = 0; i<np; i++) { | |
747 | if (!pSelected[i]) continue; | |
748 | TParticle * iparticle = (TParticle *) fParticles->At(i); | |
749 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
750 | Int_t ks = iparticle->GetStatusCode(); | |
751 | p[0] = iparticle->Px(); | |
752 | p[1] = iparticle->Py(); | |
753 | p[2] = iparticle->Pz(); | |
a920faf9 | 754 | p[3] = iparticle->Energy(); |
755 | ||
2590ccf9 | 756 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
757 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
758 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
759 | ||
8d2cd130 | 760 | Float_t tof = kconv*iparticle->T(); |
761 | Int_t ipa = iparticle->GetFirstMother()-1; | |
762 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
a920faf9 | 763 | |
764 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
765 | p[0], p[1], p[2], p[3], | |
766 | origin[0], origin[1], origin[2], tof, | |
767 | polar[0], polar[1], polar[2], | |
768 | kPPrimary, nt, 1., ks); | |
8d2cd130 | 769 | pParent[i] = nt; |
dbd64db6 | 770 | KeepTrack(nt); |
771 | fNprimaries++; | |
642f15cf | 772 | } // PushTrack loop |
8d2cd130 | 773 | } |
774 | } else { | |
775 | nc = GenerateMB(); | |
776 | } // mb ? | |
f913ec4f | 777 | |
778 | GetSubEventTime(); | |
8d2cd130 | 779 | |
234f6d32 | 780 | delete[] pParent; |
781 | delete[] pSelected; | |
782 | delete[] trackIt; | |
8d2cd130 | 783 | |
784 | if (nc > 0) { | |
785 | switch (fCountMode) { | |
786 | case kCountAll: | |
787 | // printf(" Count all \n"); | |
788 | jev += nc; | |
789 | break; | |
790 | case kCountParents: | |
791 | // printf(" Count parents \n"); | |
792 | jev += nParents; | |
793 | break; | |
794 | case kCountTrackables: | |
795 | // printf(" Count trackable \n"); | |
796 | jev += nTkbles; | |
797 | break; | |
798 | } | |
799 | if (jev >= fNpart || fNpart == -1) { | |
800 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
e0e89f40 | 801 | |
8d2cd130 | 802 | fQ += fPythia->GetVINT(51); |
803 | fX1 += fPythia->GetVINT(41); | |
804 | fX2 += fPythia->GetVINT(42); | |
805 | fTrialsRun += fTrials; | |
806 | fNev++; | |
807 | MakeHeader(); | |
808 | break; | |
809 | } | |
810 | } | |
811 | } // event loop | |
812 | SetHighWaterMark(nt); | |
813 | // adjust weight due to kinematic selection | |
b88f5cea | 814 | // AdjustWeights(); |
8d2cd130 | 815 | // get cross-section |
816 | fXsection=fPythia->GetPARI(1); | |
817 | } | |
818 | ||
819 | Int_t AliGenPythia::GenerateMB() | |
820 | { | |
821 | // | |
822 | // Min Bias selection and other global selections | |
823 | // | |
824 | Int_t i, kf, nt, iparent; | |
825 | Int_t nc = 0; | |
bf950da8 | 826 | Float_t p[4]; |
8d2cd130 | 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 | ||
e0e89f40 | 832 | |
833 | ||
5fa4b20b | 834 | Int_t np = (fHadronisation) ? fParticles->GetEntriesFast() : fNpartons; |
aea21c57 | 835 | |
5fa4b20b | 836 | |
e0e89f40 | 837 | |
8d2cd130 | 838 | Int_t* pParent = new Int_t[np]; |
839 | for (i=0; i< np; i++) pParent[i] = -1; | |
840 | if (fProcess == kPyJets || fProcess == kPyDirectGamma) { | |
841 | TParticle* jet1 = (TParticle *) fParticles->At(6); | |
842 | TParticle* jet2 = (TParticle *) fParticles->At(7); | |
234f6d32 | 843 | if (!CheckTrigger(jet1, jet2)) { |
844 | delete [] pParent; | |
845 | return 0; | |
846 | } | |
8d2cd130 | 847 | } |
e0e89f40 | 848 | |
9fd8e520 | 849 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL |
850 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
ec2c406e | 851 | |
852 | Bool_t ok = kFALSE; | |
853 | ||
854 | Int_t pdg = 0; | |
9fd8e520 | 855 | if (fFragPhotonInCalo) pdg = 22 ; // Photon |
ec2c406e | 856 | else if (fPi0InCalo) pdg = 111 ; // Pi0 |
857 | ||
858 | for (i=0; i< np; i++) { | |
