Development of high current hydrogen negative ion source for NBI in NIFS

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.51289· OSTI ID:451318

Kuroda, T; Kaneko, O; Oka, Y; Osakabe, M; Takeiri, Y; Tsumori, K; Ando, A; Akiyama, R; Asano, E; Takanashi, T; Hamabe, M ^[1]

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1. National Institute for Fusion Science, Nagoya 464-01 (Japan)

High current hydrogen negative ion source development has been intensively carried out for neutral beam injector for Large Helical Device (LHD), in which ion source capable of delivering a negative ion beam of 45 A at a beam energy of 125 keV is required. A multicups ion source of 1/3 scale of the prototype source in NBI for LHD and a large rf ion source has been studied for negative ion production, beam extraction and acceleration. A total H{sup {minus}} current of 16 A is obtained at the 1/3 scale source with Cs seeding operation. The H{sup {minus}} ion current is proportional to the input arc power. A 13.6 A of H{sup {minus}} ion beam is accelerated to 125 keV at the two stage acceleration. A divergent angle of 9 mrad is obtained at multi beam. Preliminary experimental results of r.f. ion source are described. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 451318
• Report Number(s): CONF-9510304--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 380; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM CURRENTS
BEAM EXTRACTION
CESIUM ADDITIONS
DESIGN
HYDROGEN 1 MINUS BEAMS
ION SOURCES
KEV RANGE 100-1000
PERFORMANCE
PLASMA SEEDING