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Title: 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 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.
Authors:
; ; ; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Budker Institute of Nuclear Physics, Novosibirsk 630090 (Russian Federation)
  2. Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas (CRPP), CH-1015 Lausanne (Switzerland)
  3. Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)
  4. Institute of Energy and Climate Research-Plasma Physics, Research Center Juelich, 52425 Juelich (Germany)
Publication Date:
OSTI Identifier:
22482968
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CURRENTS; DEUTERIUM; ELECTRODES; FOCUSING; IONS; KEV RANGE 10-100; OPTICAL SYSTEMS; PLASMA HEATING; PROTON BEAMS; SPHERICAL CONFIGURATION; TCV TOKAMAK