Upper wide-angle viewing system for ITER

Journal Article · Mon Aug 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4960489· OSTI ID:1365654

Lasnier, C. J. ^[1]; McLean, A. G. ^[1]; Gattuso, A.  ^[2]; O’Neill, R. ^[2]; Smiley, M. ^[2]; Vasquez, J. ^[2]; Feder, R. ^[3]; Smith, M. ^[3]; Stratton, B. ^[3]; Johnson, D.  ^[3]; Verlaan, A. L. ^[4]; Heijmans, J. A. C. ^[4]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
2. General Atomics, San Diego, CA (United States)
3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
4. TNO, Delft (Netherlands)

The Upper Wide Angle Viewing System (UWAVS) will be installed on five upper ports of ITER. Here, 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.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Fusion Energy Sciences (FES)
• Grant/Contract Number: AC02-09CH11466; AC52-07NA27344
• OSTI ID: 1365654
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
Mirrors
Cameras
Infrared optics
Infrared detectors
Emissivity