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Impedance Matching Between SQUID and Warm Amplifier for TES Readout in TDM for the ATHENA X-IFU Instrument

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Abstract

Current cryogenic instruments require an increasingly high number of superconducting detectors. Large multiplexing factors are thus needed, increasing the bandwidth of the readout signals. In the specific case of transition edge sensors (TES), a cold amplification stage using superconducting quantum interference devices is usually coupled to a room temperature low-noise amplifier (LNA). A resistive harness up to a few meters long connects these two stages carrying signals with bandwidth of up to a few tens of MHz. In this context, it is reasonable to consider the possibility of impedance matching at the input of the LNA. In this paper, we present the impact of such impedance matching for the ATHENA X-IFU instrument, which uses TES in time-division multiplexing (Barret in Exp Astron 55:373–426 2023).

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Author notes

  1. Yann Parot, Damien Prele, Christian Kirsch, Edoardo Cucchetti, Philippe Peille, David Murat, Laurent Ravera, and Jan Van der Kuur have contributed equally to this work.

Authors and Affiliations

  1. Astroparticule et Cosmologie, Université Paris Cité, CNRS, Paris, France

    Manuel Gonzalez & Damien Prele

  2. Institut de Recherche en Astrophysique et Planétologie, CNRS, Toulouse, France

    Yann Parot, David Murat & Laurent Ravera

  3. Dr. Karl Remeis-Observatory & ECAP, FAU Erlangen-Nürnberg, Erlangen, Germany

    Christian Kirsch

  4. Centre National d’Etudes Spatiales, Toulouse, France

    Edoardo Cucchetti & Philippe Peille

  5. SRON Netherlands Institute for Space Research, Leiden, The Netherlands

    Jan Van der Kuur

Authors
  1. Manuel Gonzalez
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  2. Yann Parot
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  8. Laurent Ravera
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  9. Jan Van der Kuur
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Contributions

MG wrote the main manuscript text. MG, YP and DP performed simulations and measurements presented in Figs. 1, 2, 3, 4 and 5. CK, EC and PP contributed to the numerical methods, overall setup and interpretation of the simulations. JK provided the characterization of the SQUIDs presented in Fig. 1 and helped with the interpretation of the results. DM and LR gave insightful advice about the models and contributed to the original idea. All the authors have participated in extensive discussions about the results presented in the paper and reviewed the manuscript.

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Correspondence to Manuel Gonzalez.

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Gonzalez, M., Parot, Y., Prele, D. et al. Impedance Matching Between SQUID and Warm Amplifier for TES Readout in TDM for the ATHENA X-IFU Instrument. J Low Temp Phys 215, 201–208 (2024). https://doi.org/10.1007/s10909-024-03085-2

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