November 2023

Conference Paper

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

By:
Han, Baoxi ; Welton, Robert F; Murray Jr, Sydney N; Pennisi, Terry R; Stinson, Christopher M; Santana, Manuel ; Stockli, Martin P
Page Number:
50027-50027
Volume:
2011
Book Title:
AIP Conference Proceedings
Publication Date:
November 9, 2023
Conference Name:
17th International Conference on Ion Sources (ICIS2017)
Conference Location:
Geneva, Switzerland
Conference Sponsor:
CERN
View DOI Listing:
https://doi.org/10.1063/1.5053325

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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