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ID 18619
file
creator
Yamaguchi, Yusuke
Ichimura, Makoto
Kakimoto, Singo
Nakagome, Kenichirou
Nemoto, Kenju
Katano, Makoto
Nakajima, Hajime
Fukuyama, Atsushi
Cho, Teruji
abstract
A wide-band radio-frequency (rf) probe system was constructed for the active diagnostic of the eigenmode formations in the ion-cyclotron range of frequency (ICRF) in GAMMA10. An antenna was installed in the peripheral region in the central cell. The low power rf pulse with the frequency sweep is applied to the antenna. The waves excited in the plasma are detected with a magnetic probe. The excitation of eigenmodes is described by using the antenna-plasma-probe transfer function. The transfer function can be obtained from the antenna current signal and the magnetic probe signal. When the real and imaginary parts of the transfer function are plotted on the complex plane, the resultant curves are approximately circular, indicating an eigenmode formation. The results of the measurement show that several eigenmodes can be excited in the present experimental condition.
journal title
Review of Scientific Instruments
volume
Volume 77
issue
Issue 10
date of issued
2006-10
publisher
American Institute of Physics
issn
0034-6748
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2006 American Institute of Physics.
relation url
department
Graduate School of Advanced Sciences of Matter



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