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15 results on '"Tronza, Vladimir"'

9. ITER Central Solenoid Insert Test Results

Author

Martovetsky, Nicolai, primary, Isono, Takaaki, additional, Bessette, Denis, additional, Takahashi, Yoshikazu, additional, Nunoya, Yoshihiko, additional, Nabara, Yoshihiro, additional, Ozeki, Hidemasa, additional, Kawano, Katsumi, additional, Saito, Toru, additional, Suwa, Tomone, additional, Okuno, Kiyoshi, additional, Devred, Arnaud, additional, Gauthier, Florent, additional, Mitchell, Neil, additional, Zanino, Roberto, additional, Savoldi, Laura, additional, Bonifetto, Roberto, additional, Breschi, Marco, additional, Ciazynski, Daniel, additional, Reiersen, Wayne, additional, Smirnov, Alexandre, additional, Khodak, Andrei, additional, Bruzzone, Pierluigi, additional, Rodin, Igor, additional, Tronza, Vladimir, additional, Torre, Alexandre, additional, Nicollet, Sylvie, additional, Zani, Louis, additional, Louzguiti, Alexandre, additional, and Duchateau, Jean-Luc, additional

Published
2016
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11. VNIIKP RF TF Cable Untwisting and Elongation Under Tensile Force

Author

Kaverin, Denis S., primary, Zubko, Vasily V., additional, Shutov, Kirill A., additional, Marinin, Konstantin S., additional, Kochetov, Maxim V., additional, Paramonov, Alexander V., additional, Vysotsky, Vitaly S., additional, Tronza, Vladimir I., additional, and Takahashi, Yoshikazu, additional

Published
2014
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14. T-cs degradation of ITER TF samples due to fast current discharges

Author

Sedlak, Kamil, Bruzzone, Pierluigi, Stepanov, Boris, Mitchell, Neil, Tronza, Vladimir, and Vostner, Alexander

Subjects
quench, conductor testing, tf coils, degradation
Abstract

Direct current tests performed in the past on the conductor samples of the toroidal field (TF) ITER coils revealed degradation of current sharing temperature, T-cs. The degradation progresses with repetitive electromagnetic loading, and also with thermal cycles between 4.5 K and room temperature. This feature was observed on short samples in SULTAN test facility (EPFL-SPC, Switzerland) as well as in TF Insert Coil tests in CSMC test facility (Naka, Japan). We present three independent observations suggesting that initiation of sample quench followed by a fast current discharge, which normally complements every I-c and T-cs test in both SULTAN and CSMC, enhances the T-cs degradation rate. The exact mechanism of this contribution to the degradation remains unidentified.

15. ITER Central Solenoid Insert Test Results

Author

Yoshikazu Takahashi, Alexandre Louzguiti, Nicolai Martovetsky, Katsumi Kawano, Marco Breschi, Roberto Zanino, Jean Luc Duchateau, Tomone Suwa, Takaaki Isono, Louis Zani, V. Tronza, Daniel Ciazynski, Yoshihiro Nabara, Roberto Bonifetto, Alexandre Smirnov, Sylvie Nicollet, Neil Mitchell, Arnaud Devred, Toru Saito, Pierluigi Bruzzone, Laura Savoldi, Yoshihiko Nunoya, Andrei Khodak, Kiyoshi Okuno, Hidemasa Ozeki, Alexandre Torre, Florent Gauthier, Denis Bessette, W. Reiersen, Igor Rodin, Martovetsky, Nicolai, Isono, Takaaki, Bessette, Deni, Takahashi, Yoshikazu, Nunoya, Yoshihiko, Nabara, Yoshihiro, Ozeki, Hidemasa, Kawano, Katsumi, Saito, Toru, Suwa, Tomone, Okuno, Kiyoshi, Devred, Arnaud, Gauthier, Florent, Mitchell, Neil, Zanino, Roberto, Savoldi, Laura, Bonifetto, Roberto, Breschi, Marco, Ciazynski, Daniel, Reiersen, Wayne, Smirnov, Alexandre, Khodak, Andrei, Bruzzone, Pierluigi, Rodin, Igor, Tronza, Vladimir, Torre, Alexandre, Nicollet, Sylvie, Zani, Loui, Louzguiti, Alexandre, and Duchateau, Jean-Luc

Subjects
Materials science, Aperture, Nuclear engineering, Solenoid, Superconducting magnet, AC loss measurement, 01 natural sciences, 010305 fluids & plasmas, Degradation, loss measurement, performance, superconducting magnets, voltage measurement, Current Sharing Temperature, Nuclear magnetic resonance, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Insert (composites), Fusion Magnet, Plasma, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Magnetic field, Conductor, Magnet, Central Solenoid, ITER central solenoid magnet plasma cycle conductor insert
Abstract

The ITER central solenoid (CS) is a highly stressed magnet that must provide 30 000 plasma cycles under the ITER prescribed maximum operating conditions. To verify the performance of the ITER CS conductor in conditions close to those for the ITER CS, the CS insert was built under a USA-Japan collaboration. The insert was tested in the aperture of the CSMC facility in Naka, Japan, during the first half of 2015. A magnetic field of up to 13 T and a transport current of up to 60 kA provided a wide range of parameters to characterize the conductor. The CS insert has been tested under direct and reverse charges, which allowed a wide range of strain variation and provided valuable data for characterization of the CS conductor performance at different strain levels. The CS insert test program had several important goals as follows. 1) Measure the temperature margin of the CS conductor at the relevant ITER CS operational conditions. 2) Study the effects of electromagnetic forces and strain in the cable on the CS conductor performance. 3) Study the effects of the warmup and cooldown cycles on the CS conductor performance. 4) Compare the conductor performance in the CS insert with the performance of the CS conductor in a straight hairpin configuration (hoop strain free) tested in the SULTAN facility. 5) Measure the maximum temperature rise of the cable as a result of quench. The main results of the CS insert testing are presented and discussed.

Published
2016

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