24 September 2012 Frequency division multiplexed readout of TES detectors with baseband feedback
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Abstract
SRON is developing an electronic system for the multiplexed read-out of an array of transition edge sensors (TES) by combining the techniques of frequency domain multiplexing (FDM) with base-band feedback (BBFB). The astronomical applications are the read-out of soft X-ray microcalorimeters and the far-infrared bolometers for the SAFARI instrument on the Japanese mission SPICA. In this paper we derive the requirements for the read-out system regarding noise and dynamic range in the context of the SAFARI instrument, and demonstrate that the current experimental prototype is capable of simultaneously locking 57 channels and complies with these requirements.
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R. den Hartog, M. D. Audley, J. Beyer, M. P. Bruijn, P. de Korte, L. Gottardi, R. Hijmering, B. Jackson, A. Nieuwenhuizen, J. van der Kuur, B.-J. van Leeuwen, D. Van Loon, "Frequency division multiplexed readout of TES detectors with baseband feedback", Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84520F (24 September 2012); doi: 10.1117/12.925741; https://doi.org/10.1117/12.925741
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