[ Identification | Description | Input 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.

Identification

Site: Tests_optics
Author: Sylvain Desert
Origin: LLB
Date: 2007.

Description

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	deg	Minimum angle that must be reflected by the device assuming m=3 SM (TetaMin=3 for 5A and above neutron)	3

The Test_FocalisationMirrors Instrument

Identification

Description

Input parameters

Links

The `Test_FocalisationMirrors` Instrument