High-End Space Electronics: Active Shielding to Mitigate Catastrophic Single-Event Effects

TL;DR

This paper presents a real-time, nonintrusive shielding system that detects radiation particles and power cycles electronics to prevent damage, validated through simulations and space experiments, enhancing space electronics safety.

Contribution

Introduces a novel radiation mitigation system combining particle detection and power cycling, validated with simulations and space data, improving protection of commercial electronics in space.

Findings

Achieves 95% detection accuracy of harmful particles

Power cycling occurs approximately once every seven hours per square centimeter

System effectively protects high-end electronics in space environments

Abstract

Operating electronic systems in space environments presents significant challenges due to continuous exposure to cosmic, solar, and trapped radiation, which can induce catastrophic single-event effects. This paper introduces a novel nonintrusive mitigation apparatus designed to protect high-end commercial off-the-shelf electronics in space. The apparatus incorporates an array of real-time particle detectors coupled with a mitigation algorithm. Upon identifying potentially harmful particles, the system power cycles affected electronics, preempting permanent damage. The apparatus was evaluated using GEANT4 simulations, which were compared with empirical data from the "COTS-Capsule" experiment aboard the International Space Station, demonstrating strong agreement. Key results indicate that the system achieves a 95% detection accuracy with a power cycle rate of once every seven hours per square centimeter of sensitive electronics. The COTS-Capsule represents a cost-effective, flexible solution for integrating modern, high-end, non-space-qualified electronics into a variety of space missions, addressing critical challenges in the new-space era.