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36b81802 | 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 | /* $Id$ */ |
36b81802 | 17 | |
18 | // Generator using HIJING as an external generator | |
19 | // The main HIJING options are accessable for the user through this interface. | |
20 | // Uses the THijing implementation of TGenerator. | |
14cae7e9 | 21 | // Author: |
22 | // Andreas Morsch (andreas.morsch@cern.ch) | |
36b81802 | 23 | // |
36b81802 | 24 | |
36b81802 | 25 | #include <TGraph.h> |
26 | #include <THijing.h> | |
27 | #include <TLorentzVector.h> | |
28 | #include <TPDGCode.h> | |
29 | #include <TParticle.h> | |
30 | ||
31 | #include "AliGenHijing.h" | |
32 | #include "AliGenHijingEventHeader.h" | |
33 | #include "AliRun.h" | |
7cdba479 | 34 | #include "AliHijingRndm.h" |
36b81802 | 35 | |
7cdba479 | 36 | ClassImp(AliGenHijing) |
36b81802 | 37 | |
38 | AliGenHijing::AliGenHijing() | |
39 | :AliGenMC() | |
40 | { | |
41 | // Constructor | |
42 | fParticles = 0; | |
43 | fHijing = 0; | |
44 | fDsigmaDb = 0; | |
45 | fDnDb = 0; | |
7cdba479 | 46 | AliHijingRndm::SetHijingRandom(GetRandom()); |
36b81802 | 47 | } |
48 | ||
49 | AliGenHijing::AliGenHijing(Int_t npart) | |
50 | :AliGenMC(npart) | |
51 | { | |
52 | // Default PbPb collisions at 5. 5 TeV | |
53 | // | |
54 | fName = "Hijing"; | |
55 | fTitle= "Particle Generator using HIJING"; | |
56 | ||
57 | SetEnergyCMS(); | |
58 | SetImpactParameterRange(); | |
36b81802 | 59 | SetBoostLHC(); |
60 | SetJetEtaRange(); | |
61 | SetJetPhiRange(); | |
62 | ||
63 | fKeep = 0; | |
64 | fQuench = 1; | |
65 | fShadowing = 1; | |
66 | fTrigger = 0; | |
67 | fDecaysOff = 1; | |
68 | fEvaluate = 0; | |
69 | fSelectAll = 0; | |
70 | fFlavor = 0; | |
71 | fSpectators = 1; | |
72 | fDsigmaDb = 0; | |
73 | fDnDb = 0; | |
74 | fPtMinJet = -2.5; | |
75 | fRadiation = 3; | |
0c0c6204 | 76 | // |
36b81802 | 77 | SetSimpleJets(); |
78 | SetNoGammas(); | |
f82795ff | 79 | SetRandomPz(); |
80 | SwitchOffHeavyQuarks(kFALSE); | |
36b81802 | 81 | // |
82 | fParticles = new TClonesArray("TParticle",10000); | |
83 | // | |
84 | // Set random number generator | |
7cdba479 | 85 | AliHijingRndm::SetHijingRandom(GetRandom()); |
36b81802 | 86 | fHijing = 0; |
87 | ||
88 | } | |
89 | ||
9c63d20a | 90 | AliGenHijing::AliGenHijing(const AliGenHijing & hijing): |
91 | AliGenMC(hijing) | |
36b81802 | 92 | { |
93 | // copy constructor | |
94 | } | |
95 | ||
96 | ||
97 | AliGenHijing::~AliGenHijing() | |
98 | { | |
99 | // Destructor | |
100 | if ( fDsigmaDb) delete fDsigmaDb; | |
101 | if ( fDnDb) delete fDnDb; | |
102 | delete fParticles; | |
103 | } | |
104 | ||
105 | void AliGenHijing::Init() | |
106 | { | |
107 | // Initialisation | |
108 | fFrame.Resize(8); | |
109 | fTarget.Resize(8); | |
110 | fProjectile.Resize(8); | |
111 | ||
112 | SetMC(new THijing(fEnergyCMS, fFrame, fProjectile, fTarget, | |
113 | fAProjectile, fZProjectile, fATarget, fZTarget, | |
114 | fMinImpactParam, fMaxImpactParam)); | |
