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[u/mrichter/AliRoot.git] / THbtp / AliGenHBTprocessor.cxx
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36b81802 1/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
2 * See cxx source for full Copyright notice */
3// Implementation of the interface for THBTprocessor
4// Author: Piotr Krzysztof Skowronski <Piotr.Skowronski@cern.ch>
5//////////////////////////////////////////////////////////////////////////////////
6//Wrapper class for "hbt processor" after burner
7//The origibal code is written in fortran by Lanny Ray
8//and is put in the directory $ALICE_ROOT/HBTprocessor
9//Detailed description is on the top of the file hbt_event_processor.f
10//
11//This class can be used ONLY with AliGenCocktailAfterBurner wrapper generator
12//i.e. (in Config.C)
13// ....
14// AliGenCocktailAfterBurner = gener = new AliGenCocktailAfterBurner();
15// gener->SetPhiRange(0, 360); //Set global parameters
16// gener->SetThetaRange(35., 145.);
17// AliGenHIJINGpara *hijing = new AliGenHIJINGpara(10000); //Add some generator
18// hijing->SetMomentumRange(0, 999);
19// gener->AddGenerator(hijing,"HIJING PARAMETRIZATION",1);
20//
21// AliGenHBTprocessor *hbtp = new AliGenHBTprocessor(); //create object
22// hbtp->SetRefControl(2); //set parameters
23// hbtp->SetSwitch1D(1);
24// hbtp->SetR0(6);//fm - radius
25// hbtp->SetLambda(0.7);//chaocity parameter
26// gener->AddAfterBurner(hbtp,"HBT PROCESSOR",1); //add to the main generator
27//
28// gener->Init();
29//
30//CAUTIONS:
31// A) HBT PROCESSOR NEEDS MORE THAN ONE EVENT TO WORK
32// AS MORE AS IT BETTER WORKS
33// B) IT IS ABLE TO "ADD" CORRELATIONS ONLY UP TO TWO PARTICLE TYPES AT ONES
88cb7938 34//
35//
36// Artificial particle dennsity enhancment feature
37// HBT Processor is unable to process correctly low multiplicity particles
38// even if the high statistics (more events) is supplied.
39// For that reason was implemented artificial multiplicity enhancement
40// - see also comments in HBT Processor source file (HBTP/hbt_event_processor.f)
41// or web page (http://alisoft.cern.ch/people/skowron/hbtprocessor/hbteventprocessor.html)
42// concerning trk_accep or SetTrackRejectionFactor method in this class
43// Fortran is cheated by masking several events a single one. Number is defined by fEventMerge
44// variable. In case it is equal to 1, there is no masking and the feature is off.
45// But, for example if it is 5, and we have 100 events, number of events passed to fortran is 100/5=20
46// When fortran asks about multiplcity of event, let sey, 1 - multiplicity of events 5 to 9 is summed up
47// and returned.
48//
49//
36b81802 50//////////////////////////////////////////////////////////////////////////////////
51
52// 11.11.2001 Piotr Skowronski
53// Setting seed (date) in RNG in the constructor
54
55// 09.10.2001 Piotr Skowronski
56//
57// Theta - Eta cohernecy facilities added:
58// AliGenerator::SetThetaRange method overriden
59// Static methods added
60// EtaToTheta
61// ThetaToEta
62// DegreesToRadians
63// RadiansToDegrees
64//
65// Class description comments put on proper place
66
67// 27.09.2001 Piotr Skowronski
68// removing of redefinition of defaults velues
69// in method's implementation.
70//
71//
72
73#include "AliGenHBTprocessor.h"
88cb7938 74
75#include <string.h>
76
77#include <TROOT.h>
78#include <TError.h>
36b81802 79#include <TFile.h>
80#include <TTree.h>
88cb7938 81#include <TParticle.h>
82#include "THBTprocessor.h"
83
36b81802 84#include "AliRun.h"
85#include "AliStack.h"
36b81802 86#include "AliGenCocktailAfterBurner.h"
87
88
89
90ClassImp(AliGenHBTprocessor)
91
88cb7938 92Int_t AliGenHBTprocessor::fgDebug = 0;
7cdba479 93static TRandom* sRandom;
36b81802 94
95AliGenCocktailAfterBurner* GetGenerator();
96/*******************************************************************/
88cb7938 97AliGenHBTprocessor::AliGenHBTprocessor(const AliGenHBTprocessor& in):
98 fEventMerge(1)
36b81802 99{
100//copy contructor
101 // AliGenHBTprocessor::AliGenHBTprocessor();
102}
103
88cb7938 104AliGenHBTprocessor::AliGenHBTprocessor() : AliGenerator(), fEventMerge(1)
36b81802 105{
106 //
107 // Standard constructor
108 // Sets default veues of all parameters
109 fHbtPStatCodes = 0x0;
110 fHBTprocessor = 0x0;
111
112 SetName("AliGenHBTprocessor");
113 SetTitle("AliGenHBTprocessor");
114
115 sRandom = fRandom;
116 fHBTprocessor = new THBTprocessor();
117
118 fNPDGCodes = 0;
119 DefineParticles();
120
121 SetTrackRejectionFactor();
122 SetRefControl();
123 SetPIDs();
124 SetNPIDtypes();
125 SetDeltap();
126 SetMaxIterations();
127 SetDelChi();
128 SetIRand();
129 SetLambda();
130 SetR1d() ;
131 SetRSide();
132 SetROut() ;
133 SetRLong() ;
134 SetRPerp();
135 SetRParallel();
136 SetR0();
137 SetQ0();
138 SetSwitch1D();
139 SetSwitch3D();
140 SetSwitchType();
141 SetSwitchCoherence();
142 SetSwitchCoulomb();
143 SetSwitchFermiBose();
144 //SetMomentumRange();
145 SetPtRange();
146 SetPxRange();
147 SetPyRange();
148 SetPzRange();
149 SetPhiRange();
150 SetEtaRange();
151 SetNPtBins();
152 SetNPhiBins();
153 SetNEtaBins();
154 SetNPxBins();
155 SetNPyBins();
156 SetNPzBins();
157 SetNBins1DFineMesh();
158 SetBinSize1DFineMesh();
159 SetNBins1DCoarseMesh();
160 SetBinSize1DCoarseMesh();
161 SetNBins3DFineMesh();
162 SetBinSize3DFineMesh();
163 SetNBins3DCoarseMesh();
164 SetBinSize3DCoarseMesh();
165 SetNBins3DFineProjectMesh();
166}
167
168/*******************************************************************/
169
170
171/*******************************************************************/
172
173AliGenHBTprocessor::~AliGenHBTprocessor()
174{
175//destructor
176 CleanStatusCodes();
177 if (fHBTprocessor) delete fHBTprocessor; //delete generator
178
179}
180
181/*******************************************************************/
182
183void AliGenHBTprocessor::InitStatusCodes()
184{
185 //creates and inits status codes array to zero
186 AliGenCocktailAfterBurner *cab = GetGenerator();
187
188 if(!cab) Fatal("InitStatusCodes()","Can not find AliGenCocktailAfterBurner generator");
189
