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Journal Articles

Effect of resistivity profile on current decay time of initial phase of current quench in neon-gas-puff inducing disruptions of JT-60U

Kawakami, Sho*; Shibata, Yoshihide; Watanabe, Kiyomasa*; Ono, Noriyasu*; Isayama, Akihiko; Takizuka, Tomonori*; Kawano, Yasunori; Okamoto, Masaaki*

Physics of Plasmas, 20(11), p.112507_1 - 112507_6, 2013/11

https://doi.org/10.1063/1.4830103

Times Cited Count：2 Percentile：8.92(Physics, Fluids & Plasmas)

According to an early work on the behavior of the plasma current decay in the JT-60U disruptive discharges caused by the radiative collapse with a massive neon-gas-puff, the increase of the internal inductance mainly determined the current decay time of plasma current during the initial phase of current quench. To investigate what determines the increase of the internal inductance, we focus attention on the relationship between the electron temperature (or the resistivity) profile and the time evolution of the current density profile, and carry out numerical calculations. As a result, we find the reason of the increase of the internal inductance: The current density profile at the start of the current quench is broader than an expected current density profile in the steady state, which is determined by the temperature (or resistivity) profile. The current density profile evolves into peaked one and the internal inductance is increasing.

Journal Articles

Study of current decay time during disruption in JT-60U tokamak

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Okamoto, Masaaki*; Ono, Noriyasu*; Isayama, Akihiko; Kurihara, Kenichi; Nakano, Tomohide; Oyama, Naoyuki; Kawano, Yasunori; Matsunaga, Go; et al.

Nuclear Fusion, 50(2), p.025015_1 - 025015_7, 2010/01

https://doi.org/10.1088/0029-5515/50/2/025015

Times Cited Count：17 Percentile：52.35(Physics, Fluids & Plasmas)

no abstracts in English

Oral presentation

Investigation of the influence of plasma inductance in the fast current decay of JT-60U disruptive discharges and verification of the current decay model

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Okamoto, Masaaki*; Ono, Noriyasu*; Isayama, Akihiko; Kurihara, Kenichi; Oyama, Naoyuki; Nakano, Tomohide; Kawano, Yasunori; Matsunaga, Go; et al.

no journal, ,

no abstracts in English

Oral presentation

Verification of the current decay model in the high $_{rm p}$ disruptive discharges in JT-60U

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Ono, Noriyasu*; Okamoto, Masaaki*; Isayama, Akihiko; Kurihara, Kenichi; Oyama, Naoyuki; Nakano, Tomohide; Kawano, Yasunori; Matsunaga, Go; et al.

no journal, ,

no abstracts in English

Oral presentation

Investigation of the current decay time in high disruptive discharges of JT-60U

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Ono, Noriyasu*; Okamoto, Masaaki*; Isayama, Akihiko; Kurihara, Kenichi; Oyama, Naoyuki; Nakano, Tomohide; Kawano, Yasunori; Sugihara, Masayoshi*

no journal, ,

no abstracts in English

Oral presentation

Comparison of the current decay time during minor collapse and major disruption in high plasma discharges of JT-60U

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Ono, Noriyasu*; Okamoto, Masaaki*; Isayama, Akihiko; Kurihara, Kenichi; Oyama, Naoyuki; Nakano, Tomohide; Kawano, Yasunori; Matsunaga, Go; et al.

no journal, ,

no abstracts in English

Oral presentation

Analysis of current quench of the JT-60U tokamak by using two dimensional MHD equilibrium calculation code (DINA)

Kawakami, Sho*; Shibata, Yoshihide*; Watanabe, Kiyomasa*; Ono, Noriyasu*; Kajita, Shin*; Okamoto, Masaaki*; Isayama, Akihiko; Sugihara, Masayoshi*; Kawano, Yasunori; Lukash, V. E.*; et al.

no journal, ,

no abstracts in English

Oral presentation

Study of plasma collapse in plasma current ramp-down phase of tokamak and helical devices

Shibata, Yoshihide*; Watanabe, Kiyomasa*; Ono, Noriyasu*; Okamoto, Masaaki*; Isayama, Akihiko; Kawano, Yasunori

no journal, ,

no abstracts in English

Oral presentation

Analysis of neon gas-puff disruption in the JT-60U tokamak by using DINA disruption simulation code

Kawakami, Sho*; Ono, Noriyasu*; Watanabe, Kiyomasa*; Shibata, Yoshihide; Okamoto, Masaaki*; Miyamoto, Seiji; Isayama, Akihiko; Sugihara, Masayoshi*; Kawano, Yasunori; Lukash, V. E.*; et al.

no journal, ,

no abstracts in English

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Effect of resistivity profile on current decay time of initial phase of current quench in neon-gas-puff inducing disruptions of JT-60U

Study of current decay time during disruption in JT-60U tokamak

Investigation of the influence of plasma inductance in the fast current decay of JT-60U disruptive discharges and verification of the current decay model

Verification of the current decay model in the high $_{rm p}$ disruptive discharges in JT-60U

Investigation of the current decay time in high disruptive discharges of JT-60U

Comparison of the current decay time during minor collapse and major disruption in high plasma discharges of JT-60U

Analysis of current quench of the JT-60U tokamak by using two dimensional MHD equilibrium calculation code (DINA)

Study of plasma collapse in plasma current ramp-down phase of tokamak and helical devices

Analysis of neon gas-puff disruption in the JT-60U tokamak by using DINA disruption simulation code