115 | ||
b88f5cea | 116 | fHijing=(THijing*) fMCEvGen; |
36b81802 | 117 | fHijing->SetIHPR2(2, fRadiation); |
118 | fHijing->SetIHPR2(3, fTrigger); | |
119 | fHijing->SetIHPR2(6, fShadowing); | |
120 | fHijing->SetIHPR2(12, fDecaysOff); | |
121 | fHijing->SetIHPR2(21, fKeep); | |
122 | fHijing->SetHIPR1(10, fPtMinJet); | |
123 | fHijing->SetHIPR1(50, fSimpleJet); | |
124 | // | |
125 | // Quenching | |
126 | // | |
127 | // | |
128 | // fQuench = 0: no quenching | |
129 | // fQuench = 1: hijing default | |
130 | // fQuench = 2: new LHC parameters for HIPR1(11) and HIPR1(14) | |
131 | // fQuench = 3: new RHIC parameters for HIPR1(11) and HIPR1(14) | |
132 | // fQuench = 4: new LHC parameters with log(e) dependence | |
133 | // fQuench = 5: new RHIC parameters with log(e) dependence | |
134 | fHijing->SetIHPR2(50, 0); | |
135 | if (fQuench > 0) | |
136 | fHijing->SetIHPR2(4, 1); | |
137 | else | |
138 | fHijing->SetIHPR2(4, 0); | |
139 | // New LHC parameters from Xin-Nian Wang | |
140 | if (fQuench == 2) { | |
141 | fHijing->SetHIPR1(14, 1.1); | |
142 | fHijing->SetHIPR1(11, 3.7); | |
143 | } else if (fQuench == 3) { | |
144 | fHijing->SetHIPR1(14, 0.20); | |
145 | fHijing->SetHIPR1(11, 2.5); | |
146 | } else if (fQuench == 4) { | |
147 | fHijing->SetIHPR2(50, 1); | |
148 | fHijing->SetHIPR1(14, 4.*0.34); | |
149 | fHijing->SetHIPR1(11, 3.7); | |
150 | } else if (fQuench == 5) { | |
151 | fHijing->SetIHPR2(50, 1); | |
152 | fHijing->SetHIPR1(14, 0.34); | |
153 | fHijing->SetHIPR1(11, 2.5); | |
154 | } | |
155 | ||
f82795ff | 156 | // |
157 | // Heavy quarks | |
158 | // | |
159 | if (fNoHeavyQuarks) { | |
160 | fHijing->SetIHPR2(49, 1); | |
161 | } else { | |
162 | fHijing->SetIHPR2(49, 0); | |
163 | } | |
164 | ||
36b81802 | 165 | |
cc463e4a | 166 | AliGenMC::Init(); |
36b81802 | 167 | |
168 | // | |
169 | // Initialize Hijing | |
170 | // | |
171 | fHijing->Initialize(); | |
172 | // | |
173 | if (fEvaluate) EvaluateCrossSections(); | |
174 | // | |
175 | } | |
176 | ||
177 | void AliGenHijing::Generate() | |
178 | { | |
179 | // Generate one event | |
180 | ||
181 | Float_t polar[3] = {0,0,0}; | |
182 | Float_t origin[3] = {0,0,0}; | |
183 | Float_t origin0[3] = {0,0,0}; | |
0c0c6204 | 184 | Float_t p[3]; |
36b81802 | 185 | Float_t tof; |
186 | ||
187 | // converts from mm/c to s | |
188 | const Float_t kconv = 0.001/2.999792458e8; | |
189 | // | |
190 | Int_t nt = 0; | |
191 | Int_t jev = 0; | |
192 | Int_t j, kf, ks, imo; | |
193 | kf = 0; | |
194 | ||
195 | ||
196 | ||
197 | fTrials = 0; | |
198 | for (j = 0;j < 3; j++) origin0[j] = fOrigin[j]; | |
199 | if(fVertexSmear == kPerEvent) { | |
0c0c6204 | 200 | Vertex(); |
201 | for (j=0; j < 3; j++) origin0[j] = fVertex[j]; | |
202 | } | |
203 | ||
b25b821e | 204 | |
205 | Float_t sign = (fRandomPz && (Rndm() < 0.5))? -1. : 1.; | |
36b81802 | 206 | while(1) |
207 | { | |
208 | // Generate one event | |
209 | // -------------------------------------------------------------------------- | |
