Towards Interferometric Triggering on Air Showers Induced by Tau Neutrino Interactions
Towards Interferometric Triggering on Air Showers Induced by Tau Neutrino Interactions
复制标题
Tau 中微子相互作用引起的空气簇射的干涉触发
DOI：
10.22323/1.358.0917
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
E. Zas
中科院分区：
文献类型：
--
作者：
K. Hughes;J. Alvarez;W. Carvalho;W. Carvalho;A. Cummings;C. Deaconu;G. Hallinan;A. Ludwig;E. Oberla;C. Paciaroni;A. Rodriguez;A. Romero;H. Schoorlemmer;D. Southall;B. Strutt;Mercedes Vasquez;A. Vieregg;S. Wissel;E. Zas
宇宙中微子波束形成高架阵列（BEACON）实验旨在实施一种新的干涉仪触发器，目标是由能量大于100 PeV的地球中微子相互作用期间产生的τ轻子衰变引发的空气簇射。在过去的十年中，干涉技术已成功地实施了许多领先的UHE粒子实验的分析。BEACON包括触发级的干涉测量，通过实施一种波束形成技术，其中信号被相干地相加，提高了总体灵敏度，并提供了对人造背景的鲁棒抑制。在加州毕晓普附近的白色山上安装了一个双天线短期干涉仪和一个四天线长期干涉仪，都是针对30-80 MHz范围的，这是为期数月的人造背景和速率现场研究的一部分。成功地抑制人造背景将导致BEACON的未来迭代，以触发来自上方的宇宙射线和来自视界附近的τ中微子相互作用的τ轻子空气簇射。
The Beamforming Elevated Array for COsmic Neutrinos (BEACON) Experiment aims to implement a new interferometric trigger targeting air showers initiated by the decay of tau leptons created during neutrino interactions in the earth at energies greater than 100 PeV. Over the past decade, interferometric techniques have been successfully implemented in analysis for many of the leading UHE particle experiments. BEACON has included interferometry at the trigger level, by implementing a beamforming technique in which signals are coherently summed, improving overall sensitivity and providing robust rejection against man-made backgrounds. A two-antenna short-term interferometer and a four-antenna long-term interferometer, both targeting the 30-80 MHz range, were installed on White Mountain near Bishop, California, as part of a months-long site study of man-made backgrounds and rates. Successfully suppressing man-made backgrounds will lead future iterations of BEACON to trigger on both cosmic rays from above and tau lepton air showers from tau neutrino interactions near the horizon.