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Proceedings Paper

Time-of-flight ultrasmall-angle neutron scattering instrument for the SNS
Author(s): Michael M. Agamalian; John M. Carpenter; K. C. Littrell; Pappannan Thiyagarajan; Christine Rehm
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Paper 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.

Paper Details

Date Published: 18 November 2002
PDF: 9 pages
Proc. SPIE 4785, Advances in Neutron Scattering Instrumentation, (18 November 2002); doi: 10.1117/12.469979
Show Author Affiliations
Michael M. Agamalian, Oak Ridge National Lab. (United States)
John M. Carpenter, Oak Ridge National Lab. (United States)
Argonne National Lab. (United States)
K. C. Littrell, Argonne National Lab. (United States)
Pappannan Thiyagarajan, Argonne National Lab. (United States)
Christine Rehm, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 4785:
Advances in Neutron Scattering Instrumentation
Ian S. Anderson; Bruno Guérard, Editor(s)

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