Y. Kawamata

Progress of the magnetic sensor development for JT-60SA

M. Takechi, G. Matsunaga, Shoma Sakurai, T. Sasajima et autres

jp (code pays fourni par la source)

Higher-precision Reconstruction and the Feedback Control of Divertor Plasma Shape in QUEST

K. Nakamura, O. Mitarai, Hiroaki Tsutsui, Kazuo Kurihara et autres

Non-inductive Current Drive and Particle Recycling Study in Steady State Divertor Configuration in QUEST

H. Zushi, K. Hanada, K. Nakamura, A. Fujisawa et autres

The basic methods for understanding of plasma equilibrium toward advanced control

Kenichi Kurihara, Y. Kawamata, Michiharu Sueoka, Hosoyama Hiroki et autres

jp (code pays fourni par la source)

Plasma real-time control system for advanced tokamak operation scenarios in JT-60

Kenichi Kurihara, Y. Kawamata, K. Akiba, Y. Miura et autres

Tokamak magnetic fusion research has progressed to an advanced project, i.e., ITER (International Thermonuclear Experimental Reactor). Therefore, existing tokamaks must explore operational scenarios necessary for a high-performance plasma while simultaneously suppressing any disruptive instabilities. To implement this investigation, various advanced real-time controls …

jp (code pays fourni par la source)

Advanced Real-Time Feedback Control in JT-60U High Performance Discharges for Application to Fusion Reactor Plasmas

T. Fukuda, T Oikawa, S Takeji, A. Isayama et autres

The significance of real-time feedback control is emphasized in this paper as an indispensable method to improve and sustain the improved plasma characteristics in JT-60U high fusion performance discharges as well as to operate the fusion reactor under the optimal divertor conditions …

jp (code pays fourni par la source)

Development of the Real-Time Plasma Shape Visualization System in JT60-U

Kenichi Kurihara, Y. Kawamata, Kenichi Akiba, Hironori Adachi et autres

トカマクプラズマの楕円度や三角形度は,エネルギー閉じ込め性能の決定因子の一つであるなど,その断面位置形状の重要性が近年認識されてきた。一方その全体像の実時間同定は,計算時間の制約から不可能とされていた。障害の原因である特殊関数や逆行列等の計算を実時間処理から除くために,特殊なテーブルを大容量メモリ上に展開しておくというアルゴリズム上の工夫に加え,最新の電子機器を用いて装置を構成した。この結果大幅な時間短縮を実現し断面形状を毎秒15コマ(60ms/画面)の速度で実時間動画化し,着火直後のリミタ配位からダイバータ配位に移行する様子などの映像情報を実時間で提供した。本論文では,JT-60で実稼働中のシステムの開発結果を報告し,その動画映像(磁場揺動の「音声化」を含む)も示す。またさらなる高速化を必要とする実時間制御への適用構想にも言及する。

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Feedback control of radiation region in radiative divertor plasma on JT-60U tokamak

H. Tamai, Shigeru KONOSHIMA, N. Hosogane, N. Asakura et autres

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Erratum: Achievement of High Fusion Performance in JT-60U Reversed Shear Discharges [Phys. Rev. Lett.79, 3917 (1997)]

S. Ishida, Takashi Fujita, H. Akasaka, N. Akino et autres

JT-60U Plasma Control System

Toyoaki Kimura, Kenichi Kurihara, Y. Kawamata, Kenichi Akiba et autres

A review on the plasma position and current control system for the JT-60 upgrade is presented. In the control system, advanced digital technologies such as the versa module Europe bus, the computer automated measurement and control technology, and Ethernet are applied to …

Feedback control of neutron emission rate in JT-60U

Y. Neyatani, T. Fukuda, Takeo Nishitani, Ryuji Yoshino et autres

jp (code pays fourni par la source)

DSP application to fast parallel processing in JT-60U plasma control

T. Kimura, Y. Kawamata, K. Akiba

jp (code pays fourni par la source)