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# README for APEXG4MC 

# Building APEXG4MC
> mkdir build
> cd build
> cmake ../ (or cmake3 ../)
> make -jX (X specifies number of cores to use)

# Running the simulation in visualisation mode
./APEXG4MC
> then in the gui, /control/execute macros/vis_apex.mac

# Running the simulation in batch mode
./APEXG4MC macros/batch_apex.mac

# Detector options (in macros/DetectorSetup.mac)
  /APEXG4MC/detector/HRSAngle 12.5
  Set the HRS angle in degrees.

  /APEXG4MC/detector/HRSMomentum 1.063
  Set the HRS central momentum in GeV/c.
  
  /APEXG4MC/detector/DistTarPivot 105.29
  Set the distance between centre of scattering chamber and hall pivot in cm.

  /APEXG4MC/detector/DistPivotQ1 159.03
  Set the distance between hall pivot and Q1 entrance in cm.

  /APEXG4MC/detector/SeptumFieldScale 1.05
  Set the septum field scale (from nominal central momentum).

  /APEXG4MC/detector/SeptumFieldMap Septa-JB_map.table
  Set the full name and path of the septum field map.

  /APEXG4MC/detector/SieveOn false
  Set the sieve slit in or out (true or false).

  /APEXG4MC/detector/SieveAngle 5.0
  Set the sieve slit angle in degrees.

  /APEXG4MC/detector/SieveReal false
  If this is set to true particles will be tracked in the sieve slit volume (slow).

  /APEXG4MC/detector/Target ProdW
  Set the target type (ProdW, ProdC, Optics1, Optics2, Optics3, VWires or HWires).

# PhysicsList options (in main control macro before /run/initialize)
  /APEXG4MC/physics/setCuts 0.1 mm
  Set cut for all particle types.

  /APEXG4MC/physics/addPhysics QGSP_BIC_EMY
  Add physics list (standard_opt3, LowE_Livermore, LowE_Penelope, QGSP_BIC_EMY, QGSP_BIS_HP,
  QGSP_BERT_HP, FTFP_BERT_HP)

# Analysis options (in main control macro)
  /APEXG4MC/analysis/setOutputFile
  Set the full name and path of the output file.

# Generator options (in main control macro)
  /APEXG4MC/generator/Mode 1
  Set the mode of the generator (0 for GPS or 1 for APEX).

  /APEXG4MC/generator/BeamEnergy 2.2
  Set the beam energy GeV.

  /APEXG4MC/generator/RasterX 2.0
  Set the beam x raster in mm.

  /APEXG4MC/generator/RasterY 2.0
  Set the beam y raster in mm.

  /APEXG4MC/generator/ThMin 2.0
  Set the minimum polar angle for the electron in degrees.

  /APEXG4MC/generator/ThMax 8.0
  Set the maximum polar angle for the electron in degrees.

  /APEXG4MC/generator/PhMin -5.0
  Set the minimum azimuthal angle for the electron in degrees.

  /APEXG4MC/generator/PhMax 5.0
  Set the maximum azimuthal angle for the electron in degrees.

  /APEXG4MC/generator/DeltaRange 0.2
  Set the generated range in delta (absolute).