Simons Observatory: Characterization of the Large Aperture Telescope Receiver

Tanay Bhandarkar; Saianeesh K. Haridas; Jeff Iuliano; Anna Kofman; Alex Manduca; Karen Perez Sarmiento; John Orlowski-Scherer; Thomas P. Satterthwaite; Yuhan Wang; Zeeshan Ahmed; Jason E. Austermann; Kyuyoung Bae; Gabriele Coppi; Mark J. Devlin; Simon R. Dicker; Peter N. Dow; Shannon M. Duff; Daniel Dutcher; Nicholas Galitzki; Jon E. Gudmundsson; Shawn W. Henderson; Johannes Hubmayr; Bradley R. Johnson; Matthew A. Koc; Brian J. Koopman; Michele Limon; Michael J. Link; Tammy J. Lucas; Jenna E. Moore; Federico Nati; Michael D. Niemack; Carlos E. Sierra; Max Silva-Feaver; Robinjeet Singh; Rita F. Sonka; Suzanne T. Staggs; Robert J. Thornton; Tran Tsan; Jeff L. Van Lanen; Eve M. Vavagiakis; Michael R. Vissers; Liam Walters; Mario Zannoni; Kaiwen Zheng

doi:10.3847/1538-4365/ade0bd

Simons Observatory: Characterization of the Large Aperture Telescope Receiver

Tanay Bhandarkar
, Saianeesh K. Haridas
, Jeff Iuliano
, Anna Kofman
, Alex Manduca
, Karen Perez Sarmiento
, John Orlowski-Scherer
, Thomas P. Satterthwaite
, Yuhan Wang
, Zeeshan Ahmed
, Jason E. Austermann
, Kyuyoung Bae
, Gabriele Coppi
, Mark J. Devlin
, Simon R. Dicker
, Peter N. Dow
, Shannon M. Duff
, Daniel Dutcher
, Nicholas Galitzki
, Jon E. Gudmundsson

Shawn W. Henderson, Johannes Hubmayr, Bradley R. Johnson, Matthew A. Koc, Brian J. Koopman, Michele Limon, Michael J. Link, Tammy J. Lucas, Jenna E. Moore, Federico Nati, Michael D. Niemack, Carlos E. Sierra, Max Silva-Feaver, Robinjeet Singh, Rita F. Sonka, Suzanne T. Staggs, Robert J. Thornton, Tran Tsan, Jeff L. Van Lanen, Eve M. Vavagiakis, Michael R. Vissers, Liam Walters, Mario Zannoni, Kaiwen Zheng

Research output: Contribution to journal › Article › peer-review

Abstract

The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the Atacama Desert in Chile. At the LAT’s focal plane, SO will install >62,000 transition-edge sensor detectors across 13 optics tubes (OTs) within the Large Aperture Telescope Receiver (LATR), the largest cryogenic camera ever built to observe the CMB. Here we report on the validation of the LATR in the laboratory and the subsequent dark testing and validation within the LAT. We show that the LATR meets cryogenic, optical, and detector specifications required for high-sensitivity measurements of the CMB. At the time of writing, the LATR is installed in the LAT with six OTs (corresponding to >31,000 detectors), and the LAT mirrors and remaining seven OTs are undergoing development.

Original language	English (US)
Article number	34
Journal	Astrophysical Journal, Supplement Series
Volume	279
Issue number	2
DOIs	https://doi.org/10.3847/1538-4365/ade0bd
State	Published - Aug 1 2025

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4365/ade0bd

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Bhandarkar, T., Haridas, S. K., Iuliano, J., Kofman, A., Manduca, A., Perez Sarmiento, K., Orlowski-Scherer, J., Satterthwaite, T. P., Wang, Y., Ahmed, Z., Austermann, J. E., Bae, K., Coppi, G., Devlin, M. J., Dicker, S. R., Dow, P. N., Duff, S. M., Dutcher, D., Galitzki, N., ... Zheng, K. (2025). Simons Observatory: Characterization of the Large Aperture Telescope Receiver. Astrophysical Journal, Supplement Series, 279(2), Article 34. https://doi.org/10.3847/1538-4365/ade0bd

@article{37350da11dcb49c7a2cf27d912144268,

title = "Simons Observatory: Characterization of the Large Aperture Telescope Receiver",

abstract = "The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the Atacama Desert in Chile. At the LAT{\textquoteright}s focal plane, SO will install >62,000 transition-edge sensor detectors across 13 optics tubes (OTs) within the Large Aperture Telescope Receiver (LATR), the largest cryogenic camera ever built to observe the CMB. Here we report on the validation of the LATR in the laboratory and the subsequent dark testing and validation within the LAT. We show that the LATR meets cryogenic, optical, and detector specifications required for high-sensitivity measurements of the CMB. At the time of writing, the LATR is installed in the LAT with six OTs (corresponding to >31,000 detectors), and the LAT mirrors and remaining seven OTs are undergoing development.",

