Speaker
Description
The Probe of Extreme Multi-Messenger Astrophysics (POEMMA) mission plans to use two orbiting Schmidt telescopes to stereoscopically measure the air fluorescence signal from extensive air showers (EASs) from ultra-high energy cosmic rays (UHECRs), above 20 EeV, as well as the Cherenkov signal from upward-moving EASs induced from tau neutrino interactions in the Earth. Each POEMMA focal plane is designed for both fluorescence and Cherenkov detection, with the later optimized by the use of SiPMs to provide neutrino sensitivity above 20 PeV. In this talk, the properties of the Cherenkov EAS signal in the context of wide wavelength range offered by SiPMs will be discussed as well as the implementation for POEMMA. A comparison of the fluorescence response between SiPMs and the MAPMTs currently planned for POEMMA will also be discussed.
