Conductor Design of CS and EF Coils for JT-60SA

Kizu, K.; Tsuchiya, Kazuyoshi; Yoshida, Kiyoshi; Edaya, M.; Ichige, T.; Tamai, Hiroshi; Matsukawa, M.; Corte, A. della; Zenobio, A. Di; Muzzi, L.; Turtù, S.; Duchateau, J.L.; Zani, L.

doi:10.1109/tasc.2008.920536

Cited by 25 publications

(11 citation statements)

References 5 publications

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“…However there are the inductive voltage and the voltage induced by the AC losses of the superconductor, thus these voltages have to be reduced to less than the resistive voltage level for the quench detection. The maximum voltage of the AC losses is roughly estimated as 600 mV from the operating current and the AC losses [5,10]. The voltage of the AC losses has to be cancelled by the estimation with the commissioning data.…”

Section: Circuit Of Quench Detection Systemmentioning

confidence: 99%

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Quench detection of fast plasma events for the JT-60SA central solenoid

Murakami

Kizu

Tsuchiya

et al. 2012

Fusion Engineering and Design

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Section: Circuit Of Quench Detection Systemmentioning

confidence: 99%

“…In the JT-60SA, magnets system [3][4][5][6][7] consists of 18 toroidal field (TF) coils, 4 modules of central solenoid (CS) and 6 plasma equilibrium field (EF) coils as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Quench detection of fast plasma events for the JT-60SA central solenoid

Murakami

Kizu

Tsuchiya

et al. 2012

Fusion Engineering and Design

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“…For EF coil conductor, heat load control is important since the thickness of its jacket is thinner in comparison with that of CS [10]. Test pieces were fabricated with the welding where heat load to the cable was controlled to keep the temperature on the surface of cable around 350 during shorter than 5 seconds, or lower than 350 .…”

Section: A Inletmentioning

confidence: 99%

Manufacture of the Winding Pack and Development of Key Parts for the JT-60SA Poloidal Field Coils

Tsuchiya

Kizu

Murakami

et al. 2012

IEEE Trans. Appl. Supercond.

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Manufacture of poloidal field (PF) coil system in JT-60SA is progressing. Recently, fabrication of the winding machines for equilibrium field (EF) coils and central solenoid (CS) were completed and the winding with the superconducting conductor was started for an EF coil (EF4). A few double pancake (DP) coils for EF4 were fabricated, and it was realized that the error of circularity for DP coils became less than the designed value. Design of the conductor end structure was also progressed. This part had the role of restraining the conductor end to prevent its separation from the winding pack. It was confirmed by the structural analysis that the conductor end structure for CS, which receives the large electromagnetic (EM) force, had sufficient mechanical strength. It was also checked by the cold test that this structure satisfied the designed performance for the electrical isolation in addition to the mechanical performance. Regarding the design of the inlet for CS, mechanical reinforcement was considered for its structure. Final design of CS inlet was determined by structural analysis to confirm the sufficient mechanical strength against the vertical compression induced by EM forces.Index Terms-Conductor end structure, inlet, JT-60SA, poloidal field (PF) coil, winding pack.

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“…Table 1 shows the major parameters of EF conductors [3]. Two types of conductors were designed referred as EF-H and EF-L depending on maximum magnetic field (B max ).…”

Section: Introductionmentioning

confidence: 99%