Vacuum system upgrade for extended Q-range small-angle neutron scattering diffractometer (EQ-SANS) at SNS

Journal Article · Fri Jan 01 00:00:00 EST 2016 · MethodsX

DOI:https://doi.org/10.1016/j.mex.2016.09.002· OSTI ID:1392142

Stone, Christopher; Williams, Derrick; Price, Jeremy

The Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) instrument at the Spallation Neutron Source (SNS), Oak Ridge, Tennessee, incorporates a 69m3 detector vessel with a vacuum system which required an upgrade with respect to performance, ease of operation, and maintenance. The upgrade focused on improving pumping performance as well as optimizing system design to minimize opportunity for operational error. This upgrade provided the following practical contributions: Reduced time required to evacuate from atmospheric pressure to 2mTorr from 500-1,000 minutes to 60-70 minutes Provided turn-key automated control with a multi-faceted interlock for personnel and machine safety.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1392142
• Alternate ID(s): OSTI ID: 1337853
• Journal Information: MethodsX, Journal Name: MethodsX Vol. 3 Journal Issue: C; ISSN 2215-0161
• Publisher: Elsevier
• Country of Publication: Netherlands
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
vacuum
neutron scattering diffractometer
spallation neutron source