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25 // 25 //
26 // neutron_hp -- source file 26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996 27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron trans 28 // A prototype of the low energy neutron transport model.
29 // P. Arce, June-2014 Conversion neutron_hp to 29 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
30 // 30 //
31 31
32 #include "G4ParticleHPWattSpectrum.hh" 32 #include "G4ParticleHPWattSpectrum.hh"
33 <<
34 #include "G4SystemOfUnits.hh" 33 #include "G4SystemOfUnits.hh"
35 34
36 G4double G4ParticleHPWattSpectrum::Sample(G4do << 35 G4double G4ParticleHPWattSpectrum::Sample(G4double anEnergy)
37 { << 36 {
38 G4double a = theApar.GetY(anEnergy) * eV; << 37 G4double a = theApar.GetY(anEnergy)*eV;
39 G4double b = theBpar.GetY(anEnergy) / eV; << 38 G4double b = theBpar.GetY(anEnergy)/eV;
40 G4double result = 0.; << 39 G4double result;
41 G4double random, cut, max; << 40 G4double random, cut, max;
42 max = std::sinh(std::sqrt(b * 15. * a)); << 41 max = std::sinh(std::sqrt(b*15.*a));
43 42
44 G4int icounter = 0; << 43 G4int icounter=0;
45 G4int icounter_max = 1024; << 44 G4int icounter_max=1024;
46 do { << 45 do
47 icounter++; << 46 {
48 if (icounter > icounter_max) { << 47 icounter++;
49 G4cout << "Loop-counter exceeded the thr << 48 if ( icounter > icounter_max ) {
50 << __FILE__ << "." << G4endl; << 49 G4cout << "Loop-counter exceeded the threshold value at " << __LINE__ << "th line of " << __FILE__ << "." << G4endl;
51 break; << 50 break;
>> 51 }
>> 52 random = G4UniformRand();
>> 53 result = -a*G4Log(random);
>> 54 cut = G4UniformRand();
52 } 55 }
53 random = G4UniformRand(); << 56 while(cut>std::sinh(std::sqrt(b*result))/max); // Loop checking, 11.05.2015, T. Koi
54 result = -a * G4Log(random); << 57 return result;
55 cut = G4UniformRand(); << 58 }
56 } while (cut > std::sinh(std::sqrt(b * resul <<
57 return result; <<
58 } <<
59 59