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Modified vertex creation in R, how it is flat over the circle of radi… #1

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11 changes: 10 additions & 1 deletion src/A2PrimaryGeneratorAction.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,7 @@ void A2PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
//This function is called at the begining of event
Float_t Mass;
Float_t P;
Float_t r_v,x_v,y_v,test_v;
G4ThreeVector pvec;
switch(fMode){
case EPGA_g4:
Expand Down Expand Up @@ -134,7 +135,15 @@ void A2PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
G4cout<<"I have taken the liberty of choosing a new one inside!! see void A2PrimaryGeneratorAction::GeneratePrimaries"<<G4endl<<"I will not print this warning again, but will continue to move the vertex inside the target, to stop this please modify A2PrimaryGeneratorAction.cc around line 130"<<G4endl;
}
fThreeVector.setZ(fDetCon->GetTarget()->GetCenter().z()+fDetCon->GetTarget()->GetLength()/2*(2*G4UniformRand()-1));
fThreeVector.setPerp(fDetCon->GetTarget()->GetRadius()*G4UniformRand());
r_v=0.0;
while(r_v == 0.0 ) {
x_v = fDetCon->GetTarget()->GetRadius()*(2*G4UniformRand()-1);
y_v = fDetCon->GetTarget()->GetRadius()*(2*G4UniformRand()-1);
test_v = pow(x_v,2)+pow(y_v,2);
if (test_v<pow(fDetCon->GetTarget()->GetRadius(),2)) r_v = test_v;
}
fThreeVector.setX(x_v);
fThreeVector.setY(y_v);
if(fTargetWarning==0){G4cout<<fThreeVector<<" from "<<"("<<fGenPosition[0]*cm<<","<<fGenPosition[1]*cm<<","<<fGenPosition[2]*cm<<")*mm"<<G4endl;}
fGenPosition[0]=fThreeVector.x()/cm;
fGenPosition[1]=fThreeVector.y()/cm;
Expand Down