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

Journal Article · · Journal of Low Temperature Physics

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 Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
SPT Team
Grant/Contract Number:
AC02-76SF00515; AC02-06CH11357; AC02-07CH11359
OSTI ID:
1490476
Alternate ID(s):
OSTI ID: 1572475
OSTI ID: 1523430
Journal Information:
Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 193; ISSN 0022-2291
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Low-Temperature Detectors for CMB Imaging Arrays journal August 2018
On-Sky Performance of the SPT-3G Frequency-Domain Multiplexed Readout journal December 2019
Demonstration of 220/280 GHz Multichroic Feedhorn-Coupled TES Polarimeter journal January 2020
The Physics of Galaxy Cluster Outskirts journal January 2019
Digital frequency multiplexing with sub-Kelvin SQUIDs
  • Lowitz, Amy E.; Bender, Amy N.; Dobbs, Matthew A.
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2311984
conference July 2018
Year two instrument status of the SPT-3G cosmic microwave background receiver
  • Carter, Faustin W.; Cecil, Thomas W.; Chang, Clarence L.
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2312426
conference August 2018
Characterization and performance of the second-year SPT-3G focal plane
  • Ahmed, Zeeshan; Thakur, Ritoban B.; Bender, Amy N.
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2312451
conference July 2018
Design and characterization of the SPT-3G receiver
  • Sobrin, Joshua A.; Ade, Peter; Ahmed, Zeeshan
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2314366
conference August 2018
Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) electronics for future CMB and sub-millimeter surveys
  • Henderson, Shawn W.; Ahmed, Zeeshan; Brown, David
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2314435
conference July 2018
On-sky performance of the SPT-3G frequency-domain multiplexed readout text January 2019

Figures / Tables (4)


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