Journal article
Plasma heating and generation of energetic D ions with the 3-ion ICRF + NBI scenario in mixed H-D plasmas at JET-ILW
Association EURATOM-Belgian State1
Technical University of Lisbon2
Department of Physics, Technical University of Denmark3
Plasma Physics and Fusion Energy, Department of Physics, Technical University of Denmark4
Josef Stefan Institute5
Aalto University6
Swiss Federal Institute of Technology Lausanne7
University of Milan - Bicocca8
Barcelona Supercomputing Center9
United Kingdom Atomic Energy Authority10
National Institute for Laser, Plasma and Radiation Physics11
NASU - Kharkov Institute of Physics and Technology12
Commissariat à l’énergie atomique et aux énergies alternatives13
Uppsala University14
National Research Council of Italy15
...and 5 moreDedicated experiments were conducted in mixed H-D plasmas in JET to demonstrate the efficiency of the 3-ion ICRF scenario for plasma heating, relying on injected fast NBI ions as the resonant ion component. Strong core localization of the RF power deposition in the close vicinity of the ion-ion hybrid layer was achieved, resulting in an efficient plasma heating, generation of energetic D ions, strong enhancement of the neutron rate and observation of Alfvenic modes.
A consistent physical picture that emerged from a range of fast-ion measurements at JET, including neutron and gamma-ray measurements, a high-energy neutral particle analyzer and MHD mode localization analysis, is presented. The possibility to moderate the fast-ion energies with the ratio PICRF/PNBI and the choice of the NBI injectors is demonstrated.
An outlook of possible applications of the 3-ion scenarios, including a recent example of its use in mixed D-3 plasmas in JET and promising scenarios for D-T plasmas, are presented.
Language: | English |
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Year: | 2020 |
Pages: | 112013 |
ISSN: | 17414326 , 00295515 and 10185577 |
Types: | Journal article |
DOI: | 10.1088/1741-4326/ab9256 |
ORCIDs: | 0000-0001-6316-5441 , 0000-0003-0170-5275 , 0000-0001-7456-4739 , 0000-0002-0012-4260 , 0000-0002-1030-138X , 0000-0002-0892-3358 , 0000-0003-0900-5564 , 0000-0002-3230-969X , 0000-0003-4644-2827 , 0000-0003-2078-6584 , Salewski, Mirko , 0000-0001-7006-4876 and 0000-0002-9608-280X |