Abstract:
MeV gamma-ray imaging plays a crucial role in astrophysics, nuclear security, and medical physics; however, existing detector technologies face critical limitations. Mechanical collimators suffer from low detection efficiency and an inherent resolution-sensitivity trade-off, while conventional Compton scattering cameras are hindered by single-measurement ambiguity. Furthermore, electron tracking systems introduce prohibitive hardware bulk and high system complexity. To address these challenges, we propose a novel Hybrid Cherenkov–Scintillation Compton Camera for MeV gamma-ray imaging. This scheme enables high-precision, event-by-event direction reconstruction. Preliminary simulation results indicate that the proposed configuration achieves an angular resolution of 1.6°–1.9° and a wide field of view (FOV) of ±83°.
About the speaker:
Qiuping SHEN is a postdoctoral fellow at the IHEP, CAS. He received his PhD in 2024 from Shanghai Jiao Tong University and Université Paris Cité, supported by Chinese Scholarship Council. Since 2019, he has been working on the LHC ATLAS experiment, with research interests including photon identification, diHiggs search. During his PhD, he also worked on detector for the SDHCAL, focusing on precise timing measurements. His recent research interests include rare Higgs decays (HZγ and Hμμ), LIV searches in Hγγ, and the development of novel Compton-based gamma detector concepts for MeV gamma-ray imaging.
https://zoom.us/j/91688039934?pwd=r3bifigbKe0ubabFtjzqbdCBNbaxrk.1
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