title: A novel small-angle neutron scattering detector geometry.
abstract: A novel 2π detector geometry for small-angle neutron scattering (SANS) applications is presented and its theoretical performance evaluated. Such a novel geometry is ideally suited for a SANS instrument at the European Spallation Source (ESS). Motivated by the low availability and high price of3He, the new concept utilizes gaseous detectors with10B as the neutron converter. The shape of the detector is inspired by an optimization process based on the properties of the conversion material. Advantages over the detector geometry traditionally used on SANS instruments are discussed. The angular and time resolutions of the proposed detector concept are shown to satisfy the requirements of the particular SANS instrument.
authors.affiliation: European Spallation Source ESS AB, PO Box 176, 22 100 Lund, Sweden.
authors.forename: Kalliopi
authors.initials: K
authors.lastname: Kanaki
authors.forename: Andrew
authors.initials: A
authors.lastname: Jackson
authors.forename: Richard
authors.initials: R
authors.lastname: Hall-Wilton
authors.forename: Francesco
authors.initials: F
authors.lastname: Piscitelli
authors.forename: Oliver
authors.initials: O
authors.lastname: Kirstein
authors.forename: Ken H
authors.initials: KH
authors.lastname: Andersen
keywords: European Spallation Source (ESS); boron carbide; boron-10; detectors; geometry; helium-3; neutrons; optimization based on material properties; small-angle neutron scattering (SANS)
references.citation: Science. 2009 Nov 6;326(5954):778-9
references.pmid: 19892947