Efficiency and timing performance of the MuPix7 high-voltage monolithic active pixel sensor

The MuPix7 is a prototype high voltage monolithic active pixel sensor with 103×80μm2 pixels thinned to 64  μm and incorporating the complete read-out circuitry including a 1.25  Gbit/s differential data link. Using data taken at the DESY electron test beam, we demonstrate an efficiency of 99.3  % and a time resolution of 14  ns. The efficiency and time resolution are studied with sub-pixel resolution and reproduced in simulations.