PndSdsFEAmpModelSimple.cxx

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/*
 * SdsFEAmpModelSimple.cpp
 *
 *  Created on: Apr 4, 2011
 *      Author: esch
 */

#include "PndSdsFEAmpModelSimple.h"
#include "TMath.h"

PndSdsFEAmpModelSimple::PndSdsFEAmpModelSimple(): fModelNumber(1) {
}

PndSdsFEAmpModelSimple::~PndSdsFEAmpModelSimple() {
}

double PndSdsFEAmpModelSimple::Definition(double * x, double *params)  {

        // params[0] = charge time [ns]
        // params[1] = constant current to discharge the capacitor of the amplifier [e/ns]
        // params[2] = charge [e]

        if( *x <= 0 )
          {
            return 0;
          }
         else if (*x <= params[0])
           {
             return *x * params[2] / params[0];
           }
         else
           {
             return TMath::Max( params[2]- ((*x- params[0])* params[1]),0.0);
           }
}

int PndSdsFEAmpModelSimple::GetModelNumber(){

        return fModelNumber;
}