2011 Particle Accelerator Conference - List of Authors (Murray, S.N.)

Paper	Title	Page
WEP275	Highly-Persistent SNS H⁻ Source Fueling 1-MW Beams with 7-9 kC Service Cycles	1993
	M.P. Stockli, T.W. Hardek, Y.W. Kang, S.N. Murray, T.R. Pennisi, M.F. Piller, M. Santana, R.F. Welton ORNL, Oak Ridge, Tennessee, USA B. Han ORNL RAD, Oak Ridge, Tennessee, USA
	Funding: SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. Running routinely with ~40-mA, 1-MW beams, the SNS linac is fed from the ion source with ~1ms long, ~50-mA H⁻ beam pulses at 60 Hz. This requires the daily extraction of ~230 C of H⁻ ions, which exceeds the routine daily production of other H⁻ accelerator sources by almost an order of magnitude. The source service cycle has been extended from 2, to 3, to 4, and up to 5.6 weeks without age-related failures. The 7-9 kC of H⁻ ions delivered in single service cycles exceed the service cycle yields of other accelerator sources. The paper discusses the findings as well as the issues and their mitigations, which enabled the simultaneous increase of the beam current, the duty factor, the availability, and the service cycle.

Paper

Title

Page

Highly-Persistent SNS H⁻ Source Fueling 1-MW Beams with 7-9 kC Service Cycles

1993

M.P. Stockli, T.W. Hardek, Y.W. Kang, S.N. Murray, T.R. Pennisi, M.F. Piller, M. Santana, R.F. Welton
ORNL, Oak Ridge, Tennessee, USA
B. Han
ORNL RAD, Oak Ridge, Tennessee, USA

Funding: SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy.
Running routinely with ~40-mA, 1-MW beams, the SNS linac is fed from the ion source with ~1ms long, ~50-mA H⁻ beam pulses at 60 Hz. This requires the daily extraction of ~230 C of H⁻ ions, which exceeds the routine daily production of other H⁻ accelerator sources by almost an order of magnitude. The source service cycle has been extended from 2, to 3, to 4, and up to 5.6 weeks without age-related failures. The 7-9 kC of H⁻ ions delivered in single service cycles exceed the service cycle yields of other accelerator sources. The paper discusses the findings as well as the issues and their mitigations, which enabled the simultaneous increase of the beam current, the duty factor, the availability, and the service cycle.