Design of HEPD onboard the CSES satellite

The High Energy Particle Detector (HEPD) is one of the main payloads onboard China Seismo-Electromagnetic Satellite (CSES). The detector is designed to identify the electrons and protons, to measure the energy spectrum and the incident angle of the particles. HEPP is made up of a silicon tracker, a CsI (TI) mini-calorimeter, an anticoincidence system made by plastic scintillator, as well as electronics and data acquisition system (DAQ). The front-end electronics with ASIC are designed individually to process their output signals, such as two Double-sided Silicon Strip Detectors (DSSD), CsI (TI) mini-calorimeter and plastic scintillator. The DAQ is a very important part of the electronics, which used to select effective case and keep the scientific data in an appropriate size.