High current H- ion production in cesium seeded large ion sources

K. Tsumori, A. Ando, Y. Takeiri, O. Kaneko, Y. Oka, T. Okuyama, H. Kojima, Y. Yamashita, T. Kawamoto, R. Akiyama, T. Kuroda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The characteristics of a large negative-ion source with external filter is investigated for the neutral-beam injection system in a large helical device. The magnetic cusp field is set up at almost the same strength as that in our well optimized 1/3 ion source with rod-type magnetic filter. An H- ion current of 5.2 A is extracted from the ion source with Cs seeding. The H- current corresponds to 19.7 mA/cm2, and the value is comparable to the current density obtained using the 1/3 scaled ion source with a rod-type magnetic filter at the same extraction voltage. In low operating pressure, the ion source with the external filter has a better performance on the extraction of H- ions.

Original languageEnglish
Pages (from-to)1195-1197
Number of pages3
JournalReview of Scientific Instruments
Volume65
Issue number4
DOIs
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation

Fingerprint Dive into the research topics of 'High current H<sup>-</sup> ion production in cesium seeded large ion sources'. Together they form a unique fingerprint.

Cite this