Quiescent regions below the X-point in ASDEX upgrade. (21st April 2021)

• Record Type: Journal Article
• Authors: Nem, R D; Manz, P; Juul Rasmussen, J; Vianello, N; Walkden, N; Naulin, V; Sieglin, B; Herrmann, A; Brida, D
• Other Names: collab.
• Is Part Of: Plasma physics and controlled fusion. Volume 63:Number 6(2021)
• Publication Date: 2021-04-21
• Subjects: X-point region -- quiescent regions -- private flux region -- fluctuations -- ASDEX upgrade tokamak -- divertor region -- X-point manipulator; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/1361-6587/abdc9c
• Languages: English
• ISSNs: 0741-3335

Abstract

Abstract: Probe measurements of plasma fluctuations in the divertor region of ASDEX Upgrade reveal the existence of two quiescent regions close to the separatrix: one on the low field side scrape-off layer and one on the high field side of the private flux region. The X-point manipulator at ASDEX Upgrade provides the unique possibility of obtaining continuous measurements of the ion-saturation current from the low field side scrape-off layer through the private flux region and into the high field side scrape-off layer.