"Cyclotron Radiation Emission Spectroscopy (CRES) is a modern technique for high-precision beta spectroscopy in which the energy of an e± in an external magnetic field is measured via the frequency of the emitted cyclotron radiation. The He6-CRES experiment aims to use CRES for a potential discovery of new physics by searching for deviations of the beta-decay spectra of 6He and 19Ne from the standard model expectations.
Following a proof-of-principle demonstration of CRES for MeV-scale betas, the He6-CRES collaboration has been steadily optimizing the apparatus to reach higher event rates, improving efficiencies in radioactive gas transport, data acquisition, and low-power/short-duration signal detection. As a result, the experiment is increasingly subject to event pileup, in which multiple simultaneous events can produce data consistent with multiple possible event reconstruction hypotheses, degrading the reliability of the reconstruction. In this talk, I will discuss previous and ongoing detector and analysis design strategies for pileup mitigation, projecting out to the near future given ongoing efforts to increase the event rate."