190 Int_t nev = cab->GetNumberOfEvents();
191
192 fHbtPStatCodes = new Int_t* [nev];
193 for( Int_t i =0; i<nev;i++)
194 {
195 Int_t nprim = cab->GetStack(i)->GetNprimary();
196 fHbtPStatCodes[i] = new Int_t[nprim];
197 for (Int_t k =0 ;k<nprim;k++)
198 fHbtPStatCodes[i][k] =0;
199
200 }
201
202}
203/*******************************************************************/
204
205void AliGenHBTprocessor::CleanStatusCodes()
206{
207 //Cleans up status codes
208 if (fHbtPStatCodes)
209 {
210 for (Int_t i =0; i<GetGenerator()->GetNumberOfEvents(); i++)
211 delete [] fHbtPStatCodes[i];
212 delete fHbtPStatCodes;
213 fHbtPStatCodes = 0;
214 }
215
216}
217/*******************************************************************/
218
219void AliGenHBTprocessor::Init()
220 {
221 //sets up parameters in generator
222
223 THBTprocessor *thbtp = fHBTprocessor;
224
225
226 thbtp->SetTrackRejectionFactor(fTrackRejectionFactor);
227 thbtp->SetRefControl(fReferenceControl);
228
229 if ((fPid[0] == fPid[1]) || (fPid[0] == 0) || (fPid[1] == 0))
230 {
231 if (fPid[0] == 0)
232 thbtp->SetPIDs(IdFromPDG(fPid[1]) ,0);
233 else
234 thbtp->SetPIDs(IdFromPDG(fPid[0]) ,0);
235 thbtp->SetNPIDtypes(1);
236
237 if (fSwitchType !=1)
238 Warning("AliGenHBTprocessor::Init","\nThere is only one particle type set,\n\
239 and Switch_Type differnt then 1,\n which does not make sense.\n\
240 Setting it to 1.\n");
241
242 SetSwitchType(1);
243 }
244 else
245 {
246 thbtp->SetPIDs(IdFromPDG(fPid[0]) ,IdFromPDG(fPid[1]));
247 SetNPIDtypes(2);
248 thbtp->SetSwitchType(fSwitchType);
249 }
250
251 thbtp->SetMaxIterations(fMaxit);
252 thbtp->SetDelChi(fDelchi);
253 thbtp->SetIRand(fIrand);
254 thbtp->SetLambda(fLambda);
255 thbtp->SetR1d(fR1d);
256 thbtp->SetRSide(fRside);
257 thbtp->SetROut(fRout);
258 thbtp->SetRLong(fRlong);
259 thbtp->SetRPerp(fRperp);
260 thbtp->SetRParallel(fRparallel);
261 thbtp->SetR0(fR0);
262 thbtp->SetQ0(fQ0);
263 thbtp->SetSwitch1D(fSwitch1d);
264 thbtp->SetSwitch3D(fSwitch3d);
265 thbtp->SetSwitchType(fSwitchType);
266 thbtp->SetSwitchCoherence(fSwitchCoherence);
267 thbtp->SetSwitchCoulomb(fSwitchCoulomb);
268 thbtp->SetSwitchFermiBose(fSwitchFermiBose);
269 thbtp->SetPtRange(fPtMin,fPtMax);
270 thbtp->SetPxRange(fPxMin,fPxMax);
271 thbtp->SetPyRange(fPyMin,fPyMax);
272 thbtp->SetPzRange(fPzMin,fPzMax);
88cb7938 273 thbtp->SetPhiRange(fPhiMin*180./((Float_t)TMath::Pi())+180.0, //casting is because if fPhiMin = 180.0 then
274 fPhiMax*180./((Float_t)TMath::Pi())+180.0);//TMath::Pi() != TMath::Pi()*fPhiMin/180.0,
36b81802 275 thbtp->SetEtaRange(fEtaMin,fEtaMax);
276 thbtp->SetNPtBins(fNPtBins);
277 thbtp->SetNPhiBins(fNPhiBins);
278 thbtp->SetNEtaBins(fNEtaBins);
279 thbtp->SetNPxBins(fNPxBins);
280 thbtp->SetNPyBins(fNPyBins);
281 thbtp->SetNPzBins(fNPzBins);
282 thbtp->SetNBins1DFineMesh(fN1dFine);
283 thbtp->SetBinSize1DFineMesh(fBinsize1dFine);
284 thbtp->SetNBins1DCoarseMesh(fN1dCoarse);
285 thbtp->SetBinSize1DCoarseMesh(fBinsize1dCoarse);
286 thbtp->SetNBins3DFineMesh(fN3dFine);
287 thbtp->SetBinSize3DFineMesh(fBinsize3dFine);
288 thbtp->SetNBins3DCoarseMesh(fN3dCoarse);
289 thbtp->SetBinSize3DCoarseMesh(fBinsize3dCoarse);
290 thbtp->SetNBins3DFineProjectMesh(fN3dFineProject);
88cb7938 291
292 thbtp->SetPrintFull(fPrintFull);
36b81802 293
294 }
295/*******************************************************************/
296
297void AliGenHBTprocessor::Generate()
298 {
299 //starts processig
300 AliGenCocktailAfterBurner* cab = GetGenerator();
301 if (cab == 0x0)
302 {
303 Fatal("Generate()","AliGenHBTprocessor needs AliGenCocktailAfterBurner to be main generator");
304 }
305 if (cab->GetNumberOfEvents() <2)
306 {
307 Fatal("Generate()",
308 "HBT Processor needs more than 1 event to work properly,\
309 but there is only %d set", cab->GetNumberOfEvents());
310 }
311
312
313 fHBTprocessor->Initialize(); //reset all fields of common blocks
314 //in case there are many HBT processors
315 //run one after one (i.e. in AliCocktailAfterBurner)
316 //between Init() called and Generate there might
317 Init(); //be different instance running - be sure that we have our settings
318
319 InitStatusCodes(); //Init status codes
320
321 fHBTprocessor->GenerateEvent(); //Generates event
322
323 CleanStatusCodes(); //Clean Status codes - thet are not needed anymore
324 }
325
326/*******************************************************************/
327
328
329/*******************************************************************/
330void AliGenHBTprocessor::GetParticles(TClonesArray * particles) const
331 {
332 //practically dumm
333 if (!particles)
334 {
88cb7938 335 Error("GetParticles","Particles has to be initialized");
36b81802 336 return;
337 }
338 fHBTprocessor->ImportParticles(particles);
339 }
340
341/*******************************************************************/
342
343Int_t AliGenHBTprocessor::GetHbtPStatusCode(Int_t part) const
344{
345//returns the status code of the given particle in the active event
346//see SetActiveEvent in the bottom of AliGenHBTprocessor.cxx
347//and in AliCocktailAfterBurner
88cb7938 348 Int_t ev, idx;
349 GetTrackEventIndex(part,ev,idx);
350 if ( (ev<0) || (idx<0) )
351 {
352 Error("GetHbtPStatusCode","GetTrackEventIndex returned error");
353 return 0;
354 }
355 else return fHbtPStatCodes[ev][idx];
356
357 return 0;
36b81802 358}
359
360/*******************************************************************/
361void AliGenHBTprocessor::SetHbtPStatusCode(Int_t hbtstatcode, Int_t part)
362{
363 //Sets the given status code to given particle number (part) in the active event
88cb7938 364 Int_t ev, idx;
365 GetTrackEventIndex(part,ev,idx);
366 if ( (ev<0) || (idx<0) )
367 {
368 Error("GetHbtPStatusCode","GetTrackEventIndex returned error");
369 return;
370 }
371 else fHbtPStatCodes[ev][idx] = hbtstatcode;
36b81802 372}
373
374/*******************************************************************/
375
376void AliGenHBTprocessor::SetTrackRejectionFactor(Float_t trf) //def 1.0
377 {
378 //Sets the Track Rejection Factor
379 //variates in range 0.0 <-> 1.0
380 //Describes the factor of particles rejected from the output.