f0c86dd6 | 210 | fProjectileSpecn = 0; |
211 | fProjectileSpecp = 0; | |
b25b821e | 212 | fTargetSpecn = 0; |
213 | fTargetSpecp = 0; | |
36b81802 | 214 | // -------------------------------------------------------------------------- |
215 | fHijing->GenerateEvent(); | |
216 | fTrials++; | |
217 | fHijing->ImportParticles(fParticles,"All"); | |
218 | if (fTrigger != kNoTrigger) { | |
219 | if (!CheckTrigger()) continue; | |
220 | } | |
71ea527c | 221 | if (fLHC) Boost(); |
36b81802 | 222 | |
223 | ||
224 | Int_t np = fParticles->GetEntriesFast(); | |
225 | printf("\n **************************************************%d\n",np); | |
226 | Int_t nc = 0; | |
227 | if (np == 0 ) continue; | |
228 | Int_t i; | |
229 | Int_t* newPos = new Int_t[np]; | |
230 | Int_t* pSelected = new Int_t[np]; | |
231 | ||
232 | for (i = 0; i < np; i++) { | |
233 | newPos[i] = i; | |
234 | pSelected[i] = 0; | |
235 | } | |
236 | ||
237 | // Get event vertex | |
238 | // | |
239 | TParticle * iparticle = (TParticle *) fParticles->At(0); | |
0c0c6204 | 240 | fVertex[0] = origin0[0]; |
241 | fVertex[1] = origin0[1]; | |
242 | fVertex[2] = origin0[2]; | |
36b81802 | 243 | |
244 | // | |
245 | // First select parent particles | |
246 | // | |
247 | ||
248 | for (i = 0; i < np; i++) { | |
249 | iparticle = (TParticle *) fParticles->At(i); | |
250 | ||
251 | // Is this a parent particle ? | |
252 | if (Stable(iparticle)) continue; | |
253 | // | |
254 | Bool_t selected = kTRUE; | |
255 | Bool_t hasSelectedDaughters = kFALSE; | |
256 | ||
257 | ||
258 | kf = iparticle->GetPdgCode(); | |
259 | ks = iparticle->GetStatusCode(); | |
260 | if (kf == 92) continue; | |
261 | ||
262 | if (!fSelectAll) selected = KinematicSelection(iparticle, 0) && | |
263 | SelectFlavor(kf); | |
264 | hasSelectedDaughters = DaughtersSelection(iparticle); | |
265 | // | |
266 | // Put particle on the stack if it is either selected or | |
267 | // it is the mother of at least one seleted particle | |
268 | // | |
269 | if (selected || hasSelectedDaughters) { | |
270 | nc++; | |
271 | pSelected[i] = 1; | |
272 | } // selected | |
273 | } // particle loop parents | |
274 | // | |
275 | // Now select the final state particles | |
276 | // | |
277 | ||
278 | for (i = 0; i<np; i++) { | |
279 | TParticle * iparticle = (TParticle *) fParticles->At(i); | |
280 | // Is this a final state particle ? | |
281 | if (!Stable(iparticle)) continue; | |
282 | ||
283 | Bool_t selected = kTRUE; | |
284 | kf = iparticle->GetPdgCode(); | |
285 | ks = iparticle->GetStatusCode(); | |
286 | ||
287 | // -------------------------------------------------------------------------- | |
288 | // Count spectator neutrons and protons | |
f0c86dd6 | 289 | if(ks == 0 || ks == 1){ |
290 | if(kf == kNeutron) fProjectileSpecn += 1; | |
291 | if(kf == kProton) fProjectileSpecp += 1; | |
292 | } | |
293 | else if(ks == 10 || ks == 11){ | |
294 | if(kf == kNeutron) fTargetSpecn += 1; | |
