The Simons Observatory Large Aperture Telescope Receiver
Abstract
The Simons Observatory (SO) Large Aperture Telescope Receiver (LATR) will be coupled to the Large Aperture Telescope located at an elevation of 5,200 m on Cerro Toco in Chile. The resulting instrument will produce arcminute-resolution millimeter-wave maps of half the sky with unprecedented precision. The LATR is the largest cryogenic millimeter-wave camera built to date with a diameter of 2.4 m and a length of 2.6 m. It cools 1200 kg of material to 4 K and 200 kg to 100 mk, the operating temperature of the bolometric detectors with bands centered around 27, 39, 93, 145, 225, and 280 GHz. Ultimately, the LATR will accommodate 13 40 cm diameter optics tubes, each with three detector wafers and a total of 62,000 detectors. The LATR design must simultaneously maintain the optical alignment of the system, control stray light, provide cryogenic isolation, limit thermal gradients, and minimize the time to cool the system from room temperature to 100 mK. The interplay between these competing factors poses unique challenges. We discuss the trade studies involved with the design, the final optimization, the construction, and ultimate performance of the system.
Cite
@article{arxiv.2103.02747,
title = {The Simons Observatory Large Aperture Telescope Receiver},
author = {Ningfeng Zhu and Tanay Bhandarkar and Gabriele Coppi and Anna M. Kofman and John L. Orlowski-Scherer and Zhilei Xu and Shunsuke Adachi and Peter Ade and Simone Aiola and Jason Austermann and Andrew O. Bazarko and James A. Beall and Sanah Bhimani and J. Richard Bond and Grace E. Chesmore and Steve K. Choi and Jake Connors and Nicholas F. Cothard and Mark Devlin and Simon Dicker and Bradley Dober and Cody J. Duell and Shannon M. Duff and Rolando Dünner and Giulio Fabbian and Nicholas Galitzki and Patricio A. Gallardo and Joseph E. Golec and Saianeesh K. Haridas and Kathleen Harrington and Erin Healy and Shuay-Pwu Patty Ho and Zachary B. Huber and Johannes Hubmayr and Jeffrey Iuliano and Bradley R. Johnson and Brian Keatin and Kenji Kiuchi and Brian J. Koopman and Jack Lashner and Adrian T. Lee and Yaqiong Li and Michele Limon and Michael Link and Tammy J Lucas and Heather McCarrick and Jenna Moore and Federico Nati and Laura B. Newburgh and Michael D. Niemack and Elena Pierpaoli and Michael J. Randall and Karen Perez Sarmiento and Lauren J. Saunders and Joseph Seibert and Carlos Sierra and Rita Sonka and Jacob Spisak and Shreya Sutariya and Osamu Tajima and Grant P. Teply and Robert J. Thornton and Tran Tsan and Carole Tucker and Joel Ullom and Eve M. Vavagiakis and Michael R. Vissers and Samantha Walker and Benjamin Westbrook and Edward J. Wollack and Mario Zannoni},
journal= {arXiv preprint arXiv:2103.02747},
year = {2021}
}