1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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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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15 | // * use. Please see the license in the file LICENSE and URL above * |
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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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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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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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