The JET hybrid scenario in Deuterium, Tritium and Deuterium-Tritium

0584076 - ÚFP 2024 RIV US eng J - Journal Article
Hobirk, J. - Ficker, Ondřej - Jaulmes, Fabien … Total 107 authors
The JET hybrid scenario in Deuterium, Tritium and Deuterium-Tritium.
Nuclear Fusion. Roč. 63, č. 11 (2023), č. článku 112001. ISSN 0029-5515. E-ISSN 1741-4326
EU Projects: European Commission(BE) 101052200
Institutional support: RVO:61389021
Keywords : JET * deuterium * tritium
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.3, year: 2022
Method of publishing: Open access
https://iopscience.iop.org/article/10.1088/1741-4326/acde8d

The JET hybrid scenario has been developed from low plasma current carbon wall discharges to the record-breaking Deuterium-Tritium plasmas obtained in 2021 with the ITER-like Be/W wall. The development started in pure Deuterium with refinement of the plasma current, and toroidal magnetic field choices and succeeded in solving the heat load challenges arising from 37 MW of injected power in the ITER like wall environment, keeping the radiation in the edge and core controlled, avoiding MHD instabilities and reaching high neutron rates. The Deuterium hybrid plasmas have been re-run in Tritium and methods have been found to keep the radiation controlled but not at high fusion performance probably due to time constraints. For the first time this scenario has been run in Deuterium-Tritium (50:50). These plasmas were re-optimised to have a radiation-stable H-mode entry phase, good impurity control through edge Ti gradient screening and optimised performance with fusion power exceeding 10 MW for longer than three alpha particle slow down times, 8.3 MW averaged over 5 s and fusion energy of 45.8 MJ.
Permanent Link: https://hdl.handle.net/11104/0352081