Development of a He- and He0 beam source for alpha particle measurement in a burning plasma

N. Tanaka, M. Sasao, K. Terai, A. Okamoto, S. Kitajima, H. Yamaoka, M. Wada

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1 Citation (Scopus)


Proof of principle experiments of neutral helium beam production for alpha particle diagnostics was carried out on a test stand. Negative helium ions were produced in the Li charge exchange cell, in which stable and long time operation was possible. He- beam was accelerated to 157 keV. Finally, He 0 beam was successfully produced after the flight in the drift-tube through the auto-electron-detachment process from He- to He 0. A neutral beam detector using a pyroelectric device was also developed to measure He0 beam intensity. The metastable component in the neutral helium beam was found to be less than 2.

Original languageEnglish
Article number02B115
JournalReview of Scientific Instruments
Issue number2
Publication statusPublished - 2012 Feb

ASJC Scopus subject areas

  • Instrumentation


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