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Title: Vacuum System Upgrade for Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) at SNS

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.
Authors:
 [1] ;  [1] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Research Accelerators Division
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Published Article
Journal Name:
MethodsX
Additional Journal Information:
Journal Volume: 3; Journal Issue: C; Journal ID: ISSN 2215-0161
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; vacuum; neutron scattering diffractometer; spallation neutron source
OSTI Identifier:
1392142
Alternate Identifier(s):
OSTI ID: 1337853

Stone, Christopher M., Williams, Derrick C., and Price, Jeremy P.. Vacuum System Upgrade for Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) at SNS. United States: N. p., Web. doi:10.1016/j.mex.2016.09.002.
Stone, Christopher M., Williams, Derrick C., & Price, Jeremy P.. Vacuum System Upgrade for Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) at SNS. United States. doi:10.1016/j.mex.2016.09.002.
Stone, Christopher M., Williams, Derrick C., and Price, Jeremy P.. 2016. "Vacuum System Upgrade for Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) at SNS". United States. doi:10.1016/j.mex.2016.09.002.
@article{osti_1392142,
title = {Vacuum System Upgrade for Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) at SNS},
author = {Stone, Christopher M. and Williams, Derrick C. and Price, Jeremy P.},
abstractNote = {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.},
doi = {10.1016/j.mex.2016.09.002},
journal = {MethodsX},
number = C,
volume = 3,
place = {United States},
year = {2016},
month = {9}
}