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McStas: Test_FocalisationMirrors Instrument at Tests_optics

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

The Test_FocalisationMirrors Instrument

Test instrument for neutron focalisation with a set of supermirrors. No guide / velocity selector One parabolic SM converges the incoming beam to its focal point, then one elliptic SM (with primary focal point at same location as parabolic SM focal point) images the focal point onto the detector.


  • Site: Tests_optics
  • Author: Sylvain Desert
  • Origin: LLB
  • Date: 2007.
  • Version:(Unknown)


Test instrument for the MirrorElli and MirrorPara components

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
Qmin AA^-1 Minimum momentum transfer on the detector .0001
G 1 Ratio of the mirror focal length = increase in accepted divergence angle 1
H m Height of mirrors .0001
F m Parabolic focal .00066
DET m Distance between the two elliptic focal points 8.2
lambda AA Mean wavelength of neutrons 14
divergence deg Source divergence .1
BeamWidth m Length of the source to focalize .05
TetaMin TetaMin=3 for 5A and above neutron [deg] Minimum angle that must be reflected by the device assuming m=3 SM 3


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

Generated automatically by McDoc, Peter Willendrup <> / Wed Jan 12 15:13:21 2022

Last Modified: Wednesday, 12-Jan-2022 16:13:21 CET
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