Penning surface-plasma source scaling laws---theory and practice

Conference · Mon Oct 05 04:00:00 EDT 1992 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5341373

Smith, Jr, H V; Allison, P; Sherman, J D ^[1]

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1. Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

The small-angle source (SAS), 4X source, and 8X source are Penning surface-plasma sources (SPS) that produce high-current, high-brightness H[sup [minus]] ion beams for accelerator applications. It is desirable to achieve high duty-factor (df) operation, ultimately dc, with a Penning SPS. Two developments may make this goal possible. First, the H[sup [minus]] beam-emission scaling from the SAS (the 1X device) to the 4X source, and from the 4X source to the 8X source, is more favorable than the scaling laws predict. Second, fringe-field separation of the e[sup [minus]] and H[sup [minus]] beams may make it possible to handle the power of the coextracted e[sup [minus]] beam, especially since a collar arrangement reduces the e[sup [minus]] loading. We compare our measured results with the predictions of the Penning SPS scaling laws. Particular attention is paid to the H[sup [minus]] current and temperature scaling as well as the power efficiency.

• OSTI ID: 5341373
• Report Number(s): CONF-921145--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 287:1
• Country of Publication: United States
• Language: English

Related Subjects

661220* -- Particle Beam Production & Handling
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANIONS
BEAMS
BRIGHTNESS
CATHODES
CHARGED PARTICLES
DATA
DESIGN
ELECTRODES
EXPERIMENTAL DATA
HOLLOW CATHODES
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
INFORMATION
ION BEAMS
ION SOURCES
ION TEMPERATURE
IONS
NUMERICAL DATA
OPTICAL PROPERTIES
PENNING ION SOURCES
PHYSICAL PROPERTIES
SCALING LAWS
Ta
Targets-- (1992-)