Demonstration of MHz frequency domain multiplexing readout of 37 transition edge sensors for high-resolution x-ray imaging spectrometers

Journal article (2021)

Authors

H. Akamatsu SRON–Netherlands Institute for Space Research
D. Vaccaro SRON–Netherlands Institute for Space Research
L Gottardi SRON–Netherlands Institute for Space Research
J. Van Der Kuur SRON–Netherlands Institute for Space Research
C. P. De Vries SRON–Netherlands Institute for Space Research
M. Kiviranta VTT Technical Research Center of Finland
K. Ravensberg SRON–Netherlands Institute for Space Research
M. D'Andrea SRON–Netherlands Institute for Space Research
J.R. Gao SRON–Netherlands Institute for Space Research
More Authors... External organisation
Affiliation
External organisation
More Info
expand_more

Published Date

2021

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

Abstract

We report on the development and demonstration of MHz frequency domain multiplexing (FDM) technology to readout arrays of cryogenic transition edge sensor (TES) x-ray microcalorimeters. In our FDM scheme, TESs are AC biased at different resonant frequencies in the low MHz range through an array of high-Q LC resonators. The current signals of all TESs are summed at superconducting quantum interference devices (SQUIDs). We have demonstrated multiplexing for a readout of 31 pixels using room temperature electronics, high-Q LC filters, and TES arrays developed at SRON, and SQUID arrays from VTT. We repeated this on a second setup with 37 pixels. The summed x-ray spectral resolutions @ 5.9 keV are Δ E 31 pix MUX = 2.14 ± 0.03 eV and Δ E 37 pix MUX = 2.23 ± 0.03 eV. The demonstrated results are comparable with other multiplexing approaches. There is potential to further improve the spectral resolution, to increase the number of multiplexed TESs, and to open up applications for TES x-ray microcalorimeters.