Nuclear Materials and Energy (Dec 2020)
Overview of power exhaust experiments in the COMPASS divertor with liquid metals
- R. Dejarnac,
- J. Horacek,
- M. Hron,
- M. Jerab,
- J. Adamek,
- S. Atikukke,
- P. Barton,
- J. Cavalier,
- J. Cecrdle,
- M. Dimitrova,
- E. Gauthier,
- M. Iafrati,
- M. Imrisek,
- A. Marin Roldan,
- G. Mazzitelli,
- D. Naydenkova,
- A. Prishvitcyn,
- M. Tomes,
- D. Tskhakaya,
- G. Van Oost,
- J. Varju,
- P. Veis,
- A. Vertkov,
- P. Vondracek,
- V. Weinzettl
Affiliations
- R. Dejarnac
- Institute of Plasma Physics of the CAS, Prague, Czech Republic; Corresponding author.
- J. Horacek
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- M. Hron
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- M. Jerab
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- J. Adamek
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- S. Atikukke
- Comenius University, Bratislava, Slovakia
- P. Barton
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- J. Cavalier
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- J. Cecrdle
- FNSPE, Czech Technical University, Prague, Czech Republic
- M. Dimitrova
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- E. Gauthier
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
- M. Iafrati
- ENEA, Fusion Technology Division, Frascati, Italy
- M. Imrisek
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- A. Marin Roldan
- Comenius University, Bratislava, Slovakia
- G. Mazzitelli
- ENEA, Fusion Technology Division, Frascati, Italy
- D. Naydenkova
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- A. Prishvitcyn
- National Research Nuclear University MEPhI, Moscow, Russia
- M. Tomes
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- D. Tskhakaya
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- G. Van Oost
- National Research Nuclear University MEPhI, Moscow, Russia; Ghent University, Ghent, Belgium; National Research University Moscow Power Engineering Institute, Moscow, Russia
- J. Varju
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- P. Veis
- Comenius University, Bratislava, Slovakia
- A. Vertkov
- JSC Red Star, Moscow, Russia
- P. Vondracek
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- V. Weinzettl
- Institute of Plasma Physics of the CAS, Prague, Czech Republic
- Journal volume & issue
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Vol. 25
p. 100801
Abstract
Power handling experiments with a special liquid metal divertor module based on the capillary porous system technology were performed in the tokamak COMPASS. The performance of two metals (Li and LiSn alloy) were tested for the first time in a divertor under ELMy H-mode conditions. No damage of the capillary mesh and a good exhaust capability were observed for both metals in two separate experiments with up to 12 MW/m2 of deposited perpendicular, inter-ELM steady-state heat flux and with ELMs of relative energy ~3% and a local peak energy fluence at the module ~15 kJ.m−2. No droplets were directly ejected from the mesh top surface and for the LiSn experiment, no contamination of the core and SOL plasmas by Sn was observed. The elemental depth profile analysis of 14 stainless-steel samples located around the vacuum vessel for each experiment provides information about the migration of evaporated/redeposited liquid elements.
