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

Smith, Michael B.¹  Iverson, Erik B.¹  Gallmeier, Franz X.¹  Winn, Barry L.¹ 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

关键词: HYSPEC;    prompt;    pulse;    background;   

DOI  :  10.2172/1224749
RP-ID  :  ORNL/TM--2015/238
PID  :  OSTI ID: 1224749
Others  :  Other: KC0402010
Others  :  ERKCSND

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来源: SciTech Connect

【 摘 要 】

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.