标题： 基于μ子的IACT光学效率标定通用算法 显示英文标题

标题： A Generic Algorithm for IACT Optical Efficiency Calibration using Muons

摘要： 在广延大气簇射（EAS）中产生的μ子在成像大气切伦科夫望远镜中沿接近平行于光学轴的方向行进时会产生环状图像。通过这些图像的几何参数，可以解析地计算出发射的光量。将这些图像记录的光量与预期值进行比较是一种成熟的望远镜光学效率校准技术。然而，这种计算通常是在假设望远镜反射镜近似为圆形的基础上进行的。H.E.S.S. 实验于2012年进入第二阶段，新增了一台具有非圆形600米$^2$反射镜的第五台望远镜。由于这台望远镜的反射镜形状与最初的四台H.E.S.S.望远镜不同，需要对标准μ子校准方法进行调整。我们提出了一种通用的μ子校准程序，适用于不同形状和大小的望远镜，并在H.E.S.S. II阵列上展示了其性能。 显示英文摘要

摘要： Muons produced in Extensive Air Showers (EAS) generate ring-like images in Imaging Atmospheric Cherenkov Telescopes when travelling near parallel to the optical axis. From geometrical parameters of these images, the absolute amount of light emitted may be calculated analytically. Comparing the amount of light recorded in these images to expectation is a well established technique for telescope optical efficiency calibration. However, this calculation is usually performed under the assumption of an approximately circular telescope mirror. The H.E.S.S. experiment entered its second phase in 2012, with the addition of a fifth telescope with a non-circular 600m$^2$ mirror. Due to the differing mirror shape of this telescope to the original four H.E.S.S. telescopes, adaptations to the standard muon calibration were required. We present a generalised muon calibration procedure, adaptable to telescopes of differing shapes and sizes, and demonstrate its performance on the H.E.S.S. II array.