Calibration of electron cyclotron emission radiometer for KSTAR

Kogi, Y.; Jeong, S. H.; Lee, K. D.; Akaki, K.; Mase, A.; Kuwahara, D.; Yoshinaga, T.; Nagayama, Y.; Kwon, M.; Kawahata, K.
October 2010
Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D916
Academic Journal
We developed and installed an electron cyclotron emission radiometer for taking measurements of Korea Superconducting Tokamak Advanced Research (KSTAR) plasma. In order to precisely measure the absolute value of electron temperatures, a calibration measurement of the whole radiometer system was performed, which confirmed that the radiometer has an acceptably linear output signal for changes in input temperature. It was also found that the output power level predicted by a theoretical calculation agrees with that obtained by the calibration measurement. We also showed that the system displays acceptable noise-temperature performance around 0.23 eV.


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