Progress on frequency domain multiplexed readout of TES bolometers with sub-kelvin SQUID operation

Tucker Elleflot; Aritoki Suzuki; Chris Bebek; Kevin Crowley; Tijmen de Haan; John Groh; John Joseph; Adrian Lee; Joshua Montgomery

doi:10.1117/12.2561850

13 December 2020 Progress on frequency domain multiplexed readout of TES bolometers with sub-kelvin SQUID operation

Tucker Elleflot, Aritoki Suzuki, Chris Bebek, Kevin Crowley, Tijmen de Haan, John Groh, John Joseph, Adrian Lee, Joshua Montgomery

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 114531R (2020) https://doi.org/10.1117/12.2561850
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

Digital Frequency Domain Multiplexing (DfMux) is a method of biasing and reading out many TES bolometers using superconducting MHz resonators and a SQUID amplifier. DfMux was recently deployed in two Cosmic Microwave Background receivers and is an alternative and baseline readout technology for CMB-S4 and LiteBIRD, respectively. The next generation of DfMux puts the SQUID,TES bias element, and resonators onto a common carrier at 100 mK in order to relax requirements on cryogenic wiring and allow for an increased multiplexing factor and improved TES performance. Characterization of a prototype system that is compatible with the POLARBEAR-2 receivers is presented.

Citation Download Citation

Tucker Elleflot, Aritoki Suzuki, Chris Bebek, Kevin Crowley, Tijmen de Haan, John Groh, John Joseph, Adrian Lee, and Joshua Montgomery "Progress on frequency domain multiplexed readout of TES bolometers with sub-kelvin SQUID operation", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114531R (13 December 2020); https://doi.org/10.1117/12.2561850

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