PndDiscNoiseGeneration.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".              *
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//------------------------------------------------------------------------
// Author:      Oliver Merle (Oliver.Merle@exp2.physik.uni-giessen.de)
// Changes:     Mustafa Schmidt (Mustafa.A.Schmidt@physik.uni-giessen.de)
// Date:        30.11.2015
// Description: Class to emulate noise for the readout electronics
//------------------------------------------------------------------------

#ifndef PNDDISCNOISEGENERATION_H
#define PNDDISCNOISEGENERATION_H

#include "TClonesArray.h"

class PndDiscDigitizedHit;

class PndDiscNoiseGeneration {
 public:
  PndDiscNoiseGeneration();
  ~PndDiscNoiseGeneration();

  // Initialization:

  void SetNumberOfSensors(int n_detectors_, int n_readout_modules_, int n_sensors_);
  void SetSensorGrid(double sensor_width_, double sensor_height_, int n_pixel_x_, int n_pixel_y_);
  void SetSensorTiling(int sensor_tiles_x, int sensor_tiles_y);
  void SetPerCellDCR(double dcr_Hz) { dcr_per_pixel = dcr_Hz * 1E-9; }

  // Noise generation and access to noise digits:
  int GenerateNoise(double t_start_ns, double t_end_ns); 
  PndDiscDigitizedHit *GetNextNoiseDigit();              
  void Clear();                                          

 private:
  bool GetPixelPosition(int n_pixel, double &pos_x, double &pos_y);

 protected:
  TClonesArray *noise_digits; 
  int current_index;          

  int n_detectors;       
  int n_readout_modules; 
  int n_sensors;         
  int n_sensor_tiles_x;  
  int n_sensor_tiles_y;  

  double half_sensor_width;
  double half_sensor_height;
  int n_pixel_x;
  int n_pixel_y;
  int n_pixel_total;

  double pitch_x;
  double pitch_y;

  double dcr_per_pixel; // pixel means a single SPAD here - unit: dark counts / ns
};

#endif // PNDDISCNOISEGENERATION_HH_