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Report No.

Fabrication of a test coil to evaluate performance of ITER conductor

Isono, Takaaki; Kawano, Katsumi; Ozeki, Hidemasa; Sato, Minoru; Saito, Toru; Nishino, Katsumi

Japan Atomic Energy Agency (JAEA) has fabricated a test coil to evaluate superconducting performance of the conductor used for Central Solenoid (CS) of the International Thermonuclear Experimental Reactor (ITER) system. The coil is a 9-turn single layer solenoid coil with a 1.5-m diameter and will be inserted and tested in the Central Solenoid Model Coil (CSMC) test facility in JAEA. The conductor is cable-in-conduit type and has a square shape of 49 mm. The cable is composed of 576 Nb$$_{3}$$Sn strands and 288 copper strands. The conductor will be operated at 13-T magnetic field and 40 kA operating current. Fabrication sequence of the coil is; (1) winding of 1.5 m diameter, (2) fabrication of terminals, (3) heat treatment to generate superconductor, (4) turn insulation, (5) ground insulation, (6) assemble of structures and (7) installation of instruments. Before fabrication of the coil, trial coil was fabricated using a dummy conductor to demonstrate fabrication procedure. Fabrication results of trial and the test coil will be presented.



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