SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope

• Main Authors: Benson, B. A., Ade, P. A. R., Ahmed, Z., Allen, S. W., Arnold, K., Austermann, J. E., Bender, A. N., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. M., Ciocys, S. T., Cliche, J. F., Crawford, T. M., Cukierman, A., de Haan, T., Dobbs, M. A., Dutcher, D., Everett, W., Gilbert, A., Halverson, N. W., Hanson, D., Harrington, N. L., Hattori, K., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Irwin, K. D., Keisler, R., Knox, L., Kubik, D., Kuo, C. L., Lee, A. T., Leitch, E. M., Li, D., McDonald, M., Meyer, S. S., Montgomery, J., Myers, M., Natoli, T., Nguyen, H., Novosad, V., Padin, S., Pan, Z., Pearson, J., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Simard, G., Smecher, G., Sayre, J. T., Shirokoff, E., Stark, A. A., Story, K., Suzuki, A., Thompson, K. L., Tucker, C., Vanderlinde, K., Vieira, J. D., Vikhlinin, A., Wang, G., Yefremenko, V., Yoon, K. W.
• Format: Text
• Language: unknown
• Published: arXiv 2014
• Subjects: Instrumentation and Methods for Astrophysics astro-ph.IM; Cosmology and Nongalactic Astrophysics astro-ph.CO; FOS Physical sciences; South Pole; South pole
• Online Access: https://dx.doi.org/10.48550/arxiv.1407.2973; https://arxiv.org/abs/1407.2973

We describe the design of a new polarization sensitive receiver, SPT-3G, for the 10-meter South Pole Telescope (SPT). The SPT-3G receiver will deliver a factor of ~20 improvement in mapping speed over the current receiver, SPTpol. The sensitivity of the SPT-3G receiver will enable the advance from statistical detection of B-mode polarization anisotropy power to high signal-to-noise measurements of the individual modes, i.e., maps. This will lead to precise (~0.06 eV) constraints on the sum of neutrino masses with the potential to directly address the neutrino mass hierarchy. It will allow a separation of the lensing and inflationary B-mode power spectra, improving constraints on the amplitude and shape of the primordial signal, either through SPT-3G data alone or in combination with BICEP-2/KECK, which is observing the same area of sky. The measurement of small-scale temperature anisotropy will provide new constraints on the epoch of reionization. Additional science from the SPT-3G survey will be significantly enhanced by the synergy with the ongoing optical Dark Energy Survey (DES), including: a 1% constraint on the bias of optical tracers of large-scale structure, a measurement of the differential Doppler signal from pairs of galaxy clusters that will test General Relativity on ~200 Mpc scales, and improved cosmological constraints from the abundance of clusters of galaxies. : 21 pages, 9 figures. To be published in Proceedings of SPIE Volume 9153. Presented at SPIE Astronomical Telescopes + Instrumentation 2014, conference 9153