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McStas: DivPos_monitor Component

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

The DivPos_monitor Component

Divergence/position monitor (acceptance diagram).

Identification

  • Author: Kristian Nielsen
  • Origin: Risoe
  • Date: 1999
  • Version: $Revision$

Description

2D detector for intensity as a function of both horizontal position
and wavelength. This gives information similar to an aceptance diagram used
eg. to investigate beam profiles in neutron guides.

Example: DivPos_monitor(nh=20, ndiv=20, filename="Output.dip",
          xmin=-0.1, xmax=0.1, ymin=-0.1, ymax=0.1, maxdiv_h=2)

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
nh 1 Number of bins in position 20
ndiv 1 Number of bins in divergence 20
filename string Name of file in which to store the detector image 0
xmin m Lower x bound of detector opening -0.05
xmax m Upper x bound of detector opening 0.05
ymin m Lower y bound of detector opening -0.05
ymax m Upper y bound of detector opening 0.05
xwidth m Width of detector. Overrides xmin,xmax. 0
yheight m Height of detector. Overrides ymin,ymax. 0
maxdiv_h degrees Maximal horizontal divergence detected 2
restore_neutron 1 If set, the monitor does not influence the neutron state 0
nx 0
ny 1 Vector definition of "forward" direction wrt. divergence, to be used e.g. when the monitor is rotated into the horizontal plane. 0
nz 1

Output parameters

Name Unit Description Default
Div_N - Array of neutron counts  
Div_p - Array of neutron weight counts  
Div_p2 - Array of second moments  

Links


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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Wed Apr 19 10:57:33 2017


Last Modified: Wednesday, 19-Apr-2017 12:57:33 CEST
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