Poster (Invited)

FZJ-2026-01856

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High resolution crystal analyzer spectrometers for long pulse neutron sources

Voigt, J.FZJ*

2026

Abstract: We discuss different concepts to realize crystal analyzer spectrometers at long pulse neutron sources.For the novel High Current Accelerator driven neutron sources, crystal arrays designed for large ac-ceptance enable resolutions down to 10 μeV with reasonable detector count rates.For the ESS we present a concept that might enable neV resolution by using GaAs monochroma-tors and analyzers and the full pulse of the ESS. The design enables the use of elastic and inelasticfixed window scans. As a special feature it extends the dynamic range by combined analysis of thefundamental Bragg reflection and the second order

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

Appears in the scientific report 2026

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