* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.5 2003/04/04 08:12:56 morsch
-Boost for assymmetric systems added.
-
-Revision 1.4 2003/04/01 20:39:00 morsch
-Pycell configurable.
-
-Revision 1.3 2003/03/31 15:47:16 morsch
-Unhandled cases added.
-
-Revision 1.2 2003/03/27 09:28:38 morsch
-Charm production process configuration for pPb and pp added
-(A. Dainese, N. Carrer)
-
-Revision 1.1 2003/03/15 15:00:48 morsch
-Classed imported from EVGEN.
-
-Revision 1.69 2003/01/14 10:50:19 alibrary
-Cleanup of STEER coding conventions
-
-Revision 1.68 2002/12/11 09:16:16 morsch
-Use GetJets to fill header.
-
-Revision 1.67 2002/12/09 15:24:09 morsch
-Same trigger routine can use Pycell or Pyclus.
-
-Revision 1.66 2002/12/09 08:22:56 morsch
-UA1 jet finder (Pycell) for software triggering added.
-
-Revision 1.65 2002/11/19 08:57:10 morsch
-Configuration of pt-kick added.
-
-Revision 1.64 2002/11/15 00:43:06 morsch
-Changes for kPyJets
-- initial and final state g-radiation + pt-kick default
-- trigger based on parton clusters (using pyclus)
-- trigger jets are stored in header.
-
-Revision 1.63 2002/10/14 14:55:35 hristov
-Merging the VirtualMC branch to the main development branch (HEAD)
-
-Revision 1.52.4.4 2002/10/10 16:40:08 hristov
-Updating VirtualMC to v3-09-02
-
-Revision 1.62 2002/09/24 10:00:01 morsch
-CheckTrigger() corrected.
-
-Revision 1.61 2002/07/30 09:52:38 morsch
-Call SetGammaPhiRange() and SetGammaEtaRange() in the constructor.
-
-Revision 1.60 2002/07/19 14:49:03 morsch
-Typo corrected.
-
-Revision 1.59 2002/07/19 14:35:36 morsch
-Count total number of trials. Print mean Q, x1, x2.
-
-Revision 1.58 2002/07/17 10:04:09 morsch
-SetYHard method added.
-
-Revision 1.57 2002/05/22 13:22:53 morsch
-Process kPyMbNonDiffr added.
-
-Revision 1.56 2002/04/26 10:30:01 morsch
-Option kPyBeautyPbMNR added. (N. Carrer).
-
-Revision 1.55 2002/04/17 10:23:56 morsch
-Coding Rule violations corrected.
-
-Revision 1.54 2002/03/28 11:49:10 morsch
-Pass status code in SetTrack.
-
-Revision 1.53 2002/03/25 14:51:13 morsch
-New stack-fill and count options introduced (N. Carrer).
-
-Revision 1.51 2002/03/06 08:46:57 morsch
-- Loop until np-1
-- delete dyn. alloc. arrays (N. Carrer)
-
-Revision 1.50 2002/03/03 13:48:50 morsch
-Option kPyCharmPbMNR added. Produce charm pairs in agreement with MNR
-NLO calculations (Nicola Carrer).
-
-Revision 1.49 2002/02/08 16:50:50 morsch
-Add name and title in constructor.
-
-Revision 1.48 2001/12/20 11:44:28 morsch
-Add kinematic bias for direct gamma production.
-
-Revision 1.47 2001/12/19 14:45:00 morsch
-Store number of trials in header.
-
-Revision 1.46 2001/12/19 10:36:19 morsch
-Add possibility if jet kinematic biasing.
-
-Revision 1.45 2001/11/28 08:06:52 morsch
-Use fMaxLifeTime parameter.
-
-Revision 1.44 2001/11/27 13:13:07 morsch
-Maximum lifetime for long-lived particles to be put on the stack is parameter.
-It can be set via SetMaximumLifetime(..).
-
-Revision 1.43 2001/10/21 18:35:56 hristov
-Several pointers were set to zero in the default constructors to avoid memory management problems
-
-Revision 1.42 2001/10/15 08:21:55 morsch
-Vertex truncation settings moved to AliGenMC.
-
-Revision 1.41 2001/10/08 08:45:42 morsch
-Possibility of vertex cut added.
-
-Revision 1.40 2001/09/25 11:30:23 morsch
-Pass event vertex to header.
-
-Revision 1.39 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 1.38 2001/07/13 10:58:54 morsch
-- Some coded moved to AliGenMC
-- Improved handling of secondary vertices.
