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Design and characteristics of a low-frequency magnetic probe for magnetic profile measurements at Wendelstein 7-X

W7-X Team; Knieps, A.; Liang, Y.; Drews, P.; Endler, M.; Grulke, O.; Huang, Z.; Killer, C.; Liu, S.; Nicolai, D.; Rahbarnia, K.; Sandri, N.; Satheeswaran, G.; Gantenbein, Gerd; Huber, Martina; Illy, Stefan; Jelonnek, John; Kobarg, Thorsten; Lang, Rouven; Leonhardt, Wolfgang; Losert, M.; ... mehr

Abstract:
Equilibrium analysis in fusion devices usually relies on plasma pressure profiles and magnetic measurements outside the plasma. The kinetic profiles can give indirect information about the equilibrium magnetic field, while the stationary magnetic diagnostics cannot resolve current distributions on a smaller scale. This work presents a reciprocating magnetic probe, designed to provide direct plasma response measurements of the magnetic field in the scrape-off layer of Wendelstein 7-X. Hardware design and frequency characteristics are discussed, and a post-processing technique for extending the lower frequency cutoff of the integration scheme is presented.

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Originalveröffentlichung
DOI: 10.1063/5.0002193
Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2020
Sprache Englisch
Identifikator ISSN: 0034-6748, 1089-7623
KITopen-ID: 1000121989
HGF-Programm 31.03.02 (POF III, LK 01)
Plasma Heizsysteme
Erschienen in Review of scientific instruments
Band 91
Heft 7
Seiten 073506
Projektinformation EUROfusion (EU, H2020, 633053)
Vorab online veröffentlicht am 17.07.2020
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