用于光核反应实验的复旦大学多用途主动靶时间投影室（fMeta-TPC）
Fudan Multi-purpose Active TArget Time Projection Chamber (fMeta-TPC) for Photonnuclear Reaction Experiments
AI总结：
本文介绍了用于研究光核反应的2048通道fMeta-TPC探测器的设计与离线性能评估，其角分辨率优于0.30°，对3.0 MeV $α$粒子能量分辨率为6.85%，增益均匀性约10%。
摘要：
主动靶时间投影室（AT-TPC）是低能核物理领域的先进工具，特别适用于使用低强度放射性离子束或伽马射线的实验。已开发具有2048个通道的复旦大学多用途主动靶时间投影室（fMeta-TPC），用于研究$α$团簇核。本工作重点研究利用激光康普顿散射（LCS）伽马源进行光核反应，特别是高激发$α$团簇态的衰变。本文描述了fMeta-TPC的设计，并通过紫外（UV）激光和$^{241}$Am $α$源对其离线性能进行了全面评估。结果显示，探测器的本征角分辨率在0.30$^{\circ}$以内，对3.0 MeV $α$粒子的能量分辨率为6.85%。通过$^{55}$Fe X射线源测试，探测器的增益均匀性约为10%（RMS/Mean）。
英文摘要：
Active Target Time Projection Chambers (AT-TPCs) are state-of-the-art tools in the field of low-energy nuclear physics, particularly suitable for experiments using low-intensity radioactive ion beams or gamma rays. The Fudan Multi-purpose Active Target Time Projection Chamber (fMeta-TPC) with 2048 channels has been developed to study $α$-clustering nuclei. {\fcb In this work, the focus is on the study of the photonuclear reaction with the Laser Compton Scattering (LCS) gamma source, especially for the decay of the highly excited $α$-cluster state.} The design of fMeta-TPC is described and a comprehensive evaluation of its offline performance is performed by ultraviolet (UV) laser and $^{241}$Am $α$ source. The result shows that the intrinsic angular resolution of the detector is within 0.30$^{\circ}$ and has an energy resolution of 6.85\% for 3.0 MeV $α$ particles. The gain uniformity of the detector is about 10\% (RMS/Mean), tested by the $^{55}$Fe X-ray source.
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