Strongly focused He+ beam source for alpha particle measurement at ITER

K. Shinto, Atsushi Okamoto, S. Kitajima, M. Sasao, M. Nishiura, O. Kaneko, S. Kiyama, H. Sakakita, Y. Hirano, M. Wada

Research output: Contribution to conferencePaperpeer-review

4 Citations (Scopus)


A He+ beam source for a high energy He0 beam probe system to diagnose fusion produced alphas in thermonuclear fusion plasma has been assembled on a test stand for beam parameter measurements. The ion source is equipped with a beam extraction system made of three concaved electrodes. Across the 100 mm diameter extraction area 300 beamlets are formed through 4 mm apertures. Converging beamlets directed to an alkali metal charge exchange cell of the 35 mm entrance opening intersect at the position 750 mm down stream of the extraction electrodes. The test stand has several beam diagnostic apparatuses. The total beam current, the beam profile and the beam emittance are being measured to design a proper alkali metal vapour cell for a He- beam production by a double-charge-exchange process, and a beam transport line for the post beam acceleration system up to MeV energy region.

Original languageEnglish
Number of pages3
Publication statusPublished - 2006 Jan 1
Event10th European Particle Accelerator Conference, EPAC 2006 - Edinburgh, United Kingdom
Duration: 2006 Jun 262006 Jun 30


Other10th European Particle Accelerator Conference, EPAC 2006
Country/TerritoryUnited Kingdom

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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