Jacqueline Catalano Erlangen

A trigger ASIC (T5TEA) for the Cherenkov Telescope Array(pdf)

High energy astrophysics became increasingly more advanced since its discovery by Viktor Hess in 1912. Very high energetic gamma-ray radiation is produced by cosmic rays arising from a number of different sources in the universe. Examples for such sources are AGN or supernova remnants. For detecting VHE gamma rays, large detectors are required due to the fact that their flux is very low. The future Cherenkov Telescope Array will cover such a big area ($\sim 4\,$km$^2$) and is expected to be sensitive to $\gamma$-rays in the range between 10 GeV and 300 TeV. Gamma rays produce an air shower in the atmosphere whose particles emit short flashes of Cherenkov light. Therefore, fast cameras with special read-out electronics need to be developed to fulfill the scientific goals of CTA. In this talk the trigger ASIC T5TEA will be presented which is able to trigger at very low thresholds of a few single photoelectrons. T5TEA is one of the proposed systems to be implemented in the cameras of CTA.