Optimising the multiplex factor of the frequency domain multiplexed readout of the TES-based microcalorimeter imaging array for the X-IFU instrument on the Athena Xray observatory

Jan van der Kuur, L.G. Gottardi, Hiroki Akamatsu, B.J. van Leeuwen, Roland den Hartog, D. Haas, Mikko Kiviranta, Brian J. Jackson

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

    15 Citations (Scopus)

    Abstract

    Athena is a space-based X-ray observatory intended for exploration of the hot and energetic universe. One of the science instruments on Athena will be the X-ray Integrated Field Unit (X-IFU), which is a cryogenic X-ray spectrometer, based on a large cryogenic imaging array of Transition Edge Sensors (TES) based microcalorimeters operating at a temperature of 100mK. The imaging array consists of 3800 pixels providing 2.5 eV spectral resolution, and covers a field of view with a diameter of of 5 arc minutes. Multiplexed readout of the cryogenic microcalorimeter array is essential to comply with the cooling power and complexity constraints on a space craft. Frequency domain multiplexing has been under development for the readout of TES-based detectors for this purpose, not only for the X-IFU detector arrays but also for TES-based bolometer arrays for the Safari instrument of the Japanese SPICA observatory. This paper discusses the design considerations which are applicable to optimise the multiplex factor within the boundary conditions as set by the space craft. More specifically, the interplay between the science requirements such as pixel dynamic range, pixel speed, and cross talk, and the space craft requirements such as the power dissipation budget, available bandwidth, and electromagnetic compatibility will be discussed.
    Original languageEnglish
    Title of host publicationSpace Telescopes and Instrumentation 2016
    Subtitle of host publicationUltraviolet to Gamma Ray
    EditorsJan-Willem den Herder, Tadayuki Takahashi, Marshall Bautz
    PublisherInternational Society for Optics and Photonics SPIE
    ISBN (Print)978-151-06018-7-1
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA4 Article in a conference publication
    EventSPIE Astronomical Telescopes and Instrumentation - Edinburgh, United Kingdom
    Duration: 26 Jun 20161 Jul 2016

    Publication series

    SeriesProceedings of SPIE
    Volume9905
    ISSN0277-786X

    Conference

    ConferenceSPIE Astronomical Telescopes and Instrumentation
    Country/TerritoryUnited Kingdom
    CityEdinburgh
    Period26/06/161/07/16

    Keywords

    • Athena
    • frequency domain multiplexing
    • readout
    • TES
    • X-IFU
    • OtaNano

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