TITLE

Calibration of electron cyclotron emission radiometer for KSTAR

AUTHOR(S)
Kogi, Y.; Jeong, S. H.; Lee, K. D.; Akaki, K.; Mase, A.; Kuwahara, D.; Yoshinaga, T.; Nagayama, Y.; Kwon, M.; Kawahata, K.
PUB. DATE
October 2010
SOURCE
Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D916
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
54858105

 

Related Articles

  • Comparative electron temperature measurements of Thomson scattering and electron cyclotron emission diagnostics in TCABR plasmas. Alonso, M. P.; Figueiredo, A. C. A.; Borges, F. O.; Elizondo, J. I.; Galvão, R. M. O.; Severo, J. H. F.; Usuriaga, O. C.; Berni, L. A.; Machida, M. // Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D529 

    We present the first simultaneous measurements of the Thomson scattering and electron cyclotron emission radiometer diagnostics performed at TCABR tokamak with Alfvén wave heating. The Thomson scattering diagnostic is an upgraded version of the one previously installed at the ISTTOK tokamak,...

  • Density fluctuation effects on electron cyclotron emission correlation measurements in optically gray plasmas. Rempel, T. D.; Gandy, R. F.; Wootton, A. J. // Review of Scientific Instruments;Jun94, Vol. 65 Issue 6, p2044 

    Measurements of electron temperature using electron cyclotron emission (ECE) may be contaminated by density effects in plasmas with low optical depth. ECE intensity fluctuations in these plasmas will include a component dependent on density fluctuations as well. Correlation measurements, which...

  • ECE for NTM control on ITER. van den Brand, H.; de Baar, M. R.; Cardozo, N. J. Lopes; Westerhof, E. // EPJ Web of Conferences;2012, Issue 32, p03004-p.1 

    Control of Neoclassical Tearing Modes (NTMs) requires an accurate and low latency detection of the mode position. For a burning H-mode ITER plasma, simulations are conducted for both ECE detected via the equatorial port plug and along the line-of-sight of the ECCD launchers. Simulated ECE is...

  • Effects of electron temperature and electron flow on O-X conversion. Jia, Guo-Zhang; Gao, Zhe; Zhao, Ai-Hui // Physics of Plasmas;Oct2013, Vol. 20 Issue 10, p102509 

    Effects of electron temperature and electron flow on Ordinary-Extraordinary (O-X) conversion in the range of electron cyclotron frequency are investigated. The modified optimal parallel refraction index, Nzc, and the conversion coefficient are obtained analytically from the kinetic dispersion...

  • Determination of equilibrium density distribution and temperature of a pure electron plasma confined in a Penning trap. Aoki, J.; Kiwamoto, Y.; Kawai, Y. // Physics of Plasmas;Nov2006, Vol. 13 Issue 11, p112109 

    A fast scheme is proposed for determining the three-dimensional density distribution of a pure electron plasma under the thermal relaxation in a Penning trap on the basis of the observation of the axially integrated density distribution. The analysis that includes the contribution of the...

  • Spatially resolved measurements of two-dimensional turbulent structures in DIII-D plasmas. Zemedkun, S. E.; Che, S.; Chen, Y.; Domier, C. W.; Luhmann Jr., N. C.; Munsat, T.; Parker, S. E.; Tobias, B.; Wan, W.; Yu, L. // Physics of Plasmas;Dec2015, Vol. 22 Issue 12, p1 

    Two-dimensional observations of spatially coherent electron temperature fluctuations at drift-wave scales (k~ 1 cm-1) have been made using the electron cyclotron emission imaging diagnostic on the DIII-D tokamak. These measurements enable the extraction of spectral properties, including poloidal...

  • Characterization of direct current He-N2 mixture plasma using optical emission spectroscopy and mass spectrometry. Flores, O.; Castillo, F.; Martinez, H.; Villa, M.; Villalobos, S.; Reyes, P. G. // Physics of Plasmas;May2014, Vol. 21 Issue 5, p053502-1 

    This study analyses the glow discharge of He N mixture at the pressure of . Torr power of W flow rate of . l/min by using optical emission spectroscopy mass spectrometry. The emission bands were measured in the wavelength range of - nm. The principal species observed were N2+ (B2...

  • Measurement of rotational temperature using SiH(A2Δ-X2Π) emission spectrum in SiH4–H2 plasmas. Se Youn Moon; Kim, W. Y.; Lee, H. C.; Ahn, S. W.; Lee, H. M.; Choe, W. // Physics of Plasmas;Aug2010, Vol. 17 Issue 8, p083501 

    Based on the synthetic spectrum method of comparing with the experimental SiH(A2Δ-X2Π) diatomic molecular emission spectrum, the rotational temperatures of SiH4–H2 plasmas were investigated for various operating conditions. The plasma was generated between parallel plate electrodes...

  • Lower hybrid current drive and ion cyclotron range of frequencies heating experiments in H-mode plasmas in Experimental Advanced Superconducting Tokomak. Zhang, X. J.; Wan, B. N.; Zhao, Y. P.; Ding, B. J.; Xu, G. S.; Gong, X. Z.; Li, J. G.; Lin, Y.; Taylor, G.; Noterdaeme, J. M.; Braun, F.; Wukitch, S.; Magne, R.; Litaudon, X.; Kumazawa, R.; Kasahara, H. // Physics of Plasmas;Jun2014, Vol. 21 Issue 6, p1 

    An ion cyclotron range of frequencies (ICRF) system with power up to 6.0MW and a lower hybrid current drive (LHCD) system up to 4MW have been applied for heating and current drive experiments in Experimental Advanced Superconducting Tokomak (EAST). Significant progress has been made with ICRF...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics