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Plasma Physics (Physics/ECE/NE 922) Seminars

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Events During the Week of October 20th through October 27th, 2024

Monday, October 21st, 2024

Thermonuclear Fusion in a Stabilized Z Pinch and Integration into a Technology Demonstrator
Time: 12:05 pm - 1:00 pm
Place: 1610 Engineering Hall
Speaker: Prof. Uri Shumlak, University of Washington-Seattle and ZAP Energy
Abstract: Many confinement configurations use large magnetic field coils to stabilize plasma, resulting in lower plasma beta – a measure of confinement efficiency defined as the ratio of plasma pressure to magnetic pressure. In contrast, the Z pinch achieves an ideal unity beta without the need for magnetic field coils. An axial plasma current generates the confining magnetic field, which balances the radial plasma pressure gradient. Increasing this current compresses the plasma adiabatically, raising its density and temperature. Despite its potential, the Z pinch is prone to MHD instabilities that destroy confinement. The sheared-flow-stabilized (SFS) Z pinch mitigates these instabilities using axial flows and has shown the ability to confine plasma at fusion conditions without magnetic field coils, promising a more compact fusion device. This presentation will discuss experimental results from the FuZE (Fusion Z-pinch Experiment) device, demonstrating high-performance plasmas and sustained fusion reactions. Neutron energy measurements indicate a thermonuclear fusion process, with reaction rates consistent with adiabatic compression scaling. High-fidelity numerical simulations suggest that sheared-flow stabilization remains effective at reactor-grade plasma conditions. Additionally, scaling studies show the potential of the SFS Z pinch as a high-gain fusion energy source. Finally, we will present an integrated reactor technology demonstrator combining key subsystems including Z-pinch plasma confinement, liquid metal electrodes, and repetitive operation, highlighting its viability as a carbon-free terrestrial power source.
Host: John Sarff
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Tuesday, October 22nd, 2024

No events scheduled

Wednesday, October 23rd, 2024

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Thursday, October 24th, 2024

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Friday, October 25th, 2024

No events scheduled