Relativistic downshift frequency effects on ECE measurements of electron temperature and density in torus plasmas

M. Sato, A. Isayama, Inagaki Shigeru, Y. Nagayama, K. Kawahata, N. Iwama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The measurement of electron density and temperature from electron cyclotron emission (ECE) is studied using a numerical calculation taking into account the relativistic effect. For the measurement of the electron temperature profile in Large Helical Device (LHD) in order to avoid the relativistic effect of 2nd harmonic ECE at the center and the absorption effect at the outer periphery, the location of the observing port should be at the opposite side of the highest magnetic field point with respect to the plasma center. The measurement of the electron density profile from ECE proposed can be applicable for various electron density profiles in tokamak.

Original languageEnglish
Title of host publication32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
Pages1690-1693
Number of pages4
Volume3
Publication statusPublished - Dec 1 2005
Externally publishedYes
Event32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets - Tarragona, Spain
Duration: Jun 27 2005Jul 1 2005

Other

Other32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets
CountrySpain
CityTarragona
Period6/27/057/1/05

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Sato, M., Isayama, A., Shigeru, I., Nagayama, Y., Kawahata, K., & Iwama, N. (2005). Relativistic downshift frequency effects on ECE measurements of electron temperature and density in torus plasmas. In 32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts (Vol. 3, pp. 1690-1693)