Beam transport in double elliptic neutron guides

Issue title: 4th International Workshop on Neutron Delivery Systems, Institut Laue Langevin, Grenoble, September 28–30, 2015

Guest editors: Jérôme Beaucour

Article type: Research Article

Authors: Lieutenant, Klaus^{a; *} | Cussen, Leo D.^b

Affiliations: [a] Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany | [b] Cussen Consulting, 23 Burgundy Drive, Doncaster 3108, Australia

Correspondence: [*] Corresponding author: Klaus Lieutenant, Department of EM-AMCT, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109 Berlin, Germany. Tel.: +49 30 8062 43073; Fax: +49 30 8062 42523; E-mail: klaus.lieutenant@helmholtz-berlin.de.

Abstract: The behaviour of neutrons in a double elliptical guide system is analysed in terms of expected garland, zigzag and point-to-point reflections. From this simple approach, predictions can be made for the beam properties at the focus position and interesting conclusions can be drawn for the necessary guide coating. Analytical results were confirmed by detailed Monte Carlo simulations using the simulation package VITESS.

Keywords: MC simulations, neutron guide, double elliptic guide, VITESS

DOI: 10.3233/JNR-160033

Journal: Journal of Neutron Research, vol. 18, no. 4, pp. 127-134, 2015