Development of mm-wave sensors for measurements of the Cosmic Microwave Background

ORAL

Abstract

In the process of developing superconducting sensor technology for the next generation of Cosmic Microwave Background (CMB) experiments, we have been working on a design that couples the CMB signal from a microstrip antenna to transition edge sensors (TES). In our detector design, the signal from the microstrip antenna is split into passbands centered at 95 GHz, 150 GHz and 220 GHz [1,2], and is then routed to different transition edge sensors. Making this possible in a compact topology requires crossover structures that isolate the high frequency superconducting lines from each other. Here, we will discuss the design optimization that replaces these superconducting cross-over structures with ground layer embedded cross-under structures. This change reduces the number of required depositions and circumvents liftoff issues associated with cross-over structures. In doing so, we had to ensure no cross talk in the high frequency lines, confirmed by HFSS simulation results. [1] C. M. Posada et al., Supercond. Sci. Technol. 28, 94002 (2015), [2] J. Ding et al., IEEE Trans. Appl. Supercond. 27, 2100204 (2017)

*This work was supported by BES-DOE Grant DE-AC02-06CH11357

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Presenters

  • Steve Padin

    • Argonne Natl Lab
    • University of Chicago
    • Argonne National Laboratory

Authors

  • Trupti Khaire

    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Faustin Carter

    • High Energy Physics, Argonne National Laboratory

  • Evan Mayer

    • University of Chicago

  • Junjia Ding

    • Materials Science Division, Argonne National Laboratory

  • Chrystian Posada

    • Argonne Natl Lab
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Volodymyr Yefremenko

    • Argonne Natl Lab
    • High Energy Physics, Argonne National Laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Steve Padin

    • Argonne Natl Lab
    • University of Chicago
    • Argonne National Laboratory

  • John Carlstrom

    • Kavli Institute for Cosmological Physics, University of Chicago

  • Clarence Chang

    • Argonne Natl Lab
    • Kavli Institute for Cosmological Physics, University of Chicago
    • Argonne National Laboratory

  • Valentyn Novosad

    • Argonne Natl Lab
    • Materials Science Division, Physics Division, Argonne National Laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory