SPT-3G: A Multichroic Receiver for the South Pole Telescope

• Published in: Journal of Low Temperature Physics
• Main Authors: Anderson, A. J., Ade, P. A. R., Ahmed, Z., Austermann, J. E., Avva, J. S., Barry, P. S., Thakur, R. Basu, Bender, A. N., Benson, B. A., Bleem, L. E., Byrum, K., Carlstrom, J. E., Carter, F. W., Cecil, T., Chang, C. L., Cho, H. M., Cliche, J. F., Crawford, T. M., Cukierman, A., Denison, E. V., de Haan, T., Ding, J., Dobbs, M. A., Dutcher, D., Everett, W., Foster, A., Gannon, R. N., Gilbert, A., Groh, J. C., Halverson, N. W., Harke-Hosemann, A. H., Harrington, N. L., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Huang, N., Irwin, K. D., Jeong, O. B., Jonas, M., Khaire, T., Knox, L., Kofman, A. M., Korman, M., Kubik, D., Kuhlmann, S., Kuklev, N., Kuo, C. L., Lee, A. T., Leitch, E. M., Lowitz, A. E., Meyer, S. S., Michalik, D., Montgomery, J., Nadolski, A., Natoli, T., Nguyen, H., Noble, G. I., Novosad, V., Padin, S., Pan, Z., Pearson, J., Posada, C. M., Rahlin, A., Reichardt, C. L., Ruhl, J. E., Saunders, L. J., Sayre, J. T., Shirley, I., Shirokoff, E., Smecher, G., Sobrin, J. A., Stark, A. A., Story, K. T., Suzuki, A., Tang, Q. Y., Thompson, K. L., Tucker, C., Vale, L. R., Vanderlinde, K., Vieira, J. D., Wang, G., Whitehorn, N., Yefremenko, V., Yoon, K. W., Young, M. R.
• Language: unknown
• Published: 2023
• Subjects: 79 ASTRONOMY AND ASTROPHYSICS; South Pole; South pole
• Online Access: http://www.osti.gov/servlets/purl/1490476; https://www.osti.gov/biblio/1490476; https://doi.org/10.1007/s10909-018-2007-z

A new receiver for the South Pole Telescope, SPT-3G, was deployed in early 2017 to map the cosmic microwave background at 95, 150, and 220 GHz with ~ 16,000 detectors, 10 times more than its predecessor SPTpol. The increase in detector count is made possible by lenslet-coupled trichroic polarization-sensitive pixels fabricated at Argonne National Laboratory, new 68 × frequency-domain multiplexing readout electronics, and a higher-throughput optical design. The enhanced sensitivity of SPT-3G will enable a wide range of results including constraints on primordial B-mode polarization, measurements of gravitational lensing of the CMB, and a galaxy cluster survey. In this paper, we present an overview of the instrument and its science objectives, highlighting its measured performance and plans for the upcoming 2018 observing season.