  The Project 8 experiment aims to measure the neutrino mass using tritium beta
decays. Beta-decay electron energies will be measured with a novel technique:
as the electrons travel in a uniform magnetic field their cyclotron radiation
will be detected. The frequency of each electron's cyclotron radiation is
inversely proportional to its total relativistic energy; therefore, by
observing the cyclotron radiation we can make a precise measurement of the
electron energies. The advantages of this technique include scalability,
excellent energy resolution, and low backgrounds. The collaboration is using a
prototype experiment to study the feasibility of the technique with a
$^{83m}$Kr source. Demonstrating the ability to see the 17.8 keV and 30.2 keV
conversion electrons from $^{83m}$Kr will show that it may be possible to
measure tritium beta-decay electron energies ($Q \approx 18.6$ keV) with their
cyclotron radiation. Progress on the prototype, analysis and signal-extraction
techniques, and an estimate of the potential future of the experiment will be
discussed.
