Main Page   Namespace List   Class Hierarchy   Compound List   File List   Namespace Members   Compound Members   File Members  

FastShower::HadLateHcalCoreFracEc Class Reference

function to calculate core fraction in ECAL for hadronic Late showers (endcap). More...

#include <HadLateHcalCoreFracEc.h>

Inheritance diagram for FastShower::HadLateHcalCoreFracEc:

Inheritance graph
[legend]
Collaboration diagram for FastShower::HadLateHcalCoreFracEc:

Collaboration graph
[legend]
List of all members.

Private Methods

virtual double value (const ParticleParameters &) const
virtual IFnOfParticleParameters * clone () const

Detailed Description

function to calculate core fraction in ECAL for hadronic Late showers (endcap).

UML: IDistributionClass.unm

Definition at line 25 of file HadLateHcalCoreFracEc.h.

Member Function Documentation

double FastShower::HadLateHcalCoreFracEc::value (  const ParticleParameters &    )  const [private, virtual]
 

Implements FastShower::IFnOfParticleParameters.

Definition at line 13 of file HadLateHcalCoreFracEc.cxx.

References FastShower::ParticleParameters::energy(). 

00013                                                                        {
00014   
00015     double energy = pp.energy();
00016 
00017     double p1 = 469.7*std::exp(-0.9373*energy) + 0.8919;
00018     double p2 = 0.1815*std::exp(-0.1159*energy) + 0.03937;
00019     double p3 = 3.256*std::exp(-0.1970*energy) + 1.085;
00020     double p4 = -0.00003843*std::exp(0.1076*energy) + 0.003032;
00021 
00022     double rndm = RandFlat::shoot();
00023 
00024     double denominator = ( (rndm - p4) > FLT_EPSILON )? (rndm - p4) : FLT_EPSILON;
00025     double result = p1 - p2*std::log(p3/denominator - 1.0);
00026 
00027     result = max(result, 0.01*energy);
00028 
00029     return min(result, 1.0);
00030   }

IFnOfParticleParameters * FastShower::HadLateHcalCoreFracEc::clone (    )  const [private, virtual]
 

Implements FastShower::IFnOfParticleParameters.

Definition at line 32 of file HadLateHcalCoreFracEc.cxx. 

00032                                                               {
00033     return new HadLateHcalCoreFracEc(*this);
00034   }
The documentation for this class was generated from the following files:
Generated on Tue Mar 18 11:56:41 2003 for FastShowerUtils by doxygen1.3-rc1