Development of the Cherenkov Telescope for EUSO-SPB2

Ultrahigh-energy (UHE, >10 PeV) neutrinos provide crucial information to understand cosmic particle accelerators and neutrino physics at the highest energies. We are developing an imaging air-shower Cherenkov Telescope to detect Earth-skimming UHE neutrinos and measure Cherenkov signals from above the limb cosmic rays with around a PeV threshold energy. The telescope has a 0.785 m^2 light collection area and a 512-pixel SiPM camera covering a 12.8° x 6.4° (Horizontal x Vertical) field-of-view with 0.4° resolution. The camera signals are sampled with 100 MS/s and digitized with 12-bit resolution. The telescope will fly in 2023 as part of the Extreme Universe Space Observatory Super Pressure Balloon 2 (EUSO-SPB2), which is a benefit of future space-based missions. The objectives of the flight include: studying sources of background events, validating the performance of the instrument, searching for Earth-skimming tau neutrinos, observing air showers from cosmic rays above the Earth's limb. I present the status of the telescope and results from bench testing the system.