Design of electronics of LEPD principle prototype onboard the CEMES satellite

The Low Energy Particle Detector (LEPD) is one of the main payloads onboard China Electromagnetic Monitoring Experimental Satellite (CEMES). The detector is designed to identify the electrons and protons, to measure the energy spectrum and the incident angle of the particles. LEPD 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 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. In addition, limited current circuit and self-check circuit are also designed to deal with the Single Event Effects (SEE), especially the Single Event Lock (SEL).