StPmtSignal.h

#ifndef STAR_StPmtSignal
#define STAR_StPmtSignal

// $Id: StPmtSignal.h,v 1.3 2007/09/11 21:49:15 kocolosk Exp $

#include "TNamed.h"
#include "TRandom3.h"

/*****************************************************************************
 * @class StPmtSignal
 * @author V.Rykov -> A.Pavlinov -> A.Suaide -> A.Kocoloski
 *
 * Simulation of the digitized PMT signals with a given number of 
 * photoelectrons emerging from a photocathode, taking into account statistics
 * of secondary electrons and noise.  Use this class by instantiating an
 * object, setting the total gain (ADC counts / photoElectron emitted from
 * cathode) and pedestal properties, and then calling getAdc for a given # of
 * photoelectrons. 
 *****************************************************************************/
class StPmtSignal : public TNamed
{
private:
    static const int mNumDynodes = 11;
    
    float mPmtGain;
    
    float mCathodeNoise;
    
    float mDynodeNoise;
    
    float mTotalGain;
    
    float mPedestalMean;
    
    float mPedestalRMS;
    
    
    float mNodeVoltage[mNumDynodes];
    
    float mSecondaryCoeff[mNumDynodes];
    
    float mDynodeGain[mNumDynodes + 1];
    
    float mG1[mNumDynodes + 1];
    
    float mDNW[mNumDynodes + 1];
    
    TRandom3  mRandom;
    
public:
    StPmtSignal(float pmtGain=1.5e+6, float cathodeNoise=0.0, float dynodeNoise=0.0);
    ~StPmtSignal() { /* Nothing */ }
    
    enum simulatorVersion { kFastSimulator, kFullSimulator };
    
    void setTotalGain(float val) { mTotalGain = val; }
    
    void setPedestalMean(float val) { mPedestalMean = val; }
    
    void setPedestalRMS(float val) { mPedestalRMS = val; }
    
    int getAdc(int nPhotoElectrons, simulatorVersion version);

    ClassDef(StPmtSignal, 2)
};

#endif

/*****************************************************************************
 * $Log: StPmtSignal.h,v $
 * Revision 1.3  2007/09/11 21:49:15  kocolosk
 * complete overhaul of the BEMC simulator
 * http://www.star.bnl.gov/HyperNews-star/get/emc2/2486.html
 *
 *****************************************************************************/