Article

Journal of Low Temperature Physics

, Volume 167, Issue 5, pp 652-657

Open Access This content is freely available online to anyone, anywhere at any time.

Low-Noise Readout of TES Detectors with Baseband Feedback Frequency Domain Multiplexing

  • R. den HartogAffiliated withSRON Netherlands Institute for Space Research Email author 
  • , M. D. AudleyAffiliated with
  • , J. BeyerAffiliated withPTB
  • , D. BoersmaAffiliated withSRON Netherlands Institute for Space Research
  • , M. BruijnAffiliated withSRON Netherlands Institute for Space Research
  • , L. GottardiAffiliated withSRON Netherlands Institute for Space Research
  • , H. HoeversAffiliated withSRON Netherlands Institute for Space Research
  • , R. HouAffiliated withSRON Netherlands Institute for Space Research
  • , G. KeizerAffiliated withSRON Netherlands Institute for Space Research
    • , P. KhosropanahAffiliated withSRON Netherlands Institute for Space Research
    • , M. KivirantaAffiliated withVTT
    • , P. de KorteAffiliated withSRON Netherlands Institute for Space Research
    • , J. van der KuurAffiliated withSRON Netherlands Institute for Space Research
    • , B.-J. van LeeuwenAffiliated withSRON Netherlands Institute for Space Research
    • , A. C. T. NieuwenhuizenAffiliated withSRON Netherlands Institute for Space Research
    • , P. van WindenAffiliated withSRON Netherlands Institute for Space Research

Abstract

SRON is developing an electronic read-out system for an array of transition edge sensors (TES) based on the techniques of frequency domain multiplexing (FDM) and base-band feedback (BBFB). The astronomical applications of our system are the read-out of soft X-ray micro-calorimeters in a potential instrument on the European X-ray mission-under-study Athena and far-IR bolometers for the SAFARI instrument on the Japanese mission SPICA. In this paper we demonstrate the simultaneous locking of up to 51 BBFB loops. While locked, the in-band read-out noise of the loops is shown to reach the \(\mbox{10~pA/}\sqrt{\mathrm{Hz}}\) level required for these missions.

Keywords

Transition edge sensors Multiplexed read-out Bolometers Microcalorimeters Frequency domain multiplexing