* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.2 2003/04/04 08:14:02 morsch
-Boost() moved to AliGenMC
-
-Revision 1.1 2003/03/15 14:45:57 morsch
-Classes imported from EVGEN
-
-Revision 1.47 2003/01/14 10:50:18 alibrary
-Cleanup of STEER coding conventions
-
-Revision 1.46 2003/01/07 14:12:33 morsch
-Provides collision geometry.
-
-Revision 1.45 2002/12/16 09:44:49 morsch
-Default for fRadiation is 3.
-
-Revision 1.44 2002/10/14 14:55:35 hristov
-Merging the VirtualMC branch to the main development branch (HEAD)
-
-Revision 1.42.4.1 2002/08/28 15:06:50 alibrary
-Updating to v3-09-01
-
-Revision 1.43 2002/08/09 12:09:52 morsch
-Direct gamma trigger correctly included.
-
-Revision 1.42 2002/03/12 11:07:08 morsch
-Add status code of particle to SetTrack call.
-
-Revision 1.41 2002/03/05 11:25:33 morsch
-- New quenching options
-- Correction in CheckTrigger()
-
-Revision 1.40 2002/02/12 11:05:53 morsch
-Get daughter indices right.
-
-Revision 1.39 2002/02/12 09:16:39 morsch
-Correction in SelectFlavor()
-
-Revision 1.38 2002/02/12 08:53:21 morsch
-SetNoGammas can be used to inhibit writing of gammas and pi0.
-
-Revision 1.37 2002/02/08 16:50:50 morsch
-Add name and title in constructor.
-
-Revision 1.36 2002/01/31 20:17:55 morsch
-Allow for triggered jets with simplified topology: Exact pT, back-to-back
-
-Revision 1.35 2001/12/13 07:56:25 hristov
-Set pointers to zero in the default constructor
-
-Revision 1.34 2001/12/11 16:55:42 morsch
-Correct initialization for jet phi-range.
-
-Revision 1.33 2001/12/05 10:18:51 morsch
-Possibility of kinematic biasing of jet phi range. (J. Klay)
-
-Revision 1.32 2001/11/28 13:51:11 morsch
-Introduce kinematic biasing (etamin, etamax) of jet trigger. Bookkeeping
-(number of trials) done in AliGenHijingEventHeader.
-
-Revision 1.31 2001/11/06 12:30:34 morsch
-Add Boost() method to boost all particles to LHC lab frame. Needed for asymmetric collision systems.
-
-Revision 1.30 2001/10/21 18:35:56 hristov
-Several pointers were set to zero in the default constructors to avoid memory management problems
-
-Revision 1.29 2001/10/15 08:12:24 morsch
-- Vertex smearing with truncated gaussian.
-- Store triggered jet info before and after final state radiation into mc-heade
-
-Revision 1.28 2001/10/08 11:55:25 morsch
-Store 4-momenta of trigegred jets in event header.
-Possibility to switch of initial and final state radiation.
-
-Revision 1.27 2001/10/08 07:13:14 morsch
-Add setter for minimum transverse momentum of triggered jet.
-
-Revision 1.26 2001/10/04 08:12:24 morsch
-Redefinition of stable condition.
-
-Revision 1.25 2001/07/27 17:09:36 morsch
-Use local SetTrack, KeepTrack and SetHighWaterMark methods
-to delegate either to local stack or to stack owned by AliRun.
-(Piotr Skowronski, A.M.)
-
-Revision 1.24 2001/07/20 09:34:56 morsch
-Count the number of spectator neutrons and protons and add information
-to the event header. (Chiara Oppedisano)
-
-Revision 1.23 2001/07/13 17:30:22 morsch
-Derive from AliGenMC.
-
-Revision 1.22 2001/06/11 13:09:23 morsch
-- Store cross-Section and number of binary collisions as a function of impact parameter
-- Pass AliGenHijingEventHeader to gAlice.
-
-Revision 1.21 2001/02/28 17:35:24 morsch
-Consider elastic interactions (ks = 1 and ks = 11) as spectator (Chiara Oppedisano)
-
-Revision 1.20 2001/02/14 15:50:40 hristov
-The last particle in event marked using SetHighWaterMark
-
-Revision 1.19 2000/12/21 16:24:06 morsch
-Coding convention clean-up
-
-Revision 1.18 2000/12/06 17:46:30 morsch
-Avoid random numbers 1 and 0.
