Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers

J. Ding, P. A.R. Ade, Z. Ahmed, A. J. Anderson, J. E. Austermann, J. S. Avva, R. Basu Thakur, A. N. Bender, B. A. Benson, J. E. Carlstrom, F. W. Carter, T. Cecil, C. L. Chang, J. F. Cliche, A. Cukierman, E. V. Denison, T. de Haan, R. Divan, M. A. Dobbs, D. DutcherW. Everett, A. Foster, R. N. Gannon, A. Gilbert, J. C. Groh, N. W. Halverson, A. H. Harke-Hosemann, N. L. Harrington, J. W. Henning, G. C. Hilton, W. L. Holzapfel, N. Huang, K. D. Irwin, O. B. Jeong, M. Jonas, T. Khaire, A. M. Kofman, M. Korman, D. Kubik, S. Kuhlmann, C. L. Kuo, A. T. Lee, A. E. Lowitz, S. S. Meyer, D. Michalik, C. S. Miller, J. Montgomery, A. Nadolski, T. Natoli, H. Nguyen, G. I. Noble, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. M. Posada, A. Rahlin, J. E. Ruhl, L. J. Saunders, J. T. Sayre, I. Shirley, E. Shirokoff, G. Smecher, J. A. Sobrin, L. Stan, A. A. Stark, K. T. Story, A. Suzuki, Q. Y. Tang, K. L. Thompson, C. Tucker, L. R. Vale, K. Vanderlinde, J. D. Vieira, G. Wang, N. Whitehorn, V. Yefremenko, K. W. Yoon, M. R. Young

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, we have measured the properties of membrane-suspended bolometer thermal links and microstrip transmission lines in the transition-edge sensor arrays for the third-generation camera for South Pole Telescope (SPT-3G). A promising technique for controlling the end point of the release etch that defines the thermal link has been developed. We have also evaluated the microstrip loss in our detectors by measuring the optical efficiency of detectors with different lengths of microstrip line. The loss tangent is sufficiently low for the use in multi-chronic pixels for cosmic microwave background instruments like SPT-3G.

Original languageEnglish (US)
Pages (from-to)712-719
Number of pages8
JournalJournal of Low Temperature Physics
Volume193
Issue number5-6
DOIs
StatePublished - Dec 1 2018

Keywords

  • Cosmic microwave background
  • Microstrip loss
  • South Pole Telescope
  • Transition-edge sensor
  • XeF etch

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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