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G4WeightWindowAlgorithm.hh
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// ********************************************************************
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//
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//
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// $Id: G4WeightWindowAlgorithm.hh 66356 2012-12-18 09:02:32Z gcosmo $
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//
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// ----------------------------------------------------------------------
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// Class G4WeightWindowAlgorithm
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//
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// Class description:
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// Implementation of a weight window algorithm.
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// The arguments in the constructor configure the algorithm:
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// - upperLimitFaktor: the factor defining the upper weight limit
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// W_u = upperLimitFaktor * W_l (W_l lower weight bound)
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// - survivalFaktor: used in calculating the survival weight
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// W_s = survivalFaktor * W_l
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// - maxNumberOfSplits: the maximal number of splits allowed
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// to be created in one go, and the reciprocal of the minimal
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// survival probability in case of Russian roulette
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//
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// In case of upperLimitFaktor=survivalFaktor=1 the algorithm
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// becomes the expected weight algorithm of the importance sampling
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// technique.
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//
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// see also G4VWeightWindowAlgorithm.
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//
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// Author: Michael Dressel (Michael.Dressel@cern.ch)
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// ----------------------------------------------------------------------
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#ifndef G4WeightWindowAlgorithm_hh
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#define G4WeightWindowAlgorithm_hh G4WeightWindowAlgorithm_hh
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#include "
G4Nsplit_Weight.hh
"
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#include "
G4VWeightWindowAlgorithm.hh
"
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class
G4WeightWindowAlgorithm
:
public
G4VWeightWindowAlgorithm
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{
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public
:
// with description
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G4WeightWindowAlgorithm
(
G4double
upperLimitFaktor = 5,
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G4double
survivalFaktor = 3,
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G4int
maxNumberOfSplits = 5);
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virtual
~G4WeightWindowAlgorithm
();
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virtual
G4Nsplit_Weight
Calculate
(
G4double
init_w,
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G4double
lowerWeightBound)
const
;
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// calculate number of tracks and their weight according
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// to the initial track weight and the lower energy bound
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private
:
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G4double
fUpperLimitFaktor
;
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G4double
fSurvivalFaktor
;
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G4int
fMaxNumberOfSplits
;
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};
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#endif
G4Nsplit_Weight.hh
G4WeightWindowAlgorithm::fUpperLimitFaktor
G4double fUpperLimitFaktor
Definition:
G4WeightWindowAlgorithm.hh:75
G4VWeightWindowAlgorithm
Definition:
G4VWeightWindowAlgorithm.hh:47
G4int
int G4int
Definition:
G4Types.hh:78
G4Nsplit_Weight
Definition:
G4Nsplit_Weight.hh:44
G4WeightWindowAlgorithm
Definition:
G4WeightWindowAlgorithm.hh:58
G4WeightWindowAlgorithm::Calculate
virtual G4Nsplit_Weight Calculate(G4double init_w, G4double lowerWeightBound) const
Definition:
G4WeightWindowAlgorithm.cc:54
G4WeightWindowAlgorithm::~G4WeightWindowAlgorithm
virtual ~G4WeightWindowAlgorithm()
Definition:
G4WeightWindowAlgorithm.cc:48
G4WeightWindowAlgorithm::fSurvivalFaktor
G4double fSurvivalFaktor
Definition:
G4WeightWindowAlgorithm.hh:76
G4WeightWindowAlgorithm::fMaxNumberOfSplits
G4int fMaxNumberOfSplits
Definition:
G4WeightWindowAlgorithm.hh:77
G4WeightWindowAlgorithm::G4WeightWindowAlgorithm
G4WeightWindowAlgorithm(G4double upperLimitFaktor=5, G4double survivalFaktor=3, G4int maxNumberOfSplits=5)
Definition:
G4WeightWindowAlgorithm.cc:40
G4VWeightWindowAlgorithm.hh
G4double
double G4double
Definition:
G4Types.hh:76
geant4.10.02.p01
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G4WeightWindowAlgorithm.hh
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