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Developments of Highly Multiplexed, Multi-chroic Pixels for Balloon-Borne Platforms

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Abstract

We present our work to develop and characterize low thermal conductance bolometers that are part of sinuous antenna multi-chroic pixels (SAMP). We use longer, thinner and meandered bolometer legs to achieve 9 pW/K thermal conductance bolometers. We also discuss the development of inductor–capacitor chips operated at 4 K to extend the multiplexing factor of the frequency domain multiplexing to 105, an increase of 60% compared to the factor currently demonstrated for this readout system. This technology development is motivated by EBEX-IDS, a balloon-borne polarimeter designed to characterize the polarization of foregrounds and to detect the primordial gravity waves through their B-mode signature on the polarization of the cosmic microwave background. EBEX-IDS will operate 20,562 transition edge sensor bolometers spread over 7 frequency bands between 150 and 360 GHz. Balloon and satellite platforms enable observations at frequencies inaccessible from the ground and with higher instantaneous sensitivity. This development improves the readiness of the SAMP and frequency domain readout technologies for future satellite applications.

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Acknowledgements

The EBEX-IDS collaboration would like to thank the support from NASA (NNX17AH30G).

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Authors and Affiliations

  1. School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, 55455, USA

    F. Aubin, S. Hanany & K. Young

  2. Department of Physics, Columbia University, New York, NY, 10027, USA

    B. R. Johnson

  3. Department of Physics, University of California, Berkeley, Berkeley, CA, 94720, USA

    A. Lee, A. Suzuki & B. Westbrook

  4. Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA

    A. Suzuki

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  1. F. Aubin
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  2. S. Hanany
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  3. B. R. Johnson
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  4. A. Lee
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  5. A. Suzuki
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  6. B. Westbrook
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  7. K. Young
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Correspondence to F. Aubin.

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Aubin, F., Hanany, S., Johnson, B.R. et al. Developments of Highly Multiplexed, Multi-chroic Pixels for Balloon-Borne Platforms. J Low Temp Phys 193, 298–304 (2018). https://doi.org/10.1007/s10909-018-1877-4

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  • DOI: https://doi.org/10.1007/s10909-018-1877-4

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