Year: 2018
Type: conference-paper
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≤2×10-19 W/√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.
DOI: 10.1117/12.2313361
Authors: Michael D. Audley, Gert de Lange, Brian D. Jackson, Peter R. Roelfsema, Stafford Withington, Peter A. R. Ade, Charles M. Bradford, Neal A. Trappe, Marcel L. Ridder, Richard A. Hijmering, Jian-Rong Gao, Marcel P. Bruijn
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2865425420