skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Optical Characterization of the SPT-3G Focal Plane

Abstract

The third-generation South Pole Telescope camera is designed to measure the cosmic microwave background across three frequency bands (95, 150 and 220 GHz) with ~16,000 transition-edge sensor (TES) bolometers. Each multichroic pixel on a detector wafer has a broadband sinuous antenna that couples power to six TESs, one for each of the three observing bands and both polarization directions, via lumped element filters. Ten detector wafers populate the focal plane, which is coupled to the sky via a large-aperture optical system. Here we present the frequency band characterization with Fourier transform spectroscopy, measurements of optical time constants, beam properties, and optical and polarization efficiencies of the focal plane. The detectors have frequency bands consistent with our simulations, and have high average optical efficiency which is 86%, 77% and 66% for the 95, 150 and 220 GHz detectors. The time constants of the detectors are mostly between 0.5 ms and 5 ms. The beam is round with the correct size, and the polarization efficiency is more than 90% for most of the bolometers

Authors:
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
SPT
OSTI Identifier:
1438535
Report Number(s):
arXiv:1805.03219; FERMILAB-CONF-18-174-AE
1672406
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Journal Name:
J.Low Temp.Phys.
Additional Journal Information:
Conference: 17th International Workshop on Low Temperature Detectors, Kurume City, Japan, 07/17-07/21/2017
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Pan, Z., and et al. Optical Characterization of the SPT-3G Focal Plane. United States: N. p., 2018. Web. doi:10.1007/s10909-018-1935-y.
Pan, Z., & et al. Optical Characterization of the SPT-3G Focal Plane. United States. doi:10.1007/s10909-018-1935-y.
Pan, Z., and et al. Tue . "Optical Characterization of the SPT-3G Focal Plane". United States. doi:10.1007/s10909-018-1935-y. https://www.osti.gov/servlets/purl/1438535.
@article{osti_1438535,
title = {Optical Characterization of the SPT-3G Focal Plane},
author = {Pan, Z. and et al.},
abstractNote = {The third-generation South Pole Telescope camera is designed to measure the cosmic microwave background across three frequency bands (95, 150 and 220 GHz) with ~16,000 transition-edge sensor (TES) bolometers. Each multichroic pixel on a detector wafer has a broadband sinuous antenna that couples power to six TESs, one for each of the three observing bands and both polarization directions, via lumped element filters. Ten detector wafers populate the focal plane, which is coupled to the sky via a large-aperture optical system. Here we present the frequency band characterization with Fourier transform spectroscopy, measurements of optical time constants, beam properties, and optical and polarization efficiencies of the focal plane. The detectors have frequency bands consistent with our simulations, and have high average optical efficiency which is 86%, 77% and 66% for the 95, 150 and 220 GHz detectors. The time constants of the detectors are mostly between 0.5 ms and 5 ms. The beam is round with the correct size, and the polarization efficiency is more than 90% for most of the bolometers},
doi = {10.1007/s10909-018-1935-y},
journal = {J.Low Temp.Phys.},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:

Works referenced in this record:

THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT
journal, December 2016

  • Thornton, R. J.; Ade, P. A. R.; Aiola, S.
  • The Astrophysical Journal Supplement Series, Vol. 227, Issue 2
  • DOI: 10.3847/1538-4365/227/2/21

Probing Inflation with CMB Polarization
conference, January 2009

  • Baumann, Daniel; Jackson, Mark G.; Adshead, Peter
  • CMB POLARIZATION WORKSHOP: THEORY AND FOREGROUNDS: CMBPol Mission Concept Study, AIP Conference Proceedings
  • DOI: 10.1063/1.3160885

Constraining neutrino masses by CMB experiments alone
journal, February 2005


Polarised interferometric spectrometry for the millimetre and submillimetre spectrum
journal, June 1970


Cosmology with the Sunyaev-Zel’dovich Effect
journal, September 2002


The Primordial Inflation Explorer (PIXIE): a nulling polarimeter for cosmic microwave background observations
journal, July 2011


Probing neutrino masses with CMB lensing extraction
journal, February 2006


Tuning SPT-3G Transition-Edge-Sensor Electrical Properties with a Four-Layer Ti–Au–Ti–Au Thin-Film Stack
journal, April 2018

  • Carter, F. W.; Ade, P. A. R.; Ahmed, Z.
  • Journal of Low Temperature Physics, Vol. 193, Issue 5-6
  • DOI: 10.1007/s10909-018-1910-7

Fabrication of Detector Arrays for the SPT-3G Receiver
journal, May 2018

  • Posada, C. M.; Ade, P. A. R.; Ahmed, Z.
  • Journal of Low Temperature Physics, Vol. 193, Issue 5-6
  • DOI: 10.1007/s10909-018-1924-1

Cosmological parameters from CMB and other data: A Monte Carlo approach
journal, November 2002


Integrated performance of a frequency domain multiplexing readout in the SPT-3G receiver
conference, July 2016

  • Bender, A. N.; Ade, P. A. R.; Anderson, A. J.
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2232146

The POLARBEAR CMB polarization experiment
conference, July 2010

  • Arnold, K.; Ade, P. A. R.; Anthony, A. E.
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.858314

BFORE: The B-mode Foreground Experiment
journal, December 2015

  • Niemack, Michael D.; Ade, Peter; de Bernardis, Francesco
  • Journal of Low Temperature Physics, Vol. 184, Issue 3-4
  • DOI: 10.1007/s10909-015-1395-6

SPT-3G: a next-generation cosmic microwave background polarization experiment on the South Pole telescope
conference, July 2014

  • Benson, B. A.; Ade, P. A. R.; Ahmed, Z.
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2057305

The 10 Meter South Pole Telescope
journal, May 2011

  • Carlstrom, J. E.; Ade, P. A. R.; Aird, K. A.
  • Publications of the Astronomical Society of the Pacific, Vol. 123, Issue 903
  • DOI: 10.1086/659879

Fabrication of large dual-polarized multichroic TES bolometer arrays for CMB measurements with the SPT-3G camera
journal, August 2015


BICEP3: a 95GHz refracting telescope for degree-scale CMB polarization
conference, August 2014

  • Ahmed, Z.; Amiri, M.; Benton, S. J.
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2057224

Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope
journal, June 2017

  • Ding, Junjia; Ade, P. A. R.; Anderson, A. J.
  • IEEE Transactions on Applied Superconductivity, Vol. 27, Issue 4
  • DOI: 10.1109/TASC.2016.2639378

Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers
journal, June 2018


    Works referencing / citing this record:

    Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers
    journal, June 2018


    SPT-3G: A Multichroic Receiver for the South Pole Telescope
    journal, July 2018

    • Anderson, A. J.; Ade, P. A. R.; Ahmed, Z.
    • Journal of Low Temperature Physics, Vol. 193, Issue 5-6
    • DOI: 10.1007/s10909-018-2007-z

    Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers
    journal, June 2018


    SPT-3G: A Multichroic Receiver for the South Pole Telescope
    journal, July 2018

    • Anderson, A. J.; Ade, P. A. R.; Ahmed, Z.
    • Journal of Low Temperature Physics, Vol. 193, Issue 5-6
    • DOI: 10.1007/s10909-018-2007-z