Design features of an axial-geometry, plasma-sputter, heavy negative ion source

Conference · Sun Aug 05 04:00:00 EDT 1990 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:6047800

Alton, G D ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee (USA)

An axial-geometry, plasma-sputter, negative ion source, which utilizes multi-cusp, magnetic-field, plasma-confinement techniques, is under design at the Oak Ridge National Laboratory (ORNL). The source is based on the principles of operation used in a recently developed radial-geometry source which has demonstrated pulsed-mode peak intensity levels of several mA for a wide spectrum of heavy negative ion species. The pulsed-mode characteristics of the source are well suited for tandem electrostatic accelerator/synchrotron injection applications. Mechanical design features include provisions for fast interchange of sputter samples, ease of maintenance, direct cooling of the discharge chamber, and the use of easily replaced coaxial LaB{sub 6} cathodes. Principal features of the source will be described and the results of computational studies of the ion extraction optics will be presented.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6047800
• Report Number(s): CONF-891055--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (USA) Journal Volume: 210:1
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM CURRENTS
BEAM EXTRACTION
BEAM OPTICS
BEAMS
CATHODES
CHARGED PARTICLES
CONFINEMENT
CURRENTS
CUSPED GEOMETRIES
DESIGN
ELECTRODES
HEAVY IONS
ION BEAMS
ION SOURCES
IONS
MAGNETIC FIELD CONFIGURATIONS
MILLI AMP BEAM CURRENTS
OPEN CONFIGURATIONS
PLASMA CONFINEMENT