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Construction and commissioning of the JT-60SA tokamak system
https://repo.qst.go.jp/records/80458
https://repo.qst.go.jp/records/804581f415592-5da6-4e65-a7c4-f8ab2cbde012
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-11 | |||||
| タイトル | ||||||
| タイトル | Construction and commissioning of the JT-60SA tokamak system | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
Matsunaga, Go
× Matsunaga, Go× Shibama, Yuusuke× Takechi, Manabu× Hamada, Kazuya× Okano, Fuminori× Yagiyuu, Jiyunichi× Kaminaga, Atsushi× Nishiyama, Tomokazu× Sasajima, Tadayuki× Miyo, Yasuhiko× Moriyama, Shinichi× Ide, Shunsuke× Hanada, Masaya× Tomarchio, Valerio× Di Pietro, Enrico× JT-60SA, Team× Matsunaga, Go× Shibama, Yuusuke× Takechi, Manabu× Hamada, Kazuya× Okano, Fuminori× Yagiyuu, Jiyunichi× Kaminaga, Atsushi× Nishiyama, Tomokazu× Sasajima, Tadayuki× Miyo, Yasuhiko× Moriyama, Shinichi× Ide, Shunsuke× Hanada, Masaya |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The construction of the JT-60 Super Advanced (JT-60SA) tokamak has been completed after seven years. In parallel to the tokamak construction, peripheral devices such as vacuum pumping system, gas baking system, wall cleaning system, and so on, that are indispensable for tokamak operation, have been modified for reuse or newly developed. In the JT-60SA, an ultra-high vacuum up to ~10-6Pa is to be realized by eight turbomolecular pumps with a total pumping speed of 6m3/sec for a vacuum vessel. To achieve an ultra-high vacuum condition, a baking operation with 200 ℃ is planned for desorbing water by Nitrogen gas circulation into a double shell of the vacuum vessel. The gas circulation system has a high flow rate of ~18,000 Nm3/h for 200 ℃ baking with four blowers and a heater. Since a radiant heat from the vacuum vessel will be absorbed by an 80 K thermal shield, the system is also utilized to keep vacuum vessel temperature 50 ℃. Moreover, a glow discharge system has been developed for wall conditioning. The system contains three electrodes installed into the vacuum vessel and power supplies with ~3A/600V. The system makes Helium glow discharge where impurities such as Oxygen could be effectively spattered from graphite first wall. In this paper, the completion of JT-60SA construction and the peripheral devices will be reported, focusing on the results of commissioning before the initial operation. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 31st Symposium of Fusion Technology (SOFT2020) | |||||
| 発表年月日 | ||||||
| 日付 | 2020-09-23 | |||||
| 日付タイプ | Issued | |||||
