Cosmic ray test for a compact Cherenkov T0 detector

A compact T0 detector with high time resolution is developed. The T0 detector is based on a multi-anode MCP-PMT coupled with two fused quartzes. The characteristics of this MCP-PMT are studied by a fast laser pulse in laboratory firstly. Cosmic ray test has been carried out to study T0 detector’s signal features and time resolution. The T0 detector’s time resolution is less than 40 ps for the cosmic ray events. It can be applicable in cosmic ray test, beam test, collider experiment and detector developments.