859 | TParticle* iparticle = (TParticle *) fParticles->At(i); | |
860 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && | |
9fd8e520 | 861 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ |
562cbbcf | 862 | Int_t imother = iparticle->GetFirstMother() - 1; |
21f3a383 | 863 | TParticle* pmother = (TParticle *) fParticles->At(imother); |
9fd8e520 | 864 | if(pdg == 111 || |
21f3a383 | 865 | (pdg == 22 && pmother->GetStatusCode() != 11))//No photon from hadron decay |
9fd8e520 | 866 | { |
867 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
868 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
869 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || | |
870 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
871 | ok =kTRUE; | |
872 | } | |
ec2c406e | 873 | } |
874 | } | |
875 | if(!ok) | |
876 | return 0; | |
877 | } | |
878 | ||
90a236ce | 879 | |
880 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
881 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
882 | ||
883 | Bool_t okd = kFALSE; | |
884 | ||
885 | Int_t pdg = 22; | |
886 | Int_t iphcand = -1; | |
887 | for (i=0; i< np; i++) { | |
888 | TParticle* iparticle = (TParticle *) fParticles->At(i); | |
889 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
890 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
891 | ||
892 | if(iparticle->GetStatusCode() == 1 | |
893 | && iparticle->GetPdgCode() == pdg | |
894 | && iparticle->Pt() > fPhotonMinPt | |
895 | && eta > fPHOSEta){ | |
896 | ||
897 | // first check if the photon is in PHOS phi | |
898 | if(IsInPHOS(phi,eta)){ | |
899 | okd = kTRUE; | |
900 | break; | |
901 | } | |
902 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
903 | ||
904 | } | |
905 | } | |
906 | ||
907 | if(!okd && iphcand != -1) // execute rotation in phi | |
908 | RotatePhi(iphcand,okd); | |
909 | ||
910 | if(!okd) | |
911 | return 0; | |
912 | } | |
913 | ||
7ce1321b | 914 | if (fTriggerParticle) { |
915 | Bool_t triggered = kFALSE; | |
916 | for (i = 0; i < np; i++) { | |
917 | TParticle * iparticle = (TParticle *) fParticles->At(i); | |
918 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
38db0ee6 | 919 | if (kf != fTriggerParticle) continue; |
7ce1321b | 920 | if (iparticle->Pt() == 0.) continue; |
921 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
922 | triggered = kTRUE; | |
923 | break; | |
924 | } | |
234f6d32 | 925 | if (!triggered) { |
926 | delete [] pParent; | |
927 | return 0; | |
928 | } | |
7ce1321b | 929 | } |
e0e89f40 | 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) { | |
935 | TParticle *hvq; | |
936 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; | |
937 | Float_t yQ; | |
938 | Int_t pdgQ; | |
939 | for(i=0; i<np; i++) { | |
940 | hvq = (TParticle*)fParticles->At(i); | |
941 | pdgQ = hvq->GetPdgCode(); | |
942 | if(TMath::Abs(pdgQ) != fFlavorSelect) continue; | |
943 | if(pdgQ>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
944 | yQ = 0.5*TMath::Log((hvq->Energy()+hvq->Pz()+1.e-13)/ | |
945 | (hvq->Energy()-hvq->Pz()+1.e-13)); | |
946 | if(yQ>fYMin && yQ<fYMax) inYcut=kTRUE; | |
947 | } | |
948 | if (!theQ || !theQbar || !inYcut) { | |
234f6d32 | 949 | delete[] pParent; |
e0e89f40 | 950 | return 0; |
951 | } | |
952 | } | |
aea21c57 | 953 | |
0f6ee828 | 954 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
f529e69b | 955 | if ( (fProcess == kPyW || |
956 | fProcess == kPyZ || | |
957 | fProcess == kPyMbDefault || | |
958 | fProcess == kPyMb || | |
959 | fProcess == kPyMbNonDiffr) | |
0f6ee828 | 960 | && (fCutOnChild == 1) ) { |
961 | if ( !CheckKinematicsOnChild() ) { | |
234f6d32 | 962 | delete[] pParent; |
0f6ee828 | 963 | return 0; |
964 | } | |
aea21c57 | 965 | } |
