Frequency domain multiplexing readout for large arrays of transition-edge sensors

• Published in: arXiv.org
• Main Authors: Vaccaro, Davide, Akamatsu, Hiroki, Gottardi, Luciano, van der Kuur, Jan, Nagayoshi, Kenichiro, Taralli, Emanuele, de Wit, Martin, Bruijn, Marcel P, Anton J van der Linden, Bert-Joost van Leeuwen, van der Hulst, Paul, Ravensberg, Kevin, de Vries, Cor P, Kiviranta, Mikko, Jian-Rong Gao, den Herder, Jan-Willem A
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 26.08.2022
• Subjects: Digital electronics; Energy resolution; Frequency division multiplexing; Frequency domain analysis; Physics - Instrumentation and Detectors; Physics - Instrumentation and Methods for Astrophysics; Sensor arrays; X ray telescopes
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2208.12604

We report our most recent progress and demonstration of a frequency domain multiplexing (FDM) readout technology for transition-edge sensor (TES) arrays, both of which we have been developing, in the framework of the X-IFU instrument on board the future Athena X-ray telescope. Using Ti/Au TES micro-calorimeters, high-Q LC filters and analog/digital electronics developed at SRON and low-noise two-stage SQUID amplifiers from VTT Finland, we demonstrated feasibility of our FDM readout technology, with the simultaneous readout of 37 pixels with an energy resolution at of 2.23 eV at an energy of 6 keV. We finally outline our plans for further scaling up and improving our technology.