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arXiv 1507.07296astro-ph.IMastro-ph.HEhep-ex
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粒子级联的磁感应无线电发射的加速器测量及其在cosmic-ray空气簇射中的应用

Accelerator measurements of magnetically-induced radio emission from particle cascades with applications to cosmic-ray air showers

K. Belov, K. Mulrey, A. Romero-Wolf, S. A. Wissel, A. Zilles, K. Bechtol, K. Borch, P. Chen, J. Clem, P. W. Gorham, C. Hast, T. Huege, R. Hyneman, K. Jobe, K. K… 展开作者

K. Belov, K. Mulrey, A. Romero-Wolf, S. A. Wissel, A. Zilles, K. Bechtol, K. Borch, P. Chen, J. Clem, P. W. Gorham, C. Hast, T. Huege, R. Hyneman, K. Jobe, K. Kuwatani, J. Lam, T. Liu, J. Nam, C. Naudet, R. Nichol, B. F. Rauch, B. Rotter, D. Saltzberg, H. Schoorlemmer, D. Seckel, B. Strutt, A. G. Vieregg, C. Williams

摘要:

五十年来,宇宙射线空气簇射一直通过其无线电发射被探测到。我们提出了第一个实验室测量,验证空气淋浴建模中使用的电动力学模拟。SLAC的一项实验提供了在存在磁场的情况下来自带电粒子级联的射频辐射的束测试,这是宇宙射线空气簇射的模型系统。该实验提供了一套受控的实验室测量,以与超高能宇宙射线空气簇射探测所依赖的RF发射的粒子级模拟进行比较。我们比较模拟数据的强度,线性与磁场,角分布,偏振,和光谱内容。特别是,我们证实了现代的预测,在电介质中的磁致发射形成一个圆锥体,峰值在切伦科夫角,并表明模拟再现系统的不确定性内的数据。

英文摘要:

For fifty years, cosmic-ray air showers have been detected by their radio emission. We present the first laboratory measurements that validate electrodynamics simulations used in air shower modeling. An experiment at SLAC provides a beam test of radio-frequency (RF) radiation from charged particle cascades in the presence of a magnetic field, a model system of a cosmic-ray air shower. This experiment provides a suite of controlled laboratory measurements to compare to particle-level simulations of RF emission, which are relied upon in ultra-high-energy cosmic-ray air shower detection. We compare simulations to data for intensity, linearity with magnetic field, angular distribution, polarization, and spectral content. In particular, we confirm modern predictions that the magnetically induced emission in a dielectric forms a cone that peaks at the Cherenkov angle and show that the simulations reproduce the data within systematic uncertainties.

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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