The `McStas_PowderN` Instrument

Wrapper instrument for use of PowderN in SIMRES

Identification

Site: SINE2020
Author: Peter Willendrup
Origin: DTU
Date: December 2018

Description

This instrument provides an MCPL-based interface for the use of PowderN in the SIMRES package.
The instrument has been developed in the context of WP8 in the SINE2020 project and is part of
deliverable D8.8.

(EU Horizon 2020 research and innovation programme under grant agreement No 654000).

The default material is Al as a cylinder of radius 0.01 m x height 0.07 m

Example: McStas_PowderN reflections=Al.lau radius=0.01 yheight=0.07

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
reflections	string	Input file for reflections, laz and lau formats from McStas accepted	"Al.lau"
geometry	string	Name of an Object File Format (OFF) or PLY file for complex geometry.	""
radius	m	Sample radius	0.01
xwidth	m	Sample width along x	0
yheight	m	Sample height along y	0.07
zdepth	m	Sample depth along z	0
thickness	m	Thickness of hollow sample	0
pack	m	Packing factor.	1
d_omega	deg	Horizontal (incoherent only) focusing limit [deg]	0
d_phi	deg	Vertical focusing limit [deg]	0
focus_flip	1	Controls the sense of d_phi. If 0 d_phi is measured against the xz-plane. If nonzero, d_phi is measured against zy-plane.	0
tth_sign	1	Sign of the scattering angle. If 0, the sign is chosen randomly	0
barns	1	Flag to indicate if \|F 2\| from "reflections" is in barns or fm2 (barns = 1 for laz, barns = 0 for lau type files).	0
rot_x	deg	Sample rotation around x	0
rot_y	deg	Sample rotation around y	0
rot_z	deg	Sample rotation around z	0

The McStas_PowderN Instrument

Identification

Description

Input parameters

Links

The `McStas_PowderN` Instrument