1. The SAFARI Detector System
- Author
-
Audley, Michael D., de Lange, Gert, Gao, Jian-Rong, Jackson, Brian D., Hijmering, Richard A., Ridder, Marcel L., Bruijn, Marcel P., Roelfsema, Peter R., Ade, Peter A. R., Withington, Stafford, Bradford, Charles M., and Trappe, Neal A.
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics - 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$\le2\times10^{-19}\rm\ W/\sqrt Hz$) 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., Comment: 7 pages, 3 figures, Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107080K (9 July 2018); (fixed typo in abstract)
- Published
- 2018
- Full Text
- View/download PDF