* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-*/
+/* $Id$ */
+
+// Realisation of AliGenerator that generates particles with
+// vertices on a user defined grid.
+// The vertex positions can be smeared.
+// Momentum vectors are defined through the methods provided by AliGenerator.
+// Author: andreas.morsch@cern.ch
#include "AliGenScan.h"
-#include <stdlib.h>
#include "AliRun.h"
+
ClassImp(AliGenScan)
AliGenScan::AliGenScan()
:AliGenerator(-1)
{
-//
- fXmin=0;
- fXmax=0;
+// Constructor
+ fXCmin=0;
+ fXCmax=0;
fNx=1;
- fYmin=0;
- fYmax=0;
+ fYCmin=0;
+ fYCmax=0;
fNy=1;
fZmin=0;
fZmax=0;
AliGenScan::AliGenScan(Int_t npart)
:AliGenerator(npart)
{
- fXmin=0;
- fXmax=0;
+// Constructor
+ fName = "Scan";
+ fTitle = "Generator for particles on a grid";
+
+
+ fXCmin=0;
+ fXCmax=0;
fNx=1;
- fYmin=0;
- fYmax=0;
+ fYCmin=0;
+ fYCmax=0;
fNy=1;
fZmin=0;
fZmax=0;
//____________________________________________________________
AliGenScan::~AliGenScan()
-{}
+{
+// Destructor
+}
void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax,
Int_t ny, Float_t ymin, Float_t ymax,
Int_t nz, Float_t zmin, Float_t zmax)
{
- fXmin=xmin;
- fXmax=xmax;
+// Define the grid
+ fXCmin=xmin;
+ fXCmax=xmax;
fNx=nx;
- fYmin=ymin;
- fYmax=ymax;
+ fYCmin=ymin;
+ fYCmax=ymax;
fNy=ny;
fZmin=zmin;
fZmax=zmax;
Float_t dx,dy,dz;
//
- if (fNy > 0) {
- dx=(fXmax-fXmin)/fNx;
+ if (fNx > 0) {
+ dx=(fXCmax-fXCmin)/fNx;
} else {
dx=1e10;
}
if (fNy > 0) {
- dy=(fYmax-fYmin)/fNy;
+ dy=(fYCmax-fYCmin)/fNy;
} else {
dy=1e10;
}
for (Int_t ix=0; ix<fNx; ix++) {
for (Int_t iy=0; iy<fNy; iy++) {
for (Int_t iz=0; iz<fNz; iz++){
- gMC->Rndm(random,6);
- origin[0]=fXmin+ix*dx+2*(random[0]-0.5)*fOsigma[0];
- origin[1]=fYmin+iy*dy+2*(random[1]-0.5)*fOsigma[1];
+ Rndm(random,6);
+ origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0];
+ origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1];
origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2];
pmom=fPMin+random[3]*(fPMax-fPMin);
theta=fThetaMin+random[4]*(fThetaMax-fThetaMin);
p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta);
p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta);
p[2] = pmom*TMath::Cos(theta);
- gAlice->SetTrack(1,-1,fIpart,p,origin,polar,0,"Primary",nt);
+ PushTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt);
}
}
}