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(ITER/4) Progress of the ITER Central Solenoid Model Coil Program

H. Tsuji¹⁾, K. Okuno²⁾, R. Thome³⁾, E. Salpietro⁴⁾, S. Egorov⁵⁾, N. Martovetsky⁶⁾, M. Ricci⁷⁾, R. Zanino⁸⁾, G. Zahn⁹⁾, A. Martinez¹⁰⁾, G. Vecsey¹¹⁾, K. Arai¹²⁾, T. Ishigooka¹³⁾, T. Kato¹⁾, T. Ando¹⁾, Y. Takahashi¹⁾, H. Nakajima¹⁾, T. Hiyama¹⁾, M. Sugimoto¹⁾, N. Hosogane¹⁾, M. Matsukawa¹⁾, Y. Miura¹⁾, T. Terakado¹⁾, J. Okano¹⁾, K. Shimada¹⁾, M. Yamashita¹⁾, T. Isono¹⁾, N. Koizumi¹⁾, K. Kawano¹⁾, M. Oshikiri¹⁾, Y. Nunoya¹⁾, K. Matsui¹⁾, Y. Tsuchiya¹⁾, G. Nishijima¹⁾, H. Kubo¹⁾, T. Shimba¹⁾, E. Hara¹⁾, K. Imahashi¹⁾, Y. Uno¹⁾, T. Ohuchi¹⁾, K. Ohtsu¹⁾, J. Okayama¹⁾, T. Kawasaki¹⁾, M. Kawabe¹⁾, S. Seki¹⁾, K. Takano¹⁾, Y. Takaya¹⁾, F. Tajiri¹⁾, F. Tsutsumi¹⁾, T. Nakamura¹⁾, H. Hanawa¹⁾, H. Wakabayashi¹⁾, T. Shimizu¹⁾, K. Kuramochi¹⁾, T. Omine¹⁾, T. Tamiya¹⁾, J. Harada¹⁾, K. Nishii¹⁾, M. Huguet²⁾, N. Mitchell²⁾, D. Bessette²⁾, J. Minervini³⁾, R. Vieira³⁾, P. Michael³⁾, M. Takayasu³⁾, G. Bevilacqua⁴⁾, R. Maix⁴⁾, R. Manahan⁶⁾, R. Jayakumar⁶⁾, L. Savoldi⁸⁾, W. Herz⁹⁾, A. Ninomiya^13)
 
1) Japan Atomic Energy Research Institute (JAERI), Naka, Japan
²⁾ ITER Joint Central Team, Naka, Japan
³⁾ Massachusetts Institute of Technology, Cambridge, MA, USA
⁴⁾ European Fusion Development Agreement, Garching, Germany
⁵⁾ D. V. Efremov Scientific Research Institute, St. Petersburg, Russia
⁶⁾ Lawrence Livermore National Laboratory, Livermore, USA
⁷⁾ ENEA C. R. Frascati, Frascati, Italy
⁸⁾ Politecnico di Torino, Torino, Italy
⁹⁾ Forschungszentrum Karlsruhe , Eggenstein-Leopoldshafen, Germany
¹⁰⁾ CEA Cadarache, St-Paul-Lez-Durance, France
¹¹⁾ Ecole Polytechnique Federale de Lausanne, Villigen, Suisse
¹²⁾ Electrotechnical Laboratory, Tsukuba, Japan
¹³⁾ Seikei University, Musashino, Japan

Abstract.  The world s largest pulsed superconducting coil was successfully tested by charging up to 13 T and 46 kA with a stored energy of 640 MJ. The ITER Central Solenoid (CS) Model Coil and CS Insert Coil were developed and fabricated through an international collaboration and their cool down and charging tests were successfully carried out by international test and operation teams. In pulsed charging tests, where the original goal was 0.4T/s up to 13T, the CS Model Coil and the CS Insert Coil achieved ramp rates of 0.6T/s and 1.2T/s up to 13T, respectively. In addition, the CS Insert Coil was charged and discharged 10,003 times in the 13-T background field of the CS Model Coil and no degradation of the operational temperature margin directly coming from this cyclic operation was observed. These test results fulfilled all the goals of CS Model Coil development by confirming the validity of the engineering design and demonstrating that we are now ready to construct the ITER coils with confidence.

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