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17–22 Oct 2016
Kyoto International Conference Center
Japan timezone

Comparison of Runaway Electron Generation Parameters in Small, Medium-sized and Large Tokamaks – A Survey of Experiments in COMPASS, TCV, ASDEX-Upgrade and JET

20 Oct 2016, 14:00
4h 45m
Kyoto International Conference Center

Kyoto International Conference Center

Takaragaike, Sakyo-ku, Kyoto 606-0001 Japan
Poster EXS - Magnetic Confinement Experiments: Stability Poster 6

Speaker

Dr Vladislav V Plyusnin (Instituto de Plasmas e Fusão Nuclear, IST, Universidade de Lisboa)

Description

Report presents a survey of experiments on runaway electrons (RE) carried out recently in frames of EUROFusion Consortium in different tokamaks (Compass, ASDEX-Upgrade (AUG), TCV and JET). The increase of geometrical scale and physical parameters of plasma experiment on disruption generated RE has been studied. New data on disruption generated RE in Compass with carbon limiter and AUG with tungsten wall was collected and added to the database on RE in JET. Parameters of measured RE in different devices revealed similar trends on toroidal magnetic field fitting well into the JET database. Current values of RE beams demonstrated increasing trends with increase of geometrical size and parameters of plasma experiment from small and medium-sized tokamaks towards to JET. As well dissipation of RE beams in flattop discharges have been studied. Injections of impure gases into RE flattop discharges allowed distinguishing of two types of dissipative effect of such injections on RE populations in Compass and TCV. A description of diagnostics capable to characterize RE electrons and main measured parameters and values are given.
Country or International Organization Portugal
Paper Number EX/P6-33

Primary author

Dr Vladislav V Plyusnin (Instituto de Plasmas e Fusão Nuclear, IST, Universidade de Lisboa)

Co-authors

Mr Alexander Shevelev (RuIoffe) Dr Barry Alper (UkCCFE) Dr Basil Duval (Swiss Plasma Center, ChCRPP) Dr Cedric Reux (CEA, IRFM, F-13108 Saint Paul-lez-Durance, France.) Mr Evgeni Khilkevitch (RuIoffe) Gabriella Pautasso (IPP, Garching, Germany) Dr Gergely Papp (DeMPIPGarc) Dr Jan Mlynar (Institute of Plasma Physics, Czech Academy of Sciences) Dr Joan Decker (Swiss Plasma Center, ChCRPP) Dr Massimo Nocente (Dipartimento di Fisica, Università di Milano-Bicocca) Mr Miloc Vlainic (BeGhent) Dr Peter Lomas (UkCCFE) Prof. Piero MARTIN (Consorzio RFX) Dr Ralph Dux (Max-Planck-Institut für Plasmaphysik, Garching, Germany) Dr Sergei Gerasimov (UkCCFE) Dr Stefan Jachmich (BeLPP) Dr Stefano Coda (Swiss Plasma Center, ChCRPP) Dr Valeria Riccardo (UkCCFE) Dr Vasili Kiptily (UkCCFE) Dr Vladimir Weinzettl (CzIPP) Dr Yves Martin Martin (Swiss Plasma Center, ChCRPP)

Presentation materials