Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment
The nuclear fusion project JT-60SA is presently under construction in Naka (Japan) as a joint collaboration between Europe and Japan, within the framework of the Broader Approach Agreement. According to such agreement, the various JT-60SA systems are supplied by European and Japanese institutions. I...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-04-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/4/996 |
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| author | Alessandro Lampasi Filippo Burini Giuseppe Taddia Sandro Tenconi Makoto Matsukawa Katsuhiro Shimada Luca Novello Antti Jokinen Pietro Zito |
| author_facet | Alessandro Lampasi Filippo Burini Giuseppe Taddia Sandro Tenconi Makoto Matsukawa Katsuhiro Shimada Luca Novello Antti Jokinen Pietro Zito |
| author_sort | Alessandro Lampasi |
| collection | DOAJ |
| description | The nuclear fusion project JT-60SA is presently under construction in Naka (Japan) as a joint collaboration between Europe and Japan, within the framework of the Broader Approach Agreement. According to such agreement, the various JT-60SA systems are supplied by European and Japanese institutions. In particular, the Italian Agency ENEA was in charge for the procurement of the four Switching Network Units (SNUs) for the JT-60SA Central Solenoid (CS). The main SNU function is to interrupt a DC current up to 20 kA in a short time (less than 1 ms) in order to produce an overvoltage of up to 5 kV, crucial to generate and sustain the fusion plasma. The SNU design, manufacturing and factory test activities have been completed in 2016. After the delivery in Naka, the four SNUs have been installed and successfully commissioned in 2017. After an overview on the main technical characteristics of the SNUs and the key aspects of their design, this paper describes the activities performed on-site, highlighting the results obtained during the final acceptance tests and comparing them with the design simulation and the factory test results. |
| first_indexed | 2024-04-11T12:13:51Z |
| format | Article |
| id | doaj.art-57a02e0025e642cf94aa3c7cf79c4fad |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T12:13:51Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-57a02e0025e642cf94aa3c7cf79c4fad2022-12-22T04:24:27ZengMDPI AGEnergies1996-10732018-04-0111499610.3390/en11040996en11040996Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion ExperimentAlessandro Lampasi0Filippo Burini1Giuseppe Taddia2Sandro Tenconi3Makoto Matsukawa4Katsuhiro Shimada5Luca Novello6Antti Jokinen7Pietro Zito8Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Enrico Fermi, 45, 00044 Frascati, ItalyOCEM Power Electronics, Via della Solidarietà, 2/1/Località Crespellano, Valsamoggia, 40056 Bologna, ItalyOCEM Power Electronics, Via della Solidarietà, 2/1/Località Crespellano, Valsamoggia, 40056 Bologna, ItalyOCEM Power Electronics, Via della Solidarietà, 2/1/Località Crespellano, Valsamoggia, 40056 Bologna, ItalyNational Institutes for Quantum and Radiological Science and Technology (QST), Mukoyama 801-1, Naka-shi 311-0193, Ibaraki-ken, JapanNational Institutes for Quantum and Radiological Science and Technology (QST), Mukoyama 801-1, Naka-shi 311-0193, Ibaraki-ken, JapanFusion for Energy (F4E), Boltzmannstrasse 2, 85748 Garching, GermanyFusion for Energy (F4E), Boltzmannstrasse 2, 85748 Garching, GermanyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Enrico Fermi, 45, 00044 Frascati, ItalyThe nuclear fusion project JT-60SA is presently under construction in Naka (Japan) as a joint collaboration between Europe and Japan, within the framework of the Broader Approach Agreement. According to such agreement, the various JT-60SA systems are supplied by European and Japanese institutions. In particular, the Italian Agency ENEA was in charge for the procurement of the four Switching Network Units (SNUs) for the JT-60SA Central Solenoid (CS). The main SNU function is to interrupt a DC current up to 20 kA in a short time (less than 1 ms) in order to produce an overvoltage of up to 5 kV, crucial to generate and sustain the fusion plasma. The SNU design, manufacturing and factory test activities have been completed in 2016. After the delivery in Naka, the four SNUs have been installed and successfully commissioned in 2017. After an overview on the main technical characteristics of the SNUs and the key aspects of their design, this paper describes the activities performed on-site, highlighting the results obtained during the final acceptance tests and comparing them with the design simulation and the factory test results.http://www.mdpi.com/1996-1073/11/4/996nuclear fusiontokamakplasma breakdownsuperconductorswitching network unitDC current interruptionhybrid electromechanical-electronic switchhigh current power supplyhigh current test |
| spellingShingle | Alessandro Lampasi Filippo Burini Giuseppe Taddia Sandro Tenconi Makoto Matsukawa Katsuhiro Shimada Luca Novello Antti Jokinen Pietro Zito Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment Energies nuclear fusion tokamak plasma breakdown superconductor switching network unit DC current interruption hybrid electromechanical-electronic switch high current power supply high current test |
| title | Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment |
| title_full | Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment |
| title_fullStr | Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment |
| title_full_unstemmed | Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment |
| title_short | Installation, Commissioning and Tests of Four Fast Switching Units of up to 20 kA for the JT-60SA Nuclear Fusion Experiment |
| title_sort | installation commissioning and tests of four fast switching units of up to 20 ka for the jt 60sa nuclear fusion experiment |
| topic | nuclear fusion tokamak plasma breakdown superconductor switching network unit DC current interruption hybrid electromechanical-electronic switch high current power supply high current test |
| url | http://www.mdpi.com/1996-1073/11/4/996 |
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