Title :
Differential-phase reflectometry using phased-array antenna system in QUEST
Author :
Nagata, K. ; Idei, H. ; Sakaguchi, M. ; Dono, K. ; Wataya, Y. ; Kawasaki, S. ; Zushi, H. ; Hanada, K. ; Nakamura, K. ; Sakamoto, M. ; Hasegawa, M. ; Higashizono, Y. ; Takase, Y. ; Maekawa, T. ; Mitarai, O. ; Kishimoto, Y. ; Nakashima, H. ; Higashijima, A.
Author_Institution :
Interdiscipl. Grad. Sch. of Eng. Sci., Kyushu Univ., Kasuga, Japan
Abstract :
The differential-phase reflectometry has been developed to measure the density profile, concerning electron Bernstein Wave (EBW) heating and current drive in the QUEST. The Phased Array Antenna (PAA) system was proposed for the reflectometry to improve the ratio of signal to noise. The PAA was confirmed to be effective, as a launching antenna to receive the larger reflected-wave signal.
Keywords :
antenna phased arrays; density measurement; microwave reflectometry; plasma Bernstein waves; EBW heating; PAA system; QUEST; density profile measurement; differential phase reflectometry; electron Bernstein wave heating; phased array launching antenna system; reflected wave signal; signal to noise ratio; Antenna measurements; Couplings; Phase measurement; Receiving antennas; Reflectometry; Reflector antennas;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612434