-
-Revision 1.17 2000/12/04 11:22:03 morsch
-Init of sRandom as in 1.15
-
-Revision 1.16 2000/12/02 11:41:39 morsch
-Use SetRandom() to initialize random number generator in constructor.
-
-Revision 1.15 2000/11/30 20:29:02 morsch
-Initialise static variable sRandom in constructor: sRandom = fRandom;
-
-Revision 1.14 2000/11/30 07:12:50 alibrary
-Introducing new Rndm and QA classes
-
-Revision 1.13 2000/11/09 17:40:27 morsch
-Possibility to select/unselect spectator protons and neutrons.
-Method SetSpectators(Int_t spect) added. (FCA, Ch. Oppedisano)
-
-Revision 1.12 2000/10/20 13:38:38 morsch
-Debug printouts commented.
-
-Revision 1.11 2000/10/20 13:22:26 morsch
-- skip particle type 92 (string)
-- Charmed and beauty baryions (5122, 4122) are considered as stable consistent with
- mesons.
-
-Revision 1.10 2000/10/17 15:10:20 morsch
-Write first all the parent particles to the stack and then the final state particles.
-
-Revision 1.9 2000/10/17 13:38:59 morsch
-Protection against division by zero in EvaluateCrossSection() and KinematicSelection(..) (FCA)
-
-Revision 1.8 2000/10/17 12:46:31 morsch
-Protect EvaluateCrossSections() against division by zero.
-
-Revision 1.7 2000/10/02 21:28:06 fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.6 2000/09/11 13:23:37 morsch
-Write last seed to file (fortran lun 50) and reed back from same lun using calls to
-luget_hijing and luset_hijing.
-
-Revision 1.5 2000/09/07 16:55:40 morsch
-fHijing->Initialize(); after change of parameters. (Dmitri Yurevitch Peressounko)
-
-Revision 1.4 2000/07/11 18:24:56 fca
-Coding convention corrections + few minor bug fixes
-
-Revision 1.3 2000/06/30 12:08:36 morsch
-In member data: char* replaced by TString, Init takes care of resizing the strings to
-8 characters required by Hijing.
-
-Revision 1.2 2000/06/15 14:15:05 morsch
-Add possibility for heavy flavor selection: charm and beauty.
-
-Revision 1.1 2000/06/09 20:47:27 morsch
-AliGenerator interface class to HIJING using THijing (test version)
-
-*/
-
-
+/* $Id$ */
// Generator using HIJING as an external generator
// The main HIJING options are accessable for the user through this interface.
// Uses the THijing implementation of TGenerator.
+// Author:
+// Andreas Morsch (andreas.morsch@cern.ch)
//
-// andreas.morsch@cern.ch
-#include <TArrayI.h>
+#include <TClonesArray.h>
#include <TGraph.h>
#include <THijing.h>
#include <TLorentzVector.h>
#include "AliGenHijing.h"
#include "AliGenHijingEventHeader.h"
#include "AliRun.h"
+#include "AliHijingRndm.h"
-
- ClassImp(AliGenHijing)
+ClassImp(AliGenHijing)
AliGenHijing::AliGenHijing()
- :AliGenMC()
+ :AliGenMC(),
+ fFrame("CMS"),
+ fMinImpactParam(0.),
+ fMaxImpactParam(5.),
+ fKeep(0),
+ fQuench(1),
+ fShadowing(1),
+ fDecaysOff(1),
+ fTrigger(0),
+ fEvaluate(0),
+ fSelectAll(0),
+ fFlavor(0),
+ fEnergyCMS(5500.),
+ fKineBias(0.),
+ fTrials(0),
+ fXsection(0.),
+ fHijing(0),
+ fPtHardMin(0.),
+ fPtHardMax(1.e4),
