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

Christopher M. Stone; Neal Gerber; Jeremy P. Price; Jonathan D. Pelfrey; Jonathan D. Johnson; James Steven Crawford; Stan Baker; Xiaosong Geng; Derrick Williams; Katherine D. Ocker

doi:10.1116/1.5118352

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

Christopher M. Stone, Neal Gerber, Jeremy P. Price, Jonathan D. Pelfrey, Jonathan D. Johnson, James Steven Crawford, Stan Baker, Xiaosong Geng, Derrick Williams, Katherine D. Ocker

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

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.

Original language	English
Article number	061601
Journal	Journal of Vacuum Science and Technology, Part A: Vacuum, Surfaces and Films
Volume	37
Issue number	6
DOIs	https://doi.org/10.1116/1.5118352
State	Published - Nov 1 2019
Externally published	Yes

Funding

The authors would like to thank Charles Peters for assistance in gathering operational data from the data archiving system at SNS. This work was supported by SNS through UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy.

Funders	Funder number
UT-Battelle, LLC
SNS Nordic Forest Research

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AU - Geng, Xiaosong

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

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