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Title: Dual array 3D electron cyclotron emission imaging at ASDEX Upgrade

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.
Authors:
;  [1] ; ;  [2] ; ;  [3] ;  [4] ;  [1] ;  [5]
  1. FOM-Institute DIFFER, Dutch Institute for Fundamental Energy Research, 3430 BE Nieuwegein (Netherlands)
  2. Department of Applied Science, University of California at Davis, Davis, California 95616 (United States)
  3. Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching (Germany)
  4. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540 (United States)
  5. (Netherlands)
Publication Date:
OSTI Identifier:
22308620
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ASDEX TOKAMAK; EDGE LOCALIZED MODES; ELECTRON CYCLOTRON-RESONANCE; ELECTRON TEMPERATURE; EMISSION; PLASMA