Import Geant4 10.0.0 source tree

2016-06-10 11:51:14 +02:00
parent e2d2f9810a
commit 286caacf06
12421 changed files with 730077 additions and 502383 deletions
@@ -0,0 +1,83 @@
+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * 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.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+// $Id$
+//
+// Multibody "phase space" generator using GENBOD (CERNLIB W515) method.
+//
+// Author:	Michael Kelsey (SLAC) <kelsey@slac.stanford.edu>
+
+#ifndef G4HadPhaseSpaceGenbod_HH
+#define G4HadPhaseSpaceGenbod_HH 1
+
+#include "G4VHadPhaseSpaceAlgorithm.hh"
+
+
+class G4HadPhaseSpaceGenbod : public G4VHadPhaseSpaceAlgorithm {
+public:
+  G4HadPhaseSpaceGenbod(G4int verbose=0);
+  virtual ~G4HadPhaseSpaceGenbod() {;}
+
+protected:
+  virtual void GenerateMultiBody(G4double initialMass,
+				 const std::vector<G4double>& masses,
+				 std::vector<G4LorentzVector>& finalState);
+
+protected:
+  void Initialize(G4double initialMass,
+		  const std::vector<G4double>& masses);
+			  
+  void FillRandomBuffer();
+
+  void ComputeWeightScale(const std::vector<G4double>& masses);
+
+  void FillEnergySteps(G4double initialMass,
+		       const std::vector<G4double>& masses);
+
+  void GenerateMomenta(const std::vector<G4double>& masses,
+		       std::vector<G4LorentzVector>& finalState);
+
+  void AccumulateFinalState(size_t i,
+			    const std::vector<G4double>& masses,
+			    std::vector<G4LorentzVector>& finalState);
+
+  G4bool AcceptEvent() const;	// Use accept-reject to generate distribution
+  G4double ComputeWeight() const;
+
+private:
+  size_t nFinal;		// Number of final state particles
+  G4double totalMass;		// Sum of final state masses
+  G4double massExcess;		// Available kinetic energy
+  G4double weightMax;		// Maximum possible weight
+  G4int nTrials;		// Accept/reject cycles taken
+
+  std::vector<G4double> msum;	// Cumulative sum of masses
+  std::vector<G4double> msq;	// Final state squared masses
+  std::vector<G4double> rndm;	// Random sequence for effective masses
+  std::vector<G4double> meff;	// Random final-state effective masses
+  std::vector<G4double> pd;	// Random momentum magnitudes
+};
+
+#endif	/* G4HadPhaseSpaceGenbod_HH */