| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: DMXMinEkineCuts.cc,v 1.6 2006/06/29 16:26:39 gunter Exp $
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| 28 | // GEANT4 tag $Name: $
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| 29 | //
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| 30 | //
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| 31 | // --------------------------------------------------------------
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| 32 | // GEANT 4 class implementation file
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| 33 | //
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| 34 | // History: first implementation, based on object model of
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| 35 | // 2nd December 1995, G.Cosmo
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| 36 | // --------------------------------------------------------------
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| 37 | // 15 April 1998 M.Maire
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| 38 | // --------------------------------------------------------------
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| 39 |
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| 40 | #include "DMXMinEkineCuts.hh"
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| 41 |
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| 42 | #include "G4Step.hh"
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| 43 | #include "G4UserLimits.hh"
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| 44 | #include "G4VParticleChange.hh"
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| 45 | #include "G4EnergyLossTables.hh"
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| 46 |
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| 47 | DMXMinEkineCuts::DMXMinEkineCuts(const G4String& aName)
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| 48 | : DMXSpecialCuts(aName)
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| 49 | {
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| 50 | if (verboseLevel>1) {
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| 51 | G4cout << GetProcessName() << " is created "<< G4endl;
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| 52 | }
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| 53 | SetProcessType(fUserDefined);
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| 54 | }
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| 55 |
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| 56 | DMXMinEkineCuts::~DMXMinEkineCuts()
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| 57 | {}
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| 58 |
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| 59 | DMXMinEkineCuts::DMXMinEkineCuts(DMXMinEkineCuts&)
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| 60 | : DMXSpecialCuts()
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| 61 | {}
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| 62 |
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| 63 |
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| 64 | G4double DMXMinEkineCuts::PostStepGetPhysicalInteractionLength(
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| 65 | const G4Track& aTrack,
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| 66 | G4double ,
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| 67 | G4ForceCondition* condition
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| 68 | )
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| 69 | {
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| 70 | // condition is set to "Not Forced"
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| 71 | *condition = NotForced;
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| 72 |
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| 73 | G4double proposedStep = DBL_MAX;
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| 74 | // get the pointer to UserLimits
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| 75 | G4UserLimits* pUserLimits = aTrack.GetVolume()->GetLogicalVolume()->GetUserLimits();
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| 76 | const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
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| 77 | G4ParticleDefinition* aParticleDef = aTrack.GetDefinition();
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| 78 |
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| 79 | if (pUserLimits && aParticleDef->GetPDGCharge() != 0.0) {
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| 80 | //min kinetic energy
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| 81 | G4double temp = DBL_MAX;
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| 82 | G4double eKine = aParticle->GetKineticEnergy();
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| 83 | const G4MaterialCutsCouple* couple = aTrack.GetMaterialCutsCouple();
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| 84 | G4double eMin = pUserLimits->GetUserMinEkine(aTrack);
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| 85 |
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| 86 | G4double rangeNow = DBL_MAX;
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| 87 |
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| 88 | rangeNow = G4EnergyLossTables::GetRange(aParticleDef,eKine,couple);
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| 89 |
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| 90 | if (eKine < eMin ) {
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| 91 | proposedStep = 0.;
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| 92 | } else {
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| 93 | // charged particles only
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| 94 | G4double rangeMin = G4EnergyLossTables::GetRange(aParticleDef,eMin,couple);
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| 95 | temp = rangeNow - rangeMin;
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| 96 | if (proposedStep > temp) proposedStep = temp;
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| 97 | }
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| 98 | }
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| 99 | return proposedStep;
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| 100 | }
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