Validation experiment of a numerically processed millimeter-wave interferometer in a laboratory

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4893430· OSTI ID:22303686

Higashi, T.; Matsukawa, S. ^[1]; Mase, A. ^[2]; Kohagura, J.; Yoshikawa, M. ^[3]; Nagayama, Y.; Kawahata, K. ^[4]; Kuwahara, D. ^[5]

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1. Department of Information Electronics, Fukuoka Institute of Technology, Fukuoka 811-0295 (Japan)
2. Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga, Fukuoka 816-0811 (Japan)
3. Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577 (Japan)
4. National Institute for Fusion Science, Toki, Gifu 509-5202 (Japan)
5. Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 (Japan)

We propose a new interferometer system for density profile measurements. This system produces multiple measurement chords by a leaky-wave antenna driven by multiple frequency inputs. The proposed system was validated in laboratory evaluation experiments. We confirmed that the interferometer generates a clear image of a Teflon plate as well as the phase shift corresponding to the plate thickness. In another experiment, we confirmed that quasi-optical mirrors can produce multiple measurement chords; however, the finite spot size of the probe beam degrades the sharpness of the resulting image.

• OSTI ID: 22303686
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; 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
DENSITY
INTERFEROMETERS
MIRRORS
NUMERICAL ANALYSIS
PLATES
TEFLON
THICKNESS
VALIDATION