Optimization of the cesiation process for the spallation neutron source (SNS) H- ion sources

Baoxi Han; Robert Welton; Syd Murray; Terry Pennisi; Chris Stinson; Manuel Santana; Martin Stockli

doi:10.1063/1.5053325

Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources

Baoxi Han, Robert Welton, Syd Murray, Terry Pennisi, Chris Stinson, Manuel Santana, Martin Stockli

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

1 Scopus citations

Abstract

RF-driven (internal and external antenna), Cs-enhanced H^- ion sources at the Spallation Neutron Source (SNS) facility are capable of producing high current (>60 mA), high duty-factor (1 ms, 60 Hz) H^- beams lasting multiple months. A solid reaction Cs dispenser system is used to cesiate the ion source. This work reports on our continuous effort to optimize the ion source cesiation process guided by the Cs signal observed with the plasma emission spectroscopy to mitigate the Cs induced high voltage sparking while assuring to enable high H^- beam currents.

Original language	English
Title of host publication	Proceedings of the 17th International Conference on Ion Sources
Editors	Edgar Mahner, Richard Scrivens, Richard Pardo, Jacques Lettry, Bruce Marsh
Publisher	American Institute of Physics Inc.
ISBN (Print)	9780735417274
DOIs	https://doi.org/10.1063/1.5053325
State	Published - Sep 21 2018
Externally published	Yes
Event	17th International Conference on Ion Sources 2018 - Geneva, Switzerland Duration: Sep 15 2017 → Sep 20 2017

Publication series

Name	AIP Conference Proceedings
Volume	2011
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	17th International Conference on Ion Sources 2018
Country/Territory	Switzerland
City	Geneva
Period	09/15/17 → 09/20/17

Funding

This work was performed at Oak Ridge National Laboratory, which is managed by UT-Battelle, LLC, under contract number DE-AC05-00OR22725 for the United States Department of Energy.

Funders	Funder number
UT-Battelle	DE-AC05-00OR22725
United States Department of Energy
Oak Ridge National Laboratory

Access to Document

10.1063/1.5053325

Cite this

Han, B., Welton, R., Murray, S., Pennisi, T., Stinson, C., Santana, M., & Stockli, M. (2018). Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources. In E. Mahner, R. Scrivens, R. Pardo, J. Lettry, & B. Marsh (Eds.), Proceedings of the 17th International Conference on Ion Sources Article 050027 (AIP Conference Proceedings; Vol. 2011). American Institute of Physics Inc.. https://doi.org/10.1063/1.5053325

Han, Baoxi ; Welton, Robert ; Murray, Syd et al. / Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources. Proceedings of the 17th International Conference on Ion Sources. editor / Edgar Mahner ; Richard Scrivens ; Richard Pardo ; Jacques Lettry ; Bruce Marsh. American Institute of Physics Inc., 2018. (AIP Conference Proceedings).

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abstract = "RF-driven (internal and external antenna), Cs-enhanced H- ion sources at the Spallation Neutron Source (SNS) facility are capable of producing high current (>60 mA), high duty-factor (1 ms, 60 Hz) H- beams lasting multiple months. A solid reaction Cs dispenser system is used to cesiate the ion source. This work reports on our continuous effort to optimize the ion source cesiation process guided by the Cs signal observed with the plasma emission spectroscopy to mitigate the Cs induced high voltage sparking while assuring to enable high H- beam currents.",

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Han, B , Welton, R, Murray, S, Pennisi, T, Stinson, C, Santana, M & Stockli, M 2018, Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources. in E Mahner, R Scrivens, R Pardo, J Lettry & B Marsh (eds), Proceedings of the 17th International Conference on Ion Sources., 050027, AIP Conference Proceedings, vol. 2011, American Institute of Physics Inc., 17th International Conference on Ion Sources 2018, Geneva, Switzerland, 09/15/17. https://doi.org/10.1063/1.5053325

Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources. / Han, Baoxi ; Welton, Robert; Murray, Syd et al.
Proceedings of the 17th International Conference on Ion Sources. ed. / Edgar Mahner; Richard Scrivens; Richard Pardo; Jacques Lettry; Bruce Marsh. American Institute of Physics Inc., 2018. 050027 (AIP Conference Proceedings; Vol. 2011).

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

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Han B , Welton R, Murray S, Pennisi T, Stinson C, Santana M et al. Optimization of the cesiation process for the spallation neutron source (SNS) H^- ion sources. In Mahner E, Scrivens R, Pardo R, Lettry J, Marsh B, editors, Proceedings of the 17th International Conference on Ion Sources. American Institute of Physics Inc. 2018. 050027. (AIP Conference Proceedings). doi: 10.1063/1.5053325