Plasma and Fusion Research

Volume 9, 3402021 (2014)

Regular Articles

Digital Correlation ECE Measurement Technique with a Gigahertz Sampling Digitizer
Hayato TSUCHIYA, Sigeru INAGAKI1,2), Tokihiko TOKUZAWA, Naoki TAMURA and Yoshio NAGAYAMA
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
2)
Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
(Received 10 December 2013 / Accepted 22 January 2014 / Published 7 April 2014)

Abstract

The concept of digital correlation electron cyclotron emission (ECE) measurement is proposed for studying of the mesoscale phenomena. The recent progress in fast sampling and computing enables the acquisition of waveforms of intermediate frequency (IF) in the range of several gigahertz. Correlation analysis using an IF digitizing technique can be helpful for analyzing mesoscale phenomena. This paper discusses the concept and characteristics of the IF digitizing technique for correlation analysis, and presents an example of IF waveform acquisition of ECE.

Keywords

ECE, correlation, gigahertz sampling, intermediate frequency, mesoscale turbulence, LHD

DOI: 10.1585/pfr.9.3402021

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This paper may be cited as follows:

Hayato TSUCHIYA, Sigeru INAGAKI, Tokihiko TOKUZAWA, Naoki TAMURA and Yoshio NAGAYAMA, Plasma Fusion Res. 9, 3402021 (2014).