class AliFemtoCoulomb


AliFemtoCoulomb: This is a Coulomb correction class which
1. Reads in the dat from a file
2. Performs a linear interpolation in R and creates any array of
interpolations
3. Interpolates in eta and returns the Coulomb correction to user

Function Members (Methods)

public:

	AliFemtoCoulomb()
	AliFemtoCoulomb(const AliFemtoCoulomb& aCoul)
	AliFemtoCoulomb(const char* readFile, const double& radius, const double& charge)
virtual	~AliFemtoCoulomb()
TH1D*	CorrectionHistogram(const double& mass1, const double& mass2, const int& nBins, const double& low, const double& high)
double	CoulombCorrect(const double& eta)
double	CoulombCorrect(const AliFemtoPair* pair)
double	CoulombCorrect(const double& eta, const double& radius)
double	CoulombCorrect(const AliFemtoPair* pair, const double& radius)
double	CoulombCorrect(const double& mass, const double& charge, const double& radius, const double& qInv)
double	GetRadius() const
AliFemtoCoulomb&	operator=(const AliFemtoCoulomb& aCoul)
void	SetChargeProduct(const double& charge)
void	SetFile(const char* readFile)
void	SetRadius(const double& radius)

private:

void	CreateLookupTable(const double& radius)
double	Eta(const AliFemtoPair* pair)

Data Members

private:

double	fCoulomb[1000]	interpolated Coulomb correction table
double	fEta[1000]	interpolated Coulomb correction table
const char*	fFile	File to interpolate corrections from
int	fNLines	Number of Eta's in lookup-table
double	fRadius	Radius from previous iteration
double	fZ1Z2	Charge product of particles

Class Charts

Inheritance Chart:

AliFemtoCoulomb

Function documentation

AliFemtoCoulomb()

 Default constructor

AliFemtoCoulomb(const AliFemtoCoulomb& aCoul)

 copy constructor

AliFemtoCoulomb(const char* readFile, const double& radius, const double& charge)

 constructor with explicit filename

~AliFemtoCoulomb()

 destructor

AliFemtoCoulomb& operator=(const AliFemtoCoulomb& aCoul)

 assignment operator

void SetRadius(const double& radius)

 set the coulomb radius

double GetRadius() const

 return coulomb radius

void SetFile(const char* readFile)

 set the filename with coulomb calculations

void SetChargeProduct(const double& charge)

 set pair charge

void CreateLookupTable(const double& radius)

 Read radii from fFile
 Create array(pair) of linear interpolation between radii

double CoulombCorrect(const double& eta)

 Interpolates in eta

double CoulombCorrect(const double& eta, const double& radius)

 Checks radii ... input radius and fRadius
 Calls createLookupTable if neccessary
 Interpolate(linear) between etas in the created lookup table

double CoulombCorrect(const AliFemtoPair* pair)

double CoulombCorrect(const AliFemtoPair* pair, const double& radius)

double Eta(const AliFemtoPair* pair)

 calculate eta

TH1D* CorrectionHistogram(const double& mass1, const double& mass2, const int& nBins, const double& low, const double& high)

 return correction histogram

double CoulombCorrect(const double& mass, const double& charge, const double& radius, const double& qInv)

 return correction factor