126 lines
5.0 KiB
C++
126 lines
5.0 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4ElementaryParticleCollider.hh,v 1.35 2010/08/04 05:28:24 mkelsey Exp $
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// Geant4 tag: $Name: geant4-09-04 $
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//
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// 20100114 M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly
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// 20100315 M. Kelsey -- Remove "using" directive and unnecessary #includes.
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// 20100407 M. Kelsey -- Eliminate return-by-value std::vector<> by creating
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// three data buffers for particles, momenta, and particle types.
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// The following functions now return void and are non-const:
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// ::generateSCMfinalState()
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// ::generateMomModules() (also remove input vector)
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// ::generateStrangeChannelPartTypes()
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// ::generateSCMpionAbsorption()
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// 20100413 M. Kelsey -- Pass G4CollisionOutput by ref to ::collide(); merge
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// public vs. private ::collide() functions.
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// 20100511 M. Kelsey -- Remove G4PionSampler and G4NucleonSampler. Expand
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// particle-types selector to all modes, not just strangeness.
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// 20100517 M. Kelsey -- Inherit from common base class, make arrays static
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// 20100714 M. Kelsey -- Switch to new G4CascadeColliderBase class
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// 20100726 M. Kelsey -- Move remaining std::vector<> buffers here
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// 20100804 M. Kelsey -- Add printFinalStateTables() function.
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#ifndef G4ELEMENTARY_PARTICLE_COLLIDER_HH
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#define G4ELEMENTARY_PARTICLE_COLLIDER_HH
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#include "G4CascadeColliderBase.hh"
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#include "G4InuclElementaryParticle.hh"
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#include "G4LorentzVector.hh"
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#include <vector>
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class G4LorentzConvertor;
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class G4CollisionOutput;
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class G4ElementaryParticleCollider : public G4CascadeColliderBase {
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public:
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G4ElementaryParticleCollider();
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virtual ~G4ElementaryParticleCollider() {};
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void collide(G4InuclParticle* bullet, G4InuclParticle* target,
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G4CollisionOutput& output);
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private:
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void initializeArrays();
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G4int generateMultiplicity(G4int is, G4double ekin) const;
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void generateOutgoingPartTypes(G4int is, G4int mult, G4double ekin);
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void generateSCMfinalState(G4double ekin, G4double etot_scm, G4double pscm,
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G4InuclElementaryParticle* particle1,
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G4InuclElementaryParticle* particle2,
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G4LorentzConvertor* toSCM);
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void generateSCMpionAbsorption(G4double etot_scm,
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G4InuclElementaryParticle* particle1,
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G4InuclElementaryParticle* particle2);
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void generateMomModules(G4int mult, G4int is, G4double ekin,
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G4double etot_cm);
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// Samples the CM momentum for elastic and charge exchange scattering
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//
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G4LorentzVector
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sampleCMmomentumFor2to2(G4int is, G4int kw, G4double ekin,
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G4double pscm) const;
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// Samples cos(theta) in the CM for elastic and charge exchange scattering
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//
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G4double sampleCMcosFor2to2(G4double pscm, G4double pFrac,
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G4double pA, G4double pC, G4double pCos) const;
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G4double getMomModuleFor2toMany(G4int is, G4int mult, G4int knd,
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G4double ekin) const;
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G4bool satisfyTriangle(const std::vector<G4double>& modules) const;
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G4LorentzVector
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particleSCMmomentumFor2to3(G4int is, G4int knd, G4double ekin,
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G4double pmod) const;
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void printFinalStateTables() const;
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// Internal buffers for lists of secondaries
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std::vector<G4InuclElementaryParticle> particles;
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std::vector<G4LorentzVector> scm_momentums;
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std::vector<G4double> modules;
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std::vector<G4double> masses2;
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std::vector<G4int> particle_kinds;
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// Parameter arrays
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static const G4double rmn[14][10][2];
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static const G4double abn[4][4][4];
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};
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#endif /* G4ELEMENTARY_PARTICLE_COLLIDER_HH */
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