381 //Used only in case of low muliplicity particles e.g. lambdas.
382 //Processor generates addisional particles and builds the
383 //correletions on such a statistics.
384 //At the end these particels are left in the event according
385 //to this factor: 1==all particles are left
386 // 0==all are removed
387
388 fTrackRejectionFactor=trf;
389 fHBTprocessor->SetTrackRejectionFactor(trf);
390 }
391/*******************************************************************/
392
393void AliGenHBTprocessor::SetRefControl(Int_t rc) //default 2
394 {
395 //Sets the Refernce Control Switch
396 //switch wether read reference histograms from file =1
397 // compute from input events =2 - default
398 fReferenceControl=rc;
399 fHBTprocessor->SetRefControl(rc);
400 }
401/*******************************************************************/
402
403void AliGenHBTprocessor::SetPIDs(Int_t pid1,Int_t pid2)
404 {
405 //default pi+ pi-
406 //Sets PDG Codes of particles to be processed, default \\Pi^{+} and \\Pi^{-}
407 //This method accepts PDG codes which is
408 //in opposite to THBBProcessor which accepts GEANT PID
409 if ( (pid1 == 0) && (pid2 == 0) )
410 {
411 Error("AliGenHBTprocessor::SetPIDs","Sensless Particle Types setting: 0 0, Ignoring\n");
412 }
413
414 fPid[0]=pid1;
415 fPid[1]=pid2;
416
417 if(pid1 == pid2)
418 {
419 fHBTprocessor->SetPIDs(IdFromPDG(pid1) ,0);
420 SetNPIDtypes(1);
421 SetSwitchType(1);
422 }
423 else
424 {
425 fHBTprocessor->SetPIDs(IdFromPDG(pid1) ,IdFromPDG(pid2));
426 SetNPIDtypes(2);
427 }
428 }
429/*******************************************************************/
430
431void AliGenHBTprocessor::SetNPIDtypes(Int_t npidt)
432 {
433 //Number ofparticle types to be processed - default 2
434 //see AliGenHBTprocessor::SetPIDs
435
436 fNPidTypes = npidt;
437 fHBTprocessor->SetNPIDtypes(npidt);
438 }
439/*******************************************************************/
440
441void AliGenHBTprocessor::SetDeltap(Float_t deltp)
442 {
443 //default = 0.1 GeV
444 //maximum range for random momentum shifts in GeV/c;
445 //px,py,pz independent; Default = 0.1 GeV/c.
446 fDeltap=deltp;
447 fHBTprocessor->SetDeltap(deltp);
448 }
449/*******************************************************************/
450
451void AliGenHBTprocessor::SetMaxIterations(Int_t maxiter)
452 {
453 //maximum # allowed iterations thru all the
454 //tracks for each event. Default = 50.
455 //If maxit=0, then calculate the correlations
456 //for the input set of events without doing the
457 //track adjustment procedure.
458
459 fMaxit=maxiter;
460 fHBTprocessor->SetMaxIterations(maxiter);
461 }
462
463/*******************************************************************/
464void AliGenHBTprocessor::SetDelChi(Float_t dc)
465 {
466 //min % change in total chi-square for which
467 //the track adjustment iterations may stop,
468 //Default = 0.1%.
469
470 fDelchi=dc;
471 fHBTprocessor->SetDelChi(dc);
472 }
473/*******************************************************************/
474
475void AliGenHBTprocessor::SetIRand(Int_t irnd)
476 {
477 //if fact dummy - used only for compatibility
478 //we are using AliRoot built in RNG
479 //dummy in fact since we are using aliroot build-in RNG
480 //Sets renaodom number generator
481 fIrand=irnd;
482 fHBTprocessor->SetIRand(irnd);
483 }
484/*******************************************************************/
485
486void AliGenHBTprocessor::SetLambda(Float_t lam)
487 {
488 //default = 0.6
489 // Sets Chaoticity Parameter
490 fLambda = lam;
491 fHBTprocessor->SetLambda(lam);
492 }
493/*******************************************************************/
494void AliGenHBTprocessor::SetR1d(Float_t r)
495 {
496 //default 7.0
497 //Sets Spherical source model radius (fm)
498 fR1d = r;
499 fHBTprocessor->SetR1d(r);
500 }
501/*******************************************************************/
502void AliGenHBTprocessor::SetRSide(Float_t rs)
503 {
504 //default rs = 6.0
505 //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm)
506
507 fRside = rs;
508 fHBTprocessor->SetRSide(rs);
509 }
510/*******************************************************************/
511void AliGenHBTprocessor::SetROut(Float_t ro)
512 {
513 //default ro = 7.0
514 //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm)
515 fRout = ro;
516 fHBTprocessor->SetROut(ro);
517 }
518/*******************************************************************/
519void AliGenHBTprocessor::SetRLong(Float_t rl)
520 {
521 //default rl = 4.0
522 //Rside,Rout,Rlong = Non-spherical Bertsch-Pratt source model (fm)
523 fRlong = rl;
524 fHBTprocessor->SetRLong(rl);
525 }
526/*******************************************************************/
527void AliGenHBTprocessor::SetRPerp(Float_t rp)
528 {
529 //default rp = 6.0
530 //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm).
