A 60-GHz interferometer with a local oscillator integrated antenna array for divertor simulation experiments on GAMMA 10/PDX

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4961292· OSTI ID:22596428

Yoshikawa, M.; Shima, Y.; Nojiri, K.; Sakamoto, M.; Nakashima, Y. ^[1]; Wang, X. ^[2]; Kuwahara, D. ^[3]; Ito, N. ^[4]; Nagayama, Y. ^[5]; Mase, A. ^[6]

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1. Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577 (Japan)
2. Saitama University, Saitama 338-8570 (Japan)
3. Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 (Japan)
4. National Institute of Technology, Ube College, Ube, Yamaguchi 755-8555 (Japan)
5. National Institute of Fusion Science, Toki, Gifu 509-5292 (Japan)
6. Kyushu University, Kasuga, Fukuoka 816-8580 (Japan)

In conventional multichannel/imaging microwave diagnostics of interferometry, reflectometry, and electron cyclotron emission measurements, a local oscillator (LO) signal is commonly supplied to a receiver array via irradiation using LO optics. In this work, we present a 60-GHz interferometer with a new eight-channel receiver array, called a local oscillator integrated antenna array (LIA). An outstanding feature of LIA is that it incorporates a frequency quadrupler integrated circuit for LO supply to each channel. This enables simple and uniform LO supply to the receiver array using only a 15-GHz LO source and a coaxial cable transmission line instead of using an expensive 60-GHz source, LO optics, and a waveguide transmission line. The new interferometer system is first applied to measure electron line-averaged density inside the divertor simulation experimental module (D-module) on GAMMA 10/PDX tandem mirror device.

• OSTI ID: 22596428
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANTENNAS
COAXIAL CABLES
COMPUTERIZED SIMULATION
CYCLOTRONS
DENSITY
DIVERTORS
ELECTRONS
GAMMA 10 DEVICES
GHZ RANGE 01-100
INTEGRATED CIRCUITS
INTERFEROMETERS
INTERFEROMETRY
IRRADIATION
MICROWAVE RADIATION
OPTICS
OSCILLATORS
SIGNALS
TMR REACTORS
TMX DEVICES
WAVEGUIDES