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arXiv 1802.08253hep-phastro-ph.IMphysics.data-anphysics.ins-det
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用于$γ\to e^+e^-$转换的5D偏振Bethe-Heitler事件generator

A 5D, polarised, Bethe-Heitler event generator for $γ\to e^+e^-$ conversion

Denis Bernard

摘要:

我们描述了一个新版本的5D,精确的,极化的,贝特-海特勒事件发生器的$γ$ -射线转换到$e^+e^-$,在HARPO项目的背景下开发的,这是能够模拟连续的事件与不同的光子能量和不同的原子目标,没有任何实质性的CPU开销。通过在适当的洛伦兹坐标系中执行转换的每一步来减轻五维微分截面的发散中的运动学变量之间的强相关性。我们将验证范围扩展到阈值以上1 keV,最高可达1 EeV。这项工作可以为精确模拟后费米-LAT区域的高性能$γ$射线望远镜和偏振计铺平道路。

英文摘要:

We describe a new version of the 5D, exact, polarised, Bethe-Heitler event generator of $γ$-ray conversions to $e^+e^-$, developed in the context of the HARPO project, that is able to simulate successive events with different photon energies and on different atomic targets without any substantial CPU overhead. The strong correlation between kinematic variables in the divergence of the five-dimensional differential cross section are mitigated by performing each step of the conversion in the appropriate Lorentz frame. We extend the verification range down to 1 keV above threshold and up to 1 EeV. This work could pave the way to the precise simulation of the high-performance $γ$-ray telescopes and polarimeters of the post-Fermi-LAT area.

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。

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