First application of ion cyclotron resonant frequency waves on west plasma scenarios

the WEST team

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Résumé

In 2018, Ion Cyclotron Resonant Frequency (ICRF) waves were for the first time applied to the WEST plasma scenarios. In ICRF-only plasmas at medium density, or on top of a low level of Lower Hybrid (LH) power, the coupled ICRF power increases the plasma energy content. However in discharges with large LH power at high core density, nearly all the applied ICRF power gets radiated, mainly in the plasma bulk. Both the energy content and conducted power decrease. Two peculiarities of WEST, that may combine, are presently invoked to explain this phenomenology:1) Fast ion ripple losses, evidenced between TF coils on the baffle, likely degrade the ICRF heating efficiency. 2) RF-enhanced W sources, evidenced on several Plasma-Facing Components (PFCs), likely over-contaminate the high-power plasmas.

langue originaleAnglais
titre23rd Topical Conference on Radiofrequency Power in Plasmas
rédacteurs en chefPaul T. Bonoli, Robert I. Pinsker, Xiaojie Wang
EditeurAmerican Institute of Physics Inc.
ISBN (Electronique)9780735420137
Les DOIs
étatPublié - 16 sept. 2020
Evénement23rd Topical Conference on Radiofrequency Power in Plasmas - Hefei, Chine
Durée: 14 mai 201917 mai 2019

Série de publications

NomAIP Conference Proceedings
Volume2254
ISSN (imprimé)0094-243X
ISSN (Electronique)1551-7616

Une conférence

Une conférence23rd Topical Conference on Radiofrequency Power in Plasmas
Pays/TerritoireChine
La villeHefei
période14/05/1917/05/19

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