author = "Tanay Bhandarkar and Haridas, \{Saianeesh K.\} and Jeff Iuliano and Anna Kofman and Alex Manduca and \{Perez Sarmiento\}, Karen and John Orlowski-Scherer and Satterthwaite, \{Thomas P.\} and Yuhan Wang and Zeeshan Ahmed and Austermann, \{Jason E.\} and Kyuyoung Bae and Gabriele Coppi and Devlin, \{Mark J.\} and Dicker, \{Simon R.\} and Dow, \{Peter N.\} and Duff, \{Shannon M.\} and Daniel Dutcher and Nicholas Galitzki and Gudmundsson, \{Jon E.\} and Henderson, \{Shawn W.\} and Johannes Hubmayr and Johnson, \{Bradley R.\} and Koc, \{Matthew A.\} and Koopman, \{Brian J.\} and Michele Limon and Link, \{Michael J.\} and Lucas, \{Tammy J.\} and Moore, \{Jenna E.\} and Federico Nati and Niemack, \{Michael D.\} and Sierra, \{Carlos E.\} and Max Silva-Feaver and Robinjeet Singh and Sonka, \{Rita F.\} and Staggs, \{Suzanne T.\} and Thornton, \{Robert J.\} and Tran Tsan and \{Van Lanen\}, \{Jeff L.\} and Vavagiakis, \{Eve M.\} and Vissers, \{Michael R.\} and Liam Walters and Mario Zannoni and Kaiwen Zheng",

note = "Publisher Copyright: {\textcopyright} 2025. The Author(s). Published by the American Astronomical Society.",

year = "2025",

month = aug,

day = "1",

doi = "10.3847/1538-4365/ade0bd",

language = "English (US)",

volume = "279",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

publisher = "American Astronomical Society",

number = "2",

}

Bhandarkar, T, Haridas, SK, Iuliano, J, Kofman, A, Manduca, A, Perez Sarmiento, K, Orlowski-Scherer, J, Satterthwaite, TP, Wang, Y, Ahmed, Z, Austermann, JE, Bae, K, Coppi, G, Devlin, MJ, Dicker, SR, Dow, PN, Duff, SM, Dutcher, D, Galitzki, N, Gudmundsson, JE, Henderson, SW, Hubmayr, J, Johnson, BR, Koc, MA, Koopman, BJ, Limon, M, Link, MJ, Lucas, TJ, Moore, JE, Nati, F, Niemack, MD, Sierra, CE, Silva-Feaver, M, Singh, R, Sonka, RF, Staggs, ST, Thornton, RJ, Tsan, T, Van Lanen, JL, Vavagiakis, EM, Vissers, MR, Walters, L, Zannoni, M & Zheng, K 2025, 'Simons Observatory: Characterization of the Large Aperture Telescope Receiver', Astrophysical Journal, Supplement Series, vol. 279, no. 2, 34. https://doi.org/10.3847/1538-4365/ade0bd

TY - JOUR

T1 - Simons Observatory

T2 - Characterization of the Large Aperture Telescope Receiver

AU - Bhandarkar, Tanay

AU - Haridas, Saianeesh K.

AU - Iuliano, Jeff

AU - Kofman, Anna

AU - Manduca, Alex

AU - Perez Sarmiento, Karen

AU - Orlowski-Scherer, John

AU - Satterthwaite, Thomas P.

AU - Wang, Yuhan

AU - Ahmed, Zeeshan

AU - Austermann, Jason E.

AU - Bae, Kyuyoung

AU - Coppi, Gabriele

AU - Devlin, Mark J.

AU - Dicker, Simon R.

AU - Dow, Peter N.

AU - Duff, Shannon M.

AU - Dutcher, Daniel

AU - Galitzki, Nicholas

AU - Gudmundsson, Jon E.

AU - Henderson, Shawn W.

AU - Hubmayr, Johannes

AU - Johnson, Bradley R.

AU - Koc, Matthew A.

AU - Koopman, Brian J.

AU - Limon, Michele

AU - Link, Michael J.

AU - Lucas, Tammy J.

AU - Moore, Jenna E.

AU - Nati, Federico

AU - Niemack, Michael D.

AU - Sierra, Carlos E.

AU - Silva-Feaver, Max

AU - Singh, Robinjeet

AU - Sonka, Rita F.

AU - Staggs, Suzanne T.

AU - Thornton, Robert J.

AU - Tsan, Tran

AU - Van Lanen, Jeff L.

AU - Vavagiakis, Eve M.

AU - Vissers, Michael R.

AU - Walters, Liam

AU - Zannoni, Mario

AU - Zheng, Kaiwen

PY - 2025/8/1

Y1 - 2025/8/1

N2 - The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the Atacama Desert in Chile. At the LAT’s focal plane, SO will install >62,000 transition-edge sensor detectors across 13 optics tubes (OTs) within the Large Aperture Telescope Receiver (LATR), the largest cryogenic camera ever built to observe the CMB. Here we report on the validation of the LATR in the laboratory and the subsequent dark testing and validation within the LAT. We show that the LATR meets cryogenic, optical, and detector specifications required for high-sensitivity measurements of the CMB. At the time of writing, the LATR is installed in the LAT with six OTs (corresponding to >31,000 detectors), and the LAT mirrors and remaining seven OTs are undergoing development.

AB - The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the Atacama Desert in Chile. At the LAT’s focal plane, SO will install >62,000 transition-edge sensor detectors across 13 optics tubes (OTs) within the Large Aperture Telescope Receiver (LATR), the largest cryogenic camera ever built to observe the CMB. Here we report on the validation of the LATR in the laboratory and the subsequent dark testing and validation within the LAT. We show that the LATR meets cryogenic, optical, and detector specifications required for high-sensitivity measurements of the CMB. At the time of writing, the LATR is installed in the LAT with six OTs (corresponding to >31,000 detectors), and the LAT mirrors and remaining seven OTs are undergoing development.

UR - https://www.scopus.com/pages/publications/105011302164

UR - https://www.scopus.com/pages/publications/105011302164#tab=citedBy

U2 - 10.3847/1538-4365/ade0bd

DO - 10.3847/1538-4365/ade0bd

M3 - Article

AN - SCOPUS:105011302164

SN - 0067-0049

VL - 279

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 34

ER -

Simons Observatory: Characterization of the Large Aperture Telescope Receiver

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