Gabriele Cosmo
219 lines
6.1 KiB
C++
219 lines
6.1 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: OlapGenerator.cc,v 1.2 2002/06/04 09:23:44 gcosmo Exp $
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// GEANT4 tag $Name: geant4-05-01 $
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//
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//
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// --------------------------------------------------------------
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// OlapGenerator
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//
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// Author: Martin Liendl - Martin.Liendl@cern.ch
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//
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// --------------------------------------------------------------
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//
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#include "OlapGenerator.hh"
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#include "G4Event.hh"
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#include "G4VisExtent.hh"
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#include "G4PrimaryParticle.hh"
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#include "G4Geantino.hh"
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#include "G4ChargedGeantino.hh"
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#include "G4RunManager.hh"
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#include "G4Run.hh"
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#include "G4Event.hh"
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//#define OLAPDEBUG1
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OlapGrid::OlapGrid()
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: count(3,0), gsize(3,3), axis(0), eventsPerRun(27)
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{
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Reset();
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G4cout << "OlapGrid(): " << G4endl
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<< " gsize: " << gsize[0] << " " << gsize[1]
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<< " " << gsize[2] << G4endl;
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}
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void OlapGrid::Next()
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{
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G4int out = (axis+1)%3; // outer loop
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G4int in = (axis+2)%3; // inner loop
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if ( !(count[in] = (count[in]+1)%gsize[in]) )
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{
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if( !(count[out] = (count[out]+1)%gsize[out]) )
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{
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axis = (axis+1)%3;
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}
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}
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}
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OlapGenerator::OlapGenerator() : autoinc(false)
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{
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if (!ext.size())
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{
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ext.push_back(1);
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ext.push_back(2);
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ext.push_back(3);
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}
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/*
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ext[0]=1.;
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ext[1]=2.;
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ext[2]=3.;
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*/
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}
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OlapGenerator::~OlapGenerator()
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{
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}
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void OlapGenerator::GeneratePrimaries(G4Event * anEvent)
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{
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G4int out = (grid.axis+1)%3; // outer loop
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G4int in = (grid.axis+2)%3; // inner loop
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posAB[grid.axis]=-ext[grid.axis]/2.;
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posAB[in]=-ext[in]/2.+ext[in]/G4double(grid.gsize[in]-1)
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*G4double(grid.count[in]);
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posAB[out]=-ext[out]/2.+ext[out]/G4double(grid.gsize[out]-1)
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*G4double(grid.count[out]);
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posBA = posAB;
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posBA[grid.axis]=-posBA[grid.axis];
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G4ThreeVector dirAB, dirBA;
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dirAB[grid.axis] = 1;
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dirBA[grid.axis] = -1;
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#ifdef OLAPDEBUG1
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G4int runID = G4RunManager::GetRunManager()->GetCurrentRun()->GetRunID();
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G4int evtID = anEvent->GetEventID();
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G4cout << "generator: "
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<< "run=" << runID << " evt=" << evtID
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<< " axis=" << grid.axis << " out=" << grid.count[out]
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<< " in=" << grid.count[in]
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<< " posAB=" << posAB
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<< " posBA=" << posBA << G4endl;
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#endif
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// now generator 2 geantinos flying in opposite direction from A->B and B->A
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// ==========================
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G4ParticleDefinition* pd = G4Geantino::GeantinoDefinition();
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// create 2 opposite positioned vertices
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G4PrimaryVertex* vertexAB =
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new G4PrimaryVertex(posAB,0);
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G4PrimaryVertex* vertexBA =
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new G4PrimaryVertex(posBA,0);
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// create one geantino per vertex as primary
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G4double mass = pd->GetPDGMass();
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G4double energy = 1. + mass;
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G4double pmom = sqrt(energy*energy-mass*mass);
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G4double pxAB = pmom*dirAB.x();
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G4double pyAB = pmom*dirAB.y();
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G4double pzAB = pmom*dirAB.z();
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G4double pxBA = pmom*dirBA.x();
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G4double pyBA = pmom*dirBA.y();
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G4double pzBA = pmom*dirBA.z();
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G4PrimaryParticle* particleAB = new G4PrimaryParticle(pd,pxAB,pyAB,pzAB);
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G4PrimaryParticle* particleBA = new G4PrimaryParticle(pd,pxBA,pyBA,pzBA);
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particleAB->SetMass( mass );
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particleBA->SetMass( mass );
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particleAB->SetCharge(0.);
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particleBA->SetCharge(0.);
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vertexAB->SetPrimary( particleAB );
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vertexBA->SetPrimary( particleBA );
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anEvent->AddPrimaryVertex( vertexAB );
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anEvent->AddPrimaryVertex( vertexBA );
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// ok, set all counters to be ready for the next position
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if (autoinc)
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grid.Next();
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/*
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if ( !(count[in] = (count[in]+1)%grid[in]) ) {
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if( !(count[out] = (count[out]+1)%grid[out]) ) {
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axis = (axis+1)%3;
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}
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}
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*/
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}
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void OlapGenerator::SetExtent(const G4VisExtent & anExt)
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{
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ext[0]=(anExt.GetXmax()-anExt.GetXmin());
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ext[1]=(anExt.GetYmax()-anExt.GetYmin());
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ext[2]=(anExt.GetZmax()-anExt.GetZmin());
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for (G4int i=0; i<3; i++)
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ext[i] += ext[i]/2000.; // enlarge by 1%
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Reset();
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}
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void OlapGenerator::SetExtent(G4double e)
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{
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ext[0]=e;
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ext[1]=e;
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ext[2]=e;
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}
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void OlapGenerator::Reset()
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{
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grid.Reset();
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/*
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for (G4int i=0; i<3; i++) {
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count[i]=0;
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}
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axis=0;
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*/
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}
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void OlapGenerator::SetGrid(G4int x, G4int y, G4int z)
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{
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if (x>2)
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grid.gsize[0]=x;
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else
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G4cerr << "Warning in OlapGenerator::SetGrid(): wrong x-grid parameter: " << x << G4endl;
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if (y>2)
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grid.gsize[1]=y;
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else
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G4cerr << "Warning in OlapGenerator::SetGrid(): wrong y-grid parameter: " << y << G4endl;
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if (z>2)
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grid.gsize[2]=z;
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else
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G4cerr << "Warning in OlapGenerator::SetGrid(): wrong z-grid parameter: " << z << G4endl;
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grid.eventsPerRun = x*y + y*z + x*z;
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Reset();
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}
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