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

Christopher Stone; Derrick Williams; Jeremy Price

doi:10.1016/j.mex.2016.09.002

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

Christopher Stone, Derrick Williams, Jeremy Price

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 m³ 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.

Original language	English
Pages (from-to)	525-534
Number of pages	10
Journal	MethodsX
Volume	3
DOIs	https://doi.org/10.1016/j.mex.2016.09.002
State	Published - 2016

Funding

Work performed at Oak Ridge National Laboratory, which is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy .

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory	DE-AC05-00OR22725

Keywords

Neutron scattering diffractometer
Spallation neutron source
Vacuum

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10.1016/j.mex.2016.09.002

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

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 m3 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.",

keywords = "Neutron scattering diffractometer, Spallation neutron source, Vacuum",

author = "Christopher Stone and Derrick Williams and Jeremy Price",

note = "Publisher Copyright: {\textcopyright} 2016 The Author(s)",

year = "2016",

doi = "10.1016/j.mex.2016.09.002",

language = "English",

volume = "3",

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AU - Williams, Derrick

AU - Price, Jeremy

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N2 - The Extended Q-range Small-angle Neutron Scattering Diffractometer (EQ-SANS) instrument at the spallation neutron source (SNS), Oak Ridge, Tennessee, incorporates a 69 m3 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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KW - Neutron scattering diffractometer

KW - Spallation neutron source

KW - Vacuum

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

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