Response of negative ion beamlet to RF field in beam extraction region
Beam-focusing characteristics of negative ion beams have been experimentally investigated with a superimposition of a controlled perturbation of RF field in a filament-arc discharge negative ion source. Oscillations of a negative-ion beamlet width and axis responding to the RF perturbation were obse...
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| creator | Nagaoka, Kenichi Nakano, Haruhisa Hamajima, Taiga Nakamoto, Ryoya Tsumori, Katsuyoshi Osakabe, Masaki Ikeda, Katsunori Kisaki, Masashi Miyamoto, Kenji Takahashi, Kazunori Fantz, Ursel |
| description | Beam-focusing characteristics of negative ion beams have been experimentally
investigated with a superimposition of a controlled perturbation of RF field in
a filament-arc discharge negative ion source. Oscillations of a negative-ion
beamlet width and axis responding to the RF perturbation were observed, which
may be a cause of the larger beam divergence angle of the RF negative ion
source for ITER. It is pointed out that the oscillation of the beamlet width
depends on the perveance and on the RF frequency such that the oscillation is
suppressed at perveance-matched conditions and at low RF frequency. |
| doi_str_mv | 10.48550/arxiv.2312.15749 |
| format | Article |
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investigated with a superimposition of a controlled perturbation of RF field in
a filament-arc discharge negative ion source. Oscillations of a negative-ion
beamlet width and axis responding to the RF perturbation were observed, which
may be a cause of the larger beam divergence angle of the RF negative ion
source for ITER. It is pointed out that the oscillation of the beamlet width
depends on the perveance and on the RF frequency such that the oscillation is
suppressed at perveance-matched conditions and at low RF frequency.</description><identifier>DOI: 10.48550/arxiv.2312.15749</identifier><language>eng</language><subject>Physics - Accelerator Physics ; Physics - Plasma Physics</subject><creationdate>2023-12</creationdate><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2312.15749$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2312.15749$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Nagaoka, Kenichi</creatorcontrib><creatorcontrib>Nakano, Haruhisa</creatorcontrib><creatorcontrib>Hamajima, Taiga</creatorcontrib><creatorcontrib>Nakamoto, Ryoya</creatorcontrib><creatorcontrib>Tsumori, Katsuyoshi</creatorcontrib><creatorcontrib>Osakabe, Masaki</creatorcontrib><creatorcontrib>Ikeda, Katsunori</creatorcontrib><creatorcontrib>Kisaki, Masashi</creatorcontrib><creatorcontrib>Miyamoto, Kenji</creatorcontrib><creatorcontrib>Takahashi, Kazunori</creatorcontrib><creatorcontrib>Fantz, Ursel</creatorcontrib><title>Response of negative ion beamlet to RF field in beam extraction region</title><description>Beam-focusing characteristics of negative ion beams have been experimentally
investigated with a superimposition of a controlled perturbation of RF field in
a filament-arc discharge negative ion source. Oscillations of a negative-ion
beamlet width and axis responding to the RF perturbation were observed, which
may be a cause of the larger beam divergence angle of the RF negative ion
source for ITER. It is pointed out that the oscillation of the beamlet width
depends on the perveance and on the RF frequency such that the oscillation is
suppressed at perveance-matched conditions and at low RF frequency.</description><subject>Physics - Accelerator Physics</subject><subject>Physics - Plasma Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotj8tqwzAQRbXpoqT9gK6iH7Ar6-lZllC3hUAhZG9G8igIHDvIIqR_3ybp6sDlcuAw9tKIWrfGiFfMl3SupWpk3Rin4ZF1O1pO87QQnyOf6IAlnYmneeKe8DhS4WXmu47HROPA033mdCkZQ7neMh3-8MQeIo4LPf9zxfbd-37zWW2_P742b9sKrYPKRgCM2gtDg9faeSkjWK0NGuWcBPAittQGNVAQwkppAipwDUVpQfqgVmx9195C-lNOR8w__TWovwWpX6ehRWE</recordid><startdate>20231225</startdate><enddate>20231225</enddate><creator>Nagaoka, Kenichi</creator><creator>Nakano, Haruhisa</creator><creator>Hamajima, Taiga</creator><creator>Nakamoto, Ryoya</creator><creator>Tsumori, Katsuyoshi</creator><creator>Osakabe, Masaki</creator><creator>Ikeda, Katsunori</creator><creator>Kisaki, Masashi</creator><creator>Miyamoto, Kenji</creator><creator>Takahashi, Kazunori</creator><creator>Fantz, Ursel</creator><scope>GOX</scope></search><sort><creationdate>20231225</creationdate><title>Response of negative ion beamlet to RF field in beam extraction region</title><author>Nagaoka, Kenichi ; Nakano, Haruhisa ; Hamajima, Taiga ; Nakamoto, Ryoya ; Tsumori, Katsuyoshi ; Osakabe, Masaki ; Ikeda, Katsunori ; Kisaki, Masashi ; Miyamoto, Kenji ; Takahashi, Kazunori ; Fantz, Ursel</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a679-6f99af4b05edb447b22f96445a5377299b0f8e8c3dec006225ca3971ef2692bc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Physics - Accelerator Physics</topic><topic>Physics - Plasma Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Nagaoka, Kenichi</creatorcontrib><creatorcontrib>Nakano, Haruhisa</creatorcontrib><creatorcontrib>Hamajima, Taiga</creatorcontrib><creatorcontrib>Nakamoto, Ryoya</creatorcontrib><creatorcontrib>Tsumori, Katsuyoshi</creatorcontrib><creatorcontrib>Osakabe, Masaki</creatorcontrib><creatorcontrib>Ikeda, Katsunori</creatorcontrib><creatorcontrib>Kisaki, Masashi</creatorcontrib><creatorcontrib>Miyamoto, Kenji</creatorcontrib><creatorcontrib>Takahashi, Kazunori</creatorcontrib><creatorcontrib>Fantz, Ursel</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Nagaoka, Kenichi</au><au>Nakano, Haruhisa</au><au>Hamajima, Taiga</au><au>Nakamoto, Ryoya</au><au>Tsumori, Katsuyoshi</au><au>Osakabe, Masaki</au><au>Ikeda, Katsunori</au><au>Kisaki, Masashi</au><au>Miyamoto, Kenji</au><au>Takahashi, Kazunori</au><au>Fantz, Ursel</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Response of negative ion beamlet to RF field in beam extraction region</atitle><date>2023-12-25</date><risdate>2023</risdate><abstract>Beam-focusing characteristics of negative ion beams have been experimentally
investigated with a superimposition of a controlled perturbation of RF field in
a filament-arc discharge negative ion source. Oscillations of a negative-ion
beamlet width and axis responding to the RF perturbation were observed, which
may be a cause of the larger beam divergence angle of the RF negative ion
source for ITER. It is pointed out that the oscillation of the beamlet width
depends on the perveance and on the RF frequency such that the oscillation is
suppressed at perveance-matched conditions and at low RF frequency.</abstract><doi>10.48550/arxiv.2312.15749</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Accelerator Physics Physics - Plasma Physics |
| title | Response of negative ion beamlet to RF field in beam extraction region |
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