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Published January 2013 | Published
Journal Article Open

Performance of the Los Alamos National Laboratory spallation-driven solid-deuterium ultra-cold neutron source


In this paper, we describe the performance of the Los Alamos spallation-driven solid-deuterium ultra-cold neutron (UCN) source. Measurements of the cold neutron flux, the very low energy neutron production rate, and the UCN rates and density at the exit from the biological shield are presented and compared to Monte Carlo predictions. The cold neutron rates compare well with predictions from the Monte Carlo code MCNPX and the UCN rates agree with our custom UCN Monte Carlo code. The source is shown to perform as modeled. The maximum delivered UCN density at the exit from the biological shield is 52(9) UCN/cc with a solid deuterium volume of ∼1500 cm^3.

Additional Information

© 2013 American Institute of Physics. Received 25 July 2012; accepted 14 November 2012; published online 14 January 2013.

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Published - RevSciInstrum_84_013304.pdf


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