[u/mrichter/AliRoot.git] / EVGEN / AliGenGrayParticles.h

#ifndef ALIGENGRAYPARTICLES_H
#define ALIGENGRAYPARTICLES_H
/* Copyright(c) 198-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */

#include "AliGenerator.h"
class AliGrayParticleModel;

class AliGenGrayParticles : public AliGenerator
{
public:
    AliGenGrayParticles();
    AliGenGrayParticles(Int_t npart);
    virtual ~AliGenGrayParticles();
    virtual void Init();
    virtual void Generate();
    virtual void SetPmax(Float_t pmax = 10.) {fPmax = pmax;}
    virtual void SetNominalCmsEnergy(Float_t energy = 14000.) {fCMS = energy;}
    virtual void SetTarget(Float_t a=208, Float_t z=82) {fATarget = a; fZTarget = z;}
    virtual void SetCharge(Int_t c = 1) {fCharge = c;}
    virtual void SetTemperature(Double_t t = 0.05) {fTemperature = t;}
    virtual void SetBetaSource(Double_t b = 0.05) {fBetaSource = b;}
    //
    virtual void SetGrayParticleModel(AliGrayParticleModel* model) 
	{fGrayParticleModel = model;}
    virtual Bool_t NeedsCollisionGeometry() {return kTRUE;}
    virtual void   SetCollisionGeometry(AliCollisionGeometry* geom)
	{fCollisionGeometry = geom;}
	    
 protected:
    void     GenerateSlow(Int_t charge, Double_t T, Double_t beta, Float_t* q);
    Double_t Maxwell(Double_t m, Double_t p, Double_t t);
    void     Lorentz(Double_t m, Double_t beta, Float_t* q);
 protected:
    Float_t  fCMS;         // Center of mass energy
    Float_t  fMomentum;    // Target nucleus momentum
    Float_t  fBeta;        // Target nucleus beta
    Float_t  fPmax;        // Maximum slow nucleon momentum
    Float_t  fATarget;     // Target nucleus mass number
    Float_t  fZTarget;     // Target nucleus charge number
    Int_t    fCharge;      // Slow nucleon charge
    Float_t  fTemperature; // Source Temperature
    Float_t  fBetaSource;  // Source beta
    //
    AliGrayParticleModel* fGrayParticleModel; // The gray particle model
  ClassDef(AliGenGrayParticles,1) // Gray Particle Generator
};
#endif
Commit	Line	Data
930c0bb5	1	#ifndef ALIGENGRAYPARTICLES_H
	2	#define ALIGENGRAYPARTICLES_H
	3	/* Copyright(c) 198-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	/* $Id$ */
	7
	8	#include "AliGenerator.h"
c27c8b4d	9	class AliGrayParticleModel;
930c0bb5	10
	11	class AliGenGrayParticles : public AliGenerator
	12	{
	13	public:
	14	AliGenGrayParticles();
	15	AliGenGrayParticles(Int_t npart);
	16	virtual ~AliGenGrayParticles();
	17	virtual void Init();
	18	virtual void Generate();
	19	virtual void SetPmax(Float_t pmax = 10.) {fPmax = pmax;}
	20	virtual void SetNominalCmsEnergy(Float_t energy = 14000.) {fCMS = energy;}
	21	virtual void SetTarget(Float_t a=208, Float_t z=82) {fATarget = a; fZTarget = z;}
ca33591a	22	virtual void SetCharge(Int_t c = 1) {fCharge = c;}
930c0bb5	23	virtual void SetTemperature(Double_t t = 0.05) {fTemperature = t;}
ca33591a	24	virtual void SetBetaSource(Double_t b = 0.05) {fBetaSource = b;}
c27c8b4d	25	//
	26	virtual void SetGrayParticleModel(AliGrayParticleModel* model)
	27	{fGrayParticleModel = model;}
8b87aa60	28	virtual Bool_t NeedsCollisionGeometry() {return kTRUE;}
	29	virtual void SetCollisionGeometry(AliCollisionGeometry* geom)
	30	{fCollisionGeometry = geom;}
c27c8b4d	31
930c0bb5	32	protected:
	33	void GenerateSlow(Int_t charge, Double_t T, Double_t beta, Float_t* q);
	34	Double_t Maxwell(Double_t m, Double_t p, Double_t t);
	35	void Lorentz(Double_t m, Double_t beta, Float_t* q);
	36	protected:
	37	Float_t fCMS; // Center of mass energy
	38	Float_t fMomentum; // Target nucleus momentum
	39	Float_t fBeta; // Target nucleus beta
	40	Float_t fPmax; // Maximum slow nucleon momentum
	41	Float_t fATarget; // Target nucleus mass number
	42	Float_t fZTarget; // Target nucleus charge number
ca33591a	43	Int_t fCharge; // Slow nucleon charge
930c0bb5	44	Float_t fTemperature; // Source Temperature
ca33591a	45	Float_t fBetaSource; // Source beta
c27c8b4d	46	//
c27c8b4d	47	AliGrayParticleModel* fGrayParticleModel; // The gray particle model
930c0bb5	48	ClassDef(AliGenGrayParticles,1) // Gray Particle Generator
	49	};
	50	#endif
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