531 fRperp = rp;
532 fHBTprocessor->SetRPerp(rp);
533 }
534/*******************************************************************/
535void AliGenHBTprocessor::SetRParallel(Float_t rprl)
536 {
537 //default rprl = 4.0
538 //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm).
539 fRparallel = rprl;
540 fHBTprocessor->SetRParallel(rprl);
541 }
542/*******************************************************************/
543void AliGenHBTprocessor::SetR0(Float_t r0)
544 {
545 //default r0 = 4.0
546 //Rperp,Rparallel,R0= Non-spherical Yano-Koonin-Podgoretski source model (fm).
547 fR0 = r0;
548 fHBTprocessor->SetR0(r0);
549 }
550/*******************************************************************/
551void AliGenHBTprocessor::SetQ0(Float_t q0)
552 {
553 //default q0 = 9.0
554 //Sets Q0 = NA35 Coulomb parameter for finite source size in (GeV/c)
555 // if fSwitchCoulomb = 2
556 // = Spherical Coulomb source radius in (fm)
557 // if switchCoulomb = 3, used to interpolate the
558 // input Pratt/Cramer discrete Coulomb source
559 // radii tables.
560 fQ0 = q0;
561 fHBTprocessor->SetQ0(q0);
562 }
563
564/*******************************************************************/
565void AliGenHBTprocessor::SetSwitch1D(Int_t s1d)
566 {
567//default s1d = 3
568// Sets fSwitch1d
569// = 0 to not compute the 1D two-body //orrelations.
570// = 1 to compute this using Q-invariant
571// = 2 to compute this using Q-total
572// = 3 to compute this using Q-3-ve//tor
573
574 fSwitch1d = s1d;
575 fHBTprocessor->SetSwitch1D(s1d);
576 }
577/*******************************************************************/
578void AliGenHBTprocessor::SetSwitch3D(Int_t s3d)
579 {
580//default s3d = 0
581// Sets fSwitch3d
582// = 0 to not compute the 3D two-body correlations.
583// = 1 to compute this using the side-out-long form
584// = 2 to compute this using the Yanno-Koonin-Pogoredskij form.
585
586 fSwitch3d = s3d;
587 fHBTprocessor->SetSwitch3D(s3d);
588 }
589/*******************************************************************/
590void AliGenHBTprocessor::SetSwitchType(Int_t st)
591 {
592//default st = 3
593// Sets switch_type = 1 to fit only the like pair correlations
594// = 2 to fit only the unlike pair correlations
595// = 3 to fit both the like and unlike pair correl.
596//See SetPIDs and Init
597//If only one particle type is set, unly==1 makes sens
598
599 fSwitchType = st;
600 fHBTprocessor->SetSwitchType(st);
601 }
602/*******************************************************************/
603void AliGenHBTprocessor::SetSwitchCoherence(Int_t sc)
604 {
605// default sc = 0
606// switchCoherence = 0 for purely incoherent source (but can have
607// lambda < 1.0)
608// = 1 for mixed incoherent and coherent source
609
610 fSwitchCoherence = sc;
611 fHBTprocessor->SetSwitchCoherence(sc);
612 }
613/*******************************************************************/
614void AliGenHBTprocessor::SetSwitchCoulomb(Int_t scol)
615 {
616//default scol = 2
617// switchCoulomb = 0 no Coulomb correction
618// = 1 Point source Gamow correction only
619// = 2 NA35 finite source size correction
620// = 3 Pratt/Cramer finite source size correction;
621// interpolated from input tables.
622 fSwitchCoulomb =scol;
623 fHBTprocessor->SetSwitchCoulomb(scol);
624 }
625/*******************************************************************/
626void AliGenHBTprocessor::SetSwitchFermiBose(Int_t sfb)
627 {
628//default sfb = 1
629// switchFermiBose = 1 Boson pairs
630// = -1 Fermion pairs
631
632 fSwitchFermiBose = sfb;
633 fHBTprocessor->SetSwitchFermiBose(sfb);
634 }
635/*******************************************************************/
636void AliGenHBTprocessor::SetPtRange(Float_t ptmin, Float_t ptmax)
637 {
638// default ptmin = 0.1, ptmax = 0.98
639//Sets Pt range (GeV)
640 AliGenerator::SetPtRange(ptmin,ptmax);
641 fHBTprocessor->SetPtRange(ptmin,ptmax);
642 }
643
644/*******************************************************************/
645void AliGenHBTprocessor::SetPxRange(Float_t pxmin, Float_t pxmax)
646 {
647//default pxmin = -1.0, pxmax = 1.0
648//Sets Px range
649 fPxMin =pxmin;
650 fPxMax =pxmax;
651 fHBTprocessor->SetPxRange(pxmin,pxmax);
652 }
653/*******************************************************************/
654void AliGenHBTprocessor::SetPyRange(Float_t pymin, Float_t pymax)
655 {
656//default pymin = -1.0, pymax = 1.0
657//Sets Py range
658 fPyMin =pymin;
659 fPyMax =pymax;
660 fHBTprocessor->SetPyRange(pymin,pymax);
661 }
662/*******************************************************************/
663void AliGenHBTprocessor::SetPzRange(Float_t pzmin, Float_t pzmax)
664 {
665//default pzmin = -3.6, pzmax = 3.6
666//Sets Py range
667 fPzMin =pzmin;
668 fPzMax =pzmax;
669 fHBTprocessor->SetPzRange(pzmin,pzmax);
670 }
671void AliGenHBTprocessor::SetMomentumRange(Float_t pmin, Float_t pmax)
672 {
673 //default pmin=0, pmax=0
674 //Do not use this method!
