Multichannel Tangential FIR Laser
Interferometer/Polarimeter for NSTX (FIReTIP)
Far-infrared (FIR) lasers are
widely utilized for interferometric/polarimetric measurements of plasma electron density
profiles and parallel magnetic field profiles in contemporary magnetic fusion
devices. UC Davis, in collaboration with PPPL, is refurbishing the Tangential
Interferometer/Polarimeter (FIReTIP) for The National Spherical Torus Experiment (NSTX) in the
Princeton Plasma Physics Laboratory (PPPL).
A triple FIR laser configuration has been
adopted for the system.
The objectives of this
To provide temporally and radially resolved
electron density profile data for transport and equilibrium studies in NSTX.
To provide temporally and radially resolved toroidal field profile data for the study of paramagnetism and diamagnetism in NSTX.
To measure the plasma density fluctuations due
to coherent waves (RF products, MHD modes such as TAE, etc.) and incoherent
waves (turbulence) in NSTX.
Further information is
available via the links below:
Current Status and Projected Progress
The CO2/FIR Lasers for the
Electronics for the FIReTIP System
Recent Progress and
of Anticipated Performance (reference only)
Optical Layouts of
the old FIReTIP System (reference
Copyright 2012, The Millimeter-Wave Technology Group of the
University of California at Davis
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