Edit examples.md

`IOXYZ.volumeselection.0.end = 1000000000`

Number of rows for each file:

`IOXYZ.NRows  = 5000000`

----> Physics list:

Name of the physics class:

`PHYS.VERSION = OPTPhys`

Production cut applied to all volumes in the simulation:

including the rotation of the target, can be adapted at runtime

using the configuration file.

The example selects the Geant4 reference single scattering electromagnetic physics list (emstandardSS_QBBC) but the [AREMBESPhys](https://www.ict.inaf.it/gitlab/icsc_g4_hpc/BoGEMMS-HPC/-/blob/main/phys/AREMBESPhys.cc?ref_type=heads) general physics list allows the user to select other options, for which custom user limits could be required.

To run the example: 

`> bogemms -c ProtonScattering.conf -m sp_300keV.mac`

###### Configuration file ProtonScattering.conf:

Selection of output files:

`IO.FILETYPE.FITS = true`

`IO.FILETYPE.FITS.COMPRESS = true`

`IO.FILE.XYZ = true`

IO XYZ file configuration:

`IOXYZ.EVT_ID = true`

`IOXYZ.TRK_ID = true`

`IOXYZ.PARENT_TRK_ID = true`

`IOXYZ.VOLUME_ID = true`

`IOXYZ.VOLUME_NAME = true`

`IOXYZ.MOTHER_ID = true`

`IOXYZ.E_DEP = true`

`IOXYZ.X_ENT = true`

`IOXYZ.Y_ENT = true`

`IOXYZ.Z_ENT = true`

`IOXYZ.X_EXIT = true`

`IOXYZ.Y_EXIT = true`

`IOXYZ.Z_EXIT = true`

`IOXYZ.E_KIN_ENT = true`

`IOXYZ.E_KIN_EXIT = true`

`IOXYZ.MDX_ENT = true`

`IOXYZ.MDY_ENT = true`

`IOXYZ.MDZ_ENT = true`

`IOXYZ.MDX_EXIT = true`

`IOXYZ.MDY_EXIT = true`

`IOXYZ.MDZ_EXIT = true`

`IOXYZ.GTIME_ENT = true`

`IOXYZ.GTIME_EXIT = true`

`IOXYZ.PARTICLE_ID = true`

`IOXYZ.PARTICLE_NAME = false`

`IOXYZ.PROCESS_ID = true`

`IOXYZ.PROCESS_NAME = false`

Volume selection:

`IOXYZ.volumeselection.number = 1`

`IOXYZ.volumeselection.0.start = 0`

`IOXYZ.volumeselection.0.end = 10000000`

Number of rows for each file:

`IOXYZ.NRows  = 5000000`

Write only volume with energy deposit (this do not exclude the world):

`IOXYZ.writeonlyifenergydeposit = 0`

Exclude the world (NB: the world contains the initial energy and momentum):

`IOXYZ.removeWorldEvent = 0`

Volume ID handling (# 1 = summing mother and grandmother ID in case of replicas):

`GEOM.VOLID.TYPE = 1`

Multithreading:

`MT.NUM.THREADS = 1`

----> Physics list:

Name of the physics class:

`PHYS.VERSION = AREMBESPhys`

Options:

`AREMBESPhys.PHYSLIST = emstandardSS_QBBC`

`AREMBESPhys.DEFAULT.CUT = 0.001`

Activating SS EM parameters:

`AREMBESPhys.SSPHYS.ACTIVATE = 1`

User limit (activating the custom user limit to the target, to be used in multiple scattering is chosen instead of SS):

`AREMBESPhys.STEPLIMITER.ACTIVATE = 0`

Region cuts applied to the target:

`REGION.TARGET.CUT = 0.000001`

`REGION.TARGET.PROTON.CUT = 0.000001`

Maximum step limiter (if step limiter is activated):

`GEOM.MAXSTEP = 0.00000001`

----> Geometry configuration:

Setting the world dimension [mm]:

`WORLD.BOX.SIDE = 5000`

Name of the geometry class:

`GEOM.VERSION = ProtonScattering`

Experiment type 1 (target and detector)

`GEOM.EXPERIMENT = 1`

`GEOM.MAXSTEP = 0.1`

# selecting the chamber material

GEOM.VACUUM = 1

# collimator distance (from right side to target center) in mm

GEOM.COLLIMATOR.DISTANCE = 87.

##### TARGET

# target type: 1 = eRosita

GEOM.TARGET = 1

GEOM.INCIDENT.ANGLE = 0.64

# detector distance (distance from the target center to the detector surface) in mm

GEOM.PANEL.DISTANCE = 933.

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