Gabriele Cosmo
136 lines
6.0 KiB
C++
136 lines
6.0 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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//
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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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// 20110923 M. Kelsey -- Add optional stream& to printFinalStateTables().
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// 20130129 M. Kelsey -- Add static arrays and interpolators for two-body
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// angular distributions (addresses MT thread-local issue)
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// 20130131 D. Wright -- Use new *AngDst classes for gamma-N two-body
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// 20130220 M. Kelsey -- Replace two-body angular code with new *AngDst classes
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// 20130221 M. Kelsey -- Move two-body angular dist classes to factory
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// 20130306 M. Kelsey -- Move printFinalStateTables() to table factory
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// 20130307 M. Kelsey -- Reverse order of dimensions for rmn array
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// 20130422 M. Kelsey -- Move kinematics to G4CascadeFinalStateAlgorithm
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// 20130508 D. Wright -- Add muon capture, with absorption on quasideuterons
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// 20130620 Address Coverity complaint about missing copy actions
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// 20130628 Add function to split dibaryon into particle_kinds list
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// 20141009 M. Kelsey -- Add pion absorption by single nucleons, with
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// nuclear recoil. Improves pi- capture performance.
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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 "G4CascadeFinalStateGenerator.hh"
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#include "G4CascadeInterpolator.hh"
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#include "G4InuclElementaryParticle.hh"
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#include "G4LorentzVector.hh"
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#include <iosfwd>
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#include <vector>
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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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void setNucleusState(G4int a, G4int z) { // Nucleus to use for recoil
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nucleusA = a; nucleusZ = z;
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}
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private:
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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,
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G4InuclElementaryParticle* particle1,
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G4InuclElementaryParticle* particle2);
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// Pion (or photon) absorption on a dibaryon
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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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// Muon absorption on a dibaryon (with outgoing neutrino)
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void generateSCMmuonAbsorption(G4double etot_scm,
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G4InuclElementaryParticle* particle1,
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G4InuclElementaryParticle* particle2);
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// Pion absorption on a single nucleon (charge exchange)
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void generateSCMpionNAbsorption(G4double etot_scm,
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G4InuclElementaryParticle* particle1,
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G4InuclElementaryParticle* particle2);
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G4bool pionNucleonAbsorption(G4double ekin) const;
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void fillOutgoingMasses(); // Fill mass arrays from particle types
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// Utility class to generate final-state kinematics
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G4CascadeFinalStateGenerator fsGenerator;
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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> masses;
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std::vector<G4double> masses2;
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std::vector<G4int> particle_kinds;
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// Nuclear environment (to do pion-nucleon absorption)
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G4int nucleusA, nucleusZ;
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private:
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// Copying of modules is forbidden
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G4ElementaryParticleCollider(const G4ElementaryParticleCollider&);
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G4ElementaryParticleCollider& operator=(const G4ElementaryParticleCollider&);
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};
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#endif /* G4ELEMENTARY_PARTICLE_COLLIDER_HH */
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