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TES-Based X-ray Microcalorimeter Performances Under AC Bias and FDM for Athena

  • H. Akamatsu*
  • , L. Gottardi
  • , C.P. de Vries
  • , J. S. Adams
  • , S. R. Bandler
  • , M. P. Bruijn
  • , J. A. Chervenak
  • , M. E. Eckart
  • , F. M. Finkbeiner
  • , J. R. Gao
  • , J. W. den Herder
  • , R. den Hartog
  • , H. Hoevers
  • , R. E. Kelley
  • , P. Khosropanah
  • , C. A. Kilbourne
  • , J. van der Kuur
  • , S. J. Lee
  • , A. J. van den Linden
  • , F. S. Porter
  • K. Ravensberg, J. E. Sadleir, S. J. Smith, T. Suzuki, E. J. Wassell, Mikko Kiviranta
*Corresponding author for this work
    • Netherlands Institute for Space Research (SRON)
    • National Aeronautics and Space Administration (NASA)

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Athena is a European X-ray observatory, scheduled for launch in ∼ 2028. Athena will employ a high-resolution imaging spectrometer called X-ray integral field unit (X-IFU), consisting of an array of ∼ 4000 transition edge sensor (TES) microcalorimeter pixels. For the readout of X-IFU, we are developing frequency domain multiplexing, which is the baseline readout system. In this paper, we report on the performance of a TES X-ray calorimeter array fabricated at Goddard Space Flight Center (GSFC) at MHz frequencies for the baseline of X-IFU detector. During single-pixel AC bias characterization, we measured X-ray energy resolutions (at 6 keV) of about 2.9 eV at both 2.3 and 3.7 MHz. Furthermore, in the multiplexing mode, we measured X-ray energy resolutions of about 2.9 eV at 1.3 and 1.7 MHz.

    Original languageEnglish
    Pages (from-to)436-442
    JournalJournal of Low Temperature Physics
    Volume184
    Issue number1-2
    DOIs
    Publication statusPublished - 1 Jul 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Athena
    • Frequency domain multiplexing
    • Transition edge sensors
    • X-ray microcalorimeter

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