| 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 | // $Id: G4UniversalFluctuation.hh,v 1.12 2010/08/08 08:19:59 urban Exp $ |
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| 27 | // GEANT4 tag $Name: emstand-V09-03-24 $ |
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| 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class header file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4UniversalFluctuation |
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| 35 | // |
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| 36 | // Author: V.Ivanchenko make a class with the Laszlo Urban model |
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| 37 | // |
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| 38 | // Creation date: 03.01.2002 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // |
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| 42 | // 09-12-02 remove warnings (V.Ivanchenko) |
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| 43 | // 28-12-02 add method Dispersion (V.Ivanchenko) |
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| 44 | // 07-02-03 change signature (V.Ivanchenko) |
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| 45 | // 13-02-03 Add name (V.Ivanchenko) |
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| 46 | // 16-10-03 Changed interface to Initialisation (V.Ivanchenko) |
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| 47 | // 07-02-05 define problim = 5.e-3 (mma) |
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| 48 | // |
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| 49 | // Class Description: |
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| 50 | // |
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| 51 | // Implementation of energy loss fluctuations |
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| 52 | |
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| 53 | // ------------------------------------------------------------------- |
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| 54 | // |
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| 55 | |
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| 56 | #ifndef G4UniversalFluctuation_h |
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| 57 | #define G4UniversalFluctuation_h 1 |
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| 58 | |
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| 59 | |
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| 60 | #include "G4VEmFluctuationModel.hh" |
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| 61 | #include "G4ParticleDefinition.hh" |
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| 62 | |
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| 63 | class G4UniversalFluctuation : public G4VEmFluctuationModel |
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| 64 | { |
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| 65 | |
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| 66 | public: |
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| 67 | |
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| 68 | G4UniversalFluctuation(const G4String& nam = "UniFluc"); |
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| 69 | |
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| 70 | virtual ~G4UniversalFluctuation(); |
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| 71 | |
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| 72 | virtual G4double SampleFluctuations(const G4Material*, |
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| 73 | const G4DynamicParticle*, |
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| 74 | G4double&, |
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| 75 | G4double&, |
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| 76 | G4double&); |
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| 77 | |
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| 78 | virtual G4double Dispersion( const G4Material*, |
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| 79 | const G4DynamicParticle*, |
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| 80 | G4double&, |
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| 81 | G4double&); |
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| 82 | |
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| 83 | virtual void InitialiseMe(const G4ParticleDefinition*); |
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| 84 | |
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| 85 | // Initialisation prestep |
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| 86 | virtual void SetParticleAndCharge(const G4ParticleDefinition*, G4double q2); |
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| 87 | |
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| 88 | private: |
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| 89 | |
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| 90 | // hide assignment operator |
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| 91 | G4UniversalFluctuation & operator=(const G4UniversalFluctuation &right); |
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| 92 | G4UniversalFluctuation(const G4UniversalFluctuation&); |
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| 93 | |
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| 94 | const G4ParticleDefinition* particle; |
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| 95 | const G4Material* lastMaterial; |
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| 96 | |
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| 97 | G4double particleMass; |
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| 98 | G4double chargeSquare; |
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| 99 | |
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| 100 | // data members to speed up the fluctuation calculation |
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| 101 | G4double ipotFluct; |
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| 102 | G4double electronDensity; |
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| 103 | |
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| 104 | G4double f1Fluct; |
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| 105 | G4double f2Fluct; |
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| 106 | G4double e1Fluct; |
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| 107 | G4double e2Fluct; |
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| 108 | G4double e1LogFluct; |
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| 109 | G4double e2LogFluct; |
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| 110 | G4double ipotLogFluct; |
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| 111 | G4double e0; |
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| 112 | G4double esmall; |
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| 113 | |
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| 114 | G4double e1,e2; |
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| 115 | |
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| 116 | G4double minNumberInteractionsBohr; |
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| 117 | G4double theBohrBeta2; |
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| 118 | G4double minLoss; |
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| 119 | G4double nmaxCont; |
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| 120 | G4double rate,fw; |
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| 121 | |
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| 122 | |
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| 123 | }; |
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| 124 | |
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| 125 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 126 | |
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| 127 | #endif |
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| 128 | |
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