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Title: Fabrication of Detector Arrays for the SPT-3G Receiver

Journal Article · · Journal of Low Temperature Physics

The South Pole Telescope third-generation (SPT-3G) receiver was installed during the austral summer of 2016–2017. It is designed to measure the cosmic microwave background across three frequency bands centered at 95, 150, and 220 GHz. The SPT-3G receiver has ten focal plane modules, each with 269 pixels. Each pixel features a broadband sinuous antenna coupled to a niobium microstrip transmission line. In-line filters define the desired band-passes before the signal is coupled to six bolometers with Ti/Au/Ti/Au transition edge sensors (three bands × two polarizations). In total, the SPT-3G receiver is composed of 16,000 detectors, which are read out using a 68 × frequency-domain multiplexing scheme. In this paper, we present the process employed in fabricating the detector arrays.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF); Gordon and Betty Moore Foundation (GBMF)
Contributing Organization:
SPT Team
Grant/Contract Number:
AC02-76SF00515; AC02-06CH11357; AC02-07CH11359
OSTI ID:
1490485
Alternate ID(s):
OSTI ID: 1488564; OSTI ID: 1496029
Journal Information:
Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 193; ISSN 0022-2291
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (11)

Fabrication of large dual-polarized multichroic TES bolometer arrays for CMB measurements with the SPT-3G camera journal August 2015
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Tuning SPT-3G Transition-Edge-Sensor Electrical Properties with a Four-Layer Ti–Au–Ti–Au Thin-Film Stack journal April 2018
Dual-Polarized Sinuous Antennas on Extended Hemispherical Silicon Lenses journal September 2012
Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers journal June 2018
Multi-chroic Dual-Polarization Bolometric Focal Plane for Studies of the Cosmic Microwave Background journal March 2012
Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope journal June 2017
A dual-polarized broadband planar antenna and channelizing filter bank for millimeter wavelengths journal February 2013
A Dual-polarized Broadband Planar Antenna and Channelizing Filter Bank for Millimeter Wavelengths text January 2013
Optical Characterization of the SPT-3G Camera journal May 2018

Cited By (8)

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
SPT-3G: A Multichroic Receiver for the South Pole Telescope journal July 2018
Complex impedance of TESs under AC bias using FDM readout system journal April 2019
Complex impedance of TESs under AC bias using FDM readout system text January 2021
Calculation and measurement of critical temperature in thin superconducting multilayers text January 2018
Calculation and measurement of critical temperature in thin superconducting multilayers journal August 2018
Optical Characterization of the SPT-3G Camera journal May 2018
Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers journal June 2018