[ Identification | Description | Input parameters | Links ]

The ISIS_HET Instrument

Identification

• Site: ISIS
• Author: Dickon Champion
• Origin: ISIS (UK)
• Date: 22nd Jan 2004.

Description

This instrument is a simple model of the HET spectrometer at the ISIS neutron
facility. The input arguments are hardwired so that the Fermi chopper position
is 10 metres from the moderator. This instrument uses the FC module written by
Andrew Garret which comes with no guarantees as to its accuracy in modelling the
Fermi Chopper.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
Emin	meV	lowest energy sampled	443.0
Emax	meV	highest energy sampled	470.0
nu_chop	Hz	frequency of chopper rotation	600.0
type		chopper package - sloppy chopper = 1, B chopper = 2	2

Links

• Source code for ISIS_HET.instr.

---

[ Identification | Description | Input parameters | Links ]

Generated for mcstas 3.5.32

---

Last Modified: Monday, 30-Jun-2025 11:05:09 CEST