Test instrument for the updated BF1 butterfly moderator design
Author: Peter Willendrup
Test instrument for the updated BF1 butterfly moderator design.
The below example gives a 50-50 (statistics-wise) cold/thermal beam at beamline N10.
Example: mcrun -n1e6 ESS_butterfly_test.instr sector=N beamline=10 cold=0.5
This variant is set up with time-focusing from the source - for comparison with with ESS_butterfly_tfocus_NOFOCUS_test which runs without focusing from the source.
Parameters in boldface are required;
the others are optional.
Defines the 'sector' of your instrument position. Valid values are "N","S","E" and "W"
Defines the 'beamline number' of your instrument position. Valid values are 1..10 or 1..11 depending on sector