966 | ||
967 | ||
f913ec4f | 968 | for (i = 0; i < np; i++) { |
8d2cd130 | 969 | Int_t trackIt = 0; |
970 | TParticle * iparticle = (TParticle *) fParticles->At(i); | |
971 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
972 | Int_t ks = iparticle->GetStatusCode(); | |
973 | Int_t km = iparticle->GetFirstMother(); | |
974 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
975 | (ks != 1) || | |
976 | (fProcess == kPyJets && ks == 21 && km == 0 && i>1)) { | |
977 | nc++; | |
978 | if (ks == 1) trackIt = 1; | |
979 | Int_t ipa = iparticle->GetFirstMother()-1; | |
980 | ||
981 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
982 | ||
983 | // | |
984 | // store track information | |
985 | p[0] = iparticle->Px(); | |
986 | p[1] = iparticle->Py(); | |
987 | p[2] = iparticle->Pz(); | |
a920faf9 | 988 | p[3] = iparticle->Energy(); |
1406f599 | 989 | |
a920faf9 | 990 | |
2590ccf9 | 991 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
992 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
993 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
994 | ||
f913ec4f | 995 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 | 996 | |
997 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
998 | p[0], p[1], p[2], p[3], | |
999 | origin[0], origin[1], origin[2], tof, | |
1000 | polar[0], polar[1], polar[2], | |
1001 | kPPrimary, nt, 1., ks); | |
dbd64db6 | 1002 | fNprimaries++; |
5fa4b20b | 1003 | // |
1004 | // Special Treatment to store color-flow | |
1005 | // | |
1006 | if (ks == 3 || ks == 13 || ks == 14) { | |
1007 | TParticle* particle = 0; | |
1008 | if (fStack) { | |
1009 | particle = fStack->Particle(nt); | |
1010 | } else { | |
1011 | particle = gAlice->Stack()->Particle(nt); | |
1012 | } | |
1013 | particle->SetFirstDaughter(fPythia->GetK(2, i)); | |
1014 | particle->SetLastDaughter(fPythia->GetK(3, i)); | |
1015 | } | |
1016 | ||
8d2cd130 | 1017 | KeepTrack(nt); |
1018 | pParent[i] = nt; | |
f913ec4f | 1019 | SetHighWaterMark(nt); |
1020 | ||
8d2cd130 | 1021 | } // select particle |
1022 | } // particle loop | |
1023 | ||
234f6d32 | 1024 | delete[] pParent; |
e0e89f40 | 1025 | |
f913ec4f | 1026 | return 1; |
8d2cd130 | 1027 | } |
1028 | ||
1029 | ||
1030 | void AliGenPythia::FinishRun() | |
1031 | { | |
1032 | // Print x-section summary | |
1033 | fPythia->Pystat(1); | |
2779fc64 | 1034 | |
1035 | if (fNev > 0.) { | |
1036 | fQ /= fNev; | |
1037 | fX1 /= fNev; | |
1038 | fX2 /= fNev; | |
1039 | } | |
1040 | ||
8d2cd130 | 1041 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
1042 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
8d2cd130 | 1043 | } |
1044 | ||
7184e472 | 1045 | void AliGenPythia::AdjustWeights() const |
8d2cd130 | 1046 | { |
1047 | // Adjust the weights after generation of all events | |
1048 | // | |
e2bddf81 | 1049 | if (gAlice) { |
1050 | TParticle *part; | |
1051 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1052 | for (Int_t i=0; i<ntrack; i++) { | |
1053 | part= gAlice->GetMCApp()->Particle(i); | |
1054 | part->SetWeight(part->GetWeight()*fKineBias); | |
1055 | } | |
8d2cd130 | 1056 | } |
1057 | } | |
1058 | ||
1059 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2) | |
1060 | { | |
1061 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1d568bc2 | 1062 | |
1a626d4e | 1063 | fAProjectile = a1; |
1064 | fATarget = a2; | |
1d568bc2 | 1065 | fSetNuclei = kTRUE; |
8d2cd130 | 1066 | } |
1067 | ||
1068 | ||
1069 | void AliGenPythia::MakeHeader() | |
1070 | { | |
7184e472 | 1071 | // |
1072 | // Make header for the simulated event | |
1073 | // | |
183a5ca9 | 1074 | if (gAlice) { |
1075 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