675 MayNotUse("AliGenHBTprocessor::SetMomentumRange Method is Dummy");
676 }
677
678 /*******************************************************************/
679void AliGenHBTprocessor::SetPhiRange(Float_t phimin, Float_t phimax)
680 {
681//
682//Sets \\Phi range
683 AliGenerator::SetPhiRange(phimin,phimax);
684
88cb7938 685 fHBTprocessor->SetPhiRange(phimin+180.0,phimax+180.0);
36b81802 686 }
687/*******************************************************************/
688void AliGenHBTprocessor::SetEtaRange(Float_t etamin, Float_t etamax)
689 {
690//default etamin = -1.5, etamax = 1.5
691//Sets \\Eta range
692 fEtaMin= etamin;
693 fEtaMax =etamax;
694 fHBTprocessor->SetEtaRange(etamin,etamax);
695
696 //set the azimothal angle range in the AliGeneraor -
697 //to keep coherency between azimuthal angle and pseudorapidity
698 //DO NOT CALL this->SetThetaRange, because it calls this method (where we are)
699 //which must cause INFINITE LOOP
700 AliGenerator::SetThetaRange(RadiansToDegrees(EtaToTheta(fEtaMin)),
701 RadiansToDegrees(EtaToTheta(fEtaMax)));
702
703 }
704/*******************************************************************/
705void AliGenHBTprocessor::SetThetaRange(Float_t thetamin, Float_t thetamax)
706{
707 //default thetamin = 0, thetamax = 180
708 //Azimuthal angle, override AliGenerator method which uses widely (i.e. wrapper generators)
709 //core fortran HBTProcessor uses Eta (pseudorapidity)
710 //so these methods has to be synchronized
711
712 AliGenerator::SetThetaRange(thetamin,thetamax);
713
714 SetEtaRange( ThetaToEta(fThetaMin) , ThetaToEta(fThetaMax) );
715
716}
717
718/*******************************************************************/
719void AliGenHBTprocessor::SetNPtBins(Int_t nptbin)
720 {
721 //default nptbin = 50
722 //set number of Pt bins
723 fNPtBins= nptbin;
724 fHBTprocessor->SetNPtBins(nptbin);
725 }
726/*******************************************************************/
727void AliGenHBTprocessor::SetNPhiBins(Int_t nphibin)
728{
729 //default nphibin = 50
730 //set number of Phi bins
731 fNPhiBins=nphibin;
732 fHBTprocessor->SetNPhiBins(nphibin);
733}
734/*******************************************************************/
735void AliGenHBTprocessor::SetNEtaBins(Int_t netabin)
736{
737 //default netabin = 50
738 //set number of Eta bins
739 fNEtaBins = netabin;
740 fHBTprocessor->SetNEtaBins(netabin);
741}
742/*******************************************************************/
743void AliGenHBTprocessor::SetNPxBins(Int_t npxbin)
744{
745 //default npxbin = 20
746 //set number of Px bins
747 fNPxBins = npxbin;
748 fHBTprocessor->SetNPxBins(npxbin);
749}
750/*******************************************************************/
751void AliGenHBTprocessor::SetNPyBins(Int_t npybin)
752{
753 //default npybin = 20
754 //set number of Py bins
755 fNPyBins = npybin;
756 fHBTprocessor->SetNPyBins(npybin);
757}
758/*******************************************************************/
759void AliGenHBTprocessor::SetNPzBins(Int_t npzbin)
760{
761 //default npzbin = 70
762 //set number of Pz bins
763 fNPzBins = npzbin;
764 fHBTprocessor->SetNPzBins(npzbin);
765}
766/*******************************************************************/
767void AliGenHBTprocessor::SetNBins1DFineMesh(Int_t n)
768{
769//default n = 10
770//Sets the number of bins in the 1D mesh
771 fN1dFine =n;
772 fHBTprocessor->SetNBins1DFineMesh(n);
773
774}
775/*******************************************************************/
776void AliGenHBTprocessor::SetBinSize1DFineMesh(Float_t x)
777{
778//default x=0.01
779//Sets the bin size in the 1D mesh
780 fBinsize1dFine = x;
781 fHBTprocessor->SetBinSize1DFineMesh(x);
782}
783/*******************************************************************/
784
785void AliGenHBTprocessor::SetNBins1DCoarseMesh(Int_t n)
786{
787//default n =2
788//Sets the number of bins in the coarse 1D mesh
789 fN1dCoarse =n;
790 fHBTprocessor->SetNBins1DCoarseMesh(n);
791}
792/*******************************************************************/
793void AliGenHBTprocessor::SetBinSize1DCoarseMesh(Float_t x)
794{
795//default x=0.05
796//Sets the bin size in the coarse 1D mesh
797 fBinsize1dCoarse =x;
798 fHBTprocessor->SetBinSize1DCoarseMesh(x);
799}
800/*******************************************************************/
801
802void AliGenHBTprocessor::SetNBins3DFineMesh(Int_t n)
803{
804//default n = 8
805//Sets the number of bins in the 3D mesh
806 fN3dFine =n;
807 fHBTprocessor->SetNBins3DFineMesh(n);
808}
809/*******************************************************************/
810void AliGenHBTprocessor::SetBinSize3DFineMesh(Float_t x)
811{
812//default x=0.01
813//Sets the bin size in the 3D mesh
814 fBinsize3dFine =x;
815 fHBTprocessor->SetBinSize3DFineMesh(x);
816}
817/*******************************************************************/
818
819void AliGenHBTprocessor::SetNBins3DCoarseMesh(Int_t n)
820{
821//default n = 2
822//Sets the number of bins in the coarse 3D mesh
823
824 fN3dCoarse = n;
825 fHBTprocessor->SetNBins3DCoarseMesh(n);
826}
827/*******************************************************************/
828void AliGenHBTprocessor::SetBinSize3DCoarseMesh(Float_t x)
829{
830//default x=0.08
831//Sets the bin size in the coarse 3D mesh
832 fBinsize3dCoarse = x;
833 fHBTprocessor->SetBinSize3DCoarseMesh(x);
834}
835/*******************************************************************/
836
837void AliGenHBTprocessor::SetNBins3DFineProjectMesh(Int_t n )
838{
839//default n =3
840//Sets the number of bins in the fine project mesh
841 fN3dFineProject = n;
842 fHBTprocessor->SetNBins3DFineProjectMesh(n);
843}
