TJ-II:Reflectometry: Difference between revisions

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<ref>[http://dx.doi.org/10.1088/0741-3335/43/11/308 T. Estrada et al., Plasma Phys. Control. Fusion '''43''' (2001) 1535–1545]</ref>
<ref>[http://dx.doi.org/10.1088/0741-3335/43/11/308 T. Estrada et al., Plasma Phys. Control. Fusion '''43''' (2001) 1535–1545]</ref>
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 &phi; = 45º (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 &phi; = 135&deg; (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: &phi; = 38.17º, &theta; = 90º) to the desired launching location (&phi; = 45º, &theta; = 180º).
Inside the [[TJ-II:Vacuum system|vacuum vessel]], a fundamental wave-guide is used to transmit the signal from the closest port (A4top: &phi; = 128.17&deg;, &theta; = 90&deg;) to the desired launching location (&phi; = 135&deg;, &theta; = 180&deg;).


== Fluctuation Reflectometer ==
== Fluctuation Reflectometer ==

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