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

Journal Article (2020)
Author(s)

Qian Wang (SRON–Netherlands Institute for Space Research, Rijksuniversiteit Groningen)

M. 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)

Floris F.S. Van der Tak (Rijksuniversiteit Groningen, SRON–Netherlands Institute for Space Research)

J.R. Gao (SRON–Netherlands Institute for Space Research, TU Delft - 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 related publication
https://doi.org/10.1007/s10909-019-02328-x
More Info
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Publication Year
2020
Language
English
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
Research Group
QN/Gao Lab
Issue number
3-4
Volume number
199
Pages (from-to)
817-823
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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.