+ fSpectators(1),
+ fDsigmaDb(0),
+ fDnDb(0),
+ fPtMinJet(-2.5),
+ fEtaMinJet(-20.),
+ fEtaMaxJet(+20.),
+ fPhiMinJet(0.),
+ fPhiMaxJet(2. * TMath::Pi()),
+ fRadiation(3),
+ fSimpleJet(kFALSE),
+ fNoGammas(kFALSE),
+ fProjectileSpecn(0),
+ fProjectileSpecp(0),
+ fTargetSpecn(0),
+ fTargetSpecp(0),
+ fLHC(kFALSE),
+ fRandomPz(kFALSE),
+ fNoHeavyQuarks(kFALSE)
{
// Constructor
fParticles = 0;
- fHijing = 0;
- fDsigmaDb = 0;
- fDnDb = 0;
+ AliHijingRndm::SetHijingRandom(GetRandom());
}
AliGenHijing::AliGenHijing(Int_t npart)
- :AliGenMC(npart)
+ :AliGenMC(npart),
+ fFrame("CMS"),
+ fMinImpactParam(0.),
+ fMaxImpactParam(5.),
+ fKeep(0),
+ fQuench(1),
+ fShadowing(1),
+ fDecaysOff(1),
+ fTrigger(0),
+ fEvaluate(0),
+ fSelectAll(0),
+ fFlavor(0),
+ fEnergyCMS(5500.),
+ fKineBias(0.),
+ fTrials(0),
+ fXsection(0.),
+ fHijing(0),
+ fPtHardMin(0.),
+ fPtHardMax(1.e4),
+ fSpectators(1),
+ fDsigmaDb(0),
+ fDnDb(0),
+ fPtMinJet(-2.5),
+ fEtaMinJet(-20.),
+ fEtaMaxJet(+20.),
+ fPhiMinJet(0.),
+ fPhiMaxJet(2. * TMath::Pi()),
+ fRadiation(3),
+ fSimpleJet(kFALSE),
+ fNoGammas(kFALSE),
+ fProjectileSpecn(0),
+ fProjectileSpecp(0),
+ fTargetSpecn(0),
+ fTargetSpecp(0),
+ fLHC(kFALSE),
+ fRandomPz(kFALSE),
+ fNoHeavyQuarks(kFALSE)
{
// Default PbPb collisions at 5. 5 TeV
//
fName = "Hijing";
fTitle= "Particle Generator using HIJING";
-
- SetEnergyCMS();
- SetImpactParameterRange();
- SetBoostLHC();
- SetJetEtaRange();
- SetJetPhiRange();
-
- fKeep = 0;
- fQuench = 1;
- fShadowing = 1;
- fTrigger = 0;
- fDecaysOff = 1;
- fEvaluate = 0;
- fSelectAll = 0;
- fFlavor = 0;
- fSpectators = 1;
- fDsigmaDb = 0;
- fDnDb = 0;
- fPtMinJet = -2.5;
- fRadiation = 3;
- fEventVertex.Set(3);
-//
- SetSimpleJets();
- SetNoGammas();
//
fParticles = new TClonesArray("TParticle",10000);
//
// Set random number generator
- sRandom = fRandom;
- fHijing = 0;
-
+ AliHijingRndm::SetHijingRandom(GetRandom());
}
-AliGenHijing::AliGenHijing(const AliGenHijing & Hijing)
-{
-// copy constructor
-}
-
-
AliGenHijing::~AliGenHijing()
{
// Destructor
fAProjectile, fZProjectile, fATarget, fZTarget,
fMinImpactParam, fMaxImpactParam));
- fHijing=(THijing*) fgMCEvGen;
+ fHijing=(THijing*) fMCEvGen;
fHijing->SetIHPR2(2, fRadiation);
fHijing->SetIHPR2(3, fTrigger);
fHijing->SetIHPR2(6, fShadowing);
fHijing->SetHIPR1(11, 2.5);
}
+//
+// Heavy quarks
+//
+ if (fNoHeavyQuarks) {
+ fHijing->SetIHPR2(49, 1);
+ } else {
+ fHijing->SetIHPR2(49, 0);
+ }
+
+ AliGenMC::Init();
//
// Initialize Hijing
Float_t polar[3] = {0,0,0};
Float_t origin[3] = {0,0,0};
Float_t origin0[3] = {0,0,0};
- Float_t p[3], random[6];
+ Float_t p[3];
Float_t tof;
// converts from mm/c to s
//
Int_t nt = 0;
Int_t jev = 0;
- Int_t j, kf, ks, imo;
+ Int_t j, kf, ks, ksp, imo;
kf = 0;
fTrials = 0;
for (j = 0;j < 3; j++) origin0[j] = fOrigin[j];
if(fVertexSmear == kPerEvent) {
- Float_t dv[3];
- dv[2] = 1.e10;
- while(TMath::Abs(dv[2]) > fCutVertexZ*fOsigma[2]) {
- Rndm(random,6);
- for (j=0; j < 3; j++) {
