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arxiv 2106.11202 v2 pith:QSWQANZN submitted 2021-06-21 astro-ph.IM astro-ph.CO

The Design and Integrated Performance of SPT-3G

J. A. Sobrin , A. J. Anderson , A. N. Bender , B. A. Benson , D. Dutcher , A. Foster , N. Goeckner-Wald , J. Montgomery
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A. Nadolski A. Rahlin P. A. R. Ade Z. Ahmed E. Anderes M. Archipley J. E. Austermann J. S. Avva K. Aylor L. Balkenhol P. S. Barry R. Basu Thakur K. Benabed F. Bianchini L. E. Bleem F. R. Bouchet L. Bryant K. Byrum J. E. Carlstrom F. W. Carter T. W. Cecil C. L. Chang P. Chaubal G. Chen H.-M. Cho T.-L. Chou J.-F. Cliche T. M. Crawford A. Cukierman C. Daley T. de Haan E. V. Denison K. Dibert J. Ding M. A. Dobbs W. Everett C. Feng K. R. Ferguson J. Fu S. Galli A. E. Gambrel R. W. Gardner R. Gualtieri S. Guns N. Gupta R. Guyser N. W. Halverson A. H. Harke-Hosemann N. L. Harrington J. W. Henning G. C. Hilton E. Hivon G. P. Holder W. L. Holzapfel J. C. Hood D. Howe N. Huang K. D. Irwin O. B. Jeong M. Jonas A. Jones T. S. Khaire L. Knox A. M. Kofman M. Korman D. L. Kubik S. Kuhlmann C.-L. Kuo A. T. Lee E. M. Leitch A. E. Lowitz C. Lu S. S. Meyer D. Michalik M. Millea T. Natoli H. Nguyen G. I. Noble V. Novosad Y. Omori S. Padin Z. Pan P. Paschos J. Pearson C. M. Posada K. Prabhu W. Quan C. L. Reichardt D. Riebel B. Riedel M. Rouble J. E. Ruhl B. Saliwanchik J. T. Sayre E. Schiappucci E. Shirokoff G. Smecher A. A. Stark J. Stephen K. T. Story A. Suzuki C. Tandoi K. L. Thompson B. Thorne C. Tucker C. Umilta L. R. Vale K. Vanderlinde J. D. Vieira G. Wang N. Whitehorn W. L. K. Wu V. Yefremenko K. W. Yoon M. R. Young
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keywords spt-3ginstrumentdesignimageintegratedperformanceplanereadout
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SPT-3G is the third survey receiver operating on the South Pole Telescope dedicated to high-resolution observations of the cosmic microwave background (CMB). Sensitive measurements of the temperature and polarization anisotropies of the CMB provide a powerful dataset for constraining cosmology. Additionally, CMB surveys with arcminute-scale resolution are capable of detecting galaxy clusters, millimeter-wave bright galaxies, and a variety of transient phenomena. The SPT-3G instrument provides a significant improvement in mapping speed over its predecessors, SPT-SZ and SPTpol. The broadband optics design of the instrument achieves a 430 mm diameter image plane across observing bands of 95 GHz, 150 GHz, and 220 GHz, with 1.2 arcmin FWHM beam response at 150 GHz. In the receiver, this image plane is populated with 2690 dual-polarization, tri-chroic pixels (~16000 detectors) read out using a 68X digital frequency-domain multiplexing readout system. In 2018, SPT-3G began a multiyear survey of 1500 deg$^{2}$ of the southern sky. We summarize the unique optical, cryogenic, detector, and readout technologies employed in SPT-3G, and we report on the integrated performance of the instrument.

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  1. CMB Lensing Reconstruction Using Two Years of Temperature Data from the SPT-3G Summer Survey

    astro-ph.CO 2026-07 conditional novelty 5.0

    First CMB lensing reconstruction from two years of SPT-3G Summer temperature data yields A_comb = 1.015 ± 0.053 over 50 < L < 2000, consistent with Planck 2018 ΛCDM.