Multi-slit triode ion optical system with ballistic beam focusing

Multi-slit triode ion-optical systems with spherical electrodes are of interest for formation of intense focused neutral beams for plasma heating. At present, two versions of focusing multi-slit triode ion optical system are developed. The first ion optical system forms the proton beam with 15 keV e...

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Bibliographic Details
Published in:Review of scientific instruments 2016-02, Vol.87 (2), p.02B303-02B303
Main Authors: Davydenko, V, Amirov, V, Gorbovsky, A, Deichuli, P, Ivanov, A, Kolmogorov, A, Kapitonov, V, Mishagin, V, Shikhovtsev, I, Sorokin, A, Stupishin, N, Karpushov, A N, Smirnov, A, Uhlemann, R
Format: Article
Language:English
Subjects:
CURRENTS
DEUTERIUM
Divergence
ELECTRODES
FOCUSING
Injectors
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
IONS
KEV RANGE 10-100
Microscopes
Neutral beams
OPTICAL SYSTEMS
PLASMA HEATING
PROTON BEAMS
Scientific apparatus & instruments
Slits
SPHERICAL CONFIGURATION
TCV TOKAMAK
Tokamak devices
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Summary:Multi-slit triode ion-optical systems with spherical electrodes are of interest for formation of intense focused neutral beams for plasma heating. At present, two versions of focusing multi-slit triode ion optical system are developed. The first ion optical system forms the proton beam with 15 keV energy, 140 A current, and 30 ms duration. The second ion optical system is intended for heating neutral beam injector of Tokamak Configuration Variable (TCV). The injector produces focused deuterium neutral beam with 35 keV energy, 1 MW power, and 2 s duration. In the later case, the angular beam divergence of the neutral beam is 20-22 mrad in the direction across the slits of the ion optical system and 12 mrad in the direction along the slits.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4931788