Adaptive-Array electron cyclotron emission diagnostics using data streaming in a software defined radio system

H. Idei, K. Mishra, M. K. Yamamoto, M. Hamasaki, A. Fujisawa, Y. Nagashima, Y. Hayashi, T. Onchi, K. Hanada, H. Zushi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Measurement of the Electron Cyclotron Emission (ECE) spectrum is one of the most popular electron temperature diagnostics in nuclear fusion plasma research. A 2-dimensional ECE imaging systemwas developed with an adaptive-Array approach. Aradio-frequency (RF) heterodyne detection system with Software Defined Radio (SDR) devices and a phased-Array receiver antenna was used to measure the phase and amplitude of the ECE wave. The SDR heterodyne system could continuously measure the phase and amplitude with sufficient accuracy and time resolution while the previous digitizer system could only acquire data at specific times. Robust streaming phase measurements for adaptive-Arrayed continuous ECE diagnostics were demonstrated using Fast Fourier Transform (FFT) analysis with the SDR system. The emission field pattern was reconstructed using adaptive-Array analysis. The reconstructed profileswere discussed using profiles calculated from coherent single-frequency radiation from the phase array antenna.

Original languageEnglish
Article numberC04010
JournalJournal of Instrumentation
Volume11
Issue number4
DOIs
Publication statusPublished - Apr 14 2016

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Streaming Data
Radio systems
Cyclotrons
cyclotrons
Diagnostics
Electron
computer programs
Software
Electrons
Heterodyne
electrons
Plasma diagnostics
Antenna phased arrays
Phase measurement
Electron temperature
analog to digital converters
antenna arrays
phased arrays
Phase Measurement
Phased Array

All Science Journal Classification (ASJC) codes

  • Mathematical Physics
  • Instrumentation

Cite this

Adaptive-Array electron cyclotron emission diagnostics using data streaming in a software defined radio system. / Idei, H.; Mishra, K.; Yamamoto, M. K.; Hamasaki, M.; Fujisawa, A.; Nagashima, Y.; Hayashi, Y.; Onchi, T.; Hanada, K.; Zushi, H.

In: Journal of Instrumentation, Vol. 11, No. 4, C04010, 14.04.2016.

Research output: Contribution to journalArticle

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AU - Mishra, K.

AU - Yamamoto, M. K.

AU - Hamasaki, M.

AU - Fujisawa, A.

AU - Nagashima, Y.

AU - Hayashi, Y.

AU - Onchi, T.

AU - Hanada, K.

AU - Zushi, H.

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