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TJ-II:Reflectometry: Difference between revisions
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for measuring electron density profiles with a temporal resolution of 2 ms. | for measuring electron density profiles with a temporal resolution of 2 ms. | ||
Separate antennas are used for launching and receiving the signal. The antennas are located in the equatorial plane of the toroidal cross-section at φ = 135° (between [[TJ-II:Sectors|sectors]] A4 and A5), and view the plasma from the low-field side. | Separate antennas are used for launching and receiving the signal. The antennas are located in the equatorial plane of the toroidal cross-section at φ = 135° (between [[TJ-II:Sectors|sectors]] A4 and A5), and view the plasma from the low-field side. | ||
Inside the [[TJ-II:Vacuum system|vacuum vessel]], a fundamental wave-guide is used to transmit the signal from the closest port (A4top: φ = 128.17°, θ = 90°) to the desired launching location (φ = 135°, θ = 180°). | Inside the [[TJ-II:Vacuum system|vacuum vessel]], a fundamental wave-guide is used to transmit the signal from the closest port ([[TJ-II:Ports|A4top]]: φ = 128.17°, θ = 90°) to the desired launching location (φ = 135°, θ = 180°). | ||
== Fluctuation Reflectometer == | == Fluctuation Reflectometer == | ||