Data acquisition and trigger system for imaging atmospheric Cherenkov telescopes of the LHAASO

Abstract

The Wide Field of View Cherenkov Telescope Array is an important part of the Large High Altitude Air Shower Observatory. The array adopts atmospheric Cherenkov imaging technology. The data acquisition and trigger system is central to each telescope's electronics readout system. To acquire as many Cherenkov events as possible, the system uses a two-level trigger design and partial readout technology. A telescope uses silicon photomultiplier tubes as the detector, whose status (e.g., in terms of the temperature and voltage) is monitored by the system. The instruction protocol of the system is presented.