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The filter strength is 70 G in the center and the line-integrated filter strength is 850 G cm, which keeps the low electron temperature in the extraction region.  Strong cusp magnetic field, 1.8 kG on the chamber surface, is generated for improvement of the plasma confinement.  These resulted in the high arc efficiency at the low operational gas pressure.  A 16.2 A of the H ^- ion current with the energy of 47 keV was obtained at the arc efficiency of 0.1 A/kW at the gas pressure of 3.8 mTorr in the cesium-mode operation.  The magnetic field in the extraction gap is also strong,  450 G, for the electron suppression.  The ratio of the extraction to the negative ion currents was less than 2.2 at the gas pressure of 3 mTorr.  The two-stage acceleration was tried, and a 13.6 A of the H^- ion beam was accelerated to 125 keV.\"", "subitem_description_type": "Abstract"}]}, "item_5_source_id_10": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0915-633X", "subitem_source_identifier_type": "ISSN"}]}, "item_5_text_25": {"attribute_name": "登録情報", "attribute_value_mlt": [{"subitem_text_value": "Made available in DSpace on 2010-02-05T10:16:06Z (GMT). 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  1. NIFS Series
  2. NIFS Report

Development of an Intense Negative Hydrogen Ion Source with a Wide-Range of External Magnetic Filter Field

http://hdl.handle.net/10655/2341
http://hdl.handle.net/10655/2341
b2ce2757-15dc-445a-9f2d-8c88929ccbf2
Item type 研究報告書 / Research Paper(1)
公開日 2010-02-05
タイトル
言語 en
タイトル Development of an Intense Negative Hydrogen Ion Source with a Wide-Range of External Magnetic Filter Field
言語
言語 eng
キーワード
言語 en
主題Scheme Other
主題 negative hydrogen ion source
キーワード
言語 en
主題Scheme Other
主題 negative-ion-based NBI
キーワード
言語 en
主題Scheme Other
主題 external magnetic filter
キーワード
言語 en
主題Scheme Other
主題 high arc efficiency
キーワード
言語 en
主題Scheme Other
主題 low gas pressure operation
キーワード
言語 en
主題Scheme Other
主題 two-stage acceleration
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_18ws
資源タイプ research report
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 "Takeiri, Y.

× "Takeiri, Y.

WEKO 64595

en "Takeiri, Y.

Search repository
Ando, A.

× Ando, A.

WEKO 64596

en Ando, A.

Search repository
Kaneko, O.

× Kaneko, O.

WEKO 64597

en Kaneko, O.

Search repository
Oka, Y.

× Oka, Y.

WEKO 64598

en Oka, Y.

Search repository
Tsumori, K.

× Tsumori, K.

WEKO 64599

en Tsumori, K.

Search repository
Akiyama, R.

× Akiyama, R.

WEKO 64600

en Akiyama, R.

Search repository
Asano, E.

× Asano, E.

WEKO 64601

en Asano, E.

Search repository
Kawamoto, T.

× Kawamoto, T.

WEKO 64602

en Kawamoto, T.

Search repository
Kuroda, T.

× Kuroda, T.

WEKO 64603

en Kuroda, T.

Search repository
Tanaka, M.

× Tanaka, M.

WEKO 64604

en Tanaka, M.

Search repository
Kawakami, H."

× Kawakami, H."

WEKO 64605

en Kawakami, H."

Search repository
抄録
内容記述タイプ Abstract
内容記述 "An intense negative hydrogen ion source has been developed, which has a strong external magnetic filter field in the wide area of 35 cm x 62 cm produced by a pair of permanent magnet rows located with 35.4 cm separation. The filter strength is 70 G in the center and the line-integrated filter strength is 850 G cm, which keeps the low electron temperature in the extraction region. Strong cusp magnetic field, 1.8 kG on the chamber surface, is generated for improvement of the plasma confinement. These resulted in the high arc efficiency at the low operational gas pressure. A 16.2 A of the H ^- ion current with the energy of 47 keV was obtained at the arc efficiency of 0.1 A/kW at the gas pressure of 3.8 mTorr in the cesium-mode operation. The magnetic field in the extraction gap is also strong, 450 G, for the electron suppression. The ratio of the extraction to the negative ion currents was less than 2.2 at the gas pressure of 3 mTorr. The two-stage acceleration was tried, and a 13.6 A of the H^- ion beam was accelerated to 125 keV."
書誌情報 en : Research Report NIFS-Series

発行日 1994-09-01
報告書番号
NIFS-307
ISSN
収録物識別子タイプ ISSN
収録物識別子 0915-633X
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