295 | if(kf == kProton) fTargetSpecp += 1; | |
36b81802 | 296 | } |
297 | // -------------------------------------------------------------------------- | |
298 | // | |
299 | if (!fSelectAll) { | |
300 | selected = KinematicSelection(iparticle,0)&&SelectFlavor(kf); | |
301 | if (!fSpectators && selected) selected = (ks != 0 && ks != 1 && ks != 10 | |
302 | && ks != 11); | |
303 | } | |
304 | // | |
305 | // Put particle on the stack if selected | |
306 | // | |
307 | if (selected) { | |
308 | nc++; | |
309 | pSelected[i] = 1; | |
310 | } // selected | |
311 | } // particle loop final state | |
312 | // | |
313 | // Write particles to stack | |
314 | // | |
315 | for (i = 0; i<np; i++) { | |
316 | TParticle * iparticle = (TParticle *) fParticles->At(i); | |
317 | Bool_t hasMother = (iparticle->GetFirstMother() >=0); | |
318 | Bool_t hasDaughter = (iparticle->GetFirstDaughter() >=0); | |
36b81802 | 319 | if (pSelected[i]) { |
320 | kf = iparticle->GetPdgCode(); | |
321 | ks = iparticle->GetStatusCode(); | |
322 | p[0] = iparticle->Px(); | |
323 | p[1] = iparticle->Py(); | |
b25b821e | 324 | p[2] = iparticle->Pz() * sign; |
36b81802 | 325 | origin[0] = origin0[0]+iparticle->Vx()/10; |
326 | origin[1] = origin0[1]+iparticle->Vy()/10; | |
327 | origin[2] = origin0[2]+iparticle->Vz()/10; | |
328 | tof = kconv*iparticle->T(); | |
329 | imo = -1; | |
330 | TParticle* mother = 0; | |
331 | if (hasMother) { | |
332 | imo = iparticle->GetFirstMother(); | |
333 | mother = (TParticle *) fParticles->At(imo); | |
e57522c0 | 334 | imo = (mother->GetPdgCode() != 92) ? newPos[imo] : -1; |
36b81802 | 335 | } // if has mother |
336 | Bool_t tFlag = (fTrackIt && !hasDaughter); | |
642f15cf | 337 | PushTrack(tFlag,imo,kf,p,origin,polar, |
36b81802 | 338 | tof,kPNoProcess,nt, 1., ks); |
cf57b268 | 339 | |
340 | ||
36b81802 | 341 | KeepTrack(nt); |
342 | newPos[i] = nt; | |
343 | } // if selected | |
344 | } // particle loop | |
345 | delete[] newPos; | |
346 | delete[] pSelected; | |
347 | ||
348 | printf("\n I've put %i particles on the stack \n",nc); | |
349 | if (nc > 0) { | |
350 | jev += nc; | |
351 | if (jev >= fNpart || fNpart == -1) { | |
352 | fKineBias = Float_t(fNpart)/Float_t(fTrials); | |
353 | printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev); | |
354 | break; | |
355 | } | |
356 | } | |
357 | } // event loop | |
358 | MakeHeader(); | |
359 | SetHighWaterMark(nt); | |
360 | } | |
361 | ||
362 | void AliGenHijing::KeepFullEvent() | |
363 | { | |
364 | fKeep=1; | |
365 | } | |
366 | ||
367 | void AliGenHijing::EvaluateCrossSections() | |
368 | { | |
369 | // Glauber Calculation of geometrical x-section | |
370 | // | |
371 | Float_t xTot = 0.; // barn | |
372 | Float_t xTotHard = 0.; // barn | |
373 | Float_t xPart = 0.; // barn | |
374 | Float_t xPartHard = 0.; // barn | |
375 | Float_t sigmaHard = 0.1; // mbarn | |
376 | Float_t bMin = 0.; | |
377 | Float_t bMax = fHijing->GetHIPR1(34)+fHijing->GetHIPR1(35); | |
378 | const Float_t kdib = 0.2; | |
