Dual array 3D electron cyclotron emission imaging at ASDEX Upgrade

TitleDual array 3D electron cyclotron emission imaging at ASDEX Upgrade
Publication TypeJournal Article
Year of Publication2014
AuthorsI.G.J. Classen, C.W. Domier, NC Luhmann, Jr., A.V. Bogomolov, W. Suttrop, J.E Boom, B.J Tobias, A.JH Donne, ASDEX-Upgrade Team
JournalReview of Scientific Instruments
Volume85
Number11
Pagination11D833
Keywordscyclotrons, image sensors, plasma devices, plasma diagnostics, plasma instability, sensor arrays, temperature measurement
Abstract

In a major upgrade, the (2D) electron cyclotron emission imaging diagnostic (ECEI) at ASDEX Upgrade has been equipped with a second detector array, observing a different toroidal position in the plasma, to enable quasi-3D measurements of the electron temperature. The new system will measure a total of 288 channels, in two 2D arrays, toroidally separated by 40 cm. The two detector arrays observe the plasma through the same vacuum window, both under a slight toroidal angle. The majority of the field lines are observed by both arrays simultaneously, thereby enabling a direct measurement of the 3D properties of plasma instabilities like edge localized mode filaments.

DOI10.1063/1.4891061
Division

FP

Department

PDG

PID

013d1c201fe42ac6185d001e3d6a8392

Alternate TitleRev. Sci. Instrum.

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