Evaluation of the imaging properties of Microwave Imaging Reflectometry
SCIE
SCOPUS
- Title
- Evaluation of the imaging properties of Microwave Imaging Reflectometry
- Authors
- Hong, I; Woochang Lee; June-eok Leem; Yunbeom Nam; Minwoo Kim; Gunsu Yun; Park, HK; Domier, CW; Luhmann, NC
- Date Issued
- 2012-01
- Publisher
- IOP Publishing
- Abstract
- Microwave Imaging Reflectometry (MIR) has been developed for unambiguous measurement of electron density fluctuations in fusion plasmas. The loss of phase information limiting the use of conventional reflectometry can be minimized by a large aperture imaging optics and an array of detectors in the MIR embodiment. The evaluation of the optical system is critical for precise reconstruction of the fluctuations. The optical systems of the prototype TEXTOR MIR [2] and newly-designed KSTARMIR [5] systems have been tested with a corrugated target simulating density fluctuations at the cut-off surface. The reconstructed phase from the MIR system has been compared to the directly measured phase of corrugations taking into account the rotational speed of the target. The effects of optical aberrations and interference between lenses on the phase reconstruction have been investigated by the 2D amplitude measurement of the reflected waves and the diffraction-based optical simulations. (CODE V) A preliminary design of the KSTAR MIR optics has been suggested which can minimize the aberration and interference effects.
- Keywords
- Plasma diagnostics - interferometry, spectroscopy and imaging; Nuclear instruments and methods for hot plasma diagnostics; FLUCTUATION MEASUREMENTS; SYSTEM
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15622
- DOI
- 10.1088/1748-0221/7/01/C01077
- ISSN
- 1748-0221
- Article Type
- Article
- Citation
- JOURNAL OF INSTRUMENTATION, vol. 7, no. 1, page. C01077, 2012-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.