论文标题
使用先前计算的微观模拟从广泛的空气淋浴中的无线电信号合成
Synthesis of radio signals from extensive air showers using previously computed microscopic simulations
论文作者
论文摘要
通过其无线电信号检测广泛的空气淋浴（EAS）正在成为最高能量中中微子和宇宙射线研究的最有希望的技术之一。为了设计，优化和表征无线电阵列及其相关的重建算法，需要数以万计的蒙特卡洛模拟。当前可用的仿真代码可能需要几天才能计算单个淋浴所产生的信号，从而无法以具有成本效益和环境意识的方式以合理的时间进行所需的模拟。在本文中，我们提出了一种在淋浴芯周围的任何点合成预期信号（不仅是峰值振幅）的方法，鉴于在策略上以有限数量的天线模拟了一组信号，该信号位于策略性地位于图案中，该模式利用了无线电波侧的标志性特征。该方法可以在三个极化方向上不明显地应用于电场或对电场的天线响应。合成的信号可用于评估触发条件，计算通风率或重建淋浴传入方向，从而生产一个单个模拟库，这些模拟库可以用于表征和优化无线电阵列及其相关的重建方法的表征和优化。
The detection of extensive air showers (EAS) through their radio signal is becoming one of the most promising techniques for the study of Neutrinos and Cosmic rays at the highest energies. For the design, optimization and characterization of radio arrays, and of their associated reconstruction algorithms, tens of thousands of Monte Carlo simulations are needed. Current available simulation codes can take several days to compute the signals produced by a single shower, making it impossible to produce the required simulations in a reasonable amount of time, in a cost-effective and environmental-conscious way. In this article we present a method to synthesize the expected signals (the full time trace, not just the peak amplitude) at any point around the shower core, given a set of signals simulated in a finite number of antennas strategically located in a pattern that exploits the signature features of the radio wavefront. The method can be applied indistinctly to the electric field or to the antenna response to the electric field, in the three polarization directions. The synthesized signal can be used to evaluate trigger conditions, compute the fluence or reconstruct the shower incoming direction, allowing for the production of one single library of simulations that can be used and re-used for the characterization and optimization of radio arrays and their associated reconstruction methods, for a thousandth part of the otherwise required CPU time.