379 | Int_t kMax = Int_t((bMax-bMin)/kdib)+1; | |
380 | ||
381 | ||
382 | printf("\n Projectile Radius (fm): %f \n",fHijing->GetHIPR1(34)); | |
383 | printf("\n Target Radius (fm): %f \n",fHijing->GetHIPR1(35)); | |
384 | Int_t i; | |
385 | Float_t oldvalue= 0.; | |
386 | ||
387 | Float_t* b = new Float_t[kMax]; | |
388 | Float_t* si1 = new Float_t[kMax]; | |
389 | Float_t* si2 = new Float_t[kMax]; | |
390 | ||
391 | for (i = 0; i < kMax; i++) | |
392 | { | |
393 | Float_t xb = bMin+i*kdib; | |
394 | Float_t ov; | |
395 | ov=fHijing->Profile(xb); | |
396 | Float_t gb = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*(1.-TMath::Exp(-fHijing->GetHINT1(12)*ov)); | |
397 | Float_t gbh = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*sigmaHard*ov; | |
398 | xTot+=gb; | |
399 | xTotHard += gbh; | |
400 | printf("profile %f %f %f\n", xb, ov, fHijing->GetHINT1(12)); | |
401 | ||
402 | if (xb > fMinImpactParam && xb < fMaxImpactParam) | |
403 | { | |
404 | xPart += gb; | |
405 | xPartHard += gbh; | |
406 | } | |
407 | ||
408 | if(oldvalue) if ((xTot-oldvalue)/oldvalue<0.0001) break; | |
409 | oldvalue = xTot; | |
410 | printf("\n Total cross section (barn): %d %f %f \n",i, xb, xTot); | |
411 | printf("\n Hard cross section (barn): %d %f %f \n\n",i, xb, xTotHard); | |
412 | if (i>0) { | |
413 | si1[i] = gb/kdib; | |
414 | si2[i] = gbh/gb; | |
415 | b[i] = xb; | |
416 | } | |
417 | } | |
418 | ||
419 | printf("\n Total cross section (barn): %f \n",xTot); | |
420 | printf("\n Hard cross section (barn): %f \n \n",xTotHard); | |
421 | printf("\n Partial cross section (barn): %f %f \n",xPart, xPart/xTot*100.); | |
422 | printf("\n Partial hard cross section (barn): %f %f \n",xPartHard, xPartHard/xTotHard*100.); | |
423 | ||
424 | // Store result as a graph | |
425 | b[0] = 0; | |
426 | si1[0] = 0; | |
427 | si2[0]=si2[1]; | |
428 | ||
429 | fDsigmaDb = new TGraph(i, b, si1); | |
430 | fDnDb = new TGraph(i, b, si2); | |
431 | } | |
432 | ||
433 | Bool_t AliGenHijing::DaughtersSelection(TParticle* iparticle) | |
434 | { | |
435 | // | |
436 | // Looks recursively if one of the daughters has been selected | |
437 | // | |
438 | // printf("\n Consider daughters %d:",iparticle->GetPdgCode()); | |
439 | Int_t imin = -1; | |
440 | Int_t imax = -1; | |
441 | Int_t i; | |
442 | Bool_t hasDaughters = (iparticle->GetFirstDaughter() >=0); | |
443 | Bool_t selected = kFALSE; | |
444 | if (hasDaughters) { | |
445 | imin = iparticle->GetFirstDaughter(); | |
446 | imax = iparticle->GetLastDaughter(); | |
447 | for (i = imin; i <= imax; i++){ | |
448 | TParticle * jparticle = (TParticle *) fParticles->At(i); | |
449 | Int_t ip = jparticle->GetPdgCode(); | |
450 | if (KinematicSelection(jparticle,0)&&SelectFlavor(ip)) { | |
451 | selected=kTRUE; break; | |
452 | } | |
453 | if (DaughtersSelection(jparticle)) {selected=kTRUE; break; } | |
454 | } | |
455 | } else { | |
456 | return kFALSE; | |
457 | } | |
458 | return selected; | |
459 | } | |
