A frequency domain multiplexed receiver for the South Pole Telescope

Martin Lueker, Bradford Benson, Lindsey Bleem, Clarence Chang, Hsiao Mei Cho, John Clarke, Abigail Crites, Thomas Crawford, Matt Dobbs, William Holzapfel, Trevor Lanting, Adrian Lee, Jared Mehl, Thomas Plagge, Erik Shirokoff, Helmuth Spieler, Joaquin Vieira

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The South Pole Telescope (SPT), like its precursor experiment APEX-SZ,makes mm-wavelength observations of the Cosmic Microwave Background (CMB). Both of these experiments utilize large-scale bolometer arrays with Frequency-Domain Multiplexing to read out multiple TES bolometers with one SQUID. Though Frequency-Domain Mutltiplexing was successfully demonstrated well before the deployment of the SPT, there were many system level details that needed to be dealt with when transitioning from a small-scale "proof-of-principle" system to a full kilo-pixel array that has to operate reliably in the field. These changes vary in scope from the thermal design of the bolometers themselves, to the SQUID feedback electronics and the software used to operate these electronics. In this paper we describe some of the systems-engineering details involved in building a multiplexed instrument such as the SPT receiver.

Original languageEnglish (US)
Title of host publicationLow Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop
Number of pages4
StatePublished - 2009
Externally publishedYes
Event13th International Workshop on Low Temperature Detectors, LTD-13 - Stanford, CA, United States
Duration: Jul 20 2009Jul 24 2009

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other13th International Workshop on Low Temperature Detectors, LTD-13
Country/TerritoryUnited States
CityStanford, CA


  • Bolometer
  • Multiplexing
  • Systems-engineering
  • Transition-edge

ASJC Scopus subject areas

  • General Physics and Astronomy


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