844/*******************************************************************/
88cb7938 845void AliGenHBTprocessor::SetPrintFull(Int_t flag)
846{
847 fPrintFull = flag;
848 fHBTprocessor->SetPrintFull(flag);
849}
850
851
852/*******************************************************************/
853
854Int_t AliGenHBTprocessor::GetNumberOfEvents()
855{
856 AliGenerator* g = gAlice->Generator();
857 AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0;
858 if (cab == 0x0)
859 {
860 Fatal("GetNumberOfEvents","Master Generator is not an AliGenCocktailAfterBurner");
861 return 0;
862 }
863 return (Int_t)TMath::Ceil(cab->GetNumberOfEvents()/((Float_t)fEventMerge));
864}
865
866/*******************************************************************/
36b81802 867
88cb7938 868void AliGenHBTprocessor::SetActiveEventNumber(Int_t n)
869{
870 fActiveStack = n*fEventMerge;
871 if (fgDebug)
872 Info("SetActiveEventNumber","Settimg active event %d passed %d",
873 fActiveStack,n);
874}
875/*******************************************************************/
36b81802 876
88cb7938 877Int_t AliGenHBTprocessor::GetNumberOfTracks()
878{
879 AliGenerator* g = gAlice->Generator();
880 AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0;
881 if (cab == 0x0)
882 {
883 Fatal("GetNumberOfEvents","Master Generator is not an AliGenCocktailAfterBurner");
884 return 0;
885 }
886 Int_t n = 0;
887 for (Int_t i = fActiveStack;i < fActiveStack+fEventMerge; i++)
888 {
889 if (i >= GetNumberOfEvents()) break; //protection not to overshoot nb of events
890 AliStack* stack = cab->GetStack(i);
891 if (stack == 0x0)
892 Error("GetNumberOfTracks","There is no stack %d",i);
893
894 n+=stack->GetNprimary();
895 }
896 return n;
897}
898/*******************************************************************/
899
900void AliGenHBTprocessor::SetNEventsToMerge(Int_t nev)
901{
902 if (nev > 0 ) fEventMerge = nev;
903}
904/*******************************************************************/
905
906TParticle* AliGenHBTprocessor::GetTrack(Int_t n)
907{
908//returns track that hbtp thinks is n in active event
909 if (fgDebug > 5) Info("GetTrack","n = %d",n);
910 AliGenerator* g = gAlice->Generator();
911 AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0;
912 if (cab == 0x0)
913 {
914 Fatal("GetTrackEventIndex","Master Generator is not an AliGenCocktailAfterBurner");
915 return 0;
916 }
917
918 Int_t ev, idx;
919 GetTrackEventIndex(n,ev,idx);
920 if (fgDebug > 5) Info("GetTrack","Event = %d Particle = %d",ev,idx);
921 if ( (ev<0) || (idx<0) )
922 {
923 Error("GetTrack","GetTrackEventIndex returned error");
924 return 0x0;
925 }
926 else
927 {
928 if (fgDebug > 5) Info("GetTrack","Number of Tracks in Event(%d) = %d",ev,cab->GetStack(ev)->GetNprimary());
929 return cab->GetStack(ev)->Particle(idx); //safe - in case stack does not exist
930 } //GetTrackEventIndex would have returned error
931 return 0x0;
932}
36b81802 933/*******************************************************************/
934
88cb7938 935void AliGenHBTprocessor::GetTrackEventIndex(Int_t n, Int_t &evno, Int_t &index) const
936{
937 //returns event(stack) number and particle index
938 AliGenerator* g = gAlice->Generator();
939 AliGenCocktailAfterBurner* cab = (g)?dynamic_cast<AliGenCocktailAfterBurner*>(g):0x0;
940 if (cab == 0x0)
941 {
942 Fatal("GetTrackEventIndex","Master Generator is not an AliGenCocktailAfterBurner");
943 return;
944 }
945
946 evno = -1;
947 index = -1;
948 for (Int_t i = fActiveStack;i < fActiveStack+fEventMerge; i++)
949 {
950 AliStack* stack = cab->GetStack(i);
951 if (stack == 0x0)
952 {
953 Error("GetTrackEventIndex","There is no stack %d",i);
954 return;
955 }
956
957 Int_t ntracks = stack->GetNprimary();
958 if (fgDebug > 10) Info("GetTrackEventIndex","Event %d has %d tracks. n = %d",i,ntracks,n);
959
960 if ( ntracks > n)
961 {
962 evno = i;
963 index = n;
964 return ;
965 }
966 else
967 {
968 n-=ntracks;
969 continue;
970 }
971 }
972 Error("GetTrackEventIndex","Could not find given track");
973}
974
975/*******************************************************************/
976/*******************************************************************/
977/*******************************************************************/
36b81802 978
979
980
981
982
983void AliGenHBTprocessor::DefineParticles()
984{
985 //
986 // Load standard numbers for GEANT particles and PDG conversion
987 fNPDGCodes = 0; //this is done in the constructor - but in any case ...
988
989 fPDGCode[fNPDGCodes++]=-99; // 0 = unused location
990 fPDGCode[fNPDGCodes++]=22; // 1 = photon
991 fPDGCode[fNPDGCodes++]=-11; // 2 = positron
992 fPDGCode[fNPDGCodes++]=11; // 3 = electron
993 fPDGCode[fNPDGCodes++]=12; // 4 = neutrino e
994 fPDGCode[fNPDGCodes++]=-13; // 5 = muon +
995 fPDGCode[fNPDGCodes++]=13; // 6 = muon -
996 fPDGCode[fNPDGCodes++]=111; // 7 = pi0
997 fPDGCode[fNPDGCodes++]=211; // 8 = pi+
998 fPDGCode[fNPDGCodes++]=-211; // 9 = pi-
999 fPDGCode[fNPDGCodes++]=130; // 10 = Kaon Long
1000 fPDGCode[fNPDGCodes++]=321; // 11 = Kaon +
1001 fPDGCode[fNPDGCodes++]=-321; // 12 = Kaon -
1002 fPDGCode[fNPDGCodes++]=2112; // 13 = Neutron
1003 fPDGCode[fNPDGCodes++]=2212; // 14 = Proton
1004 fPDGCode[fNPDGCodes++]=-2212; // 15 = Anti Proton
1005 fPDGCode[fNPDGCodes++]=310; // 16 = Kaon Short
1006 fPDGCode[fNPDGCodes++]=221; // 17 = Eta
1007 fPDGCode[fNPDGCodes++]=3122; // 18 = Lambda
1008 fPDGCode[fNPDGCodes++]=3222; // 19 = Sigma +
1009 fPDGCode[fNPDGCodes++]=3212; // 20 = Sigma 0
1010 fPDGCode[fNPDGCodes++]=3112; // 21 = Sigma -
1011 fPDGCode[fNPDGCodes++]=3322; // 22 = Xi0
1012 fPDGCode[fNPDGCodes++]=3312; // 23 = Xi-
1013 fPDGCode[fNPDGCodes++]=3334; // 24 = Omega-
1014 fPDGCode[fNPDGCodes++]=-2112; // 25 = Anti Proton
1015 fPDGCode[fNPDGCodes++]=-3122; // 26 = Anti Proton
1016 fPDGCode[fNPDGCodes++]=-3222; // 27 = Anti Sigma -
1017 fPDGCode[fNPDGCodes++]=-3212; // 28 = Anti Sigma 0
1018 fPDGCode[fNPDGCodes++]=-3112; // 29 = Anti Sigma 0
1019 fPDGCode[fNPDGCodes++]=-3322; // 30 = Anti Xi 0
1020 fPDGCode[fNPDGCodes++]=-3312; // 31 = Anti Xi +
1021 fPDGCode[fNPDGCodes++]=-3334; // 32 = Anti Omega +
1022}
1023
1024/*******************************************************************/
1025Int_t AliGenHBTprocessor::IdFromPDG(Int_t pdg) const
1026{
1027 //
1028 // Return Geant3 code from PDG and pseudo ENDF code
1029 //
1030 for(Int_t i=0;i<fNPDGCodes;++i)
1031 if(pdg==fPDGCode[i]) return i;
1032 return -1;
1033}
1034Int_t AliGenHBTprocessor::PDGFromId(Int_t id) const
1035{
1036 //
1037 // Return PDG code and pseudo ENDF code from Geant3 code
1038 //
1039 if(id>0 && id<fNPDGCodes) return fPDGCode[id];
1040 else return -1;
1041}
1042Double_t AliGenHBTprocessor::ThetaToEta(Double_t arg)
1043 {
1044 //converts etha(azimuthal angle) to Eta (pseudorapidity). Argument in radians
88cb7938 1045
1046 if(arg>= TMath::Pi()) return 708.0;//This number is the biggest wich not crashes exp(x)
1047 if(arg<= 0.0) return -708.0;//
1048 if(arg == TMath::Pi()/2.) return 0.0;//
36b81802 1049
36b81802 1050 if (arg > 0.0)
1051 {
88cb7938 1052 return TMath::Log( TMath::Tan(arg/2.)) ;
36b81802 1053 }
1054 else
88cb7938 1055 {
1056 return -TMath::Log( TMath::Tan(-arg/2.)) ;
36b81802 1057 }
1058 }
1059
1060/*******************************************************************/
1061/****** ROUTINES USED FOR COMMUNUCATION ********/
1062/******************** WITH FORTRAN ********************/
1063/*******************************************************************/
1064
1065#ifndef WIN32
1066 # define hbtpran hbtpran_
1067 # define alihbtp_puttrack alihbtp_puttrack_
1068 # define alihbtp_gettrack alihbtp_gettrack_
1069 # define alihbtp_getnumberevents alihbtp_getnumberevents_
1070 # define alihbtp_getnumbertracks alihbtp_getnumbertracks_
1071 # define alihbtp_initialize alihbtp_initialize_
1072 # define alihbtp_setactiveeventnumber alihbtp_setactiveeventnumber_
1073 # define alihbtp_setparameters alihbtp_setparameters_
1074 # define type_ofCall
1075
1076#else
1077 # define hbtpran HBTPRAN
1078 # define alihbtp_puttrack ALIHBTP_PUTTRACK
1079 # define alihbtp_gettrack ALIHBTP_GETTRACK
1080 # define alihbtp_getnumberevents ALIHBTP_GETNUMBEREVENTS
1081 # define alihbtp_getnumbertracks ALIHBTP_GETNUMBERTRACKS
1082 # define alihbtp_initialize ALIHBTP_INITIALIZE
1083 # define alihbtp_setactiveeventnumber ALIHBTP_SETACTIVEEVENTNUMBER
1084 # define alihbtp_setparameters ALIHBTP_SETPARAMETERS
1085 # define type_ofCall _stdcall
1086#endif
1087
36b81802 1088/*******************************************************************/
1089
1090AliGenCocktailAfterBurner* GetGenerator()
1091 {
1092 // This function has two tasks:
1093 // Check if environment is OK (exist gAlice and generator)
1094 // Returns pointer to genrator
1095 //to be changed with TFolders
1096
1097 if(!gAlice)
1098 {
88cb7938 1099 ::Error("AliGenHBTprocessor.cxx: GetGenerator()",
1100 "There is NO gALICE! Check what you are doing!");
1101 ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()",
1102 "Running HBT Processor without gAlice... Exiting \n");
1103 return 0x0;//pro forma
36b81802 1104 }
1105 AliGenerator * gen = gAlice->Generator();
1106
1107 if (!gen)
1108 {
88cb7938 1109 ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()",
1110 "There is no generator in gAlice, exiting\n");
36b81802 1111 return 0x0;
1112 }
1113
1114 //we do not sure actual type of the genetator
1115 //and simple casting is risky - we use ROOT machinery to do safe cast
1116
1117 TClass* cabclass = AliGenCocktailAfterBurner::Class(); //get AliGenCocktailAfterBurner TClass
1118 TClass* genclass = gen->IsA();//get TClass of the generator we got from galice
1119 //use casting implemented in TClass
1120 //cast gen to cabclass
1121 AliGenCocktailAfterBurner* cab=(AliGenCocktailAfterBurner*)genclass->DynamicCast(cabclass,gen);
1122
1123 if (cab == 0x0)//if generator that we got is not AliGenCocktailAfterBurner or its descendant we get null
1124 { //then quit with error
88cb7938 1125 ::Fatal("AliGenHBTprocessor.cxx: GetGenerator()",
1126 "The main Generator is not a AliGenCocktailAfterBurner, exiting\n");
36b81802 1127 return 0x0;
1128 }
36b81802 1129 return cab;
36b81802 1130 }
1131/*******************************************************************/
1132
1133AliGenHBTprocessor* GetAliGenHBTprocessor()
1134{
1135//returns pointer to the current instance of AliGenHBTprocessor in
1136//AliGenCocktailAfterBurner (can be more than one)
1137//
1138 AliGenCocktailAfterBurner* gen = GetGenerator();
1139 AliGenerator* g = gen->GetCurrentGenerator();
1140 if(g == 0x0)
1141 {
88cb7938 1142 ::Fatal("AliGenHBTprocessor.cxx: GetAliGenHBTprocessor()",
36b81802 1143 "Can not get the current generator. Exiting");
88cb7938 1144 return 0x0;//pro forma
36b81802 1145 }
1146
1147 TClass* hbtpclass = AliGenHBTprocessor::Class(); //get AliGenCocktailAfterBurner TClass
1148 TClass* gclass = g->IsA();//get TClass of the current generator we got from CAB
1149 AliGenHBTprocessor* hbtp = (AliGenHBTprocessor*)gclass->DynamicCast(hbtpclass,g);//try to cast
1150 if (hbtp == 0x0)
1151 {
88cb7938 1152 ::Fatal("AliGenHBTprocessor.cxx: GetAliGenHBTprocessor()",
1153 "\nCurrernt generator in AliGenCocktailAfterBurner is not a AliGenHBTprocessor, exiting\n");
36b81802 1154 return 0x0;
1155 }
1156 return hbtp;
1157}
1158
