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

The ESS_butterfly_test Instrument

Test instrument for the updated BF1 butterfly moderator design

Identification

Description

Test instrument for the updated BF1 butterfly moderator design.

The below example gives a 50-50 (statistics-wise) cold/thermal beam at beamline N10.


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" 25
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
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 21:27:13 2022