Optimization of a compact multicusp He+ ion source for double-charge-exchanged He- beam

K. Shinto, H. Sugawara, M. Takenaga, S. Takeuchi, N. Tanaka, A. Okamoto, S. Kitajima, M. Sasao, M. Nishiura, M. Wada

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11 Citations (Scopus)


Preliminary test bench results to study the beam quality extracted from a compact multicusp He+ ion source for He- beam production are reported. The bench is a part of the beam diagnostic system equipped with energy analyzers, emittance meters, focusing beam optics, an alkali-metal charge-exchange cell, a neutral particle energy analyzer, a double focusing magnetic momentum analyzer, a postaccelerator, and a drift tube. Utilizing the front end of the bench, the transverse emittance and the energy distribution function of a He+ beam extracted from a multi-line-cusp magnetic-field ion source 8 cm in diameter and 9 cm in length were measured. The results indicated that improvements in both formation of the plasma meniscus and reinforcement of pumping in the extraction region are necessary to produce a higher brightness He+ beam.

Original languageEnglish
Article number03B512
JournalReview of Scientific Instruments
Issue number3
Publication statusPublished - 2006 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation


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