Noise Measurements of a Low-Noise Amplifier in the FDM Readout System for SAFARI

Journal article (2020)

Authors

Qian Wang Rijksuniversiteit Groningen, SRON Netherlands Institute for Space Research
Michael D. Audley SRON Netherlands Institute for Space Research
P. Khosropanah SRON Netherlands Institute for Space Research
Jan Van Der Kuur SRON Netherlands Institute for Space Research
Gert De Lange SRON Netherlands Institute for Space Research
A. Aminaei SRON Netherlands Institute for Space Research
Dick Boersma SRON Netherlands Institute for Space Research
F. Van Der Tak SRON Netherlands Institute for Space Research, Rijksuniversiteit Groningen
J.R. Gao SRON Netherlands Institute for Space Research, QN/Gao Lab
Research Group
QN/Gao Lab
Copyright: © 2020 Qian Wang, Michael D. Audley, Pourya Khosropanah, Jan van der Kuur, Gert de Lange, Amin Aminaei, Dick Boersma, Floris van der Tak, J.R. Gao
DOI
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https://doi.org/10.1007/s10909-019-02328-x
SQUID Low-noise amplifier Transition edge sensor Readout noise
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Published Date

2020

Language

English

Research Group

QN/Gao Lab

Abstract

The SPICA-SAFARI instrument requires extremely sensitive transition edge sensor (TES) arrays with a noise equivalent power of 2×10-19W/Hz and a readout system with an output noise that is dominated by the detector noise. It is essential to ensure the frequency domain multiplexing (FDM) readout system in SAFARI meets the noise requirement. The FDM system in SAFARI consists essentially of LC filters, a superconducting quantum interference device, a room-temperature low-noise amplifier (LNA), and a demultiplexer. Here we present a noise study of the LNA from a laboratory amplifier chain. We found the equivalent current and voltage noise of the LNA to be 5.4pA/Hz and 315pV/Hz, respectively, which are low enough to read out SAFARI’s TES arrays.