f913ec4f | 1076 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 | 1077 | } |
1078 | ||
8d2cd130 | 1079 | // Builds the event header, to be called after each event |
e5c87a3d | 1080 | if (fHeader) delete fHeader; |
1081 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
8d2cd130 | 1082 | // |
1083 | // Event type | |
e5c87a3d | 1084 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 | 1085 | // |
1086 | // Number of trials | |
e5c87a3d | 1087 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 | 1088 | // |
1089 | // Event Vertex | |
d25cfd65 | 1090 | fHeader->SetPrimaryVertex(fVertex); |
dbd64db6 | 1091 | |
1092 | // | |
1093 | // Number of primaries | |
1094 | fHeader->SetNProduced(fNprimaries); | |
8d2cd130 | 1095 | // |
1096 | // Jets that have triggered | |
f913ec4f | 1097 | |
8d2cd130 | 1098 | if (fProcess == kPyJets) |
1099 | { | |
1100 | Int_t ntrig, njet; | |
1101 | Float_t jets[4][10]; | |
1102 | GetJets(njet, ntrig, jets); | |
9ff6c04c | 1103 | |
8d2cd130 | 1104 | |
1105 | for (Int_t i = 0; i < ntrig; i++) { | |
e5c87a3d | 1106 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 | 1107 | jets[3][i]); |
1108 | } | |
1109 | } | |
5fa4b20b | 1110 | // |
1111 | // Copy relevant information from external header, if present. | |
1112 | // | |
1113 | Float_t uqJet[4]; | |
1114 | ||
1115 | if (fRL) { | |
1116 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1117 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1118 | { | |
1119 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1120 | ||
1121 | ||
1122 | exHeader->TriggerJet(i, uqJet); | |
1123 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1124 | } | |
1125 | } | |
1126 | // | |
1127 | // Store quenching parameters | |
1128 | // | |
1129 | if (fQuench){ | |
1130 | Double_t z[4]; | |
1131 | Double_t xp, yp; | |
7c21f297 | 1132 | if (fQuench == 1) { |
1133 | // Pythia::Quench() | |
1134 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1135 | } else { | |
1136 | // Pyquen | |
1137 | Double_t r1 = PARIMP.rb1; | |
1138 | Double_t r2 = PARIMP.rb2; | |
1139 | Double_t b = PARIMP.b1; | |
1140 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1141 | Double_t phi = PARIMP.psib1; | |
1142 | xp = r * TMath::Cos(phi); | |
1143 | yp = r * TMath::Sin(phi); | |
1144 | ||
1145 | } | |
1146 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); | |
1147 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1148 | } | |
beac474c | 1149 | // |
1150 | // Store pt^hard | |
1151 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); | |
5fa4b20b | 1152 | // |
cf57b268 | 1153 | // Pass header |
5fa4b20b | 1154 | // |
cf57b268 | 1155 | AddHeader(fHeader); |
4c4eac97 | 1156 | fHeader = 0x0; |
8d2cd130 | 1157 | } |
cf57b268 | 1158 | |
8d2cd130 | 1159 | Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) |
1160 | { | |
1161 | // Check the kinematic trigger condition | |
1162 | // | |
1163 | Double_t eta[2]; | |
1164 | eta[0] = jet1->Eta(); | |
1165 | eta[1] = jet2->Eta(); | |
1166 | Double_t phi[2]; | |
1167 | phi[0] = jet1->Phi(); | |
1168 | phi[1] = jet2->Phi(); | |
1169 | Int_t pdg[2]; | |
1170 | pdg[0] = jet1->GetPdgCode(); | |
1171 | pdg[1] = jet2->GetPdgCode(); | |
1172 | Bool_t triggered = kFALSE; | |
1173 | ||
1174 | if (fProcess == kPyJets) { | |
1175 | Int_t njets = 0; | |
1176 | Int_t ntrig = 0; | |
1177 | Float_t jets[4][10]; | |
1178 | // | |
1179 | // Use Pythia clustering on parton level to determine jet axis | |
1180 | // | |
1181 | GetJets(njets, ntrig, jets); | |
1182 | ||
76d6ba9a | 1183 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; |
8d2cd130 | 1184 | // |
1185 | } else { | |
1186 | Int_t ij = 0; | |
1187 | Int_t ig = 1; | |
1188 | if (pdg[0] == kGamma) { | |
1189 | ij = 1; | |
