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SQUID Noise in a 176-Pixel FDM Demonstrator for the SAFARI Far-Infrared Spectrometer

Audley, M. D., Wang, Q., Hijmering, R. A., Khosropanah, P., de Lange, G., van der Linden, A. J., Ridder, M. L. & Taralli, E., May-2020, In : Journal of Low Temperature Physics. 199, 3-4, p. 723-729 7 p.

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  • SQUID Noise in a 176-Pixel FDM Demonstrator for the SAFARI Far-Infrared Spectrometer

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DOI

We are developing the frequency-domain multiplexing (FDM) readout for the SAFARI far-infrared spectrometer on board the SPICA space observatory. Each readout channel comprises a set of ~ 160 TESs and LC filters and is read out with a SQUID preamplifier. Baseband feedback is applied to overcome the dynamic range limitations of the SQUID. We have carried out extensive characterization of a test readout system coupled to a 176-pixel TES bolometer array in order to understand and optimize the system. We present our latest measurements of this 176-pixel FDM demonstrator, focusing on the noise contribution from the SQUID.

Original languageEnglish
Pages (from-to)723-729
Number of pages7
JournalJournal of Low Temperature Physics
Volume199
Issue number3-4
Publication statusPublished - May-2020

    Keywords

  • TES bolometer array, FDM readout, SAFARI, SQUID noise, READOUT

ID: 128078104