- dv[j] = fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
- TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
- }
- }
- for (j=0; j < 3; j++) origin0[j] += dv[j];
- } else if (fVertexSmear == kPerTrack) {
-// fHijing->SetMSTP(151,0);
- for (j = 0; j < 3; j++) {
-// fHijing->SetPARP(151+j, fOsigma[j]*10.);
- }
- }
+ Vertex();
+ for (j=0; j < 3; j++) origin0[j] = fVertex[j];
+ }
+
+
+ Float_t sign = (fRandomPz && (Rndm() < 0.5))? -1. : 1.;
while(1)
{
// Generate one event
// --------------------------------------------------------------------------
- fSpecn = 0;
- fSpecp = 0;
+ fProjectileSpecn = 0;
+ fProjectileSpecp = 0;
+ fTargetSpecn = 0;
+ fTargetSpecp = 0;
// --------------------------------------------------------------------------
fHijing->GenerateEvent();
fTrials++;
// Get event vertex
//
TParticle * iparticle = (TParticle *) fParticles->At(0);
- fEventVertex[0] = origin0[0];
- fEventVertex[1] = origin0[1];
- fEventVertex[2] = origin0[2];
+ fVertex[0] = origin0[0];
+ fVertex[1] = origin0[1];
+ fVertex[2] = origin0[2];
//
// First select parent particles
Bool_t selected = kTRUE;
kf = iparticle->GetPdgCode();
ks = iparticle->GetStatusCode();
+ ksp = iparticle->GetUniqueID();
// --------------------------------------------------------------------------
// Count spectator neutrons and protons
- if(ks == 0 || ks == 1 || ks == 10 || ks == 11){
- if(kf == kNeutron) fSpecn += 1;
- if(kf == kProton) fSpecp += 1;
+ if(ksp == 0 || ksp == 1){
+ if(kf == kNeutron) fProjectileSpecn += 1;
+ if(kf == kProton) fProjectileSpecp += 1;
+ }
+ else if(ksp == 10 || ksp == 11){
+ if(kf == kNeutron) fTargetSpecn += 1;
+ if(kf == kProton) fTargetSpecp += 1;
}
// --------------------------------------------------------------------------
//
if (!fSelectAll) {
selected = KinematicSelection(iparticle,0)&&SelectFlavor(kf);
- if (!fSpectators && selected) selected = (ks != 0 && ks != 1 && ks != 10
- && ks != 11);
+ if (!fSpectators && selected) selected = (ksp != 0 && ksp != 1 && ksp != 10
+ && ksp != 11);
}
//
// Put particle on the stack if selected
pSelected[i] = 1;
} // selected
} // particle loop final state
+
//
-// Write particles to stack
+// Time of the interactions
+ Float_t tInt = 0.;
+ if (fPileUpTimeWindow > 0.) tInt = fPileUpTimeWindow * (2. * gRandom->Rndm() - 1.);
+
//
+// Write particles to stack
+
for (i = 0; i<np; i++) {
TParticle * iparticle = (TParticle *) fParticles->At(i);
Bool_t hasMother = (iparticle->GetFirstMother() >=0);
Bool_t hasDaughter = (iparticle->GetFirstDaughter() >=0);
-
if (pSelected[i]) {
kf = iparticle->GetPdgCode();
ks = iparticle->GetStatusCode();
p[0] = iparticle->Px();
p[1] = iparticle->Py();
- p[2] = iparticle->Pz();
+ p[2] = iparticle->Pz() * sign;
origin[0] = origin0[0]+iparticle->Vx()/10;
origin[1] = origin0[1]+iparticle->Vy()/10;
origin[2] = origin0[2]+iparticle->Vz()/10;
- tof = kconv*iparticle->T();
+ tof = kconv * iparticle->T() + sign * origin0[2] / 3.e10;
