[ Identification | Description | Input parameters | Links ]

The `ISIS_OSIRIS` Instrument

A simulation of the indirect TOF geometry part of the OSIRIS instrument.

Identification

Site: ISIS
Author: Peter Christiansen with input from Mark Telling, updates by P Willendrup
Origin: DTU Fysik, RISOE and ISIS
Date: November 2015

Description

If LAMBDA = 0, the choppers are disabled, else the choppers are
centered to chop around this wavelength and the source is studied in the
interval LAMBDA +- DLAMBDA.

IMPORTANT NOTES:

1) Monchromator is not realistic in the sense that it does NOT
smear the beam out according to the mosaicity, only does the N=1
reflection, and the d-spread is handled in a simple way

2) The instrument is not validated or certified by ISIS. Is only put in
McStas for completeness.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
LAMBDA	AA	Mean wavelength at source	6.66
DLAMBDA	AA	Wavelength spread at source	0.1
GUIDEREFLECTIVITY	1	R0-reflectivity of guide	1.0

The ISIS_OSIRIS Instrument

Identification

Description

Input parameters

Links

The `ISIS_OSIRIS` Instrument