Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 #include <cmath> 27 #include "G4Exp.hh" 28 #include "G4Log.hh" 29 #include "G4XpipNTotal.hh" 30 #include "G4SystemOfUnits.hh" 31 32 G4XpipNTotal:: 33 G4XpipNTotal() 34 { 35 std::pair<double,double> it; 36 it.first=1105.46; it.second= 6.4; theLowED 37 it.first=1133.28; it.second= 18.0; theLowED 38 it.first=1165.12; it.second= 66.0; theLowED 39 it.first=1198.8; it.second= 160.; theLowED 40 it.first=1212.51; it.second= 199.; theLowED 41 it.first=1233.18; it.second= 195.; theLowED 42 it.first=1301.86; it.second= 73.8; theLowED 43 it.first=1368.93; it.second= 35.0; theLowED 44 it.first=1433.81; it.second= 22.0; theLowED 45 it.first=1496.42; it.second= 15.0; theLowED 46 it.first=1556.84; it.second= 15.2; theLowED 47 it.first=1615.21; it.second= 19.4; theLowED 48 it.first=1671.7; it.second= 25.; theLowED 49 it.first=1726.44; it.second= 26.; theLowED 50 it.first=1779.57; it.second= 30.; theLowED 51 it.first=1881.49; it.second= 40.; theLowED 52 it.first=1930.49; it.second= 40.; theLowED 53 it.first=2070.69; it.second= 30.; theLowED 54 it.first=2202.11; it.second= 29.; theLowED 55 it.first=2326.19; it.second= 30.7; theLowED 56 it.first=2405.38; it.second= 30.7; theLowED 57 it.first=2733.67; it.second= 28.3; theLowED 58 it.first=3207.21; it.second= 26.5; theLowED 59 it.first=4434.76; it.second= 25.0; theLowED 60 } 61 62 G4double G4XpipNTotal:: 63 CrossSection(const G4KineticTrack& trk1, cons 64 { 65 G4double sqrts = (trk1.Get4Momentum() + trk 66 if(sqrts > theLowEData.back().first/MeV) re 67 G4double result = 0; 68 size_t i(0), it(0); 69 if(sqrts<theLowEData[0].first) return 0; 70 for(i=0; i<theLowEData.size(); i++) 71 { 72 if(theLowEData[i].first/MeV>sqrts) break; 73 it = i; 74 } 75 G4double x1 = G4Log(theLowEData[it].first); 76 G4double x2 = G4Log(theLowEData[it+1].first 77 G4double y1 = G4Log(theLowEData[it].second) 78 G4double y2 = G4Log(theLowEData[it+1].secon 79 G4double x = G4Log(sqrts); 80 G4double y = y1+(x-x1)*(y2-y1)/(x2-x1); 81 result = G4Exp(y); 82 return result*millibarn; 83 } 84