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14.109 The TOF_PSDmonitor_toQ McStas Component
Position-sensitive, linear Q monitor.
Identification
-
Author: Robert Dalgliesh
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Origin: ISIS
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Date: September 2021
Description
One-dimensional Q-monitor. Calculates Q from "measured" time-of-flight, i.e. not from particle velocity parameters.
Adapted from Kim Lefmann’s TOF_cylPSDmonitor and PSD_monitors An n pixel Q-monitor based on measured Time of Flight detection. This component may also be used as a beam detector.
Example: TOF_PSDmonitor_toQ(xmin=-0.1, xmax=0.1, ymin=-0.1, ymax=0.1, ny=90, nqbin=100, TOFmin=0.0, TOFmax=20000.0, filename="Output.psd")
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
ny |
1 |
Number of y bins (for discretisation of vertical detector dimension into "bins") |
90 |
|
nqbin |
1 |
number of q bins |
500 |
|
xwidth |
m |
width of detector opening |
0.1 |
|
xmin |
m |
Lower x bound of detector opening |
0 |
|
xmax |
m |
Upper x bound of detector opening |
0 |
|
yheight |
m |
height of detector opening |
0.1 |
|
ymin |
m |
Lower y bound of detector opening |
0 |
|
ymax |
m |
Upper y bound of detector opening |
0 |
|
tmin |
mu-s |
Beginning TOF window |
0.0 |
|
tmax |
mu-s |
End TO window |
100000.0 |
|
qmin |
Å\(^{-1}\) |
Start of q window |
0.005 |
|
qmax |
Å\(^{-1}\) |
End of q window |
0.5 |
|
L1 |
m |
distance from source to sample (m) |
23.0 |
|
L2 |
m |
distance from sample to detector (m) |
3.0 |
|
detTheta |
deg |
Nominal detector theta |
0.91 |
|
filename |
str |
Name of file in which to store the detector image |
0 |
|
nowritefile |
1 |
If set, detector will skip writing to disk |
0 |
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Links
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Component source code found in file TOF_PSDmonitor_toQ.comp.
