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

M. Sato; A. Isayama; S. Inagaki; Y. Nagayama; K. Kawahata; N. Iwama

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

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

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
Pages	1690-1693
Number of pages	4
Publication status	Published - 2005
Externally published	Yes
Event	32nd 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 2005 → Jul 1 2005

Publication series

Name	32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
Volume	3

Other

Other	32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets
Country/Territory	Spain
City	Tarragona
Period	6/27/05 → 7/1/05

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Sato, M., Isayama, A., Inagaki, S., 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 (pp. 1690-1693). (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).

Relativistic downshift frequency effects on ECE measurements of electron temperature and density in torus plasmas. / Sato, M.; Isayama, A.; Inagaki, S. et al.
32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts. 2005. p. 1690-1693 (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).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sato, M, Isayama, A, Inagaki, S, 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. 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, 32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets, Tarragona, Spain, 6/27/05.

Sato M, Isayama A, Inagaki S, Nagayama Y, Kawahata K, Iwama N. 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. 2005. p. 1690-1693. (32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts).

Sato, M. ; Isayama, A. ; Inagaki, S. et al. / Relativistic downshift frequency effects on ECE measurements of electron temperature and density in torus plasmas. 32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts. 2005. pp. 1690-1693 (32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts).

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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.",

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AU - Iwama, N.

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AB - 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.

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

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