AC biased TES-based X-ray microcalorimeter with an energy resolution of 6.3 eV at 5.89 keV

J. van der Kuur, P.A.J. de Korte, H.F.C. Hoevers, W.M.B. Tiest, N.H.R. Baars, M.L. Ridder, E. Krouwer, M.P. Bruijn, Mikko Kiviranta, Heikki Seppä

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)


    Frequency domain multiplexing (FDM) is an attractive option for the readout of imaging arrays of microcalorimeters. The most straightforward implementation of FDM is based on alternating voltage (AC) biasing of the individual microcalorimeters. It is clear that for future applications the performance in terms of energy resolution and count rate capability is crucial. We discuss the consequences of AC bias for the performance of a microcalorimeter, and make a direct experimental comparison between the performance of a TES based microcalorimeter AC and DC bias. Modeling, as well as experiments, show that the performance of the device is is very similar in terms of energy resolution and pulse shapes (100 /spl mu/s effective time constant). The measured energy resolution at 5.89 keV photon energy is 6.3 eV for AC bias at 46 kHz and 5.5 eV for DC bias.
    Original languageEnglish
    Pages (from-to)638-642
    Number of pages5
    JournalIEEE Transactions on Applied Superconductivity
    Issue number2
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed


    • X-ray detection
    • X-ray imaging
    • frequency division multiplexing
    • FDM
    • particle calorimetry
    • calorimeters
    • readout electronics
    • superconducting arrays
    • superconducting particle detectors
    • frequency domain multiplexing
    • pulse shape
    • superconducting transition edge sensor


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