Bulletin of the American Physical Society
63rd Annual Meeting of the APS Division of Plasma Physics
Volume 66, Number 13
Monday–Friday, November 8–12, 2021; Pittsburgh, PA
Session TP11: Poster Session VII:
Fundamental Plasma Physics - Waves, Instabilities, and Shocks; Turbulence and Transport Phenomena; Single-Component Plasmas
MFE- High Field & Long Pulse Tokamaks: Pinch, Mirrors, Spheromak, and Other Magnetic Relaxation
9:30 AM - 12:30 PM
Thursday, November 11, 2021
Room: Hall A
Abstract: TP11.00089 : Planned diagnostic suite of the MTF Fusion Demonstration Plant
Presenter:
Curtis Gutjahr
(General Fusion)
Authors:
Stephen J Howard
(General Fusion)
Curtis Gutjahr
(General Fusion)
Reto Corfu
(General Fusion)
Patrick Carle
(General Fusion)
Sandra Barski
(General Fusion)
Myles Hildebrand
(General Fusion)
William Young
(General Fusion)
Akbar Rohollahi
(General Fusion)
Joshua Hawke
(General Fusion)
Ryan Zindler
(General Fusion)
Daymon Krotez
(General Fusion)
Filiberto Braglia
(General Fusion)
Matt Herunter
(General Fusion)
Alex Mossman
(General Fusion)
The compression system consists of a cylindrical wall of rotating liquid Li that is driven inward by an array of pistons in a way that creates concavity to the inner surface as it compresses the enclosed plasma to a volume ~1000x smaller. Diagnostic access during compression becomes difficult as view ports are occluded and the plasma inhabits a smaller space. Magnetic pressure during late stages of plasma compression is on the order of a gigapascal and thus limits the options for diagnostic placement.
Diagnostics to constrain the plasma equilibrium include Mirnov coils, Faraday rotation polarimetery, Thomson scattering LIDAR, and interferometry. Temperature will be measured with ion Doppler, neutron Doppler, TS LIDAR, and bremsstrahlung from x-ray photodiode ratios. Neutron yield will be measured with scintillators and activation counting materials. Radiated power will be measured with bolometery. Elemental composition will be determined using optical and x-ray survey spectrometry.
The surface trajectory and shape of the liquid metal liner will also be measured optically in order to constrain the plasma boundary and understand plasma-wall interactions.
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