JMARKOV::JPMTTarget Class Reference

Implementation of the JTargetModel class that represents a single PMT on a DOM. More...

#include <JScatteringModel.hh>

Inheritance diagram for JMARKOV::JPMTTarget:

Public Member Functions
	JPMTTarget (JAxis3D _axis, double _alpha, double _r=0.2159)
	Constructor. More...
double	getOpeningAngle () const
	return the PMT opening angle in radians More...
double	getEfficiency (JVersor3D dir) const
	Return the efficiency, which is defined as the probability that a photon with the given direction hitting the target will be registered. More...
double	getEffectiveArea () const
virtual double	getEffectiveArea ()
	Return the effective area, i.e. More...
void	setRadius (double _r)
double	getRadius () const
void	setPosition (JPosition3D &_pos)
const JPosition3D &	getPosition () const
void	setDirection (JVersor3D &_dir)
const JVersor3D &	getDirection () const

Public Attributes
double	ctmin

Protected Attributes
double	alpha
double	r
JAxis3D	axis

Detailed Description

Implementation of the JTargetModel class that represents a single PMT on a DOM.

Definition at line 320 of file JScatteringModel.hh.

Constructor & Destructor Documentation

JMARKOV::JPMTTarget::JPMTTarget ( JAxis3D  _axis, double  _alpha, double  _r = 0.2159  )

inline

Constructor.

_r is DOM radius, default = 0.2159 [m] (=17 inch diameter glass sphere)

_alpha is the opening angle in radians

Definition at line 330 of file JScatteringModel.hh.

                                                                 {
      setRadius(_r) ;
      axis = _axis ;
      alpha = _alpha ;

      // minimal dot product of PMT direction vs hit direction on DOM
      ctmin = cos(0.5*_alpha) ;
    }

Member Function Documentation

double JMARKOV::JPMTTarget::getOpeningAngle ( ) const

inline

return the PMT opening angle in radians

Definition at line 340 of file JScatteringModel.hh.

{ return alpha ; }

double JMARKOV::JPMTTarget::getEfficiency ( JVersor3D  dir ) const

inlinevirtual

Return the efficiency, which is defined as the probability that a photon with the given direction hitting the target will be registered.

Note that we assume by convention that the direction is the PHOTON direction, NOT the direction that you would see the photon coming from!

By convention the highest efficiency is 1.

Implements JMARKOV::JTargetModel.

Definition at line 342 of file JScatteringModel.hh.

                                                {
      const double ct = axis.getDirection().getDot(dir) ;
      if( ct > ctmin ) {
        return 1.0 ;
      } else {
        return 0.0 ;
      }
    }

double JMARKOV::JPMTTarget::getEffectiveArea ( ) const

inline

Definition at line 351 of file JScatteringModel.hh.

                                    { 
      return 2.0*r*r*M_PI*(1-ctmin) ; 
    }

virtual double JMARKOV::JTargetModel::getEffectiveArea ( )

inlinevirtualinherited

Return the effective area, i.e.

the integral over the whole surface of the target, weighted by the efficiency.

Definition at line 296 of file JScatteringModel.hh.

{ return 0.0 ; }

void JMARKOV::JTargetModel::setRadius ( double  _r )

inlineinherited

Definition at line 299 of file JScatteringModel.hh.

{ r = _r ; }

double JMARKOV::JTargetModel::getRadius ( ) const

inlineinherited

Definition at line 302 of file JScatteringModel.hh.

{ return r ; }

void JMARKOV::JTargetModel::setPosition ( JPosition3D &  _pos )

inlineinherited

Definition at line 304 of file JScatteringModel.hh.

{ axis = JAxis3D(_pos,axis.getDirection()) ; }

const JPosition3D& JMARKOV::JTargetModel::getPosition ( ) const

inlineinherited

Definition at line 305 of file JScatteringModel.hh.

{ return axis.getPosition() ; }

void JMARKOV::JTargetModel::setDirection ( JVersor3D &  _dir )

inlineinherited

Definition at line 307 of file JScatteringModel.hh.

{ axis = JAxis3D(axis.getPosition(),_dir) ; }

const JVersor3D& JMARKOV::JTargetModel::getDirection ( ) const

inlineinherited

Definition at line 308 of file JScatteringModel.hh.

{ return axis.getDirection() ; }

Member Data Documentation

double JMARKOV::JPMTTarget::ctmin

Definition at line 355 of file JScatteringModel.hh.

double JMARKOV::JPMTTarget::alpha

protected

Definition at line 359 of file JScatteringModel.hh.

double JMARKOV::JTargetModel::r

protectedinherited

Definition at line 312 of file JScatteringModel.hh.

JAxis3D JMARKOV::JTargetModel::axis

protectedinherited

Definition at line 313 of file JScatteringModel.hh.

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

• JScatteringModel.hh