Millimeter wave imaging diagnostic for simultaneous density and temperature fluctuation measurements on the TEXTOR Tokamak

A J H Donne,I G J Classen,C W Domier,Michael T Johnson,N C Luhmann,E Mazzucato,Tobin Leo Munsat,H Park,M J Van De Pol,Jun Wang,Z Xia

international conference on infrared, millimeter, and terahertz waves（2004）

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摘要

A millimeter wave imaging diagnostic for simultaneous density and temperature fluctuation measurements has been developed for operation on the TEXTOR Tokamak. The system is based on the quasi-optical imaging of the radiation from the plasma onto state-of-the-art millimeter wave mixer/receiver arrays. The temperature (fluctuation) measurements are based on the observation of electron cyclotron emission from a 2D plasma area with 8×16 sample volumes of about 1 cm3. The density fluctuation measurements are based on active probing by means of reflectometry. In this case reflections from 16 sample volumes, arranged along the cutoff surfaces are diagnosed. The combined millimeter wave imaging diagnostic offers distinct advantages above the commonly used non-imaging diagnostics.

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关键词

tokamak devices,density measurement,electron emission,microwave reflectometry,millimetre wave imaging,millimetre wave measurement,millimetre wave mixers,millimetre wave receivers,millimetre waves,plasma density,plasma diagnostics,plasma temperature,temperature measurement,2d plasma emission,textor tokamak,active probing,electron cyclotron emission imaging,microwave imaging reflectometry,millimeter wave imaging diagnostics,millimeter wave mixer arrays,millimeter wave receiver arrays,plasma density measurements,plasma radiation,plasma temperature fluctuation measurements,quasioptical imaging,millimeter wave

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