The SNS Moderator Demonstration Facility

Conference · Tue May 01 04:00:00 EDT 2018

DOI:https://doi.org/10.1088/1742-6596/1021/1/012036· OSTI ID:1994751

Iverson, Erik B. ^[1]; Gallmeier, Franz X. ^[1]; Gillis, Robert Chad ^[1]; Huegle, Thomas ^[1]; McClanahan, Tucker C. ^[2]

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1. ORNL
2. University of Tennessee, Knoxville (UTK)

We describe a moderator demonstration facility at the Spallation Neutron Source (SNS). We will use the Beam Test Facility (BTF) at SNS to provide a moderator neutronics test stand with which we will verify the performance gains expected from the innovative moderator concepts central to the SNS Second Target Station. These concepts include large-volume para-hydrogen moderators and high-brightness moderators, as well as new moderator materials. The BTF provides a test facility for the new Radio-Frequency Quadrupole accelerator (RFQ) to be installed at SNS and produce a pulsed H− beam of 2.5 MeV energy. We will add to the BTF a beam chopper similar to that already used in the SNS at the RFQ exit, various beam transport components, a neutron-producing target, a cryogenic moderator test stand, a reflector-shielding assembly, and a performance assessment neutron beamline.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1994751
• Country of Publication: United States
• Language: English