Development of an energetic He0 beam for alpha particle diagnostics on ITER

M. Sasao, N. Tanaka, M. Kisaki, T. Nagamura, K. Terai, A. Okamoto, Sumio Kitajima, T. Kobuchi, O. Kaneko, K. Tsumori, K. Shinto, M. Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Confined alpha particles can be measurement in ITER by injecting energetic He0 (ground state) beam to neutralize alphas in the plasma. It was experimentally confirmed that auto-detachment of a He- beam produces a ground state He0 beam through the Time Of Flight (TOF) neuralization. A full size strong-focusing He+ ion source was developed, and a beam current higher than 2A was achieved with the minimum beam radius of 11.3 mm, at the beam energy of 20 - 25 keV, which is suitable to be converted to He- in an alkali vapour.

Original languageEnglish
Title of host publication37th EPS Conference on Plasma Physics 2010, EPS 2010
Pages173-176
Number of pages4
Publication statusPublished - 2010 Dec 1
Event37th EPS Conference on Plasma Physics 2010, EPS 2010 - Dublin, Ireland
Duration: 2010 Jun 212010 Jun 25

Publication series

Name37th EPS Conference on Plasma Physics 2010, EPS 2010
Volume1

Other

Other37th EPS Conference on Plasma Physics 2010, EPS 2010
CountryIreland
CityDublin
Period10/6/2110/6/25

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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