1190 | ig = 0; | |
1191 | } | |
1192 | //Check eta range first... | |
1193 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1194 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1195 | { | |
1196 | //Eta is okay, now check phi range | |
1197 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1198 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1199 | { | |
1200 | triggered = kTRUE; | |
1201 | } | |
1202 | } | |
1203 | } | |
1204 | return triggered; | |
1205 | } | |
aea21c57 | 1206 | |
1207 | ||
aea21c57 | 1208 | |
7184e472 | 1209 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
1210 | // | |
1211 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1212 | // | |
aea21c57 | 1213 | Bool_t checking = kFALSE; |
1214 | Int_t j, kcode, ks, km; | |
1215 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1216 | Int_t numberOfAcceptedParticles = 1; | |
1217 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
1218 | Int_t npart = fParticles->GetEntriesFast(); | |
1219 | ||
0f6ee828 | 1220 | for (j = 0; j<npart; j++) { |
aea21c57 | 1221 | TParticle * jparticle = (TParticle *) fParticles->At(j); |
1222 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); | |
1223 | ks = jparticle->GetStatusCode(); | |
1224 | km = jparticle->GetFirstMother(); | |
1225 | ||
1226 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1227 | nPartAcc++; | |
1228 | } | |
0f6ee828 | 1229 | if( numberOfAcceptedParticles <= nPartAcc){ |
1230 | checking = kTRUE; | |
1231 | break; | |
1232 | } | |
aea21c57 | 1233 | } |
0f6ee828 | 1234 | |
aea21c57 | 1235 | return checking; |
aea21c57 | 1236 | } |
1237 | ||
5fa4b20b | 1238 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 | 1239 | { |
1240 | // | |
1241 | // Load event into Pythia Common Block | |
1242 | // | |
5fa4b20b | 1243 | |
32d6ef7d | 1244 | Int_t npart = stack -> GetNprimary(); |
1245 | Int_t n0 = 0; | |
1246 | ||
1247 | if (!flag) { | |
1248 | (fPythia->GetPyjets())->N = npart; | |
1249 | } else { | |
1250 | n0 = (fPythia->GetPyjets())->N; | |
1251 | (fPythia->GetPyjets())->N = n0 + npart; | |
1252 | } | |
1253 | ||
1254 | ||
8d2cd130 | 1255 | for (Int_t part = 0; part < npart; part++) { |
7184e472 | 1256 | TParticle *mPart = stack->Particle(part); |
32d6ef7d | 1257 | |
7184e472 | 1258 | Int_t kf = mPart->GetPdgCode(); |
1259 | Int_t ks = mPart->GetStatusCode(); | |
1260 | Int_t idf = mPart->GetFirstDaughter(); | |
1261 | Int_t idl = mPart->GetLastDaughter(); | |
5fa4b20b | 1262 | |
1263 | if (reHadr) { | |
1264 | if (ks == 11 || ks == 12) { | |
1265 | ks -= 10; | |
1266 | idf = -1; | |
1267 | idl = -1; | |
1268 | } | |
1269 | } | |
32d6ef7d | 1270 | |
7184e472 | 1271 | Float_t px = mPart->Px(); |
1272 | Float_t py = mPart->Py(); | |
1273 | Float_t pz = mPart->Pz(); | |
1274 | Float_t e = mPart->Energy(); | |
1275 | Float_t m = mPart->GetCalcMass(); | |
8d2cd130 | 1276 | |
1277 | ||
32d6ef7d | 1278 | (fPythia->GetPyjets())->P[0][part+n0] = px; |
1279 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1280 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1281 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1282 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
8d2cd130 | 1283 | |
32d6ef7d | 1284 | (fPythia->GetPyjets())->K[1][part+n0] = kf; |
1285 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
5fa4b20b | 1286 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; |
1287 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
7184e472 | 1288 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; |
8d2cd130 | 1289 | } |
1290 | } | |
1291 | ||
5fa4b20b | 1292 | |
014a9521 | 1293 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 | 1294 | { |
1295 | // | |
