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Novel analysis technique for measuring edge density fluctuation profiles with reflectometry in the Large Helical Device

Creely, A. J.; Ida, K.; Yoshinuma, M.; TOKUZAWA, Tokihiko; Tsujimura, T.; Akiyama, T.; Sakamoto, R.; Emoto, M.; Tanaka, K.; Michael, Clive

Description

A new method for measuring density fluctuation profiles near the edge of plasmas in the Large Helical Device (LHD) has been developed utilizing reflectometry combined with pellet-induced fast density scans. Reflectometer cutoff location was calculated by proportionally scaling the cutoff location calculated with fast far infrared laser interferometer (FIR) density profiles to match the slower time resolution results of the ray-tracing code LHD-GAUSS. Plasma velocity profile peaks generated with...[Show more]

CollectionsANU Research Publications
Date published: 2017-07-19
Type: Journal article
URI: http://hdl.handle.net/1885/214055
Source: Review of Scientific Instruments
DOI: 10.1063/1.4993437
Access Rights: Open Access

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