利用电子-正电子对转换的gamma-ray望远镜：事件发生器、角分辨率和偏振测量
gamma-ray telescopes using conversions to electron-positron pairs: event generators, angular resolution and polarimetry
摘要：
我们基准测试各种可用的事件发生器在Geant 4和EGS 5在高角分辨率对转换望远镜正在进行的项目。我们比较了从三个末态粒子的几何形状中提取的关键运动学变量的分布。我们验证和使用作为参考的一个确切的发电机，使用全5D差分截面的转换过程。我们特别关注不可测反冲核对角分辨率的影响。我们表明，对于高分辨率的跟踪器，发电机的选择会影响估计的分辨率的望远镜。我们还表明，目前可用的发生器无法准确地描述一个线性偏振光子源。
英文摘要：
We benchmark various available event generators in Geant4 and EGS5 in the light of ongoing projects for high angular-resolution pair-conversion telescopes. We compare the distributions of key kinematic variables extracted from the geometry of the three final state particles. We validate and use as reference an exact generator using the full 5D differential cross-section of the conversion process. We focus in particular on the effect of the unmeasured recoiling nucleus on the angular resolution. We show that for high resolution trackers, the choice of the generator affects the estimated resolution of the telescope. We also show that the current available generator are unable to describe accurately a linearly polarised photon source.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
