Multichannel microwave interferometer for the levitated dipole experiment
作者： Alexander C. Boxer , Darren T. Garnier , Michael E. Mauel
DOI: 10.1063/1.3095684
关键词: Physics 、 Plasma diagnostics 、 Optics 、 Phase (waves) 、 Microwave 、 Dipole 、 Center frequency 、 Astronomical interferometer 、 Levitated dipole 、 Interferometry
摘要: A four-channel microwave interferometer (center frequency: 60 GHz) has been constructed to measure plasma density profiles in the levitated dipole experiment (LDX). The LDX a unique design owing geometry of LDX. main features are: (1) transmitted beam traverses entirely O-mode; (2) is heterodyne system employing two free-running oscillators; (3) four signals data are received from just on beam; (4) phase shifts detected quadrature. Calibration tests demonstrate that measures with an uncertainty approximately 5°. Plasma densities corresponding up 5π routinely and successfully measured.
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