Some novel design features of the LBL metal vapor vacuum arc ion sources

Conference · Mon Jan 01 00:00:00 EST 1990 · Review of Scientific Instruments; (USA)

OSTI ID:7163446

MacGill, R A; Brown, I G; Galvin, J E ^[1]

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1. Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (US)

The family of MEVVA (metal vapor vacuum arc) high current metal ion sources developed at LBL over the past several years has grown to include a number of different source versions with a wide range of some of the design and operational parameters. The MicroMEVVA source is a particularly compact version, about 2 cm diam and 10 cm long, while the MEVVA IV weighs some 30 kG. MEVVAs IV and V incorporate multiple cathode assemblies (16 and 18 separate cathodes, respectively), and the operating cathode can be switched rapidly and without downtime. The new MEVVA V embodiment is quite compact considering its broad beam (10 cm), high voltage (100 kV), and multiple cathode features. The large-area extractor grids used in MEVVA V were fabricated using a particularly simple technique, and they are clamped into position and can thus be changed simply and quickly. The electrical system used to drive the arc is particularly simple and incorporates several attractive features. In this article we review and describe a number of the mechanical and electrical design features that have been developed for these sources.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7163446
• Report Number(s): CONF-890703-; CODEN: RSINA; TRN: 90-012087
• Journal Information: Review of Scientific Instruments; (USA), Vol. 61:1; Conference: International conference on ion sources, Berkeley, CA (USA), 10-14 Jul 1989; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ION SOURCES
DESIGN
BEAM CURRENTS
CATHODES
FABRICATION
LAWRENCE BERKELEY LABORATORY
OPERATION
PULSE CIRCUITS
CURRENTS
ELECTRODES
ELECTRONIC CIRCUITS
NATIONAL ORGANIZATIONS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
640301* - Atomic
Molecular & Chemical Physics- Beams & their Reactions