Time-of-flight ultrasmall-angle neutron scattering instrument for the SNS

Michael M. Agamalian; John M. Carpenter; K. C. Littrell; Pappannan Thiyagarajan; Christine Rehm

doi:10.1117/12.469979

18 November 2002 Time-of-flight ultrasmall-angle neutron scattering instrument for SNS

Michael M. Agamalian, John M. Carpenter, K. C. Littrell, Pappannan Thiyagarajan, Christine Rehm

Proceedings Volume 4785, Advances in Neutron Scattering Instrumentation; (2002) https://doi.org/10.1117/12.469979
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Michael M. Agamalian, John M. Carpenter, K. C. Littrell, Pappannan Thiyagarajan, and Christine Rehm "Time-of-flight ultrasmall-angle neutron scattering instrument for SNS", Proc. SPIE 4785, Advances in Neutron Scattering Instrumentation, (18 November 2002); https://doi.org/10.1117/12.469979

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