Particle Physics Seminar
Silicon Detector R&D for the CSES missions and beyond
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Europe/Berlin
Käthe-Kümmel-Str. 1/U1.059 (ROT) - Conference Room (ROT)
Description
Abstract:
The China Seismo-Electromagnetic Satellite (CSES) missions represent the forefront of space-based efforts to study the coupling between the ionosphere and lithosphere. Equipped with a diverse array of instruments, these missions can detect a broad range of perturbations in the ionosphere and magnetosphere, including transient electromagnetic emissions (e.g., from lightning) and long-duration particle injections resulting from space weather events. The first satellite was launched in August 2018, and in this presentation, I will highlight some of the key scientific findings obtained so far.
One of the principal instruments aboard CSES is the High-Energy Particle Detector (HEPD), which monitors electrons and protons with energy thresholds of 3 MeV and 30 MeV, respectively. The Limadou collaboration has developed an improved version of the HEPD for the second satellite in the CSES constellation, launched in June 2025. A significant upgrade is the use of Monolithic Active Pixel Sensors (MAPS) for the tracker, a technology never previously used in space. Compared to conventional hybrid silicon microstrip technology, MAPS offer improved precision, robustness, easier control and readout, reduced costs, and less invasiveness. However, MAPS still face challenges, such as small size and higher power consumption. The HEPD-02 tracker will consist of 150 ALPIDE sensors, with a custom-designed operation mode and readout system tailored for space applications. The flight model of HEPD-02 underwent extensive test-beam campaigns in 2023, and I will present the first performance results from these tests.
Join Zoom Meeting
https://uni-bonn.zoom-x.de/j/66253567797?pwd=R2MrNmNCQnl4K1hSejd6VnBEYXJ2QT09
Meeting ID: 662 5356 7797
Passcode: 599591
Organised by
Saime Gürbüz, Kristof Schmieden