-
-Revision 1.37 2001/06/28 11:17:28 morsch
-SetEventListRange setter added. Events in specified range are listed for
-debugging. (Yuri Kharlov)
-
-Revision 1.36 2001/03/30 07:05:49 morsch
-Final print-out in finish run.
-Write parton system for jet-production (preliminary solution).
-
-Revision 1.35 2001/03/09 13:03:40 morsch
-Process_t and Struc_Func_t moved to AliPythia.h
-
-Revision 1.34 2001/02/14 15:50:40 hristov
-The last particle in event marked using SetHighWaterMark
-
-Revision 1.33 2001/01/30 09:23:12 hristov
-Streamers removed (R.Brun)
-
-Revision 1.32 2001/01/26 19:55:51 hristov
-Major upgrade of AliRoot code
-
-Revision 1.31 2001/01/17 10:54:31 hristov
-Better protection against FPE
-
-Revision 1.30 2000/12/18 08:55:35 morsch
-Make AliPythia dependent generartors work with new scheme of random number generation
-
-Revision 1.29 2000/12/04 11:22:03 morsch
-Init of sRandom as in 1.15
-
-Revision 1.28 2000/12/02 11:41:39 morsch
-Use SetRandom() to initialize random number generator in constructor.
-
-Revision 1.27 2000/11/30 20:29:02 morsch
-Initialise static variable sRandom in constructor: sRandom = fRandom;
-
-Revision 1.26 2000/11/30 07:12:50 alibrary
-Introducing new Rndm and QA classes
-
-Revision 1.25 2000/10/18 19:11:27 hristov
-Division by zero fixed
-
-Revision 1.24 2000/09/18 10:41:35 morsch
-Add possibility to use nuclear structure functions from PDF library V8.
-
-Revision 1.23 2000/09/14 14:05:40 morsch
-dito
-
-Revision 1.22 2000/09/14 14:02:22 morsch
-- Correct conversion from mm to cm when passing particle vertex to MC.
-- Correct handling of fForceDecay == all.
-
-Revision 1.21 2000/09/12 14:14:55 morsch
-Call fDecayer->ForceDecay() at the beginning of Generate().
-
-Revision 1.20 2000/09/06 14:29:33 morsch
-Use AliPythia for event generation an AliDecayPythia for decays.
-Correct handling of "nodecay" option
-
-Revision 1.19 2000/07/11 18:24:56 fca
-Coding convention corrections + few minor bug fixes
-
-Revision 1.18 2000/06/30 12:40:34 morsch
-Pythia takes care of vertex smearing. Correct conversion from Pythia units (mm) to
-Geant units (cm).
-
-Revision 1.17 2000/06/09 20:34:07 morsch
-All coding rule violations except RS3 corrected
-
-Revision 1.16 2000/05/15 15:04:20 morsch
-The full event is written for fNtrack = -1
-Coding rule violations corrected.
-
-Revision 1.15 2000/04/26 10:14:24 morsch
-Particles array has one entry more than pythia particle list. Upper bound of
-particle loop changed to np-1 (R. Guernane, AM)
-
-Revision 1.14 2000/04/05 08:36:13 morsch
-Check status code of particles in Pythia event
-to avoid double counting as partonic state and final state particle.
