Gabriele Cosmo
98 lines
4.6 KiB
C++
98 lines
4.6 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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//
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// $Id: $
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//
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// ---------------------------------------------------------------
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//
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// G4ILawCommonTruncatedExp
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//
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// Class Description:
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// A G4VBiasingInteractionLaw representing a truncated exponential
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// law : an exponential law acting on [0,L] segment. This law is
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// Common as it collects several process cross-sections, which sum
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// is used to drive the law.
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//
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// ---------------------------------------------------------------
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// Initial version Nov. 2013 M. Verderi
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#ifndef G4ILawCommonTruncatedExp_hh
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#define G4ILawCommonTruncatedExp_hh 1
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#include "G4VBiasingInteractionLaw.hh"
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#include "G4ILawTruncatedExp.hh"
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#include "G4ThreeVector.hh"
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class G4BOptnForceCommonTruncatedExp;
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class G4ILawCommonTruncatedExp : public G4VBiasingInteractionLaw
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{
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public:
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G4ILawCommonTruncatedExp(G4String name = "expSharedForceInteractionLaw");
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virtual ~G4ILawCommonTruncatedExp();
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public:
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virtual G4bool IsSingular() const
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{return fExpInteractionLaw.IsSingular();}
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virtual G4bool IsEffectiveCrossSectionInfinite() const
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{return fExpInteractionLaw.IsEffectiveCrossSectionInfinite();}
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private:
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// -- sample the distribution:
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// -- in this case, cheat by returning DBL_MAX, to let operation proposing the
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// -- step length in the alongGPIL
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virtual G4double SampleInteractionLength();
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// -- move by true path length, this position becomes the new initial point
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// -- in this case, cheat by returning DBL_MAX, to let operation proposing the
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// -- step length in the alongGPIL
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virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
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public:
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virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
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virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
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public:
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void SetNumberOfSharing(G4int n) { fNumberOfSharing = n; }
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G4int GetNumberOfSharing() const { return fNumberOfSharing; }
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void SetForceCrossSection( G4double xs ) { fExpInteractionLaw.SetForceCrossSection( xs ); }
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void reset();
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void SetMaximumDistance(G4double d) { fExpInteractionLaw.SetMaximumDistance(d); }
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G4double GetMaximumDistance() const {return fExpInteractionLaw.GetMaximumDistance();}
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G4double GetInteractionDistance() const {return fExpInteractionLaw.GetInteractionDistance();}
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void SetOperation( G4BOptnForceCommonTruncatedExp* operation) {fOperation = operation;}
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private:
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G4ILawTruncatedExp fExpInteractionLaw;
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//G4bool fIsSingular;
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G4int fNumberOfSharing;
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//G4bool fFirstInitializationCall;
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G4bool fFirstUpdateCall;
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G4bool fFirstSamplingCall;
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G4double fInteractionDistance;
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// TRICKY
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G4BOptnForceCommonTruncatedExp* fOperation;
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};
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#endif
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