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