+ if (fPileUpTimeWindow > 0.) tof += tInt;
+
imo = -1;
TParticle* mother = 0;
if (hasMother) {
imo = iparticle->GetFirstMother();
mother = (TParticle *) fParticles->At(imo);
- imo = (mother->GetPdgCode() != 92) ? imo = newPos[imo] : -1;
+ imo = (mother->GetPdgCode() != 92) ? newPos[imo] : -1;
} // if has mother
Bool_t tFlag = (fTrackIt && !hasDaughter);
- SetTrack(tFlag,imo,kf,p,origin,polar,
- tof,kPNoProcess,nt, 1., ks);
+ PushTrack(tFlag,imo,kf,p,origin,polar,tof,kPNoProcess,nt, 1., ks);
+
+
KeepTrack(nt);
newPos[i] = nt;
} // if selected
return res;
}
-Bool_t AliGenHijing::Stable(TParticle* particle)
+Bool_t AliGenHijing::Stable(TParticle* particle) const
{
// Return true for a stable particle
//
fHijing->GetN01(),
fHijing->GetN10(),
fHijing->GetN11());
- ((AliGenHijingEventHeader*) header)->SetSpectators(fSpecn, fSpecp);
+ ((AliGenHijingEventHeader*) header)->SetSpectators(fProjectileSpecn, fProjectileSpecp,
+ fTargetSpecn,fTargetSpecp);
+ ((AliGenHijingEventHeader*) header)->SetReactionPlaneAngle(fHijing->GetHINT1(20));
+
+
// 4-momentum vectors of the triggered jets.
//
// Bookkeeping for kinematic bias
((AliGenHijingEventHeader*) header)->SetTrials(fTrials);
// Event Vertex
- header->SetPrimaryVertex(fEventVertex);
- gAlice->SetGenEventHeader(header);
+ header->SetPrimaryVertex(fVertex);
+ AddHeader(header);
fCollisionGeometry = (AliGenHijingEventHeader*) header;
}
+void AliGenHijing::AddHeader(AliGenEventHeader* header)
+{
+ // Passes header either to the container or to gAlice
+ if (fContainer) {
+ fContainer->AddHeader(header);
+ } else {
+ gAlice->SetGenEventHeader(header);
+ }
+}
+
+
Bool_t AliGenHijing::CheckTrigger()
{
// Check the kinematic trigger condition
for (Int_t i = 0; i < np; i++) {
TParticle* part = (TParticle*) fParticles->At(i);
Int_t kf = part->GetPdgCode();
- Int_t ks = part->GetStatusCode();
- if (kf == 22 && ks == 40) {
+ Int_t ksp = part->GetUniqueID();
+ if (kf == 22 && ksp == 40) {
Float_t phi = part->Phi();
Float_t eta = part->Eta();
if (eta < fEtaMaxJet &&
} // fTrigger == 2
return triggered;
}
-
-
-
-
-AliGenHijing& AliGenHijing::operator=(const AliGenHijing& rhs)
-{
-// Assignment operator
- return *this;
-}
-
-#ifndef WIN32
-# define rluget_hijing rluget_hijing_
-# define rluset_hijing rluset_hijing_
-# define rlu_hijing rlu_hijing_
-# define type_of_call
-#else
-# define rluget_hijing RLUGET_HIJING
-# define rluset_hijing RLUSET_HIJING
-# define rlu_hijing RLU_HIJING
-# define type_of_call _stdcall
-#endif
-
-
-extern "C" {
- void type_of_call rluget_hijing(Int_t & /*lfn*/, Int_t & /*move*/)
- {printf("Dummy version of rluget_hijing reached\n");}
-
- void type_of_call rluset_hijing(Int_t & /*lfn*/, Int_t & /*move*/)
- {printf("Dummy version of rluset_hijing reached\n");}
-
- Double_t type_of_call rlu_hijing(Int_t & /*idum*/)
- {
- Float_t r;
- do r=sRandom->Rndm(); while(0 >= r || r >= 1);
- return r;
- }
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff