Gabriele Cosmo
262 lines
8.7 KiB
C++
262 lines
8.7 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: errprop.cc 84599 2014-10-17 07:42:42Z gcosmo $
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//
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/// \file errorpropagation/errprop.cc
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/// \brief Main program of the errorpropagation example
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//
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// ------------------------------------------------------------
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// GEANT 4 example main
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// ------------------------------------------------------------
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//
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// History:
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// - Created: P. Arce May 2007
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//
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#include "ExErrorDetectorConstruction.hh"
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#include "G4SteppingVerbose.hh"
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#include "G4ErrorPropagator.hh"
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#include "G4ErrorPropagatorData.hh"
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#include "G4ErrorPropagatorManager.hh"
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#include "G4ErrorPlaneSurfaceTarget.hh"
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#include "G4ErrorCylSurfaceTarget.hh"
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#include "G4ErrorGeomVolumeTarget.hh"
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#include "G4ErrorTrackLengthTarget.hh"
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#include "G4ErrorFreeTrajState.hh"
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#include "G4UImanager.hh"
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#include "G4SystemOfUnits.hh"
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void Initialize();
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G4ErrorTarget* BuildTarget( G4int iTarget );
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void ProcessEvent( G4int iProp, size_t nEv );
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void Finalize();
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G4ErrorTarget* theTarget;
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G4ErrorMode theG4ErrorMode;
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//-------------------------------------------------------------
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int main()
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{
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Initialize();
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//----- Choose propagation mode
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// 0: propagate until target, all steps in one go
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// 1: propagate until target, returning control to the user at each step
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G4int iProp = 0;
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char* prop = getenv("G4ERROR_PROP");
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if( prop ) {
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if( G4String(prop) == G4String("UNTIL_TARGET") ){
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iProp = 0;
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} else if ( G4String(prop) == G4String("STEP_BY_STEP") ) {
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iProp = 1;
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} else {
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G4Exception("exG4eReco","Fatal error in Argument",
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FatalErrorInArgument,
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G4String("Variable G4ERROR_PROP = " + G4String(prop) +
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" It must be: UNTIL_TARGET or STEP_BY_STEP").c_str());
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}
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} else {
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G4Exception("exG4eReco","Fatal error in Argument",
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JustWarning,
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"Variable G4ERROR_PROP not defined, taking it = UNTIL_TARGET");
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}
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size_t nEvents = 3;
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for( size_t ii = 0; ii < nEvents; ii++ ){
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ProcessEvent( iProp, ii );
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}
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Finalize();
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}
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//-------------------------------------------------------------
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void Initialize()
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{
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G4VSteppingVerbose::SetInstance(new G4SteppingVerbose);
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// Initialize the GEANT4e manager
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G4ErrorPropagatorManager* g4emgr
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= G4ErrorPropagatorManager::GetErrorPropagatorManager();
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G4ErrorPropagatorData* g4edata
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= G4ErrorPropagatorData::GetErrorPropagatorData();
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g4emgr->SetUserInitialization(new ExErrorDetectorConstruction);
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G4UImanager::GetUIpointer()->ApplyCommand("/exerror/setField -10. kilogauss");
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g4emgr->InitGeant4e();
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G4UImanager::GetUIpointer()->ApplyCommand("/control/verbose 1");
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G4UImanager::GetUIpointer()->ApplyCommand("/tracking/verbose 1");
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G4UImanager::GetUIpointer()->ApplyCommand("/geant4e/limits/stepLength 100 mm");
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//----- Choose target type:
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// 1: PlaneSurfaceTarget
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// 2: CylSurfaceTarget
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// 3: GeomVolumeTarget
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// 4: TrackLengthTarget
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G4int iTarget = 1;
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char* target = getenv("G4ERROR_TARGET");
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if( target ) {
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if( G4String(target) == G4String("PLANE_SURFACE") ) {
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iTarget = 1;
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}else if( G4String(target) == G4String("CYL_SURFACE") ) {
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iTarget = 2;
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}else if( G4String(target) == G4String("VOLUME") ) {
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iTarget = 3;
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}else if( G4String(target) == G4String("TRKLEN") ) {
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iTarget = 4;
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}else {
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G4Exception("exG4eReco","Fatal error in Argument",
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FatalErrorInArgument,
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G4String("Variable G4ERROR_TARGET = " + G4String(target) +
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" It must be: PLANE_SURFACE, CYL_SURFACE, VOLUME, TRKLEN").c_str());
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}
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} else {
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G4Exception("exG4eReco","Fatal error in Argument",
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JustWarning,"Variable G4ERROR_TARGET not defined, taking it = PLANE_SURFACE");
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}
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theTarget = BuildTarget( iTarget );
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g4edata->SetTarget( theTarget );
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theG4ErrorMode = G4ErrorMode_PropBackwards;
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char* mode = getenv("G4ERROR_MODE");
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if( mode ) {
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if( G4String(mode) == G4String("FORWARDS") ) {
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theG4ErrorMode = G4ErrorMode_PropForwards;
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} else if( G4String(mode) == G4String("BACKWARDS") ) {
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theG4ErrorMode = G4ErrorMode_PropBackwards;
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} else {
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G4Exception("exG4eReco","Fatal error in Argument",
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FatalErrorInArgument,
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G4String("Variable G4ERROR_MODE = " + G4String(mode) +
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" It must be: FORWARDS or BACKWARDS").c_str());
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}
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} else {
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G4Exception("exG4eReco","Fatal error in Argument",
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JustWarning,"Variable G4ERROR_MODE not defined, taking it = BACKWARDS");
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}
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}
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void ProcessEvent( G4int iProp, size_t )
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{
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// Set the starting trajectory.
