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

doi:10.1063/1.1145055

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 journal › Article › peer-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 language	English
Pages (from-to)	1195-1197
Number of pages	3
Journal	Review of Scientific Instruments
Volume	65
Issue number	4
DOIs	https://doi.org/10.1063/1.1145055
Publication status	Published - 1994
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

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title = "High current H- ion production in cesium seeded large ion sources",

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.",

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

year = "1994",

doi = "10.1063/1.1145055",

language = "English",

volume = "65",

pages = "1195--1197",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

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TY - JOUR

T1 - High current H- ion production in cesium seeded large ion sources

AU - Tsumori, K.

AU - Ando, A.

AU - Takeiri, Y.

AU - Kaneko, O.

AU - Oka, Y.

AU - Okuyama, T.

AU - Kojima, H.

AU - Yamashita, Y.

AU - Kawamoto, T.

AU - Akiyama, R.

AU - Kuroda, T.

PY - 1994

Y1 - 1994

N2 - 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.

AB - 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.

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