| Title: |
Physics and applications of three-ion ICRF scenarios for fusion research |
| Authors: |
Kazakov, Ye. O.; Ongena, J.; Wright, J. C.; Wukitch, S. J.; Bobkov, V.; Garcia, J.; Kiptily, V. G.; Mantsinen, M. J.; Nocente, M.; Schneider, M.; Weisen, H.; Baranov, Y.; Baruzzo, M.; Bilato, R.; Chomiczewska, A.; Coelho, R.; Craciunescu, T.; Crombé, Kristel; Dreval, M.; Dumont, R.; Dumortier, P.; Durodié, F.; Eriksson, J.; Fitzgerald, M.; Galdon-Quiroga, J.; Gallart, D.; Garcia-Muñoz, M.; Giacomelli, L.; Giroud, C.; Gonzalez-Martin, J.; Hakola, A.; Jacquet, P.; Johnson, T.; Kappatou, A.; Keeling, D.; King, D.; Kirov, K. K.; Lamalle, P.; Lennholm, M.; Lerche, E.; Maslov, M.; Mazzi, S.; Menmuir, S.; Monakhov, I.; Nabais, F.; Nave, M. F. F.; Ochoukov, R.; Polevoi, A. R.; Pinches, S. D.; Plank, U.; Rigamonti, D.; Salewski, M.; Schneider, P. A.; Sharapov, S. E.; Štancar, Ž.; Thorman, A.; Valcarcel, D.; Van Eester, D.; Van Schoor, M.; Varje, J.; Weiland, M.; Wendler, N.; JET Contributors,, missing; ASDEX Upgrade Team,, missing; EUROfusion MST1 Team,, missing; Alcator C-Mod Team, missing |
| Source: |
PHYSICS OF PLASMAS ; ISSN: 1070-664X ; ISSN: 1089-7674 |
| Publication Year: |
2021 |
| Collection: |
Ghent University Academic Bibliography |
| Subject Terms: |
Physics and Astronomy; Condensed Matter Physics |
| Description: |
This paper summarizes the physical principles behind the novel three-ion scenarios using radio frequency waves in the ion cyclotron range of frequencies (ICRF). We discuss how to transform mode conversion electron heating into a new flexible ICRF technique for ion cyclotron heating and fast-ion generation in multi-ion species plasmas. The theoretical section provides practical recipes for selecting the plasma composition to realize three-ion ICRF scenarios, including two equivalent possibilities for the choice of resonant absorbers that have been identified. The theoretical findings have been convincingly confirmed by the proof-of-principle experiments in mixed H-D plasmas on the Alcator C-Mod and JET tokamaks, using thermal He-3 and fast D ions from neutral beam injection as resonant absorbers. Since 2018, significant progress has been made on the ASDEX Upgrade and JET tokamaks in H-He-4 and H-D plasmas, guided by the ITER needs. Furthermore, the scenario was also successfully applied in JET D-He-3 plasmas as a technique to generate fusion-born alpha particles and study effects of fast ions on plasma confinement under ITER-relevant plasma heating conditions. Tuned for the central deposition of ICRF power in a small region in the plasma core of large devices such as JET, three-ion ICRF scenarios are efficient in generating large populations of passing fast ions and modifying the q-profile. Recent experimental and modeling developments have expanded the use of three-ion scenarios from dedicated ICRF studies to a flexible tool with a broad range of different applications in fusion research. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://biblio.ugent.be/publication/8760964; https://doi.org/10.1063/5.0021818; https://biblio.ugent.be/publication/8760964/file/8760965 |
| DOI: |
10.1063/5.0021818 |
| Availability: |
https://biblio.ugent.be/publication/8760964; https://hdl.handle.net/1854/LU-8760964; https://doi.org/10.1063/5.0021818; https://biblio.ugent.be/publication/8760964/file/8760965 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.AF2A834F |
| Database: |
BASE |