Speaker
Description
The Project 8 neutrino mass experiment envisions a multi-phase approach to reach 40meV neutrino mass sensitivity using Cyclotron Radiation Emission Spectroscopy (CRES). The first two phases demonstrated the principle of CRES and produced the first CRES spectrum of the tritium beta-decay endpoint. One of the primary goals of the third phase is to demonstrate sub-eV energy resolution near the tritium endpoint. This high resolution is enabled by a resonant microwave cavity, which enhances the signal-to-noise ratio of the extremely weak CRES signal and allows reconstruction of electron axial motion. The Cavity CRES Apparatus (CCA) is the platform for demonstrating CRES with axial reconstruction in a scalable resonant cavity operating near 26GHz. The CCA is currently undergoing commissioning and early operations. We report on the first CRES measurements in the CCA and progress towards implementing two precision calibration sources: an energy-tunable electron gun and a gaseous 83mKr conversion electron source.