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Dark Matter Particle Explorer (DAMPE) is a Chinese scientific satellitedesigned for cosmic ray study with a primary scientific goal of indirect searchof dark matter particles. As a crucial sub-detector, BGO calorimeter measuresthe energy spectrum of cosmic rays in the energy range from 5 GeV to 10 TeV. Inorder to implement high-density front-end electronics (FEE) with the ability tomeasure 1848 signals from 616 photomultiplier tubes on the strictly constrainedsatellite platform, two kinds of 32-channel front-end ASICs, VA160 and VATA160,are customized. However, a space mission period of more than 3 years makessingle event effect (SEE) a probable threat to reliability. In order toevaluate the SEE sensitivity of the chips and verify the effectiveness ofmitigation methods, a series of laser-induced and heavy ion-induced SEE testswere performed. Benefiting from the single event latch-up (SEL) protectioncircuit for power supply, the triple module redundancy (TMR) technology for theconfiguration registers and optimized sequential design for data acquisitionprocess, VA160 and VATA160 with the quantity of 54 and 32 respectively havebeen applied in the flight model of BGO calorimeter with radiation hardnessassurance.

Single Event Effect Hardness for the Front-end ASICs Applied in BGO Calorimeter of DAMPE Satellite