Time-of-flight ultra-small-angle neutron scattering instrument for the SNS

M. Agamalian, J. M. Carpenter, K. C. Littrell, P. Thiyagarajan, Ch Rehm

Research output: Contribution to journalConference articlepeer-review

Abstract

The present calculations describing the Bonse-Hart Ultra-Small-Angle Neutron Scattering (USANS) Instrument with triple-bounce Si channel-cut crystals show that significant gains in neutron flux and Q-resolution can be achieved using multiple high-order Bragg reflections. These reflections become usable only after combining the Bonse-Hart and Time-of-Flight techniques, thus this variant of the USANS camera needs a pulsed neutron source. We clearly demonstrate that new instruments of that type installed at the SNS water moderator will improve the current state-of-the-art USANS camera dramatically increasing the neutron flux and sharpening the Q-resolution by almost one order of magnitude.

Original languageEnglish
Pages (from-to)134-142
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4785
DOIs
StatePublished - 2002
Externally publishedYes
EventAdvances in Neutron Scattering Instrumentation - Seattle, WA, United States
Duration: Jul 7 2002Jul 8 2002

Keywords

  • Bonse-Hart technique
  • Ultra-small-angle neutron scattering

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