| [819] | 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 | //
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| 27 | // $Id: G4StrawTubeXTRadiator.hh,v 1.4 2007/09/29 17:49:34 vnivanch Exp $
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| [961] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
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| [819] | 29 | //
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| 30 | //
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| 31 | ///////////////////////////////////////////////////////////////////////////
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| 32 | //
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| 33 | // Process describing a straw tube radiator of X-ray transition radiation.
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| 34 | // Thicknesses of plates and gas gaps are gamma distributed.
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| 35 | // We suppose that:
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| 36 | // formation zone ~ mean thickness << absorption length
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| 37 | // for each material and in the range 1-100 keV. This allows us to simplify
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| 38 | // interference effects in radiator stack (GetStackFactor method).
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| 39 | //
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| 40 | //
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| 41 | // History:
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| 42 | // 22.04.05 V. Grichine, first version
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| 43 | // 28.09.07, V.Ivanchenko general cleanup without change of algorithms
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| 44 | //
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| 45 |
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| 46 | #ifndef G4StrawTubeXTRadiator_h
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| 47 | #define G4StrawTubeXTRadiator_h 1
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| 48 |
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| 49 | #include <complex>
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| 50 | #include "G4VXTRenergyLoss.hh"
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| 51 |
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| 52 | class G4SandiaTable;
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| 53 |
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| 54 | class G4StrawTubeXTRadiator : public G4VXTRenergyLoss
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| 55 | {
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| 56 | public:
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| 57 |
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| 58 | G4StrawTubeXTRadiator (G4LogicalVolume* anEnvelope, G4Material*, G4Material*,
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| 59 | G4double,G4double,G4Material*,G4bool unishut = false,
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| 60 | const G4String & processName = "StrawTubeXTRadiator");
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| 61 | virtual ~G4StrawTubeXTRadiator ();
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| 62 |
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| 63 | // Auxiliary functions for plate/gas material parameters
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| 64 |
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| 65 | G4double GetMediumFormationZone(G4double,G4double,G4double) ;
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| 66 | void ComputeMediumPhotoAbsCof() ;
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| 67 | G4double GetMediumLinearPhotoAbs(G4double) ;
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| 68 | G4complex GetMediumComplexFZ(G4double,G4double,G4double) ;
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| 69 |
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| 70 | // Pure virtual function from base class
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| 71 | G4double GetStackFactor( G4double energy, G4double gamma, G4double varAngle);
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| 72 |
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| 73 | protected:
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| 74 |
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| 75 | G4int fMatIndex3;
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| 76 | G4double fSigma3;
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| 77 |
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| 78 | G4SandiaTable* fMediumPhotoAbsCof;
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| 79 | };
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| 80 |
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| 81 | #endif
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