Phased array Doppler reflectometry at Wendelstein 7-X

T. Windisch*, S. Wolf, G. M. Weir, S. A. Bozhenkov, H. Damm, G. Fuchert, Olaf Grulke, M. Hirsch, W. Kasparek, T. Klinger, C. Lechte, E. Pasch, B. Plaum, E. A. Scott, W7-X Team

*Corresponding author for this work

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Abstract

A passive phased array Doppler reflectometry system has recently been installed in the Wendelstein-7X stellarator. In contrast to conventional Doppler reflectometry systems, the microwave beam can be steered on short time scales in the measurement plane perpendicular to the magnetic field in the range of ±25 degrees without mechanical steering components. This paper characterizes the design and properties of the phased array antenna system and presents the first measurement results from the latest OP1.2a campaign.
Original languageEnglish
Article number10H115
JournalReview of Scientific Instruments
Volume89
Issue number10
Number of pages5
ISSN0034-6748
DOIs
Publication statusPublished - 2018

Cite this

Windisch, T., Wolf, S., Weir, G. M., Bozhenkov, S. A., Damm, H., Fuchert, G., Grulke, O., Hirsch, M., Kasparek, W., Klinger, T., Lechte, C., Pasch, E., Plaum, B., Scott, E. A., & Team, W-X. (2018). Phased array Doppler reflectometry at Wendelstein 7-X. Review of Scientific Instruments, 89(10), [10H115]. https://doi.org/10.1063/1.5039287