Auger@TA: Deploying an independent Pierre Auger Observatory SD micro-array at the Telescope Array Project: Auger@TA Working Group Report
Auger@TA: Deploying an independent Pierre Auger Observatory SD micro-array at the Telescope Array Project: Auger@TA Working Group Report
复制标题
Auger@TA：在望远镜阵列项目中部署独立的皮埃尔俄歇天文台 SD 微阵列：Auger@TA 工作组报告
DOI：
10.1051/epjconf/202328306005
复制
发表时间：
2023
影响因子：
--
通讯作者：
Matthews, John
中科院分区：
文献类型：
--
作者：
Mayotte, Sonja;Caraça-Valente, Jorge;Covault, Corbin;Fujii, Toshihiro;Im, Sungrae;James, Robin;Johnsen, Jeffrey;Kampert, Karl-Heinz;Kern, Heiko;Matthews, John
皮埃尔俄歇天文台（俄歇）和望远镜阵列计划（TA）是世界上最大的两个超高能宇宙射线天文台。它们分别在南半球和北方半球运行，纬度相似，但表面探测器（SD）设计不同。探测器设计的这种差异改变了它们对广泛空气簇射的各种成分的灵敏度。Auger@TA工作组的首要目标是交叉校准两个天文台的SD阵列，以确定或排除Auger和TA测量的通量明显差异的系统原因。项目本身分为两个阶段。第一阶段于2020年完成，包括通过部署两个俄歇站（一个具有单一中央PMT的原型站和一个标准俄歇站，位于中央激光设施附近的TA SD中间）以及沿着一个经修改的TA站（以从TA SD提供外部触发）来促进站级比较。这提供了用俄歇和TA探测器观察同样广泛的空气簇射的机会，以直接比较它们的测量结果。Auger@TA的第二阶段目前正在进行中，目的是在TA阵列内建立一个自触发微型Auger阵列。该微阵列由八个俄歇站组成，其中七个使用1-PMT原型配置，形成一个单一的六边形，传统的俄歇间距为1.5公里。第8个站是标准的Auger 3-PMT配置，并放置在六边形的中心，沿着TA站形成一个三联体。每个Auger站还将配备AugerPrime表面闪烁探测器。将使用一个使用现成组件的定制通信系统，以提供台站之间的通信，并通过一个中央通信台站远程访问每个台站。微阵列的部署于2022年9月底进行。进行模拟研究以测量Auger@TA微阵列的预期性能并推导出触发效率和事件率。
The Pierre Auger Observatory (Auger) and the Telescope Array Project (TA) are the two largest ultra-high-energy cosmic ray observatories in the world. They operate in the Southern and Northern hemispheres, respectively, at similar latitudes but with different surface detector (SD) designs. This difference in detector design changes their sensitivity to the various components of extensive air showers. The over-arching goal of the Auger@TA working group is to cross-calibrate the SD arrays of the two observatories in order to identify or rule out systematic causes for the apparent differences in the flux measured at Auger and TA. The project itself is divided into two phases. Phase-I finished in 2020 and consisted of a station-level comparison facilitated by the deployment of two Auger stations, one prototype station with a single central PMT and a standard Auger station, in the middle of the TA SD near the Central Laser Facility, along with a modified TA station to provide external triggers from the TA SD. This provided the opportunity to observe the same extensive air showers with both Auger and TA detectors to directly compare their measurements. Phase-II of Auger@TA is currently underway and aims at building a self-triggering micro-Auger-array inside the TA array. This micro-array consists of eight Auger stations, seven of which use a 1-PMT prototype configuration and form a single hexagon with a traditional 1.5 km Auger spacing. The 8th station is of the standard Auger 3-PMT configuration and is placed at the center of the hexagon, along with a TA station to form a triplet. Each Auger station will also be outfitted with an AugerPrime Surface Scintillator Detector. A custom communication system using readily available components will be used to provide communication between the stations and remote access to each station via a central communications station. The deployment of the micro-array took place at the end of September 2022. A simulation study was carried out to gauge the expected performance of the Auger@TA micro-array and to derive trigger effi ciencies and event rates.