* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.8 2000/10/02 21:28:14 fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.7 2000/07/12 08:56:25 fca
-Coding convention correction and warning removal
-
-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 <TMCProcess.h>
+#include "AliLog.h"
+#include "AliCollisionGeometry.h"
+#include "AliConfig.h"
#include "AliGenerator.h"
#include "AliRun.h"
+#include "AliStack.h"
+#include "AliMC.h"
+#include "AliVertexGenerator.h"
ClassImp(AliGenerator)
-TGenerator* AliGenerator::fgMCEvGen=0;
-//____________________________________________________________
-AliGenerator::AliGenerator()
+//_______________________________________________________________________
+AliGenerator::AliGenerator():
+ TNamed(),
+ AliRndm(),
+ 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),
+ fPileUpTimeWindow(-1.),
+ fTrackIt(0),
+ fVertexGenerator(0),
+ fOrigin(3),
+ fOsigma(3),
+ fVertex(3),
+ fStack(0),
+ fContainer(0),
+ fCollisionGeometry(0),
+ fEnergyCMS(0),
+ fAProjectile(0),
+ fZProjectile(0),
+ fATarget(0),
+ fZTarget(0),
+ fProjectile(""),
+ fTarget("")
{
//
// Default constructor
//
- printf("\n AliGenerator Default Constructor\n\n");
-
- gAlice->SetGenerator(this);
+ if (gAlice) {
+ AliDebug(1, "AliGenerator Default Constructor");
+ AliMC * mc = gAlice->GetMCApp();
+ if (mc) mc->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):
+ TNamed(),
+ AliRndm(),
+ 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),
+ fPileUpTimeWindow(-1.),
+ fTrackIt(0),
+ fVertexGenerator(0),
+ fOrigin(3),
+ fOsigma(3),
+ fVertex(3),
+ fStack(0),
+ fContainer(0),
+ fCollisionGeometry(0),
+ fEnergyCMS(0),
+ fAProjectile(0),
+ fZProjectile(0),
+ fATarget(0),
+ fZTarget(0),
+ fProjectile(""),
+ fTarget("")
{
//
// Standard constructor
//
- printf("\n AliGenerator Constructor initializing number of particles \n\n");
- gAlice->SetGenerator(this);
+ if (gAlice) {
+ AliDebug(1, "AliGenerator Constructor initializing number of particles");
+ AliMC * mc = gAlice->GetMCApp();
+ if (mc) mc->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);
-}
-//____________________________________________________________
-AliGenerator::AliGenerator(const AliGenerator &gen) : TNamed(" "," ")
-{
- //
- // Copy constructor
- //
- gen.Copy(*this);
-}
-
-//____________________________________________________________
-AliGenerator & AliGenerator::operator=(const AliGenerator &gen)
-{
- //
- // Assignment operator
- //
- gen.Copy(*this);
- return (*this);
-}
-
-//____________________________________________________________
-void AliGenerator::Copy(AliGenerator &/* gen */) const
-{
- //
- // Copy *this onto gen
- //
- Fatal("Copy","Not implemented!\n");
+ AliConfig::Instance()->Add(this);
}
-//____________________________________________________________
+//_______________________________________________________________________
AliGenerator::~AliGenerator()
{
//
//
fOrigin.Set(0);
fOsigma.Set(0);
- delete fgMCEvGen;
+ if (fMCEvGen) {
+ delete fMCEvGen;
+ fMCEvGen=0;
+ }
}
+//_______________________________________________________________________
void AliGenerator::Init()
{
//
// Set the Phi range for the generated particles
//
fPhiMin = TMath::Pi()*phimin/180;
- fPhiMax = TMath::Pi()*phimax/180; SetBit(kPhiRange);
+ fPhiMax = TMath::Pi()*phimax/180;
+ SetBit(kPhiRange);
}
//_______________________________________________________________________
// Set the theta range for the generated particles
//
fThetaMin = TMath::Pi()*thetamin/180;
- fThetaMax = TMath::Pi()*thetamax/180; SetBit(kThetaRange);
+ 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()
+{
+ //
+ // Obtain vertex from external source (vertex generator)
+ //
+ TVector3 vertex = fVertexGenerator->GetVertex();
+ fVertex[0] = vertex.X();
+ fVertex[1] = vertex.Y();
+ fVertex[2] = vertex.Z();
+}
+
+//_______________________________________________________________________
+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;
+ if (!TestBit(kVertexRange)) {
+ 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];
+ } else {
+ Rndm(random,3);
+ for (j=0; j < 3; j++)
+ fVertex[j] = fVMin[j] + random[j] * (fVMax[j] - fVMin[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->GetMCApp()->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->GetMCApp()->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->GetMCApp()->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->GetMCApp()->SetHighWaterMark(nt);
+
+}
+void AliGenerator::FinishRun()
+{
+ ;
}