Abstract The Fluorescence detector Array of Single-pixel Telescopes (FAST) is a design concept for a next-generation UHECR observatory, addressing the requirements for a large-area, low-cost detector suitable for measuring the properties of ultra-high energy cosmic rays (UHECRs), having energies exceeding 30 EeV, with an unprecedented aperture. We have developed a full-scale prototype consisting of four 200 mm diameter photo-multiplier tubes at the focus of a segmented mirror of 1.6 m in diameter. In October 2016, September 2017, and September 2018 we installed three such prototypes at the Black Rock Mesa site of the Telescope Array experiment in central Utah, USA. All three telescopes have been steadily taking data since installation. We report on the design and installation of these prototypes, and present some preliminary results, including measurements of artificial light sources, distant ultraviolet lasers, and UHECRs.

中文翻译：

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单像素望远镜荧光探测器阵列的第一个全尺寸原型

摘要 单像素望远镜荧光探测器阵列 (FAST) 是下一代 UHECR 天文台的设计理念，解决了对适用于测量超高能宇宙射线特性的大面积、低成本探测器的需求。 (UHECRs)，具有超过 30 EeV 的能量，具有前所未有的孔径。我们开发了一个全尺寸原型，由直径 1.6 m 的分段镜的焦点处的四个直径为 200 mm 的光电倍增管组成。2016 年 10 月、2017 年 9 月和 2018 年 9 月，我们在美国犹他州中部望远镜阵列实验的 Black Rock Mesa 站点安装了三个这样的原型。自安装以来，所有三台望远镜都在稳定地采集数据。我们报告了这些原型的设计和安装，并提出了一些初步结果，