SimParams.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef O2_SIMCONFIG_SIMPARAM_H_
#define O2_SIMCONFIG_SIMPARAM_H_
 
#include "CommonUtils/ConfigurableParam.h"
#include "CommonUtils/ConfigurableParamHelper.h"
 
namespace o2
{
namespace conf
{
// parameters to influence/set the tracking cuts in simulation
// (mostly used in O2MCApplication stepping)
struct SimCutParams : public o2::conf::ConfigurableParamHelper<SimCutParams> {
  bool stepFiltering = true; // if we activate the step filtering in O2BaseMCApplication
  std::string stepFilteringMacro = "";                                                                        // ROOT macro providing keepStep(); empty = built-in z/R cut
  bool stepTrackRefHook = false;                                                                              // if we create track references during generic stepping
  std::string stepTrackRefHookFile = "${O2_ROOT}/share/Detectors/gconfig/StandardSteppingTrackRefHook.macro"; // the standard code holding the TrackRef callback
 
  bool trackSeed = false;    // per track seeding for track-reproducible mode
 
  double maxRTracking = 1E20;    // max R tracking cut in cm (in the VMC sense) -- applied in addition to cutting in the stepping function
  double maxAbsZTracking = 1E20; // max |Z| tracking cut in cm (in the VMC sense) -- applied in addition to cutting in the stepping function
  double ZmaxA = 1E20;           // max Z tracking cut on A side in cm -- applied in our custom stepping function
  double ZmaxC = 1E20;           // max Z tracking cut on C side in cm -- applied in out custom stepping function
 
  float maxRTrackingZDC = 50; // R-cut applied in the tunnel leading to ZDC when z > beampipeZ (custom stepping function)
  float tunnelZ = 1900;       // Z-value from where we apply maxRTrackingZDC (default value taken from standard "hall" dimensions)
 
  bool lowneut = false;
  O2ParamDef(SimCutParams, "SimCutParams");
};
 
// parameter influencing material manager
struct SimMaterialParams : public o2::conf::ConfigurableParamHelper<SimMaterialParams> {
  // Local density value takes precedence over global density value, i.e. local values overwrite the global value.
  float globalDensityFactor = 1.f; // global factor that scales all material densities for systematic studies
  // String to set densities on module or material level. Expected format:
  // "SimMaterialParams.localDensityFactor=<mod1/matname>:<value1>,<mod2>:<value2>,..."
  // Example: "SimMaterialParams.localDensityFactor=TPC/Air:1.2,ITS:5." will scale the density of the Air in TPC
  //           with 1.2 and to 5.0 for all materials in ITS".
  std::string localDensityFactor;
 
  O2ParamDef(SimMaterialParams, "SimMaterialParams");
};
 
} // namespace conf
} // namespace o2
 
#endif /* O2_SIMCONFIG_SIMCUTPARAM_H_ */