Lithium plasma facing
components possess several traits that make them desirable
for use in fusion relevant plasmas. The recent focus of CDX-U research has
been the investigation of the effects on plasma performance due to liquid
lithium limiters and thin lithium coatings. Energy confinement times derived
from plasma equilibrium reconstructions in the presence of clean lithium surfaces
indicate an improvement in plasma performance over that expected by energy
confinement time scalings based on earlier tokamak results and previous CDX-U
energy confinement time measurement where lithium surfaces were not present.
As part of the effort to create equilibrium reconstructions in CDX-U, a novel
calibration technique for magnetic field sensors involving eddy current response
function analysis was implemented for the first time. This talk hopes to provide
an accessible overview of the principles of fusion energy, with an emphasis
on energy confinement time as a measure of performance. The talk will then
describe the effort to measure energy confinement times on the CDX-U device.