Phased array Doppler reflectometry at Wendelstein 7-X.

T WindischS WolfG M WeirS A Bozhenkov H DammG FuchertO GrulkeM HirschW KasparekT KlingerC LechteE PaschB PlaumE A Scottnull null

Published in: The Review of scientific instruments (2018)

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° 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.

Keyphrases

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