The south pole telescope sz-receiver detectors

Erik Shirokoff, Bradford A. Benson, Lindsey E. Bleem, Clarence L. Chang, Hsiao Mei Cho, Abigail T. Crites, Matt A. Dobbs, William L. Holzapfel, Trevor Lanting, Adrian T. Lee, Martin Lueker, Jared Mehl, Thomas Plagge, Helmuth G. Spieler, Joaquin D. Vieira

Research output: Contribution to journalArticlepeer-review

Abstract

We will discuss the design, fabrication, and testing of a 960-element TES array installed on the new 10 meter South Pole Telescope (SPT). This array is designed to survey for galaxy clusters using the Sunyaev-Zel'dovich (SZ) effect, which is the in- verse-Compton scattering of Cosmic Microwave Background photons by plasma bound to clusters of galaxies. The SPT bolometer array consists of fully lithographed spider-web absorbers fabricated on adhesive-bonded silicon wafers with an embedded metal back plane. The absorbers are connected to aluminum-titanium bilayer TESs with a transition temperature of approximately 550 mK. Additional normal-metal features adjust the devices' thermal properties to suit our readout system and observational strategy. The focal plane is cooled using a commercial, closed cycle, pulse-tube refrigerator and a three-stage helium sorption refrigerator with a 250 mK base temperature.

Original languageEnglish (US)
Article number5153019
Pages (from-to)517-519
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Volume19
Issue number3
DOIs
StatePublished - Jun 2009
Externally publishedYes

Keywords

  • Bolometers
  • Superconducting devices
  • Transition edge sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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