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include
G4XTRGammaRadModel.hh
Go to the documentation of this file.
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//
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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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// * include a list of copyright holders. *
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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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// ********************************************************************
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//
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//
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//
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//
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// Rough model describing a gamma function distributed radiator of X-ray
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// transition radiation. XTR is considered to flux after radiator!
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// Thicknesses of plates and gas gaps are distributed according to gamma
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// distribution. x are thicknesses of plates or gas gaps:
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//
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// p(x) = (alpha/<x>)^alpha * x^(alpha-1) * std::exp(-alpha*x/<x>) / G(alpha)
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//
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// G(alpha) is Euler's gamma function.
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// Plates have mean <x> = fPlateThick > 0 and power alpha = fAlphaPlate > 0 :
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// Gas gaps have mean <x> = fGasThick > 0 and power alpha = fAlphaGas > 0 :
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// We suppose that:
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// formation zone ~ mean thickness << absorption length
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// for each material and in the range 1-100 keV. This allows us to simplify
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// interference effects in radiator stack (GetStackFactor method).
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//
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//
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// History:
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//
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// 03.10.05 V. Grichine, first version
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//
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#ifndef G4XTRGammaRadModel_h
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#define G4XTRGammaRadModel_h 1
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#include "
G4VXTRenergyLoss.hh
"
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class
G4XTRGammaRadModel
:
public
G4VXTRenergyLoss
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{
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public
:
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G4XTRGammaRadModel
(
G4LogicalVolume
*anEnvelope,
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G4double
,
G4double
,
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G4Material
*,
G4Material
*,
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G4double
,
G4double
,
G4int
,
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const
G4String
& processName =
"XTRgammaRadiator"
);
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virtual
~G4XTRGammaRadModel
();
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// Pure virtual function from base class
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G4double
GetStackFactor
(
G4double
energy
,
G4double
gamma,
G4double
varAngle);
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private
:
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// G4double fAlphaPlate, fAlphaGas ;
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};
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#endif
G4XTRGammaRadModel::GetStackFactor
G4double GetStackFactor(G4double energy, G4double gamma, G4double varAngle)
Definition:
G4XTRGammaRadModel.cc:80
G4VXTRenergyLoss.hh
G4Material
Definition:
G4Material.hh:118
G4int
int G4int
Definition:
G4Types.hh:78
G4XTRGammaRadModel::~G4XTRGammaRadModel
virtual ~G4XTRGammaRadModel()
Definition:
G4XTRGammaRadModel.cc:64
energy
double energy
Definition:
plottest35.C:25
G4LogicalVolume
Definition:
G4LogicalVolume.hh:187
G4XTRGammaRadModel::G4XTRGammaRadModel
G4XTRGammaRadModel(G4LogicalVolume *anEnvelope, G4double, G4double, G4Material *, G4Material *, G4double, G4double, G4int, const G4String &processName="XTRgammaRadiator")
Definition:
G4XTRGammaRadModel.cc:42
G4VXTRenergyLoss
Definition:
G4VXTRenergyLoss.hh:74
G4XTRGammaRadModel
Definition:
G4XTRGammaRadModel.hh:56
G4double
double G4double
Definition:
G4Types.hh:76
G4String
Definition:
G4String.hh:45
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