Magnetic Diagnostics Suite Upgrade on LTX-$\beta$

LTX-$\beta$ will be exploring a new regime of flat temperature-profile tokamak plasmas first demonstrated in LTX [D.P. Boyle \emph{et al. PRL} July 2017]. The incorporation of neutral beam core-fueling and heating in LTX-$\beta$ is expected to increase plasma beta and drive increased MHD activity. An upgrade of the magnetic diagnostics is underway, including an expansion of the reentrant 3-axis poloidal Mirnov array, as well as the addition of a toroidal array of poloidal Mirnov sensors and a set of 2-axis Mirnov sensors measuring fields from shell eddy currents. The poloidal and toroidal arrays will facilitate the study of MHD mode activity and other non-axisymmetric perturbations, while the new shell eddy sensors and improvements to existing axisymmetric measurements will support enhanced equilibrium reconstructions using the PSI-Tri equilibrium code [C. Hansen \emph{et al. PoP} Apr. 2017] to better characterize these novel hot-edge discharges.