Negative ion production in the RF multiaperture surface-plasma source

Journal Article · Wed Apr 08 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4916444· OSTI ID:22391425

Abdrashitov, G.; Dranichnikov, A.; Gorbovsky, A.; Kapitonov, V.; Kolmogorov, V.; Kondakov, A.; Konstantinov, S.; Sanin, A.; Selivanov, A.; Selivanov, P.; Shikhovtsev, I.; Stupishin, N.; Tiunov, M. ^[1]; Ivanov, A.; Sotnikov, O. ^[1]; Binderbauer, M.; Putvinski, S.; Smirnov, A.; Sevier, L. ^[2]

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1. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
2. Tri Alpha Energy Inc., Rancho Santa Margarita, CA 92688 (United States)

The experiments on negative hydrogen ion beam production in a multi-aperture long-pulse surface-plasma source are described. H- ions are produced on the surface of a plasma grid covered by cesium and illuminated by fast plasma particles. The source uses a radio-frequency driver to generate plasma. A composite magnet system made of external permanent magnets confines and filters electrons in the plasma region, and deflects them in the extraction area. A multiaperture, multi-electrode ion optical system is used for beam formation. The electrode heating and cooling during long pulses is accomplished by circulating a heat transfer fluid through channels drilled in the electrodes bodies. H- ions extraction through a single aperture and 21 apertures was performed and studied. A stable H- beam with the current up to 0.7 A, energy up to 74 kV, and pulse duration up to 7 s was routinely obtained.

• OSTI ID: 22391425
• Journal Information: AIP Conference Proceedings, Vol. 1655, Issue 1; Conference: NIBS 2014: 4. International Symposium on Negative Ions, Beams and Sources, Garching (Germany), 6-10 Oct 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
APERTURES
BEAM CURRENTS
BEAM PRODUCTION
CESIUM
COOLING
ELECTRONS
HEAT TRANSFER FLUIDS
HEATING
HYDROGEN IONS 1 MINUS
ION BEAMS
MAGNETIC CONFINEMENT
MAGNETIC FILTERS
OPTICAL SYSTEMS
PERMANENT MAGNETS
PLASMA
RADIOWAVE RADIATION
SURFACES