A TES development and test facility at Cardiff, and a solution to the optical saturation problem of superconducting bolometers

Cynthia L. Hunt, Philip Mauskopf, Adam L. Woodcraft

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

Abstract

The Astronomical Instrumentation Group at University of Cardiff is already a UK center for submillimetre bolometric detector testing. The next generation of submillimetre astronomical instrumentation will incorporate arrays of transition-edge sensor (TES) bolometers. With the recently expanded facilities and personnel, the University of Cardiff is poised to become a UK centre for TES development and testing. We have undertaken a coordinated programme to develop TES simulation and test capabilities. One aspect of the programme is to address the problem of saturation of TES bolometers at high optical loads. We have developed a "tunable-G" device, which can vary its thermal conductance whilst in operation. For infrastructure, several sub-Kelvin cryogenic test beds have been specifically designed to suit the requirements of testing submillimetre TES development bolometers. A description of our tunable-G device to solve the optical saturation problem will be given along with a description of the test facilities available at Cardiff.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ. Zmuidzinas, W.S. Holland, S. Withington
Pages852-856
Number of pages5
Volume5498
DOIs
StatePublished - 2004
Externally publishedYes
EventMillimeter and Submillimeter Detectors for Astronomy II - Glasgow, United Kingdom
Duration: Jun 23 2004Jun 25 2004

Other

OtherMillimeter and Submillimeter Detectors for Astronomy II
CountryUnited Kingdom
CityGlasgow
Period6/23/046/25/04

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Keywords

  • Bolometer
  • TES
  • Thermal conductance
  • Tunable-G

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hunt, C. L., Mauskopf, P., & Woodcraft, A. L. (2004). A TES development and test facility at Cardiff, and a solution to the optical saturation problem of superconducting bolometers. In J. Zmuidzinas, W. S. Holland, & S. Withington (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5498, pp. 852-856). [106] https://doi.org/10.1117/12.551496