QUEST experiments towards steady state operation of spherical tokamaks

Kazuaki Hanada; Hideki Zushi; Hiroshi Idei; Kazuo Nakamura; Masaki Ishiguro; Saya Tashima; Evgeniya Kalinnikova; Mizuki Sakamoto; Makoto Hasegawa; Akihide Fujisawa; Konosuke Sato; Naoaki Yoshida; Hideo Watanabe; Kazutoshi Tokunaga; Yoshihiko Nagashima; Aki Higashijima; Shoji Kawasaki; Hisatoshi Nakashima; Haiqing Liu; Osamu Mitarai; Takashi Maekawa; Atsushi Fukuyama; Yuichi Takase; Jinping Qian

doi:10.1541/ieejfms.132.490

QUEST experiments towards steady state operation of spherical tokamaks

Kazuaki Hanada, Hideki Zushi, Hiroshi Idei, Kazuo Nakamura, Masaki Ishiguro, Saya Tashima, Evgeniya Kalinnikova, Mizuki Sakamoto, Makoto Hasegawa, Akihide Fujisawa, Konosuke Sato, Naoaki Yoshida, Hideo Watanabe, Kazutoshi Tokunaga, Yoshihiko Nagashima, Aki Higashijima, Shoji Kawasaki, Hisatoshi Nakashima, Haiqing Liu, Osamu MitaraiTakashi Maekawa, Atsushi Fukuyama, Yuichi Takase, Jinping Qian

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Recent progress towards SSO of a spherical tokamak (ST) on QUEST is introduced. Zero-dimensional calculations of particle balance for QUEST experiment, refresh wall, and hot wall were performed showing that a SSO time of more than 1000s is required to obtain reliable results in regard to particle balance. Basic features of blobs were investigated in electron cyclotron resonance (ECR) heated plasmas. Formation and maintenance of a single-null divertor configuration was successfully obtained. Plasma duration in the divertor configuration was limited by out-gassing from a non-water-cooled first wall. Design studies for a hot wall are introduced.

Original language	English
Pages (from-to)	490-498+6
Journal	IEEJ Transactions on Fundamentals and Materials
Volume	132
Issue number	7
DOIs	https://doi.org/10.1541/ieejfms.132.490
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1541/ieejfms.132.490

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Hanada, K., Zushi, H., Idei, H., Nakamura, K., Ishiguro, M., Tashima, S., Kalinnikova, E., Sakamoto, M., Hasegawa, M., Fujisawa, A., Sato, K., Yoshida, N., Watanabe, H., Tokunaga, K., Nagashima, Y., Higashijima, A., Kawasaki, S., Nakashima, H., Liu, H., ... Qian, J. (2012). QUEST experiments towards steady state operation of spherical tokamaks. IEEJ Transactions on Fundamentals and Materials, 132(7), 490-498+6. https://doi.org/10.1541/ieejfms.132.490

Hanada, K, Zushi, H, Idei, H, Nakamura, K, Ishiguro, M, Tashima, S, Kalinnikova, E, Sakamoto, M, Hasegawa, M , Fujisawa, A, Sato, K, Yoshida, N, Watanabe, H , Tokunaga, K , Nagashima, Y, Higashijima, A, Kawasaki, S, Nakashima, H, Liu, H, Mitarai, O, Maekawa, T, Fukuyama, A, Takase, Y & Qian, J 2012, 'QUEST experiments towards steady state operation of spherical tokamaks', IEEJ Transactions on Fundamentals and Materials, vol. 132, no. 7, pp. 490-498+6. https://doi.org/10.1541/ieejfms.132.490

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title = "QUEST experiments towards steady state operation of spherical tokamaks",

abstract = "Recent progress towards SSO of a spherical tokamak (ST) on QUEST is introduced. Zero-dimensional calculations of particle balance for QUEST experiment, refresh wall, and hot wall were performed showing that a SSO time of more than 1000s is required to obtain reliable results in regard to particle balance. Basic features of blobs were investigated in electron cyclotron resonance (ECR) heated plasmas. Formation and maintenance of a single-null divertor configuration was successfully obtained. Plasma duration in the divertor configuration was limited by out-gassing from a non-water-cooled first wall. Design studies for a hot wall are introduced.",

author = "Kazuaki Hanada and Hideki Zushi and Hiroshi Idei and Kazuo Nakamura and Masaki Ishiguro and Saya Tashima and Evgeniya Kalinnikova and Mizuki Sakamoto and Makoto Hasegawa and Akihide Fujisawa and Konosuke Sato and Naoaki Yoshida and Hideo Watanabe and Kazutoshi Tokunaga and Yoshihiko Nagashima and Aki Higashijima and Shoji Kawasaki and Hisatoshi Nakashima and Haiqing Liu and Osamu Mitarai and Takashi Maekawa and Atsushi Fukuyama and Yuichi Takase and Jinping Qian",

year = "2012",

doi = "10.1541/ieejfms.132.490",

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AU - Hanada, Kazuaki

AU - Zushi, Hideki

AU - Idei, Hiroshi

AU - Nakamura, Kazuo

AU - Ishiguro, Masaki

AU - Tashima, Saya

AU - Kalinnikova, Evgeniya

AU - Sakamoto, Mizuki

AU - Hasegawa, Makoto

AU - Fujisawa, Akihide

AU - Sato, Konosuke

AU - Yoshida, Naoaki

AU - Watanabe, Hideo

AU - Tokunaga, Kazutoshi

AU - Nagashima, Yoshihiko

AU - Higashijima, Aki

AU - Kawasaki, Shoji

AU - Nakashima, Hisatoshi

AU - Liu, Haiqing

AU - Mitarai, Osamu

AU - Maekawa, Takashi

AU - Fukuyama, Atsushi

AU - Takase, Yuichi

AU - Qian, Jinping

PY - 2012

Y1 - 2012

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AB - Recent progress towards SSO of a spherical tokamak (ST) on QUEST is introduced. Zero-dimensional calculations of particle balance for QUEST experiment, refresh wall, and hot wall were performed showing that a SSO time of more than 1000s is required to obtain reliable results in regard to particle balance. Basic features of blobs were investigated in electron cyclotron resonance (ECR) heated plasmas. Formation and maintenance of a single-null divertor configuration was successfully obtained. Plasma duration in the divertor configuration was limited by out-gassing from a non-water-cooled first wall. Design studies for a hot wall are introduced.

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IS - 7

ER -

QUEST experiments towards steady state operation of spherical tokamaks

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