1296 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1297 | // | |
1298 | // | |
8d2cd130 | 1299 | // |
1300 | // Save jets | |
1301 | Int_t n = fPythia->GetN(); | |
1302 | ||
1303 | // | |
1304 | // Run Jet Finder | |
1305 | fPythia->Pycell(njets); | |
1306 | Int_t i; | |
1307 | for (i = 0; i < njets; i++) { | |
1308 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1309 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1310 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1311 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1312 | ||
1313 | jets[0][i] = px; | |
1314 | jets[1][i] = py; | |
1315 | jets[2][i] = pz; | |
1316 | jets[3][i] = e; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | ||
1321 | ||
1322 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1323 | { | |
1324 | // | |
1325 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1326 | // | |
1327 | Int_t n = fPythia->GetN(); | |
1328 | nJets = 0; | |
1329 | nJetsTrig = 0; | |
1330 | if (fJetReconstruction == kCluster) { | |
1331 | // | |
1332 | // Configure cluster algorithm | |
1333 | // | |
1334 | fPythia->SetPARU(43, 2.); | |
1335 | fPythia->SetMSTU(41, 1); | |
1336 | // | |
1337 | // Call cluster algorithm | |
1338 | // | |
1339 | fPythia->Pyclus(nJets); | |
1340 | // | |
1341 | // Loading jets from common block | |
1342 | // | |
1343 | } else { | |
592f8307 | 1344 | |
8d2cd130 | 1345 | // |
1346 | // Run Jet Finder | |
1347 | fPythia->Pycell(nJets); | |
1348 | } | |
1349 | ||
1350 | Int_t i; | |
1351 | for (i = 0; i < nJets; i++) { | |
1352 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1353 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1354 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1355 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1356 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
a920faf9 | 1357 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 | 1358 | Float_t theta = TMath::ATan2(pt,pz); |
1359 | Float_t et = e * TMath::Sin(theta); | |
1360 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
8d2cd130 | 1361 | if ( |
1362 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
675eb105 | 1363 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 | 1364 | et > fEtMinJet && et < fEtMaxJet |
1365 | ) | |
1366 | { | |
1367 | jets[0][nJetsTrig] = px; | |
1368 | jets[1][nJetsTrig] = py; | |
1369 | jets[2][nJetsTrig] = pz; | |
1370 | jets[3][nJetsTrig] = e; | |
1371 | nJetsTrig++; | |
5fa4b20b | 1372 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 | 1373 | } else { |
1374 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); | |
1375 | } | |
1376 | } | |
1377 | } | |
1378 | ||
f913ec4f | 1379 | void AliGenPythia::GetSubEventTime() |
1380 | { | |
1381 | // Calculates time of the next subevent | |
9d7108a7 | 1382 | fEventTime = 0.; |
1383 | if (fEventsTime) { | |
1384 | TArrayF &array = *fEventsTime; | |
1385 | fEventTime = array[fCurSubEvent++]; | |
1386 | } | |
1387 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1388 | return; | |
f913ec4f | 1389 | } |
8d2cd130 | 1390 | |
ec2c406e | 1391 | Bool_t AliGenPythia::IsInEMCAL(Float_t phi, Float_t eta) |
1392 | { | |
1393 | // Is particle in EMCAL acceptance? | |
ec2c406e | 1394 | // phi in degrees, etamin=-etamax |
9fd8e520 | 1395 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && |
1396 | eta < fEMCALEta ) | |
ec2c406e | 1397 | return kTRUE; |
1398 | else | |
1399 | return kFALSE; | |
1400 | } | |
1401 | ||
1402 | Bool_t AliGenPythia::IsInPHOS(Float_t phi, Float_t eta) | |
1403 | { | |
1404 | // Is particle in PHOS acceptance? | |
1405 | // Acceptance slightly larger considered. | |
1406 | // phi in degrees, etamin=-etamax | |
