PndEmcBWEndcapNoiseAdder.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

//#pragma once
#ifndef PNDEMCBWENDCAPNOISEADDER_H_
#define PNDEMCBWENDCAPNOISEADDER_H_

#include "PndEmcAbsWaveformModifier.h"
#include "TString.h"
#include "TRandom.h"

class PndEmcWaveform;
class TVirtualFFT;

class PndEmcBWEndcapNoiseAdder : public PndEmcAbsWaveformModifier 
{
    public:
        PndEmcBWEndcapNoiseAdder();
        ~PndEmcBWEndcapNoiseAdder();
        PndEmcBWEndcapNoiseAdder(Int_t mode, Double_t sampling_rate, const Double_t* ps_freq,
            const Double_t* ps_power, Int_t ps_size, Double_t adc_noise, Double_t fe_noise, 
            Double_t sigma_ps, Double_t sigma_ges, Int_t seed, Int_t verbose); // mode: 0 - full, 1 - reduced, 2 - last

        virtual void  Modify(PndEmcWaveform* wf);

    private:
        Int_t fTraceLength;
        Int_t fBufferPosition;
        Int_t fWaveformLength;
        Int_t fPowerSpecSample;
        Double_t fSamplingRate;
        Double_t fAdcNoise;
        Double_t fFENoise;
        Double_t fSigmaPs;
        Double_t fSigmaGes;
        Double_t fInputScale;
        const Double_t* fPSFreq;
        const Double_t* fPSPower;
        TVirtualFFT* fft;
        Int_t fVerbose;

        Int_t fBufferSize;
        Int_t fPSNoiseMode; // 0 for precision; 1 for speed; 2 for last
        Double_t fBufferUseRate;
        Bool_t fBufferIsEmpty;
        Double_t* fPSNoiseBuffer;
        Double_t* fBandNoiseBuffer;
        Double_t* fFFTFreqBuffer;
        Double_t* fFFTReCoeffBuffer;
        Double_t* fFFTImCoeffBuffer;
        void expand_buffer(Int_t wf_size);

        void get_ps_noise(PndEmcWaveform* wf);
        void generate_ps_noise();
        void generate_band_noise(Double_t min_freq, Double_t max_freq);
        void get_rnd_noise(PndEmcWaveform* wf, Double_t noise);

        ClassDef(PndEmcBWEndcapNoiseAdder, 1)
};

#endif