* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.6 2000/07/11 18:24:59 fca
-Coding convention corrections + few minor bug fixes
-
-Revision 1.5 2000/06/08 13:34:50 fca
-Better control of momentum range in GenBox
-
-Revision 1.4 1999/09/29 09:24:29 fca
-Introduction of the Copyright and cvs Log
+/* $Id$ */
-*/
-
-///////////////////////////////////////////////////////////////////
-// //
-// Generate the final state of the interaction as the input //
-// to the MonteCarlo //
-//
+//-----------------------------------------------------------------
+// Generate the final state of the interaction as the input
+// to the MonteCarlo
+// Author: A.Morsch
+//-----------------------------------------------------------------
//Begin_Html
/*
<img src="picts/AliGeneratorClass.gif">
//End_Html
// //
///////////////////////////////////////////////////////////////////
+#include <TGenerator.h>
+#include "AliCollisionGeometry.h"
+#include "AliConfig.h"
#include "AliGenerator.h"
#include "AliRun.h"
+#include "AliStack.h"
ClassImp(AliGenerator)
-TGenerator* AliGenerator::fgMCEvGen=0;
-//____________________________________________________________
-AliGenerator::AliGenerator()
+//_______________________________________________________________________
+AliGenerator::AliGenerator():
+ fMCEvGen(0),
+ fThetaMin(0),
+ fThetaMax(0),
+ fPhiMin(0),
+ fPhiMax(0),
+ fPMin(0),
+ fPMax(0),
+ fPtMin(0),
+ fPtMax(0),
+ fYMin(0),
+ fYMax(0),
+ fVMin(3),
+ fVMax(3),
+ fNpart(0),
+ fParentWeight(0),
+ fChildWeight(0),
+ fAnalog(0),
+ fVertexSmear(kNoSmear),
+ fVertexSource(kInternal),
+ fCutVertexZ(0),
+ fTrackIt(0),
+ fOrigin(3),
+ fOsigma(3),
+ fVertex(3),
+ fStack(0),
+ fCollisionGeometry(0)
{
//
// Default constructor
//
- printf("\n AliGenerator Default Constructor\n\n");
-
- gAlice->SetGenerator(this);
+ if (gAlice) {
+ if (gAlice->GetDebug()>0)
+ printf("\n AliGenerator Default Constructor\n\n");
+ gAlice->SetGenerator(this);
+ }
+
SetThetaRange(); ResetBit(kThetaRange);
SetPhiRange(); ResetBit(kPhiRange);
SetMomentumRange(); ResetBit(kMomentumRange);
SetYRange(); ResetBit(kYRange);
SetNumberParticles();
SetTrackingFlag();
+ SetCutVertexZ();
+
- fOrigin.Set(3);
- fOsigma.Set(3);
fOrigin[0]=fOrigin[1]=fOrigin[2]=0;
fOsigma[0]=fOsigma[1]=fOsigma[2]=0;
- fVMin.Set(3);
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+
fVMin[0]=fVMin[1]=fVMin[2]=0;
- fVMax.Set(3);
fVMax[0]=fVMax[1]=fVMax[2]=10000;
}
-//____________________________________________________________
-AliGenerator::AliGenerator(Int_t npart)
- : TNamed(" "," ")
+//_______________________________________________________________________
+AliGenerator::AliGenerator(Int_t npart):
+ fMCEvGen(0),
+ fThetaMin(0),
+ fThetaMax(0),
+ fPhiMin(0),
+ fPhiMax(0),
+ fPMin(0),
+ fPMax(0),
+ fPtMin(0),
+ fPtMax(0),
+ fYMin(0),
+ fYMax(0),
+ fVMin(3),
+ fVMax(3),
+ fNpart(0),
+ fParentWeight(0),
+ fChildWeight(0),
+ fAnalog(0),
+ fVertexSmear(kNoSmear),
+ fVertexSource(kInternal),
+ fCutVertexZ(0),
+ fTrackIt(0),
+ fOrigin(3),
+ fOsigma(3),
+ fVertex(3),
+ fStack(0),
+ fCollisionGeometry(0)
{
//
// Standard constructor
//
- printf("\n AliGenerator Constructor initializing number of particles \n\n");
- gAlice->SetGenerator(this);
+ if (gAlice) {
+ if (gAlice->GetDebug()>0)
+ printf("\n AliGenerator Constructor initializing number of particles \n\n");
+ gAlice->SetGenerator(this);
+ }
+
SetThetaRange(); ResetBit(kThetaRange);
SetPhiRange(); ResetBit(kPhiRange);
SetMomentumRange(); ResetBit(kMomentumRange);
