JPHYSICS::JGeane_t Class Reference

Function object for the energy loss of the muon. More...

#include <JGeane.hh>

Inheritance diagram for JPHYSICS::JGeane_t:

Public Member Functions
	JGeane_t (const double __a, const double __b)
	constructor More...
virtual double	getA () const
	Get energy loss constant. More...
virtual double	getB () const
	Get energy loss constant. More...
virtual double	getE (const double E, const double dx) const
	Get energy of muon after specified distance. More...
virtual double	getX (const double E0, const double E1) const
	Get distance traveled by muon. More...
double	operator() (const double E, const double dx) const
	Energy of muon after specified distance. More...
double	operator() (const double E) const
	Range of muon. More...
double	operator() () const
	Equivalent unit track length per unit shower energy and per unit track length. More...

Protected Attributes
const double	a
const double	b

Detailed Description

Function object for the energy loss of the muon.

The energy loss can be formulated as:

N.B: and are assumed constant (internal units m and GeV, respectively).

Definition at line 127 of file JGeane.hh.

Constructor & Destructor Documentation

JPHYSICS::JGeane_t::JGeane_t ( const double  __a, const double  __b  )

inline

constructor

Parameters

__a	Energy loss due to ionisation [GeV/m]
__b	Energy loss due to pair production and Bremstrahlung [m^-1]

Definition at line 136 of file JGeane.hh.

                               :
      a(__a),
      b(__b)
    {}

Member Function Documentation

virtual double JPHYSICS::JGeane_t::getA ( ) const

inlinevirtual

Get energy loss constant.

Returns

Energy loss due to ionisation [GeV/m]

Implements JPHYSICS::JGeane.

Definition at line 148 of file JGeane.hh.

    {
      return a;
    }

virtual double JPHYSICS::JGeane_t::getB ( ) const

inlinevirtual

Get energy loss constant.

Returns

Energy loss due to pair production and Bremstrahlung [m^-1]

Implements JPHYSICS::JGeane.

Definition at line 159 of file JGeane.hh.

    {
      return b;
    }

virtual double JPHYSICS::JGeane_t::getE ( const double  E, const double  dx  ) const

inlinevirtual

Get energy of muon after specified distance.

Parameters

E	Energy of muon [GeV]
dx	distance traveled [m]

Returns

Energy of muon [GeV]

Implements JPHYSICS::JGeane.

Definition at line 172 of file JGeane.hh.

    {
      const double y = (a/b + E) * exp(-b*dx)  -  a/b;

      if (y > 0.0)
        return y;
      else
        return 0.0;
    }

virtual double JPHYSICS::JGeane_t::getX ( const double  E0, const double  E1  ) const

inlinevirtual

Get distance traveled by muon.

Parameters

E0	Energy of muon at start [GeV]
E1	Energy of muon at end [GeV]

Returns

distance traveled [m]

Implements JPHYSICS::JGeane.

Definition at line 190 of file JGeane.hh.

    {
      return -log((a + b*E1) / (a+b*E0)) / b;
    }

double JPHYSICS::JGeane::operator() ( const double  E, const double  dx  ) const

inlineinherited

Energy of muon after specified distance.

Parameters

E	Energy of muon [GeV]
dx	distance traveled [m]

Returns

Energy of muon [GeV]

Definition at line 88 of file JGeane.hh.

    {
      return this->getE(E, dx);
    }

double JPHYSICS::JGeane::operator() ( const double  E ) const

inlineinherited

Range of muon.

Parameters

E	Energy of muon [GeV]

Returns

range [m]

Definition at line 100 of file JGeane.hh.

    {
      return this->getX(E, 0.0);
    }

double JPHYSICS::JGeane::operator() ( ) const

inlineinherited

Equivalent unit track length per unit shower energy and per unit track length.

Returns

equivalent unit track length [Gev^-1]

Definition at line 111 of file JGeane.hh.

    {
      return this->getB() * geanc();
    }

Member Data Documentation

const double JPHYSICS::JGeane_t::a

protected

Definition at line 197 of file JGeane.hh.

const double JPHYSICS::JGeane_t::b

protected

Definition at line 198 of file JGeane.hh.

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The documentation for this class was generated from the following file:

• JGeane.hh