AMIGA、俄歇μ子和地面阵列填充
AMIGA, Auger Muons and Infill for the Ground Array
摘要：
计划对皮埃尔·俄歇天文台进行升级，以便能够研究低至0.1 EeV的宇宙射线的能谱，并能够确定簇射的μ子成分。前者将导致通过一种技术测量的光谱从0.1EeV到超过100EeV，而后者将有助于识别初级粒子。这些改进包括三个高仰角望远镜（HEAT）和一个既有地面探测器又有地下μ介子计数器（AMIGA）的填充区。俄歇天文台的表面阵列将在23.5平方公里的面积上得到加强，85个探测器对被布置为水切伦科夫探测器和30平方米掩埋μ子闪烁计数器的分级阵列。阵列中的间距将为433和750米。μ介子探测器将包括高度分段的反射器，光纤末端是多阳极光电管。AMIGA综合体的中心距Coihueco的荧光探测器装置6.0公里，将由HEAT望远镜俯瞰。我们描述的AMIGA增强的设计特点。
英文摘要：
The Pierre Auger Observatory is planned to be upgraded so that the energy spectrum of cosmic rays can be studied down to 0.1 EeV and the muon component of showers can be determined. The former will lead to a spectrum measured by one technique from 0.1 EeV to beyond 100 EeV while the latter will aid identification of the primary particles. These enhancements consist of three high elevation telescopes (HEAT) and an infilled area having both surface detectors and underground muon counters (AMIGA). The surface array of the Auger Observatory will be enhanced over a 23.5 km2 area by 85 detector pairs laid out as a graded array of water-Cherenkov detectors and 30 m2 buried muon scintillator counters. The spacings in the array will be 433 and 750 m. The muon detectors will comprise highly segmented scintillators with optical fibres ending on multi-anode phototubes. The AMIGA complex will be centred 6.0 km away from the fluorescence detector installation at Coihueco and will be overlooked by the HEAT telescopes. We describe the design features of the AMIGA enhancement.
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