Recent performance of the SNS H-ion source with a record long run

B. X. Han; M. P. Stockli; R. F. Welton; S. N. Murray; T. R. Pennisi; C. M. Stinson; S. M. Cousineau

doi:10.1063/5.0057408

Recent performance of the SNS H^-ion source with a record long run

B. X. Han, M. P. Stockli, R. F. Welton, S. N. Murray, T. R. Pennisi, C. M. Stinson, S. M. Cousineau

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

10 Scopus citations

Abstract

The Spallation Neutron Source (SNS) accelerator system includes a 65 keV H- injector, a 2.5?MeV radio frequency quadrupole (RFQ), a 1 GeV linac chain (DTL-CCL-SCL) and an accumulator ring. The H- injector consists of an RF-driven, Cs-enhanced, multi-cusp H- ion source and a compact, two-lens electrostatic low energy beam transport (LEBT). In 2018, a new RFQ was installed in place of the original RFQ along with upgraded ion source support infrastructure. This paper presents the operational performance and some highlights of beam studies with the SNS ion source since the new RFQ was put into operation. SNS routinely operates at 1.4 MW average beam power for three run cycles per year. During the most recently finished run, FY20B, we operated a single source for the entire run spanning ~4 months with a >99.5% availability. A single dose of cesiation was conducted during the ion source startup which yielded ≥54?mA current for the entire run with just few minor adjustments of parameters.

Original language	English
Title of host publication	7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020
Editors	Yuri Belchenko, Dan Faircloth, Scott Lawrie, Olli Tarvainen, Motoi Wada
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735441095
DOIs	https://doi.org/10.1063/5.0057408
State	Published - Jul 30 2021
Event	7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020 - Oxford, United Kingdom Duration: Sep 1 2020 → Sep 10 2020

Publication series

Name	AIP Conference Proceedings
Volume	2373
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020
Country/Territory	United Kingdom
City	Oxford
Period	09/1/20 → 09/10/20

Funding

A special thank you to Jeff Holmes for serving as a technical reviewer on this and many other of our publications. This manuscript has been co-authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). This research was supported by the DOE Office of Science, Basic Energy Science, Scientific User Facilities. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan) A special thank you to Jeff Holmes for serving as a technical reviewer on this and many other of our publications. This manuscript has been co-authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). This research was supported by the DOE Office of Science, Basic Energy Science, Scientific User Facilities. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Access to Document

10.1063/5.0057408

Cite this

Han, B. X., Stockli, M. P., Welton, R. F., Murray, S. N., Pennisi, T. R., Stinson, C. M., & Cousineau, S. M. (2021). Recent performance of the SNS H^-ion source with a record long run. In Y. Belchenko, D. Faircloth, S. Lawrie, O. Tarvainen, & M. Wada (Eds.), 7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020 Article 040004 (AIP Conference Proceedings; Vol. 2373). American Institute of Physics Inc.. https://doi.org/10.1063/5.0057408

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abstract = "The Spallation Neutron Source (SNS) accelerator system includes a 65 keV H- injector, a 2.5?MeV radio frequency quadrupole (RFQ), a 1 GeV linac chain (DTL-CCL-SCL) and an accumulator ring. The H- injector consists of an RF-driven, Cs-enhanced, multi-cusp H- ion source and a compact, two-lens electrostatic low energy beam transport (LEBT). In 2018, a new RFQ was installed in place of the original RFQ along with upgraded ion source support infrastructure. This paper presents the operational performance and some highlights of beam studies with the SNS ion source since the new RFQ was put into operation. SNS routinely operates at 1.4 MW average beam power for three run cycles per year. During the most recently finished run, FY20B, we operated a single source for the entire run spanning ~4 months with a >99.5% availability. A single dose of cesiation was conducted during the ion source startup which yielded ≥54?mA current for the entire run with just few minor adjustments of parameters.",

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Han, BX, Stockli, MP, Welton, RF, Murray, SN, Pennisi, TR, Stinson, CM & Cousineau, SM 2021, Recent performance of the SNS H^-ion source with a record long run. in Y Belchenko, D Faircloth, S Lawrie, O Tarvainen & M Wada (eds), 7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020., 040004, AIP Conference Proceedings, vol. 2373, American Institute of Physics Inc., 7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020, Oxford, United Kingdom, 09/1/20. https://doi.org/10.1063/5.0057408

Recent performance of the SNS H^-ion source with a record long run. / Han, B. X.; Stockli, M. P.; Welton, R. F. et al.
7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020. ed. / Yuri Belchenko; Dan Faircloth; Scott Lawrie; Olli Tarvainen; Motoi Wada. American Institute of Physics Inc., 2021. 040004 (AIP Conference Proceedings; Vol. 2373).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Han BX, Stockli MP, Welton RF, Murray SN, Pennisi TR, Stinson CM et al. Recent performance of the SNS H^-ion source with a record long run. In Belchenko Y, Faircloth D, Lawrie S, Tarvainen O, Wada M, editors, 7th International Symposium on Negative Ions, Beams and Sources, NIBS 2020. American Institute of Physics Inc. 2021. 040004. (AIP Conference Proceedings). doi: 10.1063/5.0057408