A Cavity CRES Apparatus for the Project 8 Neutrino Mass Experiment

Project 8 aims to determine the absolute neutrino mass from the shape of the tritium beta decay spectrum near its endpoint. The collaboration has developed Cyclotron Radiation Emission Spectroscopy (CRES) as a frequency-based technique for measuring electron energies. The next step in the R&D program is a Cavity CRES Apparatus (CCA) to achieve sub-eV energy resolution and lay groundwork for scaling-up the active volume. The CCA will do so using electron-gun calibration, resonant-cavity detection, and optimized magnetic trapping of electrons. This talk will provide an overview of the CCA, now being commissioned at the University of Washington. I will then discuss magnetic field design for the apparatus.