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

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MethodsX

Elsevier

Vacuum, Neutron scattering diffractometer, Spallation neutron source

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      Abstract

      The Extended Q-range Small-angle Neutron Scattering Diffractometer (EQ-SANS) instrument at the spallation neutron source (SNS), Oak Ridge, Tennessee, incorporates a 69 m 3 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 2 mTorr from 500 to 1000 min to 60–70 min
      • Provided turn-key automated control with a multi-faceted interlock for personnel and machine safety.

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            Author and article information

            Affiliations
            Research Accelerators Division, Oak Ridge National Laboratory, 1 Bethel Road, Oak Ridge, TN, 37831, USA
            Author notes
            [* ]Corresponding author. stonecm@ 123456ornl.gov
            Contributors
            Journal
            MethodsX
            MethodsX
            MethodsX
            Elsevier
            2215-0161
            23 September 2016
            2016
            23 September 2016
            : 3
            : 525-534
            5065636
            S2215-0161(16)30033-4
            10.1016/j.mex.2016.09.002
            © 2016 The Author(s)

            This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

            Categories
            Engineering
            Keywords:

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