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

The Res_sample component

Sample for resolution function calculation.

Identification

• Author: KN
• Origin: McStas release
• Date: 1999
• Version: 1.7

Description

An inelastic sample with completely uniform scattering in both Q and
energy. This sample is used together with the Res_monitor component and
(optionally) the mcresplot front-end to compute the resolution function of
triple-axis or inverse-geometry time-of-flight instruments.

The shape of the sample is either a hollow cylinder or a rectangular box. The
hollow cylinder shape is specified with an inner and outer radius. If the
outher radius is negative, the shape is instead a box.

The scattered neutrons will have directions towards a given sphere and
energies betweed E0-dE and E0+dE.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
radius_i	m	Inner radius of hollow cylinder in (x,z) plane, or width of box along X
radius_o	m	Outer radius of hollow cylinder, or negative box depth along Z
h	m	Height of box or cylinder along Y
focus_r	m	Radius of sphere containing target.
E0	meV	Center of scattered energy range
dE	meV	half width of scattered energy range
target_x
target_y	m	position of target to focus at
target_z

Output parameters

Name	Unit	Description	Default
res_struct

Links

• Source code for Res_sample.comp.

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

Generated automatically by McDoc, Kristian Nielsen <kristian.nielsen@risoe.dk> / Jan 22 2001

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Last Modified: Tuesday, 22-Jun-2004 14:04:09 CEST