广延空气簇射的剖析：构建最优的辐射计算方法
Anatomy of an extensive air shower: building an optimal radio emission calculation
AI总结：
针对超高能天体粒子物理中广延空气簇射射电辐射计算耗时的问题，本文提出CREPES算法，实现了速度超三个数量级的快速计算，同时保持了计算精度。
AI中文摘要：
粒子空气簇射产生的射电辐射是超高能天体粒子物理中实现大曝光量实验最具潜力的探测技术之一。在能量高于10^17 eV的能区，对蒙特卡洛粒子簇射产生的射电辐射进行详细计算所需的CPU资源十分庞大，使得统计研究和优化问题在很大程度上难以开展。本文研究了广延空气簇射的纵向和横向发展特性，并利用这些特性实现了对相关射电辐射的快速评估。我们提出了簇射中正负电子相干射电辐射算法（CREPES），该算法会预先计算一次粒子分布，后续可基于该分布获取辐射结果，在保持微观计算精度的同时，速度提升了三个数量级以上。
英文摘要：
Radio emission from particle air showers is one of the most promising detection techniques to achieve an experiment with a large exposure in ultra-high-energy astroparticle physics. In this regime, above $10^{17}$ eV, the detailed calculation of the radio emission from Monte Carlo particle showers is sufficiently CPU intensive that statistical studies and optimization problems remain largely out of reach. In this article we examine the characteristics of the longitudinal and lateral development of extensive air showers, and exploit them to obtain a fast evaluation of the associated radio emission. We introduce the Coherent Radio Emission from Positrons and Electrons in Showers (CREPES) algorithm, in which the particle distributions are precomputed once and the emission is subsequently obtained from them, yielding a gain in speed of more than three orders of magnitude while preserving the accuracy of the microscopic calculation.
