Overview of power exhaust experiments in the COMPASS divertor with liquid metals
| Autor: | M. Iafrati, J. Adamek, Vladimir Weinzettl, S. Atikukke, David Tskhakaya, A. Prishvitcyn, J. Cecrdle, Miglena Dimitrova, J. Horacek, G. Van Oost, M. Jerab, Martin Hron, Petr Vondracek, G. Mazzitelli, M. Tomes, Pavel Veis, Martin Imrisek, Jordan Cavalier, D. Naydenkova, A.V. Vertkov, Jozef Varju, A. Marin Roldan, P. Barton, Estelle Gauthier, R. Dejarnac |
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| Přispěvatelé: | Dejarnac, R., Horacek, J., Hron, M., Jerab, M., Adamek, J., Atikukke, S., Barton, P., Cavalier, J., Cecrdle, J., Dimitrova, M., Gauthier, E., Iafrati, M., Imrisek, M., Marin Roldan, A., Mazzitelli, G., Naydenkova, D., Prishvitcyn, A., Tomes, M., Tskhakaya, D., Van Oost, G., Varju, J., Veis, P., Vertkov, A., Vondracek, P., Weinzettl, V. |
| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Liquid metal Technology and Engineering Tokamak Materials science Capillary action Materials Science (miscellaneous) Nuclear engineering Alloy engineering.material COMPASS 01 natural sciences 010305 fluids & plasmas law.invention Divertor law 0103 physical sciences Perpendicular 010302 applied physics CAPILLARY-PORE SYSTEMS Plasma lcsh:TK9001-9401 TARGET Nuclear Energy and Engineering Heat flux engineering lcsh:Nuclear engineering. Atomic power CPS ELM |
| Zdroj: | Nuclear Materials and Energy, Vol 25, Iss, Pp 100801-(2020) Nuclear Materials and Energy NUCLEAR MATERIALS AND ENERGY |
| ISSN: | 2352-1791 |
| Popis: | 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/m(2) of deposited perpendicular, inter-ELM steady-state heat flux and with ELMs of relative energy similar to 3% and a local peak energy fluence at the module similar to 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. |
| Databáze: | OpenAIRE |
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