JTRIGGER::JMatch3B< JHit_t > Class Template Reference

3D match criterion with road width. More...

#include <JMatch3B.hh>

Inheritance diagram for JTRIGGER::JMatch3B< JHit_t >:

Public Types
typedef JClass_t *	clone_type
	Type definition of return value of method clone(). More...

Public Member Functions
	JMatch3B (const double road_width_m, const double Tmax_ns=0.0)
	Constructor. More...
JMatch< JHit_t > *	clone () const
	Clone object. More...
virtual bool	operator() (const JHit_t &first, const JHit_t &second) const
	Match operator. More...

Public Attributes
double	roadWidth_m
double	TMaxExtra_ns

Private Attributes
double	D0
double	D1
double	D2
double	x
double	y
double	z
double	d
double	t
double	dmin
double	dmax
double	D02
double	D12
double	D22
double	Rs2
double	Rst
double	Rt
double	R2
double	d2

Detailed Description

template<class JHit_t>
class JTRIGGER::JMatch3B< JHit_t >

3D match criterion with road width.

This match algorithm is intented for muon signals.

B. Bakker, "Trigger studies for the Antares and KM3NeT detector.", Master thesis, University of Amsterdam.

Definition at line 34 of file JMatch3B.hh.

Member Typedef Documentation

template<class JClass_t>

typedef JClass_t* JLANG::JClonable< JClass_t >::clone_type

inherited

Type definition of return value of method clone().

Definition at line 25 of file JClonable.hh.

Constructor & Destructor Documentation

template<class JHit_t>

JTRIGGER::JMatch3B< JHit_t >::JMatch3B ( const double  road_width_m, const double  Tmax_ns = 0.0  )

inline

Constructor.

Parameters

road_width_m	maximal road width [m]
Tmax_ns	maximal extra time [ns]

Definition at line 44 of file JMatch3B.hh.

                                         :
      roadWidth_m (road_width_m),
      TMaxExtra_ns(Tmax_ns)
    {
      //
      // calculation D2 in thesis is wrong, here correct
      //
      const double tt2 = getTanThetaC() * getTanThetaC();

      D0 = roadWidth_m;
      D1 = roadWidth_m * 2.0;
      D2 = roadWidth_m * 0.5 * sqrt(tt2 + 10.0 + 9.0/tt2);

      D02 = D0 * D0;
      D12 = D1 * D1;
      D22 = D2 * D2;

      const double R  = roadWidth_m;
      const double Rs = R * getSinThetaC();

      R2  = R  * R;
      Rs2 = Rs * Rs;
      Rst = Rs * getTanThetaC();
      Rt  = R  * getTanThetaC();
    }

Member Function Documentation

template<class JHit_t>

JMatch<JHit_t>* JTRIGGER::JMatch3B< JHit_t >::clone ( ) const

inlinevirtual

Clone object.

Returns

match result

Implements JLANG::JClonable< JClass_t >.

Definition at line 77 of file JMatch3B.hh.

    {
      return new JMatch3B<JHit_t>(*this);
    }

template<class JHit_t>

virtual bool JTRIGGER::JMatch3B< JHit_t >::operator() ( const JHit_t &  first, const JHit_t &  second  ) const

inlinevirtual

Match operator.

Parameters

first	hit
second	hit

Returns

match result

Implements JTRIGGER::JMatch< JHit_t >.

Definition at line 90 of file JMatch3B.hh.

    {
      x  = first.getX() - second.getX();
      y  = first.getY() - second.getY();
      z  = first.getZ() - second.getZ();
      d2 = x*x + y*y + z*z;
      t  = fabs(first.getT() - second.getT());

      if (d2 < D02)
        dmax = sqrt(d2) * getIndexOfRefraction();
      else 
        dmax = sqrt(d2 - Rs2) + Rst;

      if (t > dmax * getInverseSpeedOfLight()  +  TMaxExtra_ns) {
        return false;
      }

      if      (d2 > D22)
        dmin = sqrt(d2 - R2) - Rt;
      else if (d2 > D12)
        dmin = sqrt(d2 - D12);
      else
        return true;

      return t >= dmin * getInverseSpeedOfLight()  -  TMaxExtra_ns;
    }

Member Data Documentation

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::roadWidth_m

Definition at line 118 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::TMaxExtra_ns

Definition at line 119 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D0

private

Definition at line 122 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D1

private

Definition at line 123 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D2

private

Definition at line 124 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::x

mutableprivate

Definition at line 125 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::y

mutableprivate

Definition at line 126 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::z

mutableprivate

Definition at line 127 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::d

mutableprivate

Definition at line 128 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::t

mutableprivate

Definition at line 129 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::dmin

mutableprivate

Definition at line 130 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::dmax

mutableprivate

Definition at line 131 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D02

private

Definition at line 133 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D12

private

Definition at line 134 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::D22

private

Definition at line 135 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::Rs2

private

Definition at line 136 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::Rst

private

Definition at line 137 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::Rt

private

Definition at line 138 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::R2

private

Definition at line 139 of file JMatch3B.hh.

template<class JHit_t>

double JTRIGGER::JMatch3B< JHit_t >::d2

mutableprivate

Definition at line 140 of file JMatch3B.hh.

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

• JMatch3B.hh