SPT-3G: A Multichroic Receiver for the South Pole Telescope
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.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Laboratory Directed Research and Development (LDRD) Program
- Contributing Organization:
- SPT Team
- Grant/Contract Number:
- AC02-76SF00515; PLR-1248097; PHY- 1125897; GBMF 947; AC02-06CH11357; AC02-07CH11359; AST-0956135
- OSTI ID:
- 1490476
- Alternate ID(s):
- OSTI ID: 1523430
- Report Number(s):
- FERMILAB-CONF-17-697-AE; PII: 2007
- Journal Information:
- Journal of Low Temperature Physics, Vol. 193, Issue 5-6; ISSN 0022-2291
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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