A look ahead: Status of the SNS external antenna ion source and the new RFQ test stand

Conference · Wed Apr 01 04:00:00 EDT 2015

DOI:https://doi.org/10.1063/1.4916429· OSTI ID:1785222

Welton, Robert F. ^[1]; Aleksandrov, Alexander V. ^[1]; Dudnikov, Vadim ^[2]; Han, Baoxi ^[1]; Murray Jr, Syd ^[1]; Pennisi, Terry ^[1]; Piller, Chip ^[1]; Kang, Yoon ^[1]; Santana, Manuel ^[1]; Stockli, Martin P. ^[1]

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1. ORNL
2. Muons, Inc.

The U.S. Spallation Neutron Source (SNS) now operates with ~1 MW of beam power to target with the near-term goal of delivering 1.4 MW. Plans are being considered to incorporate a second target station into the facility which will require ~2.8 MW of beam power. Presently, H- beam pulses (~1 ms, 60 Hz) are produced by an RF-driven, Cs-enhanced, multi-cusp ion source which injects beam into an RFQ (Radio Frequency Quadrupole) accelerator that, in turn, feeds the SNS Linac. Currently the source/RFQ system delivers ~35 mA of pulsed current to the linac which is mostly sufficient for 1.4 MW operations while ~50 mA are needed for the second target station upgrade. This paper provides a look forward for the SNS by providing (i) the present and future SNS source/RFQ beam requirements and our plans to achieve these, (ii) a description and status of the external antenna ion source being developed for the replacement of the current internal antenna ion source, and (iii) a description and status of the newly constructed RFQ test facility.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1785222
• Country of Publication: United States
• Language: English