AI 中文总结
该研究针对MeV伽马射线探测的技术瓶颈，研发了一款能量分辨率优于4%、位置分辨率约2mm的三层康普顿相机，为空间MeV伽马射线成像及相关天体物理研究提供了关键设备支持。
AI 中文摘要
过去数十年间，受探测技术限制，MeV能区的天体物理伽马射线尚未得到充分探索，存在著名的伽马射线“MeV间隙”。开启MeV伽马射线窗口对伽马天文学至关重要，也是丰富天体粒子物理前沿研究的基础，例如探测轻暗物质、原初黑洞，以及更好地理解核合成。研究人员利用新型闪烁体，研发了一款三层康普顿相机，其能量分辨率优于4%，位置分辨率约为2mm。本文展示了该新型康普顿相机的设计、详细校准与验证结果，并证明其具备良好的MeV伽马射线源成像能力，可用于即将开展的在轨任务。
英文摘要
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.
Comments20 pages, 10 figures
