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Park, Hyeon Keo
Fusion Plasma Stability and Confinement Research Lab
Research Interests
  • Fusion, plasma, MHD, turbulence, imaging

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Alternative optical concept for electron cyclotron emission imaging

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Title
Alternative optical concept for electron cyclotron emission imaging
Author
Liu, J.X.Milbourne, T.Bitter, M.Delgado-Aparicio, L.Dominguez, A.Efthimion, P.C.Hill, K.W.Kramer, G.J.Kung, C.Kubota, S.Kasparek, W.Lu, J.Pablant, N.A.Park, Hyeon KeoTobias, B.
Issue Date
2014-11
Publisher
AMER INST PHYSICS
Citation
REVIEW OF SCIENTIFIC INSTRUMENTS, v.85, no.11, pp.11D802
Abstract
The implementation of advanced electron cyclotron emission imaging (ECEI) systems on tokamak experiments has revolutionized the diagnosis of magnetohydrodynamic (MHD) activities and improved our understanding of instabilities, which lead to disruptions. It is therefore desirable to have an ECEI system on the ITER tokamak. However, the large size of optical components in presently used ECEI systems have, up to now, precluded the implementation of an ECEI system on ITER. This paper describes a new optical ECEI concept that employs a single spherical mirror as the only optical component and exploits the astigmatism of such a mirror to produce an image with one-dimensional spatial resolution on the detector. Since this alternative approach would only require a thin slit as the viewing port to the plasma, it would make the implementation of an ECEI system on ITER feasible. The results obtained from proof-of-principle experiments with a 125 GHz microwave system are presented.
URI
https://scholarworks.unist.ac.kr/handle/201301/5261
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84903709342
DOI
10.1063/1.4884902
ISSN
0034-6748
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PHY_Journal Papers
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