| 1 | // |
|---|
| 2 | // ******************************************************************** |
|---|
| 3 | // * License and Disclaimer * |
|---|
| 4 | // * * |
|---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
|---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
|---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
|---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
|---|
| 9 | // * include a list of copyright holders. * |
|---|
| 10 | // * * |
|---|
| 11 | // * Neither the authors of this software system, nor their employing * |
|---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
|---|
| 13 | // * work make any representation or warranty, express or implied, * |
|---|
| 14 | // * regarding this software system or assume any liability for its * |
|---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
|---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
|---|
| 17 | // * * |
|---|
| 18 | // * This code implementation is the result of the scientific and * |
|---|
| 19 | // * technical work of the GEANT4 collaboration. * |
|---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
|---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
|---|
| 22 | // * use in resulting scientific publications, and indicate your * |
|---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
|---|
| 24 | // ******************************************************************** |
|---|
| 25 | // |
|---|
| 26 | // $Id: G4UniversalFluctuation.hh,v 1.6 2008/10/22 16:04:33 vnivanch Exp $ |
|---|
| 27 | // GEANT4 tag $Name: geant4-09-02 $ |
|---|
| 28 | // |
|---|
| 29 | // ------------------------------------------------------------------- |
|---|
| 30 | // |
|---|
| 31 | // GEANT4 Class header file |
|---|
| 32 | // |
|---|
| 33 | // |
|---|
| 34 | // File name: G4UniversalFluctuation |
|---|
| 35 | // |
|---|
| 36 | // Author: Vladimir Ivanchenko |
|---|
| 37 | // |
|---|
| 38 | // Creation date: 03.01.2002 |
|---|
| 39 | // |
|---|
| 40 | // Modifications: |
|---|
| 41 | // |
|---|
| 42 | // 09-12-02 remove warnings (V.Ivanchenko) |
|---|
| 43 | // 28-12-02 add method Dispersion (V.Ivanchenko) |
|---|
| 44 | // 07-02-03 change signature (V.Ivanchenko) |
|---|
| 45 | // 13-02-03 Add name (V.Ivanchenko) |
|---|
| 46 | // 16-10-03 Changed interface to Initialisation (V.Ivanchenko) |
|---|
| 47 | // 07-02-05 define problim = 5.e-3 (mma) |
|---|
| 48 | // |
|---|
| 49 | // Class Description: |
|---|
| 50 | // |
|---|
| 51 | // Implementation of energy loss fluctuations |
|---|
| 52 | |
|---|
| 53 | // ------------------------------------------------------------------- |
|---|
| 54 | // |
|---|
| 55 | |
|---|
| 56 | #ifndef G4UniversalFluctuation_h |
|---|
| 57 | #define G4UniversalFluctuation_h 1 |
|---|
| 58 | |
|---|
| 59 | |
|---|
| 60 | #include "G4VEmFluctuationModel.hh" |
|---|
| 61 | #include "G4ParticleDefinition.hh" |
|---|
| 62 | |
|---|
| 63 | class G4UniversalFluctuation : public G4VEmFluctuationModel |
|---|
| 64 | { |
|---|
| 65 | |
|---|
| 66 | public: |
|---|
| 67 | |
|---|
| 68 | G4UniversalFluctuation(const G4String& nam = "UniFluc"); |
|---|
| 69 | |
|---|
| 70 | virtual ~G4UniversalFluctuation(); |
|---|
| 71 | |
|---|
| 72 | G4double SampleFluctuations(const G4Material*, |
|---|
| 73 | const G4DynamicParticle*, |
|---|
| 74 | G4double&, |
|---|
| 75 | G4double&, |
|---|
| 76 | G4double&); |
|---|
| 77 | |
|---|
| 78 | G4double Dispersion( const G4Material*, |
|---|
| 79 | const G4DynamicParticle*, |
|---|
| 80 | G4double&, |
|---|
| 81 | G4double&); |
|---|
| 82 | |
|---|
| 83 | void InitialiseMe(const G4ParticleDefinition*); |
|---|
| 84 | |
|---|
| 85 | // Initialisation prestep |
|---|
| 86 | inline void SetParticleAndCharge(const G4ParticleDefinition*, G4double q2); |
|---|
| 87 | |
|---|
| 88 | protected: |
|---|
| 89 | |
|---|
| 90 | private: |
|---|
| 91 | |
|---|
| 92 | // hide assignment operator |
|---|
| 93 | G4UniversalFluctuation & operator=(const G4UniversalFluctuation &right); |
|---|
| 94 | G4UniversalFluctuation(const G4UniversalFluctuation&); |
|---|
| 95 | |
|---|
| 96 | const G4ParticleDefinition* particle; |
|---|
| 97 | const G4Material* lastMaterial; |
|---|
| 98 | |
|---|
| 99 | G4double particleMass; |
|---|
| 100 | G4double chargeSquare; |
|---|
| 101 | |
|---|
| 102 | // data members to speed up the fluctuation calculation |
|---|
| 103 | G4double ipotFluct; |
|---|
| 104 | G4double electronDensity; |
|---|
| 105 | |
|---|
| 106 | G4double f1Fluct; |
|---|
| 107 | G4double f2Fluct; |
|---|
| 108 | G4double e1Fluct; |
|---|
| 109 | G4double e2Fluct; |
|---|
| 110 | G4double e1LogFluct; |
|---|
| 111 | G4double e2LogFluct; |
|---|
| 112 | G4double ipotLogFluct; |
|---|
| 113 | G4double e0; |
|---|
| 114 | |
|---|
| 115 | G4double facwidth; |
|---|
| 116 | G4double oldloss; |
|---|
| 117 | G4double samestep; |
|---|
| 118 | G4double e1,e2; |
|---|
| 119 | |
|---|
| 120 | G4double minNumberInteractionsBohr; |
|---|
| 121 | G4double theBohrBeta2; |
|---|
| 122 | G4double minLoss; |
|---|
| 123 | G4double nmaxCont1; |
|---|
| 124 | G4double nmaxCont2; |
|---|
| 125 | |
|---|
| 126 | }; |
|---|
| 127 | |
|---|
| 128 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
|---|
| 129 | |
|---|
| 130 | inline void |
|---|
| 131 | G4UniversalFluctuation::SetParticleAndCharge(const G4ParticleDefinition* part, |
|---|
| 132 | G4double q2) |
|---|
| 133 | { |
|---|
| 134 | if(part != particle) { |
|---|
| 135 | particle = part; |
|---|
| 136 | particleMass = part->GetPDGMass(); |
|---|
| 137 | } |
|---|
| 138 | chargeSquare = q2; |
|---|
| 139 | } |
|---|
| 140 | |
|---|
| 141 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
|---|
| 142 | |
|---|
| 143 | #endif |
|---|
| 144 | |
|---|
