2015•Unpublished venueOpen access

Mining Archived HYSPEC User Data to Analyze the Prompt Pulse at the SNS

Michael B. Smith, USDOE Office of Science (SC), Erik Iverson, Franz Gallmeier, Barry Winn

Abstract

The Hybrid-Spectrometer (HYSPEC) is one of 17 instruments currently operated at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratories (ORNL). The secondary spectrometer of this instrument is located inside an out-building off the north side of the SNS instrument hall. HYSPEC has experienced a larger background feature than similar inelastic instruments since its commissioning in 2011. This background feature is caused by a phenomenon known as the “prompt pulse” which is an essential part of neutron production in a pulsed spallation source but comes with unfortunate side effects.

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Key concepts: Oak Ridge National Laboratory, Spallation Neutron Source, Spectrometer, Neutron source, Spallation, Physics, Ridge, Nuclear physics