GCOMD2Response::bkg_gauss_kernel Class Reference

Inheritance diagram for GCOMD2Response::bkg_gauss_kernel:

Public Member Functions
	bkg_gauss_kernel (const double &ereco, const double &e0, const double &sigma)
double	eval (const double &e)
	Computes Compton background multiplied with Gaussian. More...
Public Member Functions inherited from GFunction
	GFunction (void)
	Void constructor. More...
	GFunction (const GFunction &function)
	Copy constructor. More...
virtual	~GFunction (void)
	Destructor. More...
GFunction &	operator= (const GFunction &function)
	Assignment operator. More...

Protected Attributes
double	m_ereco
double	m_e0
	Incident energy (MeV) More...
double	m_wgt
	Inverse of Gaussian standard deviation (1/MeV) More...

Additional Inherited Members
Protected Member Functions inherited from GFunction
void	init_members (void)
	Initialise class members. More...
void	copy_members (const GFunction &function)
	Copy class members. More...
void	free_members (void)
	Delete class members. More...

Detailed Description

Definition at line 113 of file GCOMD2Response.hpp.

Constructor & Destructor Documentation

GCOMD2Response::bkg_gauss_kernel::bkg_gauss_kernel ( const double &  ereco, const double &  e0, const double &  sigma  )

inline

Definition at line 115 of file GCOMD2Response.hpp.

Member Function Documentation

double GCOMD2Response::bkg_gauss_kernel::eval ( const double &  e )

virtual

Computes Compton background multiplied with Gaussian.

Parameters

[in]

e

Energy (MeV).

Returns

Gaussian kernel value.

Computes a Gaussian kernel value using

\[ B_{\rm c}(E|E',E_0) = \frac{1}{\sigma(E') \sqrt{2\pi}} \exp \left( -\frac{1}{2} \frac{(E-E')^2}{\sigma^2(E')} \right) \]

where \(E'\) is the reconstructed energy, \(\sigma(E')\) is the standard deviation at the reconstructed energy, and \(E\) is the energy over which the convolution is performed.

The code implementation is based on the COMPASS RESRS209 function FUNC2.F (release 1.0, 14-Oct-91).

Implements GFunction.

Definition at line 1099 of file GCOMD2Response.cpp.

References exp(), and gammalib::inv_sqrt2pi.

Member Data Documentation

double GCOMD2Response::bkg_gauss_kernel::m_e0

protected

Incident energy (MeV)

Definition at line 124 of file GCOMD2Response.hpp.

double GCOMD2Response::bkg_gauss_kernel::m_ereco

protected

Definition at line 123 of file GCOMD2Response.hpp.

double GCOMD2Response::bkg_gauss_kernel::m_wgt

protected

Inverse of Gaussian standard deviation (1/MeV)

Definition at line 125 of file GCOMD2Response.hpp.

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

• inst/com/include/GCOMD2Response.hpp
• inst/com/src/GCOMD2Response.cpp