Electron cyclotron emission diagnostics on KSTAR tokamak |
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| Authors: | Jeong S H Lee K D Kogi Y Kawahata K Nagayama Y Mase A Kwon M |
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| Affiliation: | Korea Atomic Energy Research Institute, 1045 Daedeokdaero, Daejeon 305-353, Republic of Korea. shjeong2@kaeri.re.kr |
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| Abstract: | A new electron cyclotron emission (ECE) diagnostics system was installed for the Second Korea Superconducting Tokamak Advanced Research (KSTAR) campaign. The new ECE system consists of an ECE collecting optics system, an overmode circular corrugated waveguide system, and 48 channel heterodyne radiometer with the frequency range of 110-162 GHz. During the 2 T operation of the KSTAR tokamak, the electron temperatures as well as its radial profiles at the high field side were measured and sawtooth phenomena were also observed. We also discuss the effect of a window on in situ calibration. |
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