McStas logo McStas - A neutron ray-trace simulation package ILL; PSI; ESS Niels Bohr Institute DTU Physics NEXMAP


About McStas
 Conditions of use
 Project funding

 Other Downloads (share)

Mailing list

Search web/mailinglist

 Wiki (GitHub)
 McStas manual


Report bugs (GitHub)

Code-repository (GitHub)

McStas: Divergence_monitor Component

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

The Divergence_monitor Component

Horizontal+vertical divergence monitor.


  • Author: Kim Lefmann
  • Origin: Risoe
  • Date: Nov. 11, 1998
  • Version:(Unknown)


A divergence sensitive monitor. The counts are distributed in
(n times m) pixels.

Example: Divergence_monitor(nh=20, nv=20, filename="Output.pos",
          xmin=-0.1, xmax=0.1, ymin=-0.1, ymax=0.1,
          maxdiv_h=2, maxdiv_v=2)

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
nh 1 Number of pixel rows 20
nv 1 Number of pixel columns 20
filename 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
maxdiv_v degrees Maximal vertical 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
nowritefile 1 If set, monitor will skip writing to disk 0

Output parameters

Name Unit Description Default


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

Generated automatically by McDoc, Peter Willendrup <> / Wed Jan 12 15:13:31 2022

Last Modified: Wednesday, 12-Jan-2022 16:13:31 CET
Search website mailinglist archive GitHub repos