2024
DOI: 10.1063/5.0219456
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Conceptual design of a Doppler spectrometer for 102 m/s cross-field flows in tokamak divertors

K. Fujii,
R. Sano,
T. Nakano
et al.

Abstract: The cross-field transport in the scrape-off-layers (SOLs) and divertors in tokamaks is of a similar size to the poloidal component of the parallel flow, thereby significantly impacting the plasma transport there. However, its direct observation has been challenging because the drift velocity (102–103 m/s) is significantly below the detection limit of conventional diagnostics. To realize cross-field ion flow measurement, a variety of systematic uncertainties in the system must be narrowed down. Here, we develop… Show more

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