WoU-MMA: Development of the Optical Alignment Systems for the Medium-Sized Telescopes of the Cherenkov Telescope Array

切伦科夫望远镜阵列天文台(CTAO)是一个即将推出的最先进的设备，用于研究非常高能的伽马射线，并提供对宇宙中最极端的物体的变革性理解，包括脉冲星、超新星遗迹、伽马射线爆发和活动星系中心的超大质量黑洞。CTAO目前正在进入该项目的建设阶段，预计在大约三年内利用天文台的第一台探路器成像大气切伦科夫望远镜(IACT)进行首次科学观测。该奖项支持美国CTAO科学家为最初的七个中型CTA望远镜开发、制造和安装光学对准系统，其中五个在西班牙拉帕尔马的Rogue de los Muchachos天文台北部站点，一个在智利帕拉纳尔的欧洲南方天文台南部站点，以及位于亚利桑那州弗雷德·劳伦斯·惠普尔天文台的施瓦茨柴尔德-库德望远镜(PSCT)原型。获奖活动为学生和早期职业研究人员提供了一个独特的仪器培训场所，并计划举办一系列讲习班，为K-12学校开发教育高能天体物理材料。通过该奖项提供的美国领先贡献为美国科学家广泛接触CTAO和下一代伽马射线发现奠定了基础。CTAO将在三个望远镜孔径的大阵列中使用先进的IACT技术：大(23米)、中(10-12米)和小(4米)。该奖项所针对的中型望远镜包括单镜、主聚焦的Davis-Cotton设计和双镜、无光晕的Schwarzschild-Couder设计。该天文台在测量能量在20GeV-300TeV之间的天体物理伽马射线时，将提供比目前仪器高达十倍的灵敏度。随着成像面积增加3倍的设计改进，CTAO将使天体物理天空测量的完成速度比现有设施快约300倍，使高能伽马射线对多信使天体物理事件的后续跟踪发生革命性变化，包括由引力波和高能中微子警报触发的事件。位于北部的最初的五个中型望远镜将作为一个独立的仪器，在他们的能量波段中是最敏感的阵列。与目前正在现场建造的四台大尺寸望远镜一起运行，将形成迄今组装的最大、最灵敏的IACT阵列。在南部安装的第一个中型望远镜将是西半球南部的第一个IACT，为引力波等瞬变事件提供重要的新天空覆盖。最后，新颖的pSCT设计的高角分辨率将为CTAO计划提供独特的未来额外覆盖范围。这个项目推进了NSF宇宙大理想之窗的目标。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The Cherenkov Telescope Array Observatory (CTAO) is a forthcoming state-of-the-art facility to study very high-energy gamma-rays and provide transformative understanding of the most extreme objects in the Universe, including pulsars, supernova remnants, gamma-ray bursts, and supermassive black holes at the center of active galaxies. The CTAO is now entering the construction phase of the project, with first science observations anticipated in approximately three years utilizing the first pathfinder imaging atmospheric Cherenkov telescopes (IACTs) of the observatory. This award supports U.S. CTAO scientists in the development, fabrication, and installation of the optical alignment systems for the initial seven medium-sized CTA telescopes, including five at the northern site at Rogue de los Muchachos Observatory, La Palma, Spain, one at the southern site at the European Southern Observatory, Paranal, Chile, and the prototype Schwarzchild-Couder telescope (pSCT) located at the Fred Lawrence Whipple Observatory in Arizona. The awarded activities provide a unique instrumentation training ground for students and early career researchers and a series of workshops are planned to develop educational high-energy astrophysics materials for K-12 schools. The leading U.S. contributions provided via this award provide the foundation for broad access of U.S. scientists to CTAO and the next generation gamma-ray discoveries. The CTAO will utilize advanced IACT technology in large arrays of three telescope apertures: large (23m), medium (10-12m) and small (4m). The medium-scale telescopes targeted in this award involve a single-mirror, prime focus Davis-Cotton design and a double-mirror, aplanatic Schwarzschild-Couder design. The observatory will provide up to ten times increased sensitivity over current instruments in measurements of astrophysical gamma-rays at energies between 20 GeV – 300 TeV. With design improvements of a 3x increase in imaging area, the CTAO will enable astrophysical sky surveys to be completed approximately 300x faster than current facilities, revolutionizing high-energy gamma-ray follow-up to multi-messenger astrophysics events, including those triggered by gravitational wave and high-energy neutrino alerts. The initial five medium telescopes at the northern site will be the most sensitive array in their energy-band as a stand-alone instrument. Operating in conjunction with the four large-sized telescopes currently being built on the site will form the largest, most sensitivity array of IACTs yet assembled. The first medium-sized telescope to be outfitted at the southern site will be the first IACT in the southern portion of the Western hemisphere, providing important new sky coverage for transient events such as gravitational wave counterparts. Finally, the high-angular resolution of the novel pSCT design will provide unique future additional reach to the CTAO program. This project advances the goals of the NSF Windows on the Universe Big Idea.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.