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Title: Improving vacuum performance in the warm linac of the Spallation Neutron Source

Abstract

The Spallation Neutron Source is an accelerator-based neutron source built and operated by the U.S. Department of Energy in Oak Ridge, Tennessee. With over 10 years of operation at 1 MW of power and above, shortcomings have been identified in the original vacuum pumping scheme for the drift tube and the coupled cavity linear accelerator sections. In this article, the vacuum performance for these systems is reviewed and the major areas of concern are discussed. The changes to the vacuum system are examined and the final design is described. Finally, the performance impact of these changes after a year of operation with the new vacuum system is presented.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
  2. Walters State Community College, Morristown, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1570108
Alternate Identifier(s):
OSTI ID: 1569781
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films
Additional Journal Information:
Journal Volume: 37; Journal Issue: 6; Journal ID: ISSN 0734-2101
Publisher:
American Vacuum Society
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Stone, Christopher M., Gerber, Neal, Price, Jeremy P., Pelfrey, Jonathan D., Johnson, Jonathan D., Crawford, James Steven, Baker, Stan, Geng, Xiaosong, Williams, Derrick, and Ocker, Katherine D. Improving vacuum performance in the warm linac of the Spallation Neutron Source. United States: N. p., 2019. Web. doi:10.1116/1.5118352.
Stone, Christopher M., Gerber, Neal, Price, Jeremy P., Pelfrey, Jonathan D., Johnson, Jonathan D., Crawford, James Steven, Baker, Stan, Geng, Xiaosong, Williams, Derrick, & Ocker, Katherine D. Improving vacuum performance in the warm linac of the Spallation Neutron Source. United States. doi:10.1116/1.5118352.
Stone, Christopher M., Gerber, Neal, Price, Jeremy P., Pelfrey, Jonathan D., Johnson, Jonathan D., Crawford, James Steven, Baker, Stan, Geng, Xiaosong, Williams, Derrick, and Ocker, Katherine D. Tue . "Improving vacuum performance in the warm linac of the Spallation Neutron Source". United States. doi:10.1116/1.5118352.
@article{osti_1570108,
title = {Improving vacuum performance in the warm linac of the Spallation Neutron Source},
author = {Stone, Christopher M. and Gerber, Neal and Price, Jeremy P. and Pelfrey, Jonathan D. and Johnson, Jonathan D. and Crawford, James Steven and Baker, Stan and Geng, Xiaosong and Williams, Derrick and Ocker, Katherine D.},
abstractNote = {The Spallation Neutron Source is an accelerator-based neutron source built and operated by the U.S. Department of Energy in Oak Ridge, Tennessee. With over 10 years of operation at 1 MW of power and above, shortcomings have been identified in the original vacuum pumping scheme for the drift tube and the coupled cavity linear accelerator sections. In this article, the vacuum performance for these systems is reviewed and the major areas of concern are discussed. The changes to the vacuum system are examined and the final design is described. Finally, the performance impact of these changes after a year of operation with the new vacuum system is presented.},
doi = {10.1116/1.5118352},
journal = {Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films},
number = 6,
volume = 37,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
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This content will become publicly available on October 8, 2020
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