| Paper |
Title |
Page |
| TUPLT175 |
Operation of the SNS Ion Source at High Duty-Factor
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1538 |
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- R.F. Welton, T.A. Justice, S.N. Murray, M.P. Stockli
ORNL/SNS, Oak Ridge, Tennessee
- R. Keller
LBNL/AFR, Berkeley, California
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The ion source for the Spallation Neutron Source* (SNS) is a radio frequency, multi-cusp, source designed to deliver ~ 45 mA of H- with a normalized rms emittance of less than 0.2 pi mm mrad to the SNS accelerator. Once the SNS is fully operational a beam current duty factor of 6% (1 ms pulse length, repetition rate of 60 Hz) will be required from the ion source. To date, the source has been utilized in the early commissioning of the SNS accelerator and has already demonstrated stable, satisfactory operation at beam currents of ~30 mA with duty factors of ~0.1% for operational periods of several weeks. This work summarizes the results of a series of lifetime tests performed at a dedicated ion source test facility where the source was pushed closer to the operational goal of 6% duty factor.
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| TUPLT168 |
SNS Beam Commisioning Status
|
1524 |
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- S. Henderson, A.V. Aleksandrov, S. Assadi, W. Blokland, C. Chu, S.M. Cousineau, V.V. Danilov, G.W. Dodson, J. Galambos, M. Giannella, D.-O. Jeon, S. Kim, L.V. Kravchuk, M.P. Stockli, E. Tanke, R.F. Welton, T.L. Williams
ORNL/SNS, Oak Ridge, Tennessee
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The Spallation Neutron Source accelerator systems will provide a 1 GeV, 1.44 MW proton beam to a liquid mercury target for neutron production. The accelerator complex consists of an H- injector capable of producing 38 mA peak current, a 1 GeV linear accelerator, an accumulator ring and associated transport lines. The linear accelerator consists of a Drift Tube Linac, a Coupled-Cavity Linac and a Superconducting Linac which provide 1.5 mA average current to the accumulator ring. The staged beam commissioning of the accelerator complex is proceeding as component installation progresses. In three separate beam commissioning runs, the H- injector and Drift Tube Linac tanks 1-3 have been commissioned at ORNL. Several important performance goals have been achieved, namely 38 mA peak beam current, 1 msec beam pulse length and 1 mA average beam current. Results and status of the beam commissioning program will be presented.
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