SQUID Noise in a 176-Pixel FDM Demonstrator for the SAFARI Far-Infrared Spectrometer

被引：9
|
作者：
Audley, Michael D. [1 ]
Wang, Qian [1 ,2 ]
Hijmering, Richard A. [3 ]
Khosropanah, Pourya [3 ]
de Lange, Gert [1 ]
van der Linden, Anton J. [3 ]
Ridder, Marcel L. [3 ]
Taralli, Emanuele [3 ]
机构：
[1] SRON Netherlands Inst Space Res, Landleven 12, NL-9747 AD Groningen, Netherlands
[2] Univ Groningen, Kapteyn Astron Inst, Landleven 12, NL-9747 AD Groningen, Netherlands
[3] SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2020年 / 199卷 / 3-4期
关键词：
TES bolometer array; FDM readout; SAFARI; SQUID noise; READOUT;
D O I：
10.1007/s10909-020-02399-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We are developing the frequency-domain multiplexing (FDM) readout for the SAFARI far-infrared spectrometer on board the SPICA space observatory. Each readout channel comprises a set of similar to 160 TESs and LC filters and is read out with a SQUID preamplifier. Baseband feedback is applied to overcome the dynamic range limitations of the SQUID. We have carried out extensive characterization of a test readout system coupled to a 176-pixel TES bolometer array in order to understand and optimize the system. We present our latest measurements of this 176-pixel FDM demonstrator, focusing on the noise contribution from the SQUID.
引用
收藏
页码：723 / 729
页数：7
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