Gabriele Cosmo
65 lines
2.9 KiB
C++
65 lines
2.9 KiB
C++
//
|
|
// ********************************************************************
|
|
// * DISCLAIMER *
|
|
// * *
|
|
// * The following disclaimer summarizes all the specific disclaimers *
|
|
// * of contributors to this software. The specific disclaimers,which *
|
|
// * govern, are listed with their locations in: *
|
|
// * http://cern.ch/geant4/license *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. *
|
|
// * *
|
|
// * This code implementation is the intellectual property of the *
|
|
// * GEANT4 collaboration. *
|
|
// * By copying, distributing or modifying the Program (or any work *
|
|
// * based on the Program) you indicate your acceptance of this *
|
|
// * statement, and all its terms. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4VImportanceAlgorithm.hh,v 1.7 2002/10/14 12:36:01 dressel Exp $
|
|
// GEANT4 tag $Name: geant4-05-00 $
|
|
//
|
|
// ----------------------------------------------------------------------
|
|
// Class G4VImportanceAlgorithm
|
|
//
|
|
// Class description:
|
|
//
|
|
// This is an interface used by importance sampling to get the
|
|
// number of copies and weight a mother particle should be split
|
|
// into when crossing a boundary of "importance cells".
|
|
// The interface defines the input to be the ratio of the pre over
|
|
// the post importance and the weight of the mother track.
|
|
// It returns a struct containing the number of copies (including
|
|
// the mother track) to be produced and the weight of each track.
|
|
// A user defined algorithm deriving from this interface may be used
|
|
// by the importance sampling.
|
|
|
|
// Author: Michael Dressel (Michael.Dressel@cern.ch)
|
|
// ----------------------------------------------------------------------
|
|
#ifndef G4VImportanceAlgorithm_hh
|
|
#define G4VImportanceAlgorithm_hh G4VImportanceAlgorithm_hh
|
|
|
|
#include "G4Nsplit_Weight.hh"
|
|
|
|
class G4VImportanceAlgorithm
|
|
{
|
|
|
|
public: // with description
|
|
|
|
G4VImportanceAlgorithm();
|
|
virtual ~G4VImportanceAlgorithm();
|
|
virtual G4Nsplit_Weight Calculate(G4double ipre,
|
|
G4double ipost,
|
|
G4double init_w) const = 0;
|
|
// calculate the number of tracks and their weight according
|
|
// to the pre and post importance value and the weight of
|
|
// the mother track.
|
|
};
|
|
|
|
#endif
|