Requirements for the final phase of Project 8*

Project 8 is an atomic tritium-based experiment to directly measure the mass of the electron anti-neutrino via cyclotron radiation emission spectroscopy. We have adopted a four-phase approach to the measurement, with the final phase having a sensitivity goal of 40 meV. This sensitivity will allow us to either make a positive measurement of the mass or distinguish between normal and inverted neutrino mass ordering. In this presentation we will lay out the broad requirements to meet the scientific goals of Phase IV. We will also provide some details on our efforts to demonstrate key technologies, including the production / cooling / purification of atomic tritium, the design and testing of a magnetic trap for the atoms, methods to observe the femtowatt-scale cyclotron radiation, quantum-limited low-noise amplifiers, and data reduction.