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Busbar arcs at large fusion magnets: Conductor to feeder tube arcing model experiments with the LONGARC device
Affiliation:1. Associazione EURATOM-ENEA, Department of Industrial Engineering, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133 Rome, Italy;2. Grupo de Tratamiento de Imágenes, E.T.S.I de Telecomunicación, Universidad Politécnica de Madrid, Spain;3. EURATOM/CCFE Association, Culham Science Centre, Abingdon, United Kingdom;4. Video Processing and Understanding Laboratory, Universidad Autónoma de Madrid, Spain;1. School of Engineering, Anhui Agricultural University, Hefei 230036, China;2. Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China;3. Magnet Division, TKM, ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul Lez Durance, France;1. Associazione EURATOM-ENEA sulla Fusione, Via Enrico Fermi 45, 00044 Frascati, Rome, Italy;2. Karlsruhe Institute of Technology KIT, Institute for Neutron Physics and Reactor Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;3. European Commission, DG Research & Innovation K5, CDMA 00/030, B-1049 Brussels, Belgium;1. Dipartimento Energia, Politecnico di Torino, I-10129 Torino, Italy;2. EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB, UK;3. Association EURATOM-TEKES, University of Helsinki, PO Box 64, 00560 Helsinki, Finland;4. Association EURATOM-MESCS, Reactor Physics Division, Jo?ef Stefan Institute, Ljubljana, Slovenia;5. Associazione EURATOM-ENEA sulla Fusione, Via Enrico Fermi 45, 00044 Frascati, Rome, Italy;1. Korea Atomic Research Institute, Daejeon, Republic of Korea;2. National Fusion Research Institute, Daejeon, Republic of Korea
Abstract:Electric arcs moving along the power cables (the so-called busbars) of the toroidal field (TF) coils of ITER may reach and penetrate the cryostat wall. Model experiments with the new LONGARC device continue the VACARC (VACuum ARC) experiments that were initiated to investigate the propagation and destruction mechanisms of busbar arcs in small scale 1]. The experiments are intended to support the development and validation of a numerical model. LONGARC overcomes the space limitations inside VACARC and allows also for advanced 1:3 (vs. ITER full scale) model setups. The LONGARC device and first results are presented below.
Keywords:Magnet safety  Electric arc  Busbar arc
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