460 | ||
461 | ||
462 | Bool_t AliGenHijing::SelectFlavor(Int_t pid) | |
463 | { | |
464 | // Select flavor of particle | |
465 | // 0: all | |
466 | // 4: charm and beauty | |
467 | // 5: beauty | |
468 | Bool_t res = 0; | |
469 | ||
470 | if (fFlavor == 0) { | |
471 | res = kTRUE; | |
472 | } else { | |
473 | Int_t ifl = TMath::Abs(pid/100); | |
474 | if (ifl > 10) ifl/=10; | |
475 | res = (fFlavor == ifl); | |
476 | } | |
477 | // | |
478 | // This part if gamma writing is inhibited | |
479 | if (fNoGammas) | |
480 | res = res && (pid != kGamma && pid != kPi0); | |
481 | // | |
482 | return res; | |
483 | } | |
484 | ||
14cae7e9 | 485 | Bool_t AliGenHijing::Stable(TParticle* particle) const |
36b81802 | 486 | { |
487 | // Return true for a stable particle | |
488 | // | |
489 | ||
490 | if (particle->GetFirstDaughter() < 0 ) | |
491 | { | |
492 | return kTRUE; | |
493 | } else { | |
494 | return kFALSE; | |
495 | } | |
496 | } | |
497 | ||
498 | ||
36b81802 | 499 | |
500 | void AliGenHijing::MakeHeader() | |
501 | { | |
502 | // Builds the event header, to be called after each event | |
503 | AliGenEventHeader* header = new AliGenHijingEventHeader("Hijing"); | |
504 | ((AliGenHijingEventHeader*) header)->SetNProduced(fHijing->GetNATT()); | |
505 | ((AliGenHijingEventHeader*) header)->SetImpactParameter(fHijing->GetHINT1(19)); | |
506 | ((AliGenHijingEventHeader*) header)->SetTotalEnergy(fHijing->GetEATT()); | |
507 | ((AliGenHijingEventHeader*) header)->SetHardScatters(fHijing->GetJATT()); | |
508 | ((AliGenHijingEventHeader*) header)->SetParticipants(fHijing->GetNP(), fHijing->GetNT()); | |
509 | ((AliGenHijingEventHeader*) header)->SetCollisions(fHijing->GetN0(), | |
510 | fHijing->GetN01(), | |
511 | fHijing->GetN10(), | |
512 | fHijing->GetN11()); | |
f0c86dd6 | 513 | ((AliGenHijingEventHeader*) header)->SetSpectators(fProjectileSpecn, fProjectileSpecp, |
514 | fTargetSpecn,fTargetSpecp); | |
3c0c211c | 515 | ((AliGenHijingEventHeader*) header)->SetReactionPlaneAngle(fHijing->GetHINT1(20)); |
516 | ||
517 | ||
36b81802 | 518 | |
519 | // 4-momentum vectors of the triggered jets. | |
520 | // | |
521 | // Before final state gluon radiation. | |
522 | TLorentzVector* jet1 = new TLorentzVector(fHijing->GetHINT1(21), | |
523 | fHijing->GetHINT1(22), | |
524 | fHijing->GetHINT1(23), | |
525 | fHijing->GetHINT1(24)); | |
526 | ||
527 | TLorentzVector* jet2 = new TLorentzVector(fHijing->GetHINT1(31), | |
528 | fHijing->GetHINT1(32), | |
529 | fHijing->GetHINT1(33), | |
530 | fHijing->GetHINT1(34)); | |
531 | // After final state gluon radiation. | |
532 | TLorentzVector* jet3 = new TLorentzVector(fHijing->GetHINT1(26), | |
533 | fHijing->GetHINT1(27), | |
534 | fHijing->GetHINT1(28), | |
535 | fHijing->GetHINT1(29)); | |
536 | ||
537 | TLorentzVector* jet4 = new TLorentzVector(fHijing->GetHINT1(36), | |
538 | fHijing->GetHINT1(37), | |
539 | fHijing->GetHINT1(38), | |
540 | fHijing->GetHINT1(39)); | |
