Measurements of bolometer uniformity for feedhorn coupled TES polarimeters

J. E. Austermann, M. D. Niemack, J. W. Appel, J. A. Beall, D. Becker, D. A. Bennett, B. A. Benson, L. E. Bleem, J. Britton, J. E. Carlstrom, C. L. Chang, H. M. Cho, A. T. Crites, T. Essinger-Hileman, W. Everett, N. W. Halverson, J. W. Henning, G. C. Hilton, K. D. Irwin, J. McMahonJ. Mehl, S. S. Meyer, L. P. Parker, S. M. Simon, S. T. Staggs, J. N. Ullom, C. Visnjic, K. W. Yoon, Y. Zhao

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

7 Scopus citations

Abstract

We are developing feedhorn-coupled TES polarimeters to measure the polarization anisotropies of the cosmic microwave background (CMB) radiation. These devices will be deployed in arrays of hundreds to thousands and will be measured using multiplexed SQUID readout electronics. Since multiplexed devices share common circuitry, a high degree of uniformity is required in the electrothermal properties of the TES bolometers and readout circuits in order to operate all channels simultaneously with high sensitivity. Our cryogenic test bed can probe dozens of devices simultaneously, thus providing useful detector statistics on relatively short time scales. We describe the TES bolometer design and present dark (no optical loading) measurements of the electrical and thermal properties and uniformity of prototype bolometers across two 3-inch diameter production wafers, including (standard deviation in parenthesis): TES transition temperature (∼ 1%), normal resistance (∼ 10%), thermal conductance (≲ 10%), time constant (∼ 20%), shunt resistance (≲; 5%), and noise properties.

Original languageEnglish (US)
Title of host publicationLow Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop
Pages498-501
Number of pages4
DOIs
StatePublished - 2009
Event13th International Workshop on Low Temperature Detectors, LTD-13 - Stanford, CA, United States
Duration: Jul 20 2009Jul 24 2009

Publication series

NameAIP Conference Proceedings
Volume1185
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other13th International Workshop on Low Temperature Detectors, LTD-13
CountryUnited States
CityStanford, CA
Period7/20/097/24/09

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Bolometer
  • Cosmology
  • Detector array
  • Polarimeter
  • TES

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