Operation of RF driven Negative Ion Source in a Pure-Hydrogen Mode

被引：5
|
作者：
Abdrashitov, G. [1 ]
Belchenko, Yu. [1 ]
Ivanov, A. A. [1 ,2 ]
Gusev, I. [1 ]
Senkov, D. [1 ]
Sanin, A. [1 ]
Shikhovtsev, I. [1 ]
Sotnikov, O. [1 ,2 ]
Kondakov, A. [1 ]
机构：
[1] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
FOURTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2014) | 2015年 / 1655卷
关键词：
ACCELERATORS; FUSION;
D O I：
10.1063/1.4916451
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The production of negative hydrogen ions in the radio-frequency driven long-pulsed source with external antenna is studied. RF drivers with various geometry of external antenna, Faraday shield and magnets at the rear flange were examined. H- beam extraction through the single emission aperture was performed in the source pure-hydrogen mode with no external seed of alkali additives. H- beam with ion emission current density up to 5 mA/cm(2) and energy up to 75 keV was regularly obtained in the 1 s pulses of the pure-hydrogen mode. The regular temporal increase of H- ion production due to deposition of impurities on the plasma grid surface was recorded. The H- emission current density increased up to 9 mA/cm(2) in this case.
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页数：9
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