1. Susceptibility study of TES micro-calorimeters for X-ray spectroscopy under FDM readout
- Author
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Vaccaro, Davide, Akamatsu, Hiroki, Gottardi, Luciano, van der Kuur, Jan, Taralli, Emanuele, de Wit, Martin, Bruijn, Marcel P., Hartog, Roland den, Kiviranta, Mikko, van der Linden, Anton J., Nagayoshi, Kenichiro, Ravensberg, Kevin, Ridder, Marcel L., Visser, Sven, Jackson, Brian D., Gao, Jian-Rong, Hoogeveen, Ruud W. M., and Herder, Jan-Willem A. den
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
We present a characterization of the sensitivity of TES X-ray micro-calorimeters to environmental conditions under frequency-domain multiplexing (FDM) readout. In the FDM scheme, each TES in a readout chain is in series with a LC band-pass filter and AC biased with an independent carrier at MHz range. Using TES arrays, cold readout circuitry and warm electronics fabricated at SRON and SQUIDs produced at VTT Finland, we characterize the sensitivity of the detectors to bias voltage, bath temperature and magnetic field. We compare our results with the requirements for the Athena X-IFU instrument, showing the compliance of the measured sensitivities. We find in particular that FDM is intrinsically insensitive to the magnetic field because of TES design and AC readout., Comment: This paper has been accepted for publication in Journal of Low Temperature Physics
- Published
- 2022
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