McStas logo McStas - A neutron ray-trace simulation package ILL; PSI; ESS Niels Bohr Institute DTU Physics NEXMAP

McStas

About McStas
 Conditions of use
 Authors/Contacts
 Project funding
 Screenshots

Download
 Components
 Linux Install (deb/rpm)
 Mac OS X Install
 Unix Install (src code)
 Windows Install
 Other Downloads (share)

Mailing list

Search web/mailinglist

Documentation
 McStas manual
 FAQ
 Known problems
 Publications
 C Compilers
 Other
 Tools
 Tutorial

Workshops/conferences

Developments

Links

Report bugs

Git

McStas Ubuntu live-dvd


McStas: Spherical_Backscattering_Analyser Component

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

The Spherical_Backscattering_Analyser Component

Identification

  • Author: Nikolaos Tsapatsaris (with help from Peter Willendrup, Ruep Lechner, Heloisa Bordallo)
  • Origin: Niels Bohr Institute
  • Date: 2015
  • Version:(Unknown)

Description

Spherical backscattering analyser with variable reflectivity, and mosaic gaussian response.

Based on earlier developments by Miguel A. Gonzalez 2000, Tilo Seydel 2007, Henrik Jacobsen 2011.

Example:
COMPONENT doppler = Spherical_Backscattering_Analyser(
  xmin=0, xmax=0, ymin=0, ymax=0, mosaic=21.0, dspread=0.00035, Q=2.003886241, DM=0, radius=2.5, f_doppler=0, A_doppler=0, R0=1, debug=0)

WARNING: This is a contributed Component.

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
xmin 0
xmax m Maximum absolute value of x =~ 0.5 * Width of the monochromator 0
ymin 0
ymax m Maximum absolute value of y =~ 0.5 * Height of the monochromator 0
mosaic arc min Mosaicity, FWHM 21.0
dspread 1 Relative d-sprea, FWHM 0.00035
Q AA-1 Magnitude of scattering vector 2.003886241
DM - = 2*PI/mono_Q; d_rms = dspread*DM/sqrt(8*log(2)); 0
radius m Curvature radius 2.5
f_doppler Hz Frequency of doppler drive 0
A_doppler m Amplitude of doppler drive 0
R0 1 Scalar, maximum reflectivity of neutrons 1
debug 1 if debug > 0 print out some info about the calculations 0

Output parameters

Name Unit Description Default
d_rms  
mos_rms  
mono_Q - = Q; if (DM != 0) mono_Q = 2*PI/DM;  

Links

  • Source code for Spherical_Backscattering_Analyser.comp.

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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Nov 17 13:22:33 2017


Last Modified: Friday, 17-Nov-2017 14:22:33 CET
Search website mailinglist archive GitHub repos