Speaker
Description
We present the design concept for the Project 8 Low Frequency Apparatus. The Project 8 Collaboration is planning to make a neutrino mass measurement using the tritium endpoint method with a sensitivity of 40 meV. The Project 8 experiment is designed around the use of Cyclotron Radiation Emission Spectroscopy (CRES). The experiment is divided into four phases, with Phases I and II already complete. In Phase I we demonstrated that the CRES technique can precisely measure beta electron energies and in Phase II we performed the first tritium endpoint measurement with CRES. Phase III will demonstrate the necessary experimental scaling required to achieve the final sensitivity in Phase IV. Phase III will include the first use of a resonant cavity to measure CRES signals. As part of Phase III, the Low Frequency Apparatus (LFA) will show that the experiment can be scaled up in size to accommodate the necessary source volume and lower magnetic field strength to enable the magnetic trapping of an atomic tritium source. The apparatus will be compatible with the use of atomic tritium, incorporating a Ioffe magnet system for trapping the atoms. We will present the current design for the LFA, including the cavity, cryogen, magnet, and other subsystems, as well as analysis projections and sensitivity estimates.