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Conceptual design of JT-60SA edge Thomson scattering diagnostic
https://repo.qst.go.jp/records/78419
https://repo.qst.go.jp/records/784193e3fb439-2e51-4bed-9c7f-f19223337e3b
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-01-14 | |||||
タイトル | ||||||
タイトル | Conceptual design of JT-60SA edge Thomson scattering diagnostic | |||||
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 | |||||
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 |
Pasqualotto, Roberto
× Pasqualotto, Roberto× Tojo, Hiroshi× Fassina, Alessandro× Giudicotti, Leonardo× Nardino, Vanni× Oyama, Naoyuki× Pelli, Stefano× Raimondi, Valentina× Ricciarini, Sergio× Soare, Sorin× Davis, Sam× Sozzi, Carlo× Hiroshi, Tojo× Naoyuki, Oyama |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | JT-60SA will complement ITER in resolving key issues to finally decide an acceptable DEMO design. Diagnostics play a key role in this mission. The electron temperature and density profiles are measured by a core and an edge Thomson scattering (TS) diagnostics with high spatial resolution, needed to identify the pedestal parameters and small profile structures. The two systems use a common tangential Nd:YAG laser beam path in the plasma equatorial plane. The collection optics for the edge system (low field side) is hosted in a lower oblique port and that for the core system in a horizontal port. The optics fit in the port plug tube and image the scattering volumes into an array of fiber bundles. They both are exposed to a high neutron dose of 10^16 n/cm^2 over 13 years of operation. The optics are supported by a mechanical structure decoupled from the cryostat. A set of filter polychromators with avalanche photodiode (APD) detectors spectrally analyze the scattered radiation. The development of the TS systems is carried out by a joint Japan-EU team. The conceptual design of the edge TS system is presented here. Simulations of the TS signals show acceptable accuracy down to 1 × 10^19 m^−3 electron density, sufficient to measure the edge gradient and even a small region outside the separatrix. | |||||
書誌情報 |
Journal of Instrumentation 巻 15, p. C01011, 発行日 2020-01 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1748-0221 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1748-0221/15/01/C01011 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1748-0221/15/01/C01011 |