72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//*
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// LOW ENERGY MUON SPIN RELAXATION, ROTATION, RADIATION
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//
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// ID : LEMuSRParticleGun.hh , v 1.2
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// AUTHOR: Taofiq PARAISO
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// DATE : 2004-08-20 10:48
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
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//
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// & &&&&&&&&&& &&&&&&& &&&&&&&&
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// & & && && & &&
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// & & & & & & &&
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// & &&&&&&& & & &&&&&& &&&&&&&&
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// & & & && & & &&
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// & & && & & && && & &
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// &&&&&&&&&& &&&&&&&&&& & &&&&& && &&&&&&& & &&
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// &
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// &
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// &
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// &
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// PARTICLE GUN
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
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#ifndef LEMuSRParticleGun_h
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#define LEMuSRParticleGun_h 1
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#include "G4ParticleGun.hh"
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#include "G4Event.hh"
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#include "G4PrimaryParticle.hh"
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class LEMuSRParticleGunMessenger;
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#include"G4ParticleGunMessenger.hh"
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/*!
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* The LEMuSRParticleGun is the class which stores the initial settings of the particles.
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* Its interplay with the LEMuSRPrimaryGeneratorAction (PGA) is very strong.
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* Indeed, the particle gun object is instanciated and initialized in the PGA.
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*
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* After this initialization, the PGA calls the particle gun's GeneratePrimaryVertex method
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* to create an event with the defined initial conditions.
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*
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* As an image one can think that the PGA loads the gun with some defined particles,
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* set the shooting energy, aims and fires. Hence the name.
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*/
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class LEMuSRParticleGun: public G4ParticleGun
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{
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public:
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//!\ct
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LEMuSRParticleGun();
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//!\dt
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~LEMuSRParticleGun();
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//! Creates the first event.
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void GeneratePrimaryVertex(G4Event* evt);
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//! Assign a decay time
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inline void SetDecayTime(G4double d) {decaytime = d;}
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G4double decaytime;
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protected:
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//! Default initialization of the gun.
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void SetInitialValues();
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private:
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//! Messenger
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LEMuSRParticleGunMessenger* theMessenger;
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};
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#endif
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