Incremental performance improvements for a surface-convergency H- ion source

Conference · Wed Nov 10 04:00:00 EST 2010

OSTI ID:1040833

Rouleau, Gary ^[1]; Chacon - Golcher, Edwin ^[1]; Geros, Ernest ^[1]; Johnson, Kenneth ^[1]; Rybarcyk, Lawrence ^[1]; Stelzer, James ^[1]; Keller, Roderich ^[2]; Tarvainen, Olli ^[2]

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1. Los Alamos National Laboratory
2. NON LANL

We discuss some of the interventions on LANSCE's surface-conversion negative-hydrogen ion sources to increase reliability; lifetime and output without any major re-design of the machine. LANSCE's source presently delivers a baseline 16 mA, 60 Hz, 12% duty factor beam. We describe how better quality control and processing of tungsten filaments allow the comfortable completion of 28-day run cycles, how improved temperature control of the ion source body yields an increased H{sup -} output, how higher input power through an additional filament allows operations at plasma densities while maintaining the filament lifetime and how adequate electrode biasing inside the source provide some control over the beam Twiss parameters on exit.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1040833
• Report Number(s): LA-UR-10-07614; LA-UR-10-7614
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CESIUM
ELECTRODES
HYDROGEN IONS
ION SOURCES
LIFETIME
PERFORMANCE
PLASMA
PROCESSING
QUALITY CONTROL
RELIABILITY
TEMPERATURE CONTROL
TUNGSTEN