Acceleration of 100 mA of H{sup {minus}} in a single channel electrostatic quadrupole accelerator

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1145450· OSTI ID:69600

Kwan, J W; Ackerman, G D; Chan, C F; Cooper, W S; de Vries, G J; Steele, W F; Stuart, M E; Vella, M C; Wells, R P ^[1]; Inoue, T; Okumura, Y; Mizuno, M ^[2]

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1. Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)
2. Japan Atomic Energy Research Institute, Naka, Naka-machi, Naka-gun, Ibaraki-ken 311-01 (Japan)

Neutral beams for the next generation tokamaks will be based on multiampere negative ion beams with a beam energy of about 1.0 MeV and pulse lengths of a thousand seconds. High intensity dc beams at these levels of beam energy will require extensive development in electrostatic accelerators. At Lawrence Berkeley Laboratory, a two-module electrostatic quadrupole (ESQ) accelerator was built to accelerate ions to 200 keV. In this experiment, up to 100 mA of H{sup {minus}} beam current was obtained from a Japan Atomic Energy Research Institute cesiated volume source using a multiaperture preaccelerator which merged 19 beamlets into a single circular beam at the entrance to the ESQ accelerator. The H{sup {minus}} beam was accelerated by the ESQ to accelerate 200 keV without any significant beam loss or emittance growth. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 69600
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 66; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM CURRENTS
ELECTROSTATIC ACCELERATORS
HYDROGEN IONS 1 MINUS
ION BEAMS
KEV RANGE 100-1000
NEUTRAL ATOM BEAM INJECTION
TOKAMAK DEVICES