Instrumental design and expected performance of coupled-moderator near-backscattering spectrometer at J-PARC

N. Takahashi, K. Shibata, T. J. Sato, I. Tamura, R. Kajimoto, S. Harjo, K. Oikawa, M. Arai, F. Mezei

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A near-backscattering (n-BS) crystal-analyzer neutron inelastic spectrometer, DIANA, has been proposed for construction at Japan Proton Accelerator Research Complex. It has originally been designed to view a decoupled non-poisoned moderator in order to obtain high intensity and good energy resolution. Recently, we have reconsidered the instrumental parameters including the type of moderator, by performing Monte-Carlo simulations in order to obtain better performance. Among four virtual n-BS spectrometers on different beam sources moderators, a coupled-moderator-source spectrometer has shown the best performance, i.e. compared to the original DIADA design between ninefold and fivefold enhanced intensities have been obtained with 21%-better to 35%-worse energy resolutions.

Original languageEnglish
Pages (from-to)2199-2203
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume68
Issue number11
DOIs
Publication statusPublished - 2007 Nov 1
Externally publishedYes

Keywords

  • C. Neutron scattering

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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