Performance of the insulation mock-ups for the ITER PF6 coil

•Two beam-shaped mock-ups have been tested in simulated Tokamak operating conditions to qualify the insulation design and manufacture process for the ITER PF6 coil.•All the results of the electrical and mechanical tests, including DC and AC high-voltage withstanding at both room and cryogenic temper...

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Bibliographic Details
Published in:Fusion engineering and design 2018-12, Vol.137, p.362-372
Main Authors: Wu, Huan, Song, Yuntao, Lu, Kun, Wei, Jing, Shen, Guang, Wu, Weiyue, Xie, Yanyu, Zhang, Zhirong, Yang, Zhonghui, Shang, Mingming, Readman, Peter, Sborchia, Carlo, Valente, Pierluigi, Smith, Kevin, Ilyin, Yuri, Simon, Fabrice, Hua, Qing, Lim, Byung Su
Format: Article
Language:English
Subjects:
Coils (windings)
Conductors
Cryogenic temperature
Electrical and mechanical
Electrical equipment
Fatigue tests
High voltages
Insulation
ITER PF6 coil
Manufacturing
Mechanical tests
Mock-ups
Superconductivity
Tests
Thermal cycling
Tokamak devices
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Summary:•Two beam-shaped mock-ups have been tested in simulated Tokamak operating conditions to qualify the insulation design and manufacture process for the ITER PF6 coil.•All the results of the electrical and mechanical tests, including DC and AC high-voltage withstanding at both room and cryogenic temperature, AC partial discharge, Paschen tests, cryogenic compressive fatigue, push-out, and thermal cycling, met the ITER requirements.•Performance of the mock-ups confirmed the insulation design and manufacturing process for the ITER PF6 coil. The ITER PF6 coil is manufactured by winding, insulating the superconducting conductors, and further connecting them electrically and hydraulically. To qualify the insulation design and manufacturing process to be applied to the ITER PF6 coil, two beam-shaped mock-ups taking the form of a 3 × 3 array of conductors combined with the same insulation as in the production coil have been tested in simulated Tokamak operating conditions. All the results of the electrical and mechanical tests, including DC and AC high-voltage withstanding at both room and cryogenic temperature, AC partial discharge, Paschen tests, cryogenic compressive fatigue, push-out, and thermal cycling, met the ITER requirements. Performance of the mock-ups confirmed that the insulation design and manufacturing process are suitable for the ITER PF6 coil, based on that the qualification of the insulation manufacturing process for the double pancake can be started.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2018.10.019