Upper wide-angle viewing system for ITER
conference paper
The Upper Wide Angle Viewing System (UWAVS) will be installed on five upper ports of ITER. This paper shows major requirements, gives an overview of the preliminary design with reasons for some design choices, examines self-emitted IR light from UWAVS optics and its effect on accuracy, and shows calculations of signal-to-noise ratios for the two-color temperature output as a function of integration time and divertor temperature. Accurate temperature output requires correction for vacuum window absorption vs. wavelength and for self-emitted IR, which requires good measurement of the temperature of the optical components. The anticipated signal-to-noise ratio using presently available IR cameras is adequate for the required 500 Hz frame rate.
TNO Identifier
572339
ISSN
00346748
Publisher
Lawrence Livermore National Laboratory
Article nr.
822391
LLNL-CONF-694074
LLNL-CONF-694074
Source title
21st Topical Conference on High-Temperature Plasma Diagnostics, Madison, WI, USA, 6-9 June 2016
Collation
5 p.
Place of publication
Livermore, CA, USA
Files
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