Diagnostic development for energetic electron measurements on the Facility for Laboratory Reconnection Experiment

The Facility for Laboratory Reconnection Experiment (FLARE) will have capabilities to access reconnection regimes with multiple X-lines after the current power system upgrade. FLARE can provide unique opportunities to study energetic particle generation during magnetic reconnection in astrophysically-relevant plasmas, since regimes with multiple X-lines require a large Lunquist number and normalized system size. Here we review previous laboratory and space measurements of energetic particles. Then, we discuss possible diagnostics for energetic electron measurements on FLARE, which include a Thomson scattering system with a notch filter, soft X-ray tomography, whistler wave absorption diagnostic, and electron energy analyzer. We also discuss how we use these diagnostics to determine dominant acceleration mechanisms during reconnection.