9fd8e520 | 1407 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && |
1408 | eta < fPHOSEta ) | |
ec2c406e | 1409 | return kTRUE; |
1410 | else | |
1411 | return kFALSE; | |
1412 | } | |
1413 | ||
90a236ce | 1414 | void AliGenPythia::RotatePhi(Int_t iphcand, Bool_t& okdd) |
1415 | { | |
1416 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1417 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1418 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1419 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1420 | ||
1421 | //calculate deltaphi | |
1422 | TParticle* ph = (TParticle *) fParticles->At(iphcand); | |
1423 | Double_t phphi = ph->Phi(); | |
1424 | Double_t deltaphi = phiPHOS - phphi; | |
1425 | ||
1426 | ||
1427 | ||
1428 | //loop for all particles and produce the phi rotation | |
1429 | Int_t np = (fHadronisation) ? fParticles->GetEntriesFast() : fNpartons; | |
1430 | Double_t oldphi, newphi; | |
1431 | Double_t newVx, newVy, R, Vz, time; | |
1432 | Double_t newPx, newPy, pt, Pz, e; | |
1433 | for(Int_t i=0; i< np; i++) { | |
1434 | TParticle* iparticle = (TParticle *) fParticles->At(i); | |
1435 | oldphi = iparticle->Phi(); | |
1436 | newphi = oldphi + deltaphi; | |
1437 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1438 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1439 | ||
1440 | R = iparticle->R(); | |
1441 | newVx = R*TMath::Cos(newphi); | |
1442 | newVy = R*TMath::Sin(newphi); | |
1443 | Vz = iparticle->Vz(); // don't transform | |
1444 | time = iparticle->T(); // don't transform | |
1445 | ||
1446 | pt = iparticle->Pt(); | |
1447 | newPx = pt*TMath::Cos(newphi); | |
1448 | newPy = pt*TMath::Sin(newphi); | |
1449 | Pz = iparticle->Pz(); // don't transform | |
1450 | e = iparticle->Energy(); // don't transform | |
1451 | ||
1452 | // apply rotation | |
1453 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1454 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1455 | ||
1456 | } //end particle loop | |
1457 | ||
1458 | // now let's check that we put correctly the candidate photon in PHOS | |
1459 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1460 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1461 | if(IsInPHOS(phi,eta)) | |
1462 | okdd = kTRUE; | |
1463 | } | |
ec2c406e | 1464 | |
1465 | ||
8d2cd130 | 1466 | #ifdef never |
1467 | void AliGenPythia::Streamer(TBuffer &R__b) | |
1468 | { | |
1469 | // Stream an object of class AliGenPythia. | |
1470 | ||
1471 | if (R__b.IsReading()) { | |
1472 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1473 | AliGenerator::Streamer(R__b); | |
1474 | R__b >> (Int_t&)fProcess; | |
1475 | R__b >> (Int_t&)fStrucFunc; | |
1476 | R__b >> (Int_t&)fForceDecay; | |
1477 | R__b >> fEnergyCMS; | |
1478 | R__b >> fKineBias; | |
1479 | R__b >> fTrials; | |
1480 | fParentSelect.Streamer(R__b); | |
1481 | fChildSelect.Streamer(R__b); | |
1482 | R__b >> fXsection; | |
1483 | // (AliPythia::Instance())->Streamer(R__b); | |
1484 | R__b >> fPtHardMin; | |
1485 | R__b >> fPtHardMax; | |
1486 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1487 | } else { | |
1488 | R__b.WriteVersion(AliGenPythia::IsA()); | |
1489 | AliGenerator::Streamer(R__b); | |
1490 | R__b << (Int_t)fProcess; | |
1491 | R__b << (Int_t)fStrucFunc; | |
1492 | R__b << (Int_t)fForceDecay; | |
1493 | R__b << fEnergyCMS; | |
1494 | R__b << fKineBias; | |
1495 | R__b << fTrials; | |
1496 | fParentSelect.Streamer(R__b); | |
1497 | fChildSelect.Streamer(R__b); | |
1498 | R__b << fXsection; | |
1499 | // R__b << fPythia; | |
1500 | R__b << fPtHardMin; | |
1501 | R__b << fPtHardMax; | |
1502 | // fDecayer->Streamer(R__b); | |
1503 | } | |
1504 | } | |
1505 | #endif | |
1506 | ||
90d7b703 | 1507 | |
589380c6 | 1508 |