SetPtRange(); ResetBit(kPtRange);
SetYRange(); ResetBit(kYRange);
SetTrackingFlag();
+ SetCutVertexZ();
- fOrigin.Set(3);
- fOsigma.Set(3);
fOrigin[0]=fOrigin[1]=fOrigin[2]=0;
fOsigma[0]=fOsigma[1]=fOsigma[2]=0;
- fVMin.Set(3);
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+
fVMin[0]=fVMin[1]=fVMin[2]=0;
- fVMax.Set(3);
fVMax[0]=fVMax[1]=fVMax[2]=10000;
SetNumberParticles(npart);
+
+ AliConfig::Instance()->Add(this);
}
-//____________________________________________________________
-AliGenerator::AliGenerator(const AliGenerator &gen) : TNamed(" "," ")
+//_______________________________________________________________________
+AliGenerator::AliGenerator(const AliGenerator &gen):
+ TNamed(gen),
+ AliRndm(gen),
+ fMCEvGen(0),
+ fThetaMin(0),
+ fThetaMax(0),
+ fPhiMin(0),
+ fPhiMax(0),
+ fPMin(0),
+ fPMax(0),
+ fPtMin(0),
+ fPtMax(0),
+ fYMin(0),
+ fYMax(0),
+ fVMin(3),
+ fVMax(3),
+ fNpart(0),
+ fParentWeight(0),
+ fChildWeight(0),
+ fAnalog(0),
+ fVertexSmear(kNoSmear),
+ fVertexSource(kInternal),
+ fCutVertexZ(0),
+ fTrackIt(0),
+ fOrigin(3),
+ fOsigma(3),
+ fVertex(3),
+ fStack(0)
{
//
// Copy constructor
gen.Copy(*this);
}
-//____________________________________________________________
+//_______________________________________________________________________
AliGenerator & AliGenerator::operator=(const AliGenerator &gen)
{
//
return (*this);
}
-//____________________________________________________________
+//_______________________________________________________________________
void AliGenerator::Copy(AliGenerator &/* gen */) const
{
//
Fatal("Copy","Not implemented!\n");
}
-//____________________________________________________________
+//_______________________________________________________________________
AliGenerator::~AliGenerator()
{
//
//
fOrigin.Set(0);
fOsigma.Set(0);
- delete fgMCEvGen;
+ if (fMCEvGen) {
+ delete fMCEvGen;
+ fMCEvGen=0;
+ }
}
+//_______________________________________________________________________
void AliGenerator::Init()
{
//
//
}
+//_______________________________________________________________________
+void AliGenerator::SetOrigin(Float_t ox, Float_t oy, Float_t oz)
+{
+ //
+ // Set the vertex for the generated tracks
+ //
+ fOrigin[0]=ox;
+ fOrigin[1]=oy;
+ fOrigin[2]=oz;
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetOrigin(const TLorentzVector &o)
+{
+ //
+ // Set the vertex for the generated tracks
+ //
+ fOrigin[0]=o[0];
+ fOrigin[1]=o[1];
+ fOrigin[2]=o[2];
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetSigma(Float_t sx, Float_t sy, Float_t sz)
+{
+ //
+ // Set the spread of the vertex
+ //
+ fOsigma[0]=sx;
+ fOsigma[1]=sy;
+ fOsigma[2]=sz;
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetMomentumRange(Float_t pmin, Float_t pmax)
+{
+ //
+ // Set the momentum range for the generated particles
+ //
+ fPMin = pmin;
+ fPMax = pmax;
+ SetBit(kMomentumRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetPtRange(Float_t ptmin, Float_t ptmax)
+{
+ //
+ // Set the Pt range for the generated particles
+ //
+ fPtMin = ptmin;
+ fPtMax = ptmax;
+ SetBit(kPtRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetPhiRange(Float_t phimin, Float_t phimax)
+{
+ //
+ // Set the Phi range for the generated particles
+ //
+ fPhiMin = TMath::Pi()*phimin/180;
+ fPhiMax = TMath::Pi()*phimax/180;
+ SetBit(kPhiRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetYRange(Float_t ymin, Float_t ymax)
+{
+ //
+ // Set the Rapidity range for the generated particles
