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

the WEST team

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

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.

OriginalspracheEnglisch
Titel23rd Topical Conference on Radiofrequency Power in Plasmas
Redakteure/-innenPaul T. Bonoli, Robert I. Pinsker, Xiaojie Wang
Herausgeber (Verlag)American Institute of Physics Inc.
ISBN (elektronisch)9780735420137
DOIs
PublikationsstatusVeröffentlicht - 16 Sept. 2020
Veranstaltung23rd Topical Conference on Radiofrequency Power in Plasmas - Hefei, China
Dauer: 14 Mai 201917 Mai 2019

Publikationsreihe

NameAIP Conference Proceedings
Band2254
ISSN (Print)0094-243X
ISSN (elektronisch)1551-7616

Konferenz

Konferenz23rd Topical Conference on Radiofrequency Power in Plasmas
Land/GebietChina
OrtHefei
Zeitraum14/05/1917/05/19

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