[ Identification | Description | Input parameters | Output parameters | Links ]

The ESS_butterfly_test Instrument

Test instrument for the updated BF1 butterfly moderator design using MCPL input

Identification

Description

Test instrument for the updated BF1 butterfly moderator design using MCPL input files.

The below example gives a 50-50 (statistics-wise) cold/thermal beam at beamline N10.
Example: mcrun -n1e6 ESS_butterfly_MCPL_test.instr sector=N beamline=10 cold=0.5

Assumes access to binary MCPL datasets in . named [sector][beamline].mcpl.gz, i.e. W8.mcpl.gz.

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
sector str Defines the 'sector' of your instrument position. Valid values are "N","S","E" and "W" "N"
beamline 1 Defines the 'beamline number' of your instrument position. Valid values are 1..10 or 1..11 depending on sector 1
Lmin AA Minimum wavelength simulated 0.2
Lmax AA Maximum wavelength simulated 20
c_performance 1 Cold brilliance scalar performance multiplicator c_performance > 0 1
t_performance 1 Thermal brilliance scalar performance multiplicator t_performance > 0 1
index 1 Target index for source focusing. Defaults to illuminate the "cold collimated" brilliance monitor, thereby suppressing "dist" 8
dist m Distance from origin to focusing rectangle; at (0,0,dist) - alternatively use target_index 0
cold 1 Defines the statistical fraction of events emitted from the cold part of the moderator 1
Yheight m Defines the moderator height. Valid values are 0.03 m and 0.06 m 0.03
delta m Parameter that allows to scan "collimator" position 0
thres 0.003
filter 0
repeat 1
E_smear 0.1
pos_smear 0.01
dir_smear 0.01

Links


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Wed Nov 23 21:27:24 2022