+ //
+ fYMin=ymin;
+ fYMax=ymax;
+ SetBit(kYRange);
+}
+//_______________________________________________________________________
+void AliGenerator::SetVRange(Float_t vxmin, Float_t vxmax,
+ Float_t vymin, Float_t vymax,
+ Float_t vzmin, Float_t vzmax)
+{
+ //
+ // Set the vertex range for the generated particles
+ //
+ fVMin[0]=vxmin; fVMin[1]=vymin; fVMin[2]=vzmin;
+ fVMax[0]=vxmax; fVMax[1]=vymax; fVMax[2]=vzmax;
+ SetBit(kVertexRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetThetaRange(Float_t thetamin, Float_t thetamax)
+{
+ //
+ // Set the theta range for the generated particles
+ //
+ fThetaMin = TMath::Pi()*thetamin/180;
+ fThetaMax = TMath::Pi()*thetamax/180;
+ SetBit(kThetaRange);
+}
+
+void AliGenerator::Vertex()
+{
+ //
+ // Obtain vertex for current event from external source or calculated (internal)
+ //
+ if (fVertexSource == kInternal) {
+ VertexInternal();
+ } else if (fVertexSource == kContainer) {
+ ;
+ } else if (fVertexSource == kExternal) {
+ VertexExternal();
+ }
+}
+
+//_______________________________________________________________________
+void AliGenerator::VertexExternal()
+{
+ // Dummy !!!!!!
+ // Obtain vertex from external source
+ //
+ // Should be something like fVertex = gAlice->GetVertex()
+
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+}
+
+//_______________________________________________________________________
+void AliGenerator::VertexInternal()
+{
+ //
+ // Obtain calculated vertex
+ // Default is gaussian smearing
+ Float_t random[6];
+ Float_t dv[3];
+ Int_t j;
+
+ 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++) fVertex[j] = fOrigin[j] + dv[j];
+
+}
+
+//_______________________________________________________________________
+void AliGenerator::PushTrack(Int_t done, Int_t parent, Int_t pdg,
+ Float_t *pmom, Float_t *vpos, Float_t *polar,
+ Float_t tof, TMCProcess mech, Int_t &ntr,
+ Float_t weight, Int_t is)
+{
+ //
+ // Loads one track on the stack
+ //
+
+ if (fStack)
+ fStack->PushTrack(done, parent, pdg, pmom, vpos, polar, tof,
+ mech, ntr, weight, is);
+ else
+ gAlice->PushTrack(done, parent, pdg, pmom, vpos, polar, tof,
+ mech, ntr, weight, is);
+}
+
+//_______________________________________________________________________
+void AliGenerator::PushTrack(Int_t done, Int_t parent, Int_t pdg,
+ Double_t px, Double_t py, Double_t pz, Double_t e,
+ Double_t vx, Double_t vy, Double_t vz, Double_t tof,
+ Double_t polx, Double_t poly, Double_t polz,
+ TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is)
+{
+ //
+ // Loads one track on the stack
+ //
+
+ if (fStack)
+ fStack->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof,
+ polx, poly, polz, mech, ntr, weight, is);
+ else
+ gAlice->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof,
+ polx, poly, polz, mech, ntr, weight, is);
+}
+
+
+//_______________________________________________________________________
+void AliGenerator:: KeepTrack(Int_t itrack)
+{
+ //
+ // Declare a track permanent on the stack
+ //
+ if (fStack)
+ fStack->KeepTrack(itrack);
+ else
+ gAlice->KeepTrack(itrack);
+
+}
+
+//_______________________________________________________________________
+void AliGenerator:: SetHighWaterMark(Int_t nt)
+{
+ //
+ // Internal function to set the maximum index used in the stack
+ //
+ if (fStack)
+ fStack->SetHighWaterMark(nt);
+ else
+ gAlice->SetHighWaterMark(nt);
+
+}
+void AliGenerator::FinishRun()
+{
+ ;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff