SQUID-based readout schemes for microcalorimeter arrays

Mikko Kiviranta, Heikki Seppä, Jan van der Kuur, Piet de Korte

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    Microcalorimeter arrays with superconducting phase-transition thermometers are an attractive alternative for construction of imaging X-ray spectrometers. The low source impedance and low operating temperatures make dc SQUIDs good candidates for their preamplifiers. In large arrays, the circuit complexity as well as heat leakage through wiring make some sort of a multiplexing scheme desirable. Some circuit topologies for time-domain and frequency-domain multiplexing schemes are compared. One particular frequency-domain multiplexing circuit, being developed for the XEUS space mission, is reviewed in more detail. The design issues related with dynamic range, bandwidth and noise folding are discussed.
    Original languageEnglish
    Title of host publicationLow Temperature Detectors
    Subtitle of host publication9th International Workshop
    PublisherAmerican Institute of Physics (AIP)
    ISBN (Print)978-0-7354-0049-8
    Publication statusPublished - 2002
    MoE publication typeA4 Article in a conference publication
    Event9th International Workshop on Low Temperature Detectors, LTD-9 - Madison, United States
    Duration: 22 Jul 200127 Jul 2001

    Publication series

    SeriesAIP Conference Proceedings


    Conference9th International Workshop on Low Temperature Detectors, LTD-9
    Country/TerritoryUnited States


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