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G4ThreeVector xv3( 0, 0, 0 );
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G4ThreeVector pv3( 20.0*GeV, 0.0, 0.0 );
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G4ErrorTrajErr error( 5, 0 );
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G4ErrorFreeTrajState* g4ErrorTrajState
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= new G4ErrorFreeTrajState( "mu-", xv3, pv3, error );
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G4ErrorPropagatorManager* g4emgr
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= G4ErrorPropagatorManager::GetErrorPropagatorManager();
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//int ierr = 0;
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G4Point3D surfPos(224.*cm,0.,0.);
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G4Normal3D surfNorm(1.,0.,0.);
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//- G4ErrorTarget* theG4ErrorTarget
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// = new G4ErrorPlaneSurfaceTarget(surfNorm, surfPos );
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if( iProp == 0){
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// Propagate until G4ErrorTarget is found all in one go
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//ierr =
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g4emgr->Propagate( g4ErrorTrajState, theTarget, theG4ErrorMode );
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} else if( iProp == 1){
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// Propagate until G4ErrorTarget is reached step by step
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g4emgr->InitTrackPropagation();
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// G4Track* aTrack
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// = G4EventManager::GetEventManager()->GetTrackingManager()->GetTrack();
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bool moreEvt = TRUE;
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while( moreEvt ){
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//ierr =
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g4emgr->PropagateOneStep( g4ErrorTrajState, theG4ErrorMode );
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//---- Check if target is reached
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if( g4emgr->GetPropagator()->CheckIfLastStep( g4ErrorTrajState->GetG4Track() )) {
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g4emgr->GetPropagator()
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->InvokePostUserTrackingAction( g4ErrorTrajState->GetG4Track() );
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moreEvt = 0;
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G4cout << "STEP_BY_STEP propagation: Last Step " << G4endl;
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}
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}
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}
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G4cout << " $$$ PROPAGATION ENDED " << G4endl;
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// extract current state info
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G4Point3D posEnd = g4ErrorTrajState->GetPosition();
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G4Normal3D momEnd = g4ErrorTrajState->GetMomentum();
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G4ErrorTrajErr errorEnd = g4ErrorTrajState->GetError();
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G4cout << " Position: " << posEnd << G4endl
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<< " Momentum: " << momEnd << G4endl
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<< " Error: " << errorEnd << G4endl;
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}
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//-------------------------------------------------------------
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G4ErrorTarget* BuildTarget( G4int iTarget )
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{
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G4ErrorTarget* target = 0;
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if( iTarget == 1 ) {
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G4Point3D surfPos(221.*cm,0.,0.);
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G4Normal3D surfNorm(1.,0.,0.);
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target = new G4ErrorPlaneSurfaceTarget(surfNorm, surfPos );
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}else if( iTarget == 2 ) {
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G4double radius = 222*cm;
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target = new G4ErrorCylSurfaceTarget(radius);
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}else if( iTarget == 3 ) {
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target = new G4ErrorGeomVolumeTarget("MUON");
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}else if( iTarget == 4 ) {
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target = new G4ErrorTrackLengthTarget(223.*cm);
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}else {
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G4Exception("exG4eReco","Fatal error in Argument",
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FatalErrorInArgument,"Target type has to be between 1 and 4");
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}
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return target;
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}
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//-------------------------------------------------------------
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void Finalize()
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{
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G4ErrorPropagatorManager::GetErrorPropagatorManager()->CloseGeometry();
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}
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