PPSStripOrganization.cc

Go to the documentation of this file.

#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "SimG4CMS/PPS/interface/PPSStripOrganization.h"
#include "DataFormats/CTPPSDetId/interface/TotemRPDetId.h"

#include "G4VPhysicalVolume.hh"
#include "G4VTouchable.hh"
#include "G4Step.hh"

#include <iostream>

uint32_t PPSStripOrganization::unitID(const G4Step* aStep) {
  G4VPhysicalVolume* physVol;
  unsigned int arm = 0;
  unsigned int station = 0;
  unsigned int roman_pot = 0;
  unsigned int detector = 0;

  const G4VTouchable* touch = aStep->GetPreStepPoint()->GetTouchable();

  for (int ii = 0; ii < touch->GetHistoryDepth(); ii++) {
    physVol = touch->GetVolume(ii);
    if (physVol->GetName().contains("RP_Silicon_Detector")) {
      detector = physVol->GetCopyNo();
    } else if (physVol->GetName().contains("RP_box_primary_vacuum")) {
      int cpy_no = physVol->GetCopyNo();
      arm = (cpy_no / 100) % 10;
      station = (cpy_no / 10) % 10;
      roman_pot = cpy_no % 10;
    }
  }
  return TotemRPDetId(arm, station, roman_pot, detector).rawId();
}