Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session CP11: Poster Session II: Basic Plasma Physics; Boundary, PMI, Proto-MPEX; International Tokamaks; Turbulence and Transport; Other Configurations; Z-pinch, Dense Plasma Focus and MagLIF (2:00pm-5:00pm)
Monday, November 5, 2018
OCC Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.CP11.101
Abstract: CP11.00101 : Calibration and performance evaluation of MSE Wavelength-Interpolation Background Subtraction on KSTAR*
Steven Douglas Scott
Steven Douglas Scott
In 2018, fifteen additional sightlines of a background polychromator system were fabricated and installed on the KSTAR MSE diagnostic, which now can subtract partially-polarized background light via wavelength interpolation on all 25 sightlines. This paper will discuss several calibrations of this instrument: standard polarization-angle calibrations with a rotating linearly-polarized light source; beam-into-gas calibrations to optimize filter passband placement relative to the beam-generated MSE spectrum; and calibrations to quantify Faraday rotation in the optical system. The overall system performance including measurement accuracy and ability to accurately measure /compensate the partially polarized background light over a range of plasma conditions will be discussed, based on data acquired in the upcoming KSTAR 2018 experimental run campaign. Preliminary considerations for the use of the polychromator channels that measure background light to provide a measurement of the Zeff profile will be presented.
*This work supported by US DoE contracts DE-SC0016409 and DE-AC02-09CH11466 and grant DE-SC0016614.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.CP11.101
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