Thermo hydraulic and quench propagation characteristics of SST-1 TF coil |
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| Affiliation: | 1. Institute for Plasma Research, Gandhinagar, India;2. CEA Cadarache, 13108 St Paul lez Durance Cedex, France;1. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, PR China;2. School of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester M13 9PL, UK;1. WMG, University of Warwick, Coventry CV4 7AL, UK;2. CERN, CH-1211 Geneva 23, Switzerland;3. Department of Physical Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA, UK;1. Institute of Plasma Physics, P.O. Box 1126, Hefei 230031, China;2. PELIN, LLC, 27A, Gzhatskaya, Saint Petersburg 195220, Russia;1. Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland;2. CCFE/EURATOM Fusion Association, Culham Science Centre, OX14 3DB Abingdon, United Kingdom;3. Alfvén Laboratory, Royal Institute of Technology, Association EURATOM-VR, 100 44 Stockholm, Sweden;4. Center for Energy Research, University of California at San Diego, 9500 Gilman Dr, La Jolla, CA 92093-0417, USA;5. Association EURATOM-TEKES, VTT, PO Box 1000, 02044 VTT Espoo, Finland;6. Instituto Superior Técnico (IST), Universidade de Lisboa, Instituto de Plasmas e Fusão Nuclear/Laboratório de Aceleradores e Tecnologias de Radiação, Estrada Nacional N° 10, km 139,7, 2695-066 Bobadela, Portugal;1. Dipartimento Energia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;2. ITER International Organization, St. Paul-lez-Durance, France |
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| Abstract: | SST-1 toroidal field (TF) magnet system is comprising of sixteen superconducting modified ‘D’ shaped TF coils. During single coil test campaigns spanning from June 10, 2010 till January 24, 2011; the electromagnetic, thermal hydraulic and mechanical performances of each TF magnet have been qualified at its respective nominal operating current of 10,000 A in either two-phase or supercritical helium cooling conditions. During the current charging experiments, few quenches have initiated either as a consequence of irrecoverable normal zones or being induced in some of the TF magnets. Quench evolution in the TF coils have been analyzed in detail in order to understand the thermal hydraulic and quench propagation characteristics of the SST-1 TF magnets. The same were also simulated using 1D code Gandalf. This paper elaborates the details of the analyses and the quench simulation results. A predictive quench propagation analysis of 16 assembled TF magnets system has also been reported in this paper. |
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| Keywords: | SST-1 TF coil Quench Normal zone Gandalf Two phase and supercritical helium |
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