The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes

Journal Article · 24 September 2024 · Astrophys.J.Suppl.

DOI: https://doi.org/10.3847/1538-4365/ad64c9 · OSTI ID:2467543

Galitzki, Nicholas  ^[1]; Tsan, Tran  ^[2]; Spisak, Jake ^[2]; Randall, Michael ^[2]; Silva-Feaver, Max  ^[2]; Seibert, Joseph ^[2]; Lashner, Jacob  ^[3]; Adachi, Shunsuke  ^[4]; Adkins, Sean M.  ^[5]; Alford, Thomas  ^[6]; Arnold, Kam  ^[2]; Ashton, Peter C.  ^[7]; Austermann, Jason E.  ^[8]; Baccigalupi, Carlo  ^[9]; Bazarko, Andrew  ^[10]; Beall, James A.  ^[8]; Bhimani, Sanah ^[3]; Bixler, Bryce  ^[2]; Coppi, Gabriele  ^[11]; Corbett, Lance ^[12] ; Crowley, Kevin D.  ^[10]; Crowley, Kevin T.  ^[2]; Day-Weiss, Samuel  ^[10]; Devlin, Mark J. ; Dicker, Simon  ^[13]; DiGia, Brooke ; Dow, Peter N. ^[14]; Duell, Cody J.  ^[15]; Duff, Shannon M.  ^[8]; Gerras, Remington G.  ^[16]; Groh, John C.  ^[17]; Gudmundsson, Jon E.  ^[18]; Harrington, Kathleen  ^[19]; Hasegawa, Masaya  ^[20]; Healy, Erin  ^[21]; Henderson, Shawn W.  ^[22]; Hubmayr, Johannes  ^[8]; Iuliano, Jeffrey ^[23]; Johnson, Bradley R.  ^[14]; Keating, Brian  ^[2]; Keller, Ben  ^[15]; Kiuchi, Kenji ^[24]; Kofman, Anna M.  ^[13]; Koopman, Brian J.  ^[3]; Kusaka, Akito  ^[25]; Lee, Adrian T.  ^[12]; Lew, Richard A.  ^[26]; Lin, Lawrence T.  ^[27]; Link, Michael J. ^[8]; Lucas, Tammy J.  ^[8]; Lungu, Marius ^[28]; Mangu, Aashrita  ^[29]; McMahon, Jeffrey J. ^[30]; Miller, Amber D. ^[16]; Moore, Jenna E.  ^[31]; Morshed, Magdy  ^[32]; Nakata, Hironobu  ^[4]; Nati, Federico  ^[11]; Newburgh, Laura B.  ^[3]; Nguyen, David V.  ^[3]; Niemack, Michael D. ^[33]; Page, Lyman A.  ^[10]; Sakaguri, Kana  ^[24]; Sakurai, Yuki  ^[34]; Rao, Mayuri Sathyanarayana  ^[35]; Saunders, Lauren J.  ^[36]; Shroyer, Jordan E.  ^[14]; Sugiyama, Junna  ^[24]; Tajima, Osamu  ^[4]; Takeuchi, Atsuto ^[24]; Bua, Refilwe Tanah  ^[37]; Teply, Grant ^[2]; Terasaki, Tomoki  ^[24]; Ullom, Joel N.  ^[8]; Van Lanen, Jeffrey L. ^[8]; Vavagiakis, Eve M.  ^[15]; Vissers, Michael R.  ^[8]; Walters, Liam ^[14]; Wang, Yuhan  ^[10]; Xu, Zhilei  ^[38]; Yamada, Kyohei  ^[39]; Zheng, Kaiwen  ^[10]

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1. Texas U.; U. Texas, Austin (main)
2. UC, San Diego
3. Yale U. (main)
4. Kyoto U.
5. IAEC, Austin
6. Chicago U.
7. SRI Intl., Menlo Park
8. NIST, Boulder
9. SISSA, Trieste; INFN, Trieste; IFPU, Trieste
10. Princeton U.
11. Milan Bicocca U.
12. UC, Berkeley; LBNL, Berkeley
13. UPenn, Philadelphia
14. Virginia U.
15. Cornell U., Phys. Dept.
16. Southern California U.
17. LBL, Berkeley
18. Stockholm U.; Stockholm U., OKC; Iceland U.
19. Argonne; Chicago U., Astron. Astrophys. Ctr.
20. KEK, Tsukuba
21. Chicago U., KICP
22. KIPAC, Menlo Park; SLAC
23. Villanova U.
24. Tokyo U.
25. Tokyo U.; LBNL, Berkeley; Tokyo U., RESCEU; Tokyo U., IPMU
26. La Jolla, RFSC; NIST, Boulder
27. Cornell U., LNS
28. Pennsylvania U.
29. UC, Berkeley
30. Chicago U., Astron. Astrophys. Ctr.; Chicago U., KICP; Chicago U., EFI; Chicago U.; Fermilab
31. Arizona State U.
32. APC, Paris; CPB, Berkeley
33. Cornell U., Phys. Dept.; Cornell U., LNS
34. Shinshu U.; Tokyo U., IPMU
35. Raman Research Inst., Bangalore
36. Fermilab
37. Brown U.
38. MIT
39. Princeton U.; Tokyo U.

The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes to a sensitivity of σ(r) = 0.002, with quantified systematic errors well below this value. Each SAT is a self-contained cryogenic telescope with a 35° field of view, 42 cm diameter optical aperture, 40 K half-wave plate, 1 K refractive optics, and <0.1 K focal plane that holds >12,000 transition edge sensor detectors. We describe the nominal design of the SATs and present details about the integration and testing for one operating at 93 and 145 GHz.

• Research Organization: UC, Berkeley; MIT; Chicago U.; SISSA, Trieste; UC, San Diego; Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.; LBNL, Berkeley; Tokyo U., RESCEU; Brown U.; CPB, Berkeley; Cornell U., LNS; INFN, Trieste; Shinshu U.; Arizona State U.; La Jolla, RFSC; Yale U. (main); IAEC, Austin; U. Texas, Austin (main); Raman Research Inst., Bangalore; Villanova U.; Virginia U.; Princeton U.; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Kyoto U.; SRI Intl., Menlo Park; Milan Bicocca U.; Southern California U.; SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); APC, Paris; IFPU, Trieste; Texas U.; Pennsylvania U.; Stockholm U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Tokyo U., IPMU; Argonne National Laboratory (ANL), Argonne, IL (United States); Cornell U., Phys. Dept.; Iceland U.; Tokyo U.; Stockholm U., OKC; KEK, Tsukuba; NIST, Boulder; Chicago U., EFI; UPenn, Philadelphia
• Sponsoring Organization: US Department of Energy
• Grant/Contract Number: AC02-07CH11359; 89243024CSC000002
• OSTI ID: 2467543
• Report Number(s): FERMILAB-PUB-24-0646-PPD; oai:inspirehep.net:2784799; arXiv:2405.05550
• Journal Information: Astrophys.J.Suppl., Journal Name: Astrophys.J.Suppl. Journal Issue: 2 Vol. 274
• Country of Publication: United States
• Language: English