CbmGeant4Settings.h

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/* Copyright (C) 2020 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Florian Uhlig [committer] */
 
#ifndef CBMGEANT4SETTINGS_H
#define CBMGEANT4SETTINGS_H 1
 
#include "CbmVMCSettings.h"
 
#include <array>
#include <string>
#include <vector>
 
class TVirtualMC;
 
class CbmGeant4Settings : public CbmVMCSettings {
public:
  CbmGeant4Settings()                         = default;
  ~CbmGeant4Settings()                        = default;
  CbmGeant4Settings(const CbmGeant4Settings&) = delete;
  CbmGeant4Settings& operator=(const CbmGeant4Settings&) = delete;
 
  void Init(TVirtualMC*);
 
  void SetG4RunConfig(std::string navigationEngine, std::string physicsLists, std::string specialProcesses)
  {
    fG4RunConfig[0] = navigationEngine;
    fG4RunConfig[1] = physicsLists;
    fG4RunConfig[2] = specialProcesses;
  }
 
  std::array<std::string, 3> GetG4RunConfig() { return fG4RunConfig; }
 
  Int_t GetG4Seed() { return fRandomSeed; }
 
  void SetG4Command(std::string command)
  {
    fG4Commands.clear();
    fG4Commands.push_back(command);
  }
 
  void AddG4Command(std::string command) { fG4Commands.push_back(command); }
 
  std::vector<std::string> GetG4Commands() { return fG4Commands; }
 
  void SetMaximumNumberOfSteps(Int_t numSteps) { fMaxNumSteps = numSteps; }
 
  Int_t GetMaximumNumberOfSteps() { return fMaxNumSteps; }
 
private:
  std::array<std::string, 3> fG4RunConfig {{"geomRoot", "QGSP_BERT_EMV+optical", "stepLimiter"}};
 
  /*
  See https://redmine.cbm.gsi.de/issues/2913
  As of Geant4-10.5 these commands were changed.
  Tested for Geant4-11
  */
  std::vector<std::string> fG4Commands {"/process/optical/verbose 0",
                                        "/process/optical/cerenkov/setMaxPhotons 20",
                                        "/process/optical/cerenkov/setMaxBetaChange 0.1",
                                        "/process/optical/cerenkov/setTrackSecondariesFirst true",
                                        "/process/optical/processActivation Cerenkov true",
                                        "/process/optical/processActivation OpAbsorption true",
                                        "/process/optical/processActivation OpBoundary true"};
 
  Int_t fMaxNumSteps {10000000};
 
  Int_t fRandomSeed {0};
 
  ClassDef(CbmGeant4Settings, 4);
};
 
#endif /* CBMGEANT4SETTINGS_H */