【10.20; Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #27：New windows in the submillimeter sky with the CCAT Observatory

时间/Time: 10月20日周一下午1:00/Monday, October 20, 1:00 p.m.

地点/Location: 主楼415会议室/Meeting Room 415, Main building

报告人/Speaker: Prof. Micheal Niemack（美国康奈尔）

题目/Title: New windows in the submillimeter sky with the CCAT Observatory

主持人/Host: 李雅琼/Yaqiong LI

摘要/Abstract:

The CCAT Observatory is building the Fred Young Submillimeter Telescope, a novel, high-throughput, 6-meter aperture telescope, to enable a wide range of new measurements. The science goals include CMB measurements, line-intensity mapping of cosmic reionization, studying galaxy clusters, galactic magnetic fields, astronomical transients, and others. The Observatory is under construction at 5600 meters on Cerro Chajnantor, Chile. The complementarity of CCAT and cosmic microwave background observatories will be highlighted, and recent Atacama Cosmology Telescope results as well as preliminary measurements from the Simons Observatory will be presented. CCAT will make the most sensitive submillimeter measurements over a broad range of scales with its first high-throughput science receiver: Prime-Cam. This camera is designed to support over 10^5 kinetic inductance detectors and enable over 10x faster mapping speed than previous submillimeter observatories in atmospheric windows from 0.3 – 1.1 mm (280 – 850 GHz). We describe the project and instrument status, plans for early science observations starting in 2026, and possible future line-intensity mapping upgrades to probe cosmology.

个人简介/Biography:

Michael Niemack is a Professor of Physics and Astronomy at Cornell University, affiliated with the Laboratory of Atomic and Solid State Physics (LASSP). He is a leading researcher in the field of experimental cosmology, focusing on the development of novel instrumentation to study the Cosmic Microwave Background (CMB) and the origins of the universe.

His research group specializes in designing and deploying superconducting detector arrays, microwave-frequency optics, and cryogenic systems for next-generation telescopes. A significant portion of his work is dedicated to the Simons Observatory and the CCAT-prime project, where he plays a key role in advancing our understanding of the universe's fundamental properties, including its origin, composition, and the nature of inflation.

Professor Niemack's expertise bridges cosmology, astrophysics, and advanced technology development, making significant contributions to major international collaborations aimed at uncovering the secrets of the early universe.