The SAFARI detector system

Conference paper (2018)

Authors

Michael D. Audley SRON Netherlands Institute for Space Research
Gert De Lange SRON Netherlands Institute for Space Research
Charles M. Bradford Jet Propulsion Lab, Pasadena, CA
Neal A. Trappe Maynooth University
J.R. Gao QN/Gao Lab , SRON Netherlands Institute for Space Research
BD Jackson SRON Netherlands Institute for Space Research
R. A. Hijmering SRON Netherlands Institute for Space Research
M. L. Ridder SRON Netherlands Institute for Space Research
Marcel P. Bruijn SRON Netherlands Institute for Space Research
Peter R. Roelfsema SRON Netherlands Institute for Space Research
Peter A.R. Ade Cardiff University
Stafford Withington University of Cambridge
Research Group
QN/Gao Lab
SAFARI Far-Infrared Bolometer Array Far-Infrared Spectrometer Focal-Plane Array Frequency Domain Multiplexing Infrared Space Observatory SPICA Transition Edge Sensor
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Published Date

2018

Language

English

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Research Group

QN/Gao Lab

Abstract

We give an overview of the baseline detector system for SAFARI, the prime focal-plane instrument on board the proposed space infrared observatory, SPICA. SAFARI's detectors are based on superconducting Transition Edge Sensors (TES) to provide the extreme sensitivity (dark NEP≤2×10-19W/√Hz) needed to take advantage of SPICA's cold (<8 K) telescope. In order to read out the total of ∼3500 detectors we use frequency domain multiplexing (FDM) with baseband feedback. In each multiplexing channel, a two-stage SQUID preamplifier reads out 160 detectors. We describe the detector system and discuss some of the considerations that informed its design.

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