Geant4  10.03.p02
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
G4ParticleHPWattSpectrum.cc
Go to the documentation of this file.
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 // 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