541 | ((AliGenHijingEventHeader*) header)->SetJets(jet1, jet2, jet3, jet4); | |
542 | // Bookkeeping for kinematic bias | |
543 | ((AliGenHijingEventHeader*) header)->SetTrials(fTrials); | |
544 | // Event Vertex | |
0c0c6204 | 545 | header->SetPrimaryVertex(fVertex); |
cf57b268 | 546 | AddHeader(header); |
36b81802 | 547 | fCollisionGeometry = (AliGenHijingEventHeader*) header; |
548 | } | |
549 | ||
cf57b268 | 550 | void AliGenHijing::AddHeader(AliGenEventHeader* header) |
551 | { | |
552 | // Passes header either to the container or to gAlice | |
553 | if (fContainer) { | |
554 | fContainer->AddHeader(header); | |
555 | } else { | |
556 | gAlice->SetGenEventHeader(header); | |
557 | } | |
558 | } | |
559 | ||
560 | ||
36b81802 | 561 | Bool_t AliGenHijing::CheckTrigger() |
562 | { | |
563 | // Check the kinematic trigger condition | |
564 | // | |
565 | Bool_t triggered = kFALSE; | |
566 | ||
567 | if (fTrigger == 1) { | |
568 | // | |
569 | // jet-jet Trigger | |
570 | ||
571 | TLorentzVector* jet1 = new TLorentzVector(fHijing->GetHINT1(26), | |
572 | fHijing->GetHINT1(27), | |
573 | fHijing->GetHINT1(28), | |
574 | fHijing->GetHINT1(29)); | |
575 | ||
576 | TLorentzVector* jet2 = new TLorentzVector(fHijing->GetHINT1(36), | |
577 | fHijing->GetHINT1(37), | |
578 | fHijing->GetHINT1(38), | |
579 | fHijing->GetHINT1(39)); | |
580 | Double_t eta1 = jet1->Eta(); | |
581 | Double_t eta2 = jet2->Eta(); | |
582 | Double_t phi1 = jet1->Phi(); | |
583 | Double_t phi2 = jet2->Phi(); | |
584 | // printf("\n Trigger: %f %f %f %f", | |
585 | // fEtaMinJet, fEtaMaxJet, fPhiMinJet, fPhiMaxJet); | |
586 | if ( | |
587 | (eta1 < fEtaMaxJet && eta1 > fEtaMinJet && | |
588 | phi1 < fPhiMaxJet && phi1 > fPhiMinJet) | |
589 | || | |
590 | (eta2 < fEtaMaxJet && eta2 > fEtaMinJet && | |
591 | phi2 < fPhiMaxJet && phi2 > fPhiMinJet) | |
592 | ) | |
593 | triggered = kTRUE; | |
594 | } else if (fTrigger == 2) { | |
595 | // Gamma Jet | |
596 | // | |
597 | Int_t np = fParticles->GetEntriesFast(); | |
598 | for (Int_t i = 0; i < np; i++) { | |
599 | TParticle* part = (TParticle*) fParticles->At(i); | |
600 | Int_t kf = part->GetPdgCode(); | |
601 | Int_t ks = part->GetStatusCode(); | |
602 | if (kf == 22 && ks == 40) { | |
603 | Float_t phi = part->Phi(); | |
604 | Float_t eta = part->Eta(); | |
605 | if (eta < fEtaMaxJet && | |
606 | eta > fEtaMinJet && | |
607 | phi < fPhiMaxJet && | |
608 | phi > fPhiMinJet) { | |
609 | triggered = 1; | |
610 | break; | |
611 | } // check phi,eta within limits | |
612 | } // direct gamma ? | |
613 | } // particle loop | |
614 | } // fTrigger == 2 | |
615 | return triggered; | |
616 | } | |
617 | ||
618 | ||
39192f05 | 619 | void AliGenHijing::Copy(TObject &) const |
9c63d20a | 620 | { |
621 | Fatal("Copy","Not implemented!\n"); | |
622 | } | |
36b81802 | 623 | |
624 | AliGenHijing& AliGenHijing::operator=(const AliGenHijing& rhs) | |
625 | { | |
9c63d20a | 626 | rhs.Copy(*this); |
627 | return (*this); | |
36b81802 | 628 | } |
629 |