Main-ion temperature and plasma rotation measurements based on scattering of electron cyclotron heating waves in ASDEX Upgrade. (2nd June 2017)

• Record Type: Journal Article
• Authors: Stejner, M; Rasmussen, J; Nielsen, S K; Jacobsen, A S; Korsholm, S B; Leipold, F; McDermott, R M; Salewski, M; Schubert, M; Stober, J; Wagner, D H
• Other Names: collab.; collab.
• Is Part Of: Plasma physics and controlled fusion. Volume 59:Number 7(2017:Jul.)
• Publication Date: 2017-06-02
• Subjects: main-ion temperature -- plasma rotation -- collective Thomson scattering -- electron cyclotron resonance heating; 52.25.Os -- 52.35.Hr -- 52.40.Db -- 52.70.Gw -- 52.70.-m; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/1361-6587/aa711a
• Languages: English
• ISSNs: 0741-3335

Abstract

Abstract: We demonstrate measurements of spectra of O-mode electron cyclotron resonance heating (ECRH) waves scattered collectively from microscopic plasma fluctuations in ASDEX Upgrade discharges with an ITER-like ECRH scenario. The measured spectra are shown to allow determination of the main ion temperature and plasma rotation velocity. This demonstrates that ECRH systems can be exploited for diagnostic purposes alongside their primary heating purpose in a reactor relevant scenario.