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G4ParticleHPWattSpectrum.cc
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25 //
26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron transport model.
29 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
30 //
31 
33 #include "G4SystemOfUnits.hh"
34 
36  {
37  G4double a = theApar.GetY(anEnergy)*eV;
38  G4double b = theBpar.GetY(anEnergy)/eV;
40  G4double random, cut, max;
41  max = std::sinh(std::sqrt(b*15.*a));
42 
43  G4int icounter=0;
44  G4int icounter_max=1024;
45  do
46  {
47  icounter++;
48  if ( icounter > icounter_max ) {
49  G4cout << "Loop-counter exceeded the threshold value at " << __LINE__ << "th line of " << __FILE__ << "." << G4endl;
50  break;
51  }
52  random = G4UniformRand();
53  result = -a*G4Log(random);
54  cut = G4UniformRand();
55  }
56  while(cut>std::sinh(std::sqrt(b*result))/max); // Loop checking, 11.05.2015, T. Koi
57  return result;
58  }
G4double G4ParticleHPJENDLHEData::G4double result
std::vector< ExP01TrackerHit * > a
Definition: ExP01Classes.hh:33
int G4int
Definition: G4Types.hh:78
tuple b
Definition: test.py:12
#define G4UniformRand()
Definition: Randomize.hh:97
G4GLOB_DLL std::ostream G4cout
static constexpr double eV
Definition: G4SIunits.hh:215
G4double GetY(G4double x)
G4double G4Log(G4double x)
Definition: G4Log.hh:230
T max(const T t1, const T t2)
brief Return the largest of the two arguments
G4double Sample(G4double anEnergy)
#define G4endl
Definition: G4ios.hh:61
double G4double
Definition: G4Types.hh:76