23 July 2014 The 160 TES bolometer read-out using FDM for SAFARI
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Abstract
For the read out of the Transition Edge Sensors (TES) bolometer arrays of the SAFARI instrument on the Japanese background-limited far-IR SPICA mission SRON is developing a Frequency Domain Multiplexing (FDM) read-out system. The next step after the successful demonstration of the read out of 38 TES bolometers using FDM was to demonstrate the FDM readout of the required 160 TES bolometers. Of the 160 LC filter and TES bolometer chains 151 have been connected and after cooldown 148 of the resonances could be identified. Although initial operation and locking of the pixels went smoothly the experiment revealed several complications. In this paper we describe the 160 pixel FDM set-up, show the results and discuss the issues faced during operation of the 160 pixel FDM experiment.
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R. A. Hijmering, R. A. Hijmering, R. H. den Hartog, R. H. den Hartog, A. J. van der Linden, A. J. van der Linden, M. Ridder, M. Ridder, M. P. Bruijn, M. P. Bruijn, J. van der Kuur, J. van der Kuur, B. J. van Leeuwen, B. J. van Leeuwen, P. van Winden, P. van Winden, B. Jackson, B. Jackson, } "The 160 TES bolometer read-out using FDM for SAFARI", Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91531E (23 July 2014); doi: 10.1117/12.2056510; https://doi.org/10.1117/12.2056510
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