【7.10; Seminar】2024年粒子天体物理重点实验室系列学术报告 #35：The Small-Sized Telescopes and other SiPM technologies for the Cherenkov Telescope Array Observatory

时间/Time：7月10日上午9: 00/Wensday, July 10th at 9:00 am

地点/Location：多学科楼229会议室/Multidisciplinary Building 229

报告人/Speaker：Davide Depaoli（Max Planck Institute for Nuclear Physics）

题目/Title：The Small-Sized Telescopes and other SiPM technologies for the Cherenkov Telescope Array Observatory

主持人/Host：张寿山 研究员

摘要/Abstract：

The Cherenkov Telescope Array Observatory (CTAO) will be the next-generation ground-based gamma-ray observatory in the energy range from tens of GeV to hundreds of TeV. It will be built at two different sites, one in each hemisphere, to ensure complete sky coverage. The observatory will have telescopes of three different sizes: large, medium and small, with primary reflectors of 23 m, 11.5 m and 4.3 m in diameter respectively. The Small-Sized Telescopes (SSTs) will target the highest energies, with a planned deployment of at least 37 and potentially up to 70 units at the southern site in Paranal, Chile. These SSTs will use a dual-mirror Schwarzschild-Couder design, with a compact SiPM camera measuring about 50 cm and weighing less than 100 kg. At the lowest energies, large telescopes use instead a single-mirror design and a PMT-based camera. However, a potential upgrade to SiPM is already being investigated, called the LST Advanced Camera. In this seminar the design choices for the SST camera and some of the first prototypes for the LST SiPM-based camera will be reported.  Finally, a short overview of typical procedures and methods for observing operations will be given.

切伦科夫望远镜阵列观测站（CTAO）将是下一代地面伽马射线观测站，覆盖从几十GeV到数百TeV的能量范围。它将建在南北半球两个不同的地点，以确保完整的天空覆盖。该观测站将拥有三种不同尺寸的望远镜：大型、中型和小型，其主反射镜直径分别为23米、11.5米和4.3米。小型望远镜（SSTs）将瞄准最高能量，在智利帕拉纳尔的南部站点计划部署至少37个，最多可达70个。这些SSTs将采用双镜Schwarzschild-Couder设计，配备一个紧凑的SiPM摄像头，尺寸约为50厘米，重量不到100公斤。当前在最低能量下，LST采用单镜设计和基于PMT的摄像头。然而，目前已经在研究一个升级版本，称为LST高级摄像头，采用了SiPM技术。在本次研讨会中，将报告SST摄像头的设计以及LST基于SiPM的摄像头的首个原型样机。最后，将简要概述观测操作的典型程序和方法。

个人简介/Biography：

Davide Depaoli specializes in the design and testing of instrumentation and electronics. His doctoral work involved developing a SiPM-based module for the Advanced Camera of the Large-Sized Telescopes of the Cherenkov Telescope Array (CTA). Currently, as a postdoctoral researcher at the Max Planck Institute for Nuclear Physics, he is furthering his expertise within the Small-Sized Telescope (SST) project of CTA, focusing on finalizing the camera design and setting the camera commissioning facility.

Davide Depaoli致力于切伦科夫望远镜仪器和电子设备的设计和测试。他的博士研究涉及切伦科夫望远镜阵列（CTA）的LST基于SiPM模块的成像探头开发。目前，是马克斯·普朗克核物理研究所的博士后，正在深入研究CTA的小型望远镜（SST）项目，主要从事完善摄像头设计，同时建立摄像头调试设施。