- edited description
--optics Option
Several options are required to be set correctly in order to create a suitable optical comparison between a BDSIM model and an optical description of a machine such as MADX. We should provide a simple executable option that sets all of these options to avoid incorrect comparisons.
Options to be set:
- stopTracks=1
- em physics to allow particles to interact with matter, ie be killed with stopTracks
- strong physics cuts to prevent secondaries should they arise
- build geometry with open collimators
- build geometry with increased aperture
- use apertureType="circularvacuum" - faster tracking; aperture still increased to extend applicable field region
- sample, all;
We also have the possibility of storing a special optics structure in the output that would be more optimised (reduced analysis time) - perhaps all events per sampler (sampler as 'entry' in ROOT file) rather than general all samplers per event. Optics is a special case where we have a very large number of samplers unlike conventional physics studies.
Comments (2)
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reporter -
strong physics cuts to prevent secondaries should they arise
one can use
option, stopSecondaries = 1;
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