July 1, 2025Open Access

The novel direction detector on board of the second China Seismo-Electromagnetic Satellite.

USUmberto SavinoLawrence Berkeley National Laboratory

Key Points

The MAPS technology leads to enhanced detection efficiency, improving space monitoring capabilities.
Key evidence indicates increased spatial resolution and reduced material budget while utilizing MAPS.
This analysis focuses on the MAPS-based tracker integrated into the second generation high-energy particle detector.
The findings highlight the potential for MAPS technology to revolutionize particle detection in future space programs.

Abstract

Abstract Charged particle trackers are fundamental in space applications for monitoring the radiation environment, ensuring astronaut safety, and studying cosmic rays. They aid in space weather prediction, planetary exploration, and advancing astrophysical research. Silicon based detectors, like microstrips, are the most widespread technology for tracking, however, Monolithic Active Pixel Sensor (MAPS) can open a new era of tracker for space detectors devoted to higher spatial resolution, reduced material budget and impressive detection efficiency. The China Seismo-Electromagnetic Satellite (CSES), a scientific space program of the China National Space Administration and the Italian Space Agency that aims to deepen the comprehension of the time correlation between the main earthquake shocks and an increase in the electron flux in the inner Van Allen belt, is the fist experiment that hosts MAPS technology on board of a satellite. The present work is focused on the realization and validation of the MAPS-based tracker on board of the second generation High-Energy Particle Detector (HEPD-02), developed by Limadou Italian collaboration

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