Project 8: Using Radio Frequencies to Measure the Neutrino Mass

TL;DR

Project 8 aims to measure neutrino mass by detecting beta-decay electrons through radio-frequency signals generated by their cyclotron motion, offering a novel approach to observe spectral distortions.

Contribution

It introduces a new radio-frequency detection method for measuring beta-decay electron energies to determine neutrino mass.

Findings

Prototype demonstrates single-electron detection near 18.6 keV

Potential for scaling up to a neutrino-mass measurement experiment

Radio-frequency technique offers a novel approach for neutrino mass measurement

Abstract

It is well known that the neutrino masses affect the shape of the energy spectrum of tritium beta-decay electrons. However, experiments have yet to measure that distortion. The Project 8 experiment proposes to measure the spectral distortion in a novel way: using radio-frequency techniques to detect and measure the energies of the beta-decay electrons. We plan on measuring the radiation created from the cyclotron motion of the electrons in a strong magnetic field. I will report on the status of a prototype that is designed to demonstrate single-electron detection at energies near the tritium endpoint, 18.6 keV. I will also discuss the possibilities for scaling up to a neutrino-mass experiment.