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Local axisymmetry-breaking–induced transition of trapped-particle orbit and loss channels in quasi-axisymmetric stellarators
http://hdl.handle.net/10655/00013465
http://hdl.handle.net/10655/000134659a7fa2e3-b790-4fcf-8a18-f3769bf12fa8
名前 / ファイル | ライセンス | アクション |
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13535_ EPL (2.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-08-29 | |||||
タイトル | ||||||
タイトル | Local axisymmetry-breaking–induced transition of trapped-particle orbit and loss channels in quasi-axisymmetric stellarators | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
YANG, Lang
× YANG, Lang× LIU, Haifeng× SHIMIZU, Akihiro× XU, Yuhong× WANG, Xianqu× LIU, Hai× TANG, Changjian× LI, Yangbo× LIU, Jinmao× LUO, Yang× XIONG, Guozhen× SU, Chunyan× KINOSHITA, Shigeyoshi× ISOBE, Mitsutaka× OKAMURA, Shoichi× HUANG, Jie× ZHANG, Xin× YIN, Dapeng× WAN, Yi× CFQS team |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The transition of trapped-particle orbit topologies has been investigated in quasi-axisymmetric (QA) configurations, such as the Chinese First Quasi-axisymmetric Stellarator (CFQS). It is found that the axisymmetry-breaking phenomenon in QA configurations is of great significance at some specific locations, which could easily induce blocked particles to transit into localized particles. A novel aspect is presented to interpret the transition mechanism of trapped-particle orbit topologies in this paper, i.e., as the amplitudes of non-axisymmetric field increase along the radius direction, the region of large toroidal inhomogeneity is gradually generated, which makes the length of the trapped-particle trajectory substantially short, and hence, may restrict particles to a single helical field period. Meanwhile, at such locations the "pseudo-axisymmetric" field results in coupling of the maximum radial drift and the minimum poloidal drift, which enables the transition of trapped-particle orbit topologies considerably and forms specific loss channels, degrading plasma confinement. These results may shed light on the optimization of QA configurations via avoidance of such coupling with respect to energetic particle confinement. Moreover, this work is also relevant to the generation of inhomogeneity of particle flux deposition on the devertor plates. | |||||
書誌情報 |
Europhysics Letters 巻 129, 号 3, p. 35001, 発行日 2020-03-04 |
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書誌的事項 | ||||||
This article is corrected by 2020 EPL 130 29902 | ||||||
出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | European Physical Society | |||||
出版者 | ||||||
出版者 | Società Italiana di Fisica | |||||
出版者 | ||||||
出版者 | EDP Sciences | |||||
出版者 | ||||||
出版者 | EPL Association | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0295-5075 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12194839 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1209/0295-5075/129/35001 | |||||
権利 | ||||||
権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Europhysics Letters. | |||||
権利 | ||||||
権利情報 | IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. | |||||
権利 | ||||||
権利情報 | The Version of Record is available online at https://doi.org/10.1209/0295-5075/129/35001. | |||||
情報源 | ||||||
関連名称 | Lang Yang et al 2020 EPL 129 35001 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1209/0295-5075/129/35001 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
13535 |