1159/*******************************************************************/
1160extern "C" void type_ofCall alihbtp_setparameters()
1161 {
1162 //dummy
1163 }
1164
1165extern "C" void type_ofCall alihbtp_initialize()
1166 {
1167 //dummy
1168 }
1169
1170/*******************************************************************/
1171
1172extern "C" void type_ofCall alihbtp_getnumberevents(Int_t &nev)
1173 {
1174 //passes number of events to the fortran
88cb7938 1175 if(AliGenHBTprocessor::fgDebug)
1176 ::Info("AliGenHBTprocessor.cxx: alihbtp_getnumberevents","(%d) ....",nev);
1177
1178 AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function
1179 nev = gen->GetNumberOfEvents();
36b81802 1180
88cb7938 1181 if(AliGenHBTprocessor::fgDebug>5)
1182 ::Info("AliGenHBTprocessor.cxx: alihbtp_getnumberevents","EXITED N Ev = %d",nev);
36b81802 1183 }
1184
1185/*******************************************************************/
1186
1187extern "C" void type_ofCall alihbtp_setactiveeventnumber(Int_t & nev)
1188 {
1189//sets active event in generator (AliGenCocktailAfterBurner)
1190
88cb7938 1191 if(AliGenHBTprocessor::fgDebug>5)
1192 ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","(%d)",nev);
1193 if(AliGenHBTprocessor::fgDebug>0)
1194 ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","Asked for event %d",nev-1);
1195
1196 AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function
36b81802 1197
88cb7938 1198 gen->SetActiveEventNumber(nev - 1); //fortran numerates events from 1 to N
36b81802 1199
88cb7938 1200 if(AliGenHBTprocessor::fgDebug>5)
1201 ::Info("AliGenHBTpocessor.cxx: alihbtp_setactiveeventnumber","EXITED returned %d",nev);
36b81802 1202 }
1203/*******************************************************************/
1204
1205extern "C" void type_ofCall alihbtp_getnumbertracks(Int_t &ntracks)
1206 {
1207//passes number of particles in active event to the fortran
88cb7938 1208 if(AliGenHBTprocessor::fgDebug>5)
1209 ::Info("AliGenHBTpocessor.cxx: alihbtp_getnumbertracks","(%d)",ntracks);
36b81802 1210
88cb7938 1211 AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function
36b81802 1212
88cb7938 1213 ntracks = gen->GetNumberOfTracks();
1214 if(AliGenHBTprocessor::fgDebug>5)
1215 ::Info("AliGenHBTpocessor.cxx: alihbtp_getnumbertracks","EXITED Ntracks = %d",ntracks);
36b81802 1216 }
1217
1218/*******************************************************************/
1219
1220extern "C" void type_ofCall
1221 alihbtp_puttrack(Int_t & n,Int_t& flag, Float_t& px,
1222 Float_t& py, Float_t& pz, Int_t& geantpid)
1223 {
1224//sets new parameters (momenta) in track number n
1225// in the active event
1226// n - number of the track in active event
1227// flag - flag of the track
1228// px,py,pz - momenta
1229// geantpid - type of the particle - Geant Particle ID
1230
88cb7938 1231 if(AliGenHBTprocessor::fgDebug>5)
1232 ::Info("AliGenHBTpocessor.cxx: alihbtp_puttrack","(%d)",n);
36b81802 1233
88cb7938 1234 AliGenHBTprocessor* gen = GetAliGenHBTprocessor();//we dont check because it is done in function
36b81802 1235
88cb7938 1236 TParticle * track = gen->GetTrack(n-1);
1237 if (track == 0x0)
1238 {
1239 ::Error("AliGenHBTprocessor.cxx","Can not get track from AliGenHBTprocessor");
1240 return;
1241 }
36b81802 1242
1243 //check to be deleted
88cb7938 1244 if (geantpid != (gen->IdFromPDG( track->GetPdgCode() )))
36b81802 1245 {
88cb7938 1246 ::Error("AliGenHBTprocessor.cxx: alihbtp_puttrack",
1247 "SOMETHING IS GOING BAD:\n GEANTPIDS ARE NOT THE SAME");
36b81802 1248 }
1249
88cb7938 1250 if(AliGenHBTprocessor::fgDebug>0)
36b81802 1251 if (px != track->Px())
88cb7938 1252 ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack",
1253 "Px diff. = %f", px - track->Px());
36b81802 1254
88cb7938 1255 if(AliGenHBTprocessor::fgDebug>3)
1256 ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack",
1257 "track->GetPdgCode() --> %d",track->GetPdgCode());
36b81802 1258
1259
1260
1261 Float_t m = track->GetMass();
1262 Float_t e = TMath::Sqrt(m*m+px*px+py*py+pz*pz);
1263 track->SetMomentum(px,py,pz,e);
1264
88cb7938 1265 gen->SetHbtPStatusCode(flag,n-1);
36b81802 1266
88cb7938 1267 if(AliGenHBTprocessor::fgDebug>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_puttrack","EXITED ");
36b81802 1268 }
1269
1270/*******************************************************************/
1271
1272extern "C" void type_ofCall
1273 alihbtp_gettrack(Int_t & n,Int_t & flag, Float_t & px,
1274 Float_t & py, Float_t & pz, Int_t & geantpid)
1275
1276 {
1277//passes track parameters to the fortran
1278// n - number of the track in active event
1279// flag - flag of the track
1280// px,py,pz - momenta
1281// geantpid - type of the particle - Geant Particle ID
1282
88cb7938 1283 if(AliGenHBTprocessor::fgDebug>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_gettrack","(%d)",n);
36b81802 1284 AliGenHBTprocessor* g = GetAliGenHBTprocessor();
88cb7938 1285
1286 TParticle * track = g->GetTrack(n-1);
36b81802 1287
1288 flag = g->GetHbtPStatusCode(n-1);
1289
1290 px = (Float_t)track->Px();
1291 py = (Float_t)track->Py();
1292 pz = (Float_t)track->Pz();
1293
1294 geantpid = g->IdFromPDG( track->GetPdgCode() );
1295
88cb7938 1296 if(AliGenHBTprocessor::fgDebug>5) ::Info("AliGenHBTprocessor.cxx: alihbtp_gettrack","EXITED");
36b81802 1297 }
1298
1299/*******************************************************************/
1300extern "C" Float_t type_ofCall hbtpran(Int_t &)
1301{
1302//interface to the random number generator
1303 return sRandom->Rndm();
1304}
1305
1306/*******************************************************************/
1307
1308
1309/*******************************************************************/