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Title: Development of the negative ion beams relevant to ITER and JT-60SA at Japan Atomic Energy Agency

In order to realize negative ion sources and accelerators to be applicable to International Thermonuclear Experimental Reactor and JT-60 Super Advanced, a large cesium (Cs)-seeded negative ion source and a multi-aperture and multi-stage electric acceleration have been developed at Japan Atomic Energy Agency (JAEA). Long pulse production and acceleration of the negative ion beams have been independently carried out. The long pulse production of the high current beams has achieved 100 s at the beam current of 15 A by modifying the JT-60 negative ion source. The pulse duration time is increased three times longer than that before the modification. As for the acceleration, a pulse duration time has been also extended two orders of magnitudes from 0.4 s to 60 s. The developments of the negative ion source and acceleration at JAEA are well in progress towards the realization of the negative ion sources and accelerators for fusion applications.
Authors:
; ; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3]
  1. Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913 (Japan)
  2. Saitama University, Saitama, Saitama-ken 338-8570 (Japan)
  3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
22482986
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; ACCELERATION; ACCELERATORS; ANIONS; APERTURES; BEAM CURRENTS; ITER TOKAMAK; JAEA; JT-60 TOKAMAK; PULSES