Gabriele Cosmo
116 lines
4.5 KiB
C++
116 lines
4.5 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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// GEANT 4 class header file
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//
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// History:
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// 21-5-98 1 version , V. Grichine
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// 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
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// 23-05-06, H. Burkhardt: Energy spectrum from function rather than table
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//
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// ------------------------------------------------------------
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#ifndef G4SynchrotronRadiation_h
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#define G4SynchrotronRadiation_h 1
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#include "globals.hh"
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#include "G4Step.hh"
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#include "G4ThreeVector.hh"
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#include "G4Track.hh"
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#include "G4VDiscreteProcess.hh"
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class G4LossTableManager;
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class G4ParticleDefinition;
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class G4PropagatorInField;
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class G4VEmAngularDistribution;
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class G4SynchrotronRadiation : public G4VDiscreteProcess
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{
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public:
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explicit G4SynchrotronRadiation(const G4String& pName = "SynRad",
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G4ProcessType type = fElectromagnetic);
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virtual ~G4SynchrotronRadiation();
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G4SynchrotronRadiation& operator=(const G4SynchrotronRadiation& right) =
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delete;
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G4SynchrotronRadiation(const G4SynchrotronRadiation&) = delete;
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virtual G4double GetMeanFreePath(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition) override;
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virtual G4VParticleChange* PostStepDoIt(const G4Track& track,
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const G4Step& Step) override;
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G4double GetPhotonEnergy(const G4Track& trackData, const G4Step& stepData);
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G4double GetRandomEnergySR(G4double, G4double, G4double);
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G4double InvSynFracInt(G4double x);
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G4double Chebyshev(G4double a, G4double b, const G4double c[], G4int n,
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G4double x);
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virtual G4bool IsApplicable(const G4ParticleDefinition&) override;
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virtual void BuildPhysicsTable(const G4ParticleDefinition&) override;
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void ProcessDescription(std::ostream&) const override;
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void DumpInfo() const override { ProcessDescription(G4cout); };
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void SetAngularGenerator(G4VEmAngularDistribution* p);
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private:
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G4LossTableManager* theManager;
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G4VEmAngularDistribution* genAngle;
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G4ParticleDefinition* theGamma;
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G4PropagatorInField* fFieldPropagator;
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G4bool FirstTime;
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G4bool FirstTime1;
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G4int secID = -1; // creator modelID
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};
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////////////////////////// INLINE METHODS /////////////////////////////
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inline G4double G4SynchrotronRadiation::Chebyshev(G4double a, G4double b,
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const G4double c[], G4int n,
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G4double x)
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{
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G4double y;
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G4double y2 = 2.0 * (y = (2.0 * x - a - b) / (b - a)); // Change of variable.
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G4double d = 0., dd = 0.;
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for(G4int j = n - 1; j >= 1; --j) // Clenshaw's recurrence.
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{
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G4double sv = d;
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d = y2 * d - dd + c[j];
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dd = sv;
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}
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return y * d - dd + 0.5 * c[0];
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}
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#endif // end of G4SynchrotronRadiation.hh
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