TY - JOUR
T1 - A calibration of setting of mach probes by observing GAM oscillations
AU - Itoh, Kimitaka
AU - Zhao, Kaijun
AU - Dong, Jiaqi
AU - Itoh, Sanae I.
AU - Fujisawa, Akihide
AU - Inagaki, Shigeru
AU - Sasaki, Makoto
AU - Nagashima, Yoshihiko
AU - Kosuga, Yusuke
AU - Cheng, Jun
AU - Kobayashi, Tatsuya
N1 - Publisher Copyright:
© 2015 The Japan Society of Plasma Science and Nuclear Fusion Research.
PY - 2016
Y1 - 2016
N2 - The influence of relative displacement of Mach probe (which is placed near the top of magnetic surface) on the interference of signals is discussed. An error can arise in measured value of poloidal electric field. The Mach number perturbation at the GAM frequency has an interference from the density perturbation. The interference from the density perturbation can propagate to all of Mach number measurement. By observing the signals associated with GAM oscillations, the error in setting the probe arrays can be detected. This result can be applied to correct the positioning of probes.
AB - The influence of relative displacement of Mach probe (which is placed near the top of magnetic surface) on the interference of signals is discussed. An error can arise in measured value of poloidal electric field. The Mach number perturbation at the GAM frequency has an interference from the density perturbation. The interference from the density perturbation can propagate to all of Mach number measurement. By observing the signals associated with GAM oscillations, the error in setting the probe arrays can be detected. This result can be applied to correct the positioning of probes.
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U2 - 10.1585/pfr.11.1402002
DO - 10.1585/pfr.11.1402002
M3 - Article
AN - SCOPUS:85034663693
SN - 1880-6821
VL - 11
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 1402002
ER -