-
-Revision 1.13 1999/11/09 07:38:48 fca
-Changes for compatibility with version 2.23 of ROOT
-
-Revision 1.12 1999/11/03 17:43:20 fca
-New version from G.Martinez & A.Morsch
-
-Revision 1.11 1999/09/29 09:24:14 fca
-Introduction of the Copyright and cvs Log
-*/
+/* $Id$ */
//
// Generator using the TPythia interface (via AliPythia)
#include "AliGenPythia.h"
#include "AliGenPythiaEventHeader.h"
#include "AliPythia.h"
+#include "AliPythiaRndm.h"
#include "AliRun.h"
+#include "AliStack.h"
+#include "AliRunLoader.h"
+#include "AliMC.h"
- ClassImp(AliGenPythia)
+ClassImp(AliGenPythia)
AliGenPythia::AliGenPythia()
:AliGenMC()
// Default Constructor
fParticles = 0;
fPythia = 0;
+ fHeader = 0;
fDecayer = new AliDecayerPythia();
SetEventListRange();
SetJetPhiRange();
SetGammaPhiRange();
SetGammaEtaRange();
SetPtKick();
+ SetQuench();
+
fSetNuclei = kFALSE;
+ if (!AliPythiaRndm::GetPythiaRandom())
+ AliPythiaRndm::SetPythiaRandom(GetRandom());
}
AliGenPythia::AliGenPythia(Int_t npart)
SetEnergyCMS();
fDecayer = new AliDecayerPythia();
// Set random number generator
- sRandom=fRandom;
+ if (!AliPythiaRndm::GetPythiaRandom())
+ AliPythiaRndm::SetPythiaRandom(GetRandom());
fFlavorSelect = 0;
// Produced particles
fParticles = new TClonesArray("TParticle",1000);
- fEventVertex.Set(3);
+ fHeader = 0;
SetEventListRange();
SetJetPhiRange();
SetJetEtaRange();
SetGammaPhiRange();
SetGammaEtaRange();
SetJetReconstructionMode();
+ SetQuench();
SetPtKick();
// Options determining what to keep in the stack (Heavy flavour generation)
fStackFillOpt = kFlavorSelection; // Keep particle with selected flavor
}
AliGenPythia::AliGenPythia(const AliGenPythia & Pythia)
+ :AliGenMC(Pythia)
{
// copy constructor
Pythia.Copy(*this);
// Initialisation
SetMC(AliPythia::Instance());
- fPythia=(AliPythia*) fgMCEvGen;
+ fPythia=(AliPythia*) fMCEvGen;
+
//
fParentWeight=1./Float_t(fNpart);
//
fParentSelect[0] = 421;
fFlavorSelect = 4;
break;
+ case kPyDPlusPbPbMNR:
+ case kPyDPluspPbMNR:
+ case kPyDPlusppMNR:
+ fParentSelect[0] = 411;
+ fFlavorSelect = 4;
+ break;
case kPyBeauty:
case kPyBeautyPbPbMNR:
case kPyBeautypPbMNR:
fDyBoost = 0;
Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n");
}
+
+ if (fQuench) {
+ fPythia->InitQuenching(0., 0.1, 6.e5, 0);
+ }
+
}
void AliGenPythia::Generate()
{
// Generate one event
+
fDecayer->ForceDecay();
Float_t polar[3] = {0,0,0};
Float_t origin[3] = {0,0,0};
- Float_t p[3];
+ Float_t p[4];
// converts from mm/c to s
const Float_t kconv=0.001/2.999792458e8;
//
Int_t jev=0;
Int_t j, kf;
fTrials=0;
+
// Set collision vertex position
- if(fVertexSmear==kPerEvent) {
- fPythia->SetMSTP(151,1);
- for (j=0;j<3;j++) {
- fPythia->SetPARP(151+j, fOsigma[j]*10.);
- }
- } else if (fVertexSmear==kPerTrack) {
- fPythia->SetMSTP(151,0);
- }
+ if (fVertexSmear == kPerEvent) Vertex();
+
// event loop
while(1)
{
+//
+// If quenching option has been selected switch off fragmentation first
+//
+ if (fQuench) {
+ fPythia->SetMSTJ(1, 0);
+ }
+//
+// Produce event
+//
fPythia->Pyevnt();
- if (gAlice->GetEvNumber()>=fDebugEventFirst &&
- gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(1);
- fTrials++;
+ if (fQuench) {
+//
+// Run quenching routine
+//
+ fPythia->Quench();
+// fPythia->Pylist(1);
+//
+// Switch fragmentation on
+ fPythia->SetMSTJ(1, 1);
+//
+// .. and perform fragmentation
+ fPythia->Pyexec();
+// fPythia->Pylist(1);
+
+ }
+ if (gAlice) {
+ if (gAlice->GetEvNumber()>=fDebugEventFirst &&
+ gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(1);
+ }
+
+ fTrials++;
fPythia->ImportParticles(fParticles,"All");
-
Boost();
//
//
Int_t np = fParticles->GetEntriesFast();
if (np == 0 ) continue;
-// Get event vertex and discard the event if the Z coord. is too big
- TParticle *iparticle = (TParticle *) fParticles->At(0);
- Float_t distz = iparticle->Vz()/10.;
- if(TMath::Abs(distz)>fCutVertexZ*fOsigma[2]) continue;
//
- fEventVertex[0] = iparticle->Vx()/10.+fOrigin.At(0);
- fEventVertex[1] = iparticle->Vy()/10.+fOrigin.At(1);
- fEventVertex[2] = iparticle->Vz()/10.+fOrigin.At(2);
+
//
Int_t* pParent = new Int_t[np];
Int_t* pSelected = new Int_t[np];
fProcess != kPyMbNonDiffr) {
for (i = 0; i<np; i++) {
- iparticle = (TParticle *) fParticles->At(i);
+ TParticle* iparticle = (TParticle *) fParticles->At(i);
Int_t ks = iparticle->GetStatusCode();
kf = CheckPDGCode(iparticle->GetPdgCode());
// No initial state partons
Bool_t flavorOK = kFALSE;
Bool_t selectOK = kFALSE;
if (fFeedDownOpt) {
- if (kfl >= fFlavorSelect) flavorOK = kTRUE;
+ if (kfl >= fFlavorSelect) flavorOK = kTRUE;
} else {
- if (kfl > fFlavorSelect) {
- nc = -1;
- break;
- }
- if (kfl == fFlavorSelect) flavorOK = kTRUE;
+ if (kfl > fFlavorSelect) {
+ nc = -1;
+ break;
+ }
+ if (kfl == fFlavorSelect) flavorOK = kTRUE;
}
switch (fStackFillOpt) {
case kFlavorSelection:
- selectOK = kTRUE;
- break;
+ selectOK = kTRUE;
+ break;
case kParentSelection:
- if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
- break;
+ if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
+ break;
}
if (flavorOK && selectOK) {
//
// Track final state particle
if (ks == 1) trackIt[i] = 1;
// Track semi-stable particles
- if ((ks ==1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1;
+ if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1;
// Track particles selected by process if undecayed.
