RPTopology.cc

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/****************************************************************************
*
* This is a part of TotemDQM and TOTEM offline software.
* Authors:
*   Hubert Niewiadomski
*   Jan Kašpar (jan.kaspar@gmail.com)
*
****************************************************************************/
 
#include "Geometry/VeryForwardRPTopology/interface/RPTopology.h"
#include <iostream>
 
const unsigned short RPTopology::no_of_strips_ = 512;
 
const double RPTopology::sqrt_2 = std::sqrt(2.0);
// all in mm
const double RPTopology::pitch_ = 66E-3;
const double RPTopology::thickness_ = 0.3;
const double RPTopology::x_width_ = 36.07;
const double RPTopology::y_width_ = 36.07;
const double RPTopology::phys_edge_lenght_ =
    22.276;  //correct, but of vague impact, check sensitive edge efficiency curve
const double RPTopology::last_strip_to_border_dist_ = 1.4175;
const double RPTopology::last_strip_to_center_dist_ =
    RPTopology::x_width_ / 2. - RPTopology::last_strip_to_border_dist_;  // assumes square shape
 
RPTopology::RPTopology() : strip_readout_direction_(0, 1, 0), strip_direction_(1, 0, 0), normal_direction_(0, 0, 1) {}
 
bool RPTopology::IsHit(double u, double v, double insensitiveMargin) {
  // assumes square shape
 
  if (fabs(u) > last_strip_to_center_dist_)
    return false;
 
  if (fabs(v) > last_strip_to_center_dist_)
    return false;
 
  double y = (u + v) / sqrt_2;
  double edge_to_ceter_dist = (x_width_ - phys_edge_lenght_ / sqrt_2) / sqrt_2 - insensitiveMargin;
  if (y < -edge_to_ceter_dist)
    return false;
 
  return true;
}