00001 # GPS Cobalt60 source
00002 #
00003 # Introduction:
00004 # 60Co emits 2 gammas in coincidence, one of 1.33 MeV and one of 1.17 MeV energy
00005 # In many cases, "pile-up" of these 2 photons in the detector in a single event
00006 # can be neglected. Examples are:
00007 # - if the detector is reasonably far from the 60Co source
00008 # - if no "event-by-event" analysis is needed (only cumulative effects are studied)
00009 # In this cases, the source can be described as 2 separate sources: one at 1.33 MeV,
00010 # the other at 1.17 MeV
00011 #
00012 # There are 2 options for the modelling of the source:
00013 # 1. The 2 gamma lines can be modelled separately.
00014 # The simulations results can be combined as post-processing
00015 # 2. The 2 gamma lines can be modelled together.
00016 # GPS will randonly select one or the other, depending on the relative intensity
00017 #
00018 # Description:
00019 # - Point source, centred in (0.,35.,0.) cm
00020 # - Monoenergetic lines: 1.17 MeV or 1.33 MeV
00021 # - Isotropic emission, 4PI
00022
00023 # Modelling of 2 sources in parallel for the 2 gamma lines here:
00024
00025 # First 60Co line at 1.17 MeV
00026
00027 # Particle type
00028
00029
00030 # Energy
00031
00032
00033 # Position
00034
00035
00036 # Angular distribution:
00037
00038
00039
00040 /gps/source/intensity 1.
00041
00042 # Second 60Co line at 1.33 MeV
00043
00044 /gps/source/add 1.
00045
00046 # Particle type
00047
00048
00049 # Energy
00050
00051
00052 # Position
00053
00054
00055 # Angular distribution:
00056
00057
00058
00059 # Advanced visualisation
00060 /control/execute vis_cobalt60_2sources.g4mac
00061
00062 #