if (fForceDecay == kNoDecay) {
if (ParentSelected(kf)) trackIt[i] = 1;
p[0] = iparticle->Px();
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
- origin[0] = fOrigin[0]+iparticle->Vx()/10.;
- origin[1] = fOrigin[1]+iparticle->Vy()/10.;
- origin[2] = fOrigin[2]+iparticle->Vz()/10.;
+ p[3] = iparticle->Energy();
+
+ origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
+ origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
+ origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
+
Float_t tof = kconv*iparticle->T();
Int_t ipa = iparticle->GetFirstMother()-1;
Int_t iparent = (ipa > -1) ? pParent[ipa] : -1;
- SetTrack(fTrackIt*trackIt[i] ,
- iparent, kf, p, origin, polar, tof, kPPrimary, nt, 1., ks);
+
+ PushTrack(fTrackIt*trackIt[i], iparent, kf,
+ p[0], p[1], p[2], p[3],
+ origin[0], origin[1], origin[2], tof,
+ polar[0], polar[1], polar[2],
+ kPPrimary, nt, 1., ks);
pParent[i] = nt;
KeepTrack(nt);
- } // SetTrack loop
+ } // PushTrack loop
}
} else {
nc = GenerateMB();
} // event loop
SetHighWaterMark(nt);
// adjust weight due to kinematic selection
- AdjustWeights();
+// AdjustWeights();
// get cross-section
fXsection=fPythia->GetPARI(1);
}
//
Int_t i, kf, nt, iparent;
Int_t nc = 0;
- Float_t p[3];
+ Float_t p[4];
Float_t polar[3] = {0,0,0};
Float_t origin[3] = {0,0,0};
// converts from mm/c to s
p[0] = iparticle->Px();
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
- origin[0] = fOrigin[0]+iparticle->Vx()/10.;
- origin[1] = fOrigin[1]+iparticle->Vy()/10.;
- origin[2] = fOrigin[2]+iparticle->Vz()/10.;
+ p[3] = iparticle->Energy();
+
+
+ origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
+ origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
+ origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
+
Float_t tof=kconv*iparticle->T();
- SetTrack(fTrackIt*trackIt, iparent, kf, p, origin, polar,
- tof, kPPrimary, nt, 1., ks);
+
+ PushTrack(fTrackIt*trackIt, iparent, kf,
+ p[0], p[1], p[2], p[3],
+ origin[0], origin[1], origin[2], tof,
+ polar[0], polar[1], polar[2],
+ kPPrimary, nt, 1., ks);
KeepTrack(nt);
pParent[i] = nt;
} // select particle
{
// Adjust the weights after generation of all events
//
- TParticle *part;
- Int_t ntrack=gAlice->GetNtrack();
- for (Int_t i=0; i<ntrack; i++) {
- part= gAlice->Particle(i);
- part->SetWeight(part->GetWeight()*fKineBias);
+ if (gAlice) {
+ TParticle *part;
+ Int_t ntrack=gAlice->GetMCApp()->GetNtrack();
+ for (Int_t i=0; i<ntrack; i++) {
+ part= gAlice->GetMCApp()->Particle(i);
+ part->SetWeight(part->GetWeight()*fKineBias);
+ }
}
}
void AliGenPythia::MakeHeader()
{
// Builds the event header, to be called after each event
- AliGenEventHeader* header = new AliGenPythiaEventHeader("Pythia");
+ if (fHeader) delete fHeader;
+ fHeader = new AliGenPythiaEventHeader("Pythia");
//
// Event type
- ((AliGenPythiaEventHeader*) header)->SetProcessType(fPythia->GetMSTI(1));
+ ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1));
//
// Number of trials
- ((AliGenPythiaEventHeader*) header)->SetTrials(fTrials);
+ ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials);
//
// Event Vertex
- header->SetPrimaryVertex(fEventVertex);
+ fHeader->SetPrimaryVertex(fVertex);
//
// Jets that have triggered
if (fProcess == kPyJets)
GetJets(njet, ntrig, jets);
for (Int_t i = 0; i < ntrig; i++) {
- ((AliGenPythiaEventHeader*) header)->AddJet(jets[0][i], jets[1][i], jets[2][i],
+ ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i],
jets[3][i]);
}
}
- gAlice->SetGenEventHeader(header);
+ if (gAlice) gAlice->SetGenEventHeader(fHeader);
}
AliGenPythia& AliGenPythia::operator=(const AliGenPythia& rhs)
{
// Assignment operator
+ rhs.Copy(*this);
return *this;
}
-void AliGenPythia::LoadEvent()
+void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag)
{
//
// Load event into Pythia Common Block
//
-
- Int_t npart = (Int_t) (gAlice->TreeK())->GetEntries();
- (fPythia->GetPyjets())->N = npart;
-
+// AliRunLoader* rl = AliRunLoader::GetRunLoader();
+ Int_t npart = stack -> GetNprimary();
+ Int_t n0 = 0;
+
+ if (!flag) {
+ (fPythia->GetPyjets())->N = npart;
+ } else {
+ n0 = (fPythia->GetPyjets())->N;
+ (fPythia->GetPyjets())->N = n0 + npart;
+ }
+
+
for (Int_t part = 0; part < npart; part++) {
- TParticle *MPart = gAlice->Particle(part);
+ TParticle *MPart = stack->Particle(part);
+
Int_t kf = MPart->GetPdgCode();
Int_t ks = MPart->GetStatusCode();
+
Float_t px = MPart->Px();
Float_t py = MPart->Py();
Float_t pz = MPart->Pz();
Float_t e = MPart->Energy();
- Float_t p = TMath::Sqrt(px * px + py * py + pz * pz);
- Float_t m = TMath::Sqrt(e * e - p * p);
+ Float_t m = MPart->GetCalcMass();
- (fPythia->GetPyjets())->P[0][part] = px;
- (fPythia->GetPyjets())->P[1][part] = py;
- (fPythia->GetPyjets())->P[2][part] = pz;
- (fPythia->GetPyjets())->P[3][part] = e;
- (fPythia->GetPyjets())->P[4][part] = m;
+ (fPythia->GetPyjets())->P[0][part+n0] = px;
+ (fPythia->GetPyjets())->P[1][part+n0] = py;
+ (fPythia->GetPyjets())->P[2][part+n0] = pz;
+ (fPythia->GetPyjets())->P[3][part+n0] = e;
+ (fPythia->GetPyjets())->P[4][part+n0] = m;
- (fPythia->GetPyjets())->K[1][part] = kf;
- (fPythia->GetPyjets())->K[0][part] = ks;
+ (fPythia->GetPyjets())->K[1][part+n0] = kf;
+ (fPythia->GetPyjets())->K[0][part+n0] = ks;
}
}
-void AliGenPythia::RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMax,
- Int_t& njets, Float_t jets [4][50])
+void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50])
{
//
// Calls the Pythia jet finding algorithm to find jets in the current event
Float_t pz = (fPythia->GetPyjets())->P[2][n+i];
Float_t e = (fPythia->GetPyjets())->P[3][n+i];
Float_t pt = TMath::Sqrt(px * px + py * py);
- Float_t phi = TMath::ATan2(py,px);
+ Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px);
Float_t theta = TMath::ATan2(pt,pz);
Float_t et = e * TMath::Sin(theta);
Float_t eta = -TMath::Log(TMath::Tan(theta / 2.));
if (
eta > fEtaMinJet && eta < fEtaMaxJet &&
- phi > fPhiMinJet && eta < fPhiMaxJet &&
+ phi > fPhiMinJet && phi < fPhiMaxJet &&
et > fEtMinJet && et < fEtMaxJet
)
{
}
#endif
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff