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arXiv · 2608.21216

Development of A Novel Compton Camera for MeV Gamma-Ray Measurement in Space

Pingwei Sun·Wenxiang Fang·Guorong He·Zhen Wu·Jinghe Yang·Jiancheng Zeng·Yiyu Pan·Jiacheng Ding·Enzhao Qi·Jiahao Su·Haoran Yang·Bowen Zhu·Mengjiao Xiao
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Abstract

The astrophysical gamma rays in the MeV energy region have not yet been well-explored due to the limitation of detection technology in the past decades, and the famous gamma-ray "MeV gap" exists. Opening the window of MeV gamma-ray is not only critical for the gamma astronomy but also essential for rich frontier researches in astro-particle physics, such as detecting light dark matter, probing the primordial black hole and better understanding of nucleosynthesis. As a pilot experiment of the project for dark matter detection in space at Shanghai Jiao Tong University, a three-layer Compton camera with the energy resolution better than 4% and position resolution of ~2 mm is developed utilizing the novel scintillators. Here we show the design, detailed calibration and validation results of the novel Compton camera, and demonstrate its good ability of MeV gamma-ray source imaging for the upcoming in-orbit mission.

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Pingwei Sun, Wenxiang Fang, Guorong He, Zhen Wu, Jinghe Yang, Jiancheng Zeng, Yiyu Pan, Jiacheng Ding, Enzhao Qi, Jiahao Su, Haoran Yang, Bowen Zhu, Mengjiao Xiao. 2026-08-28. Development of A Novel Compton Camera for MeV Gamma-Ray Measurement in Space. https://arxiv.org/abs/2608.21216

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