Progress in the Development of Frequency-Domain Multiplexing for the X-ray Integral Field Unit on Board the Athena Mission

被引：15

作者：

Akamatsu, H. ^{[1
]}

Gottardi, L. ^{[1
]}

van der Kuur, J. ^{[2
]}

de Vries, C. P. ^{[1
]}

Bruijn, M. P. ^{[1
]}

Chervenak, J. A. ^{[3
]}

Kiviranta, M. ^{[4
]}

van den Linden, A. J. ^{[1
]}

Jackson, B. D. ^{[1
,2
]}

Miniussi, A. ^{[3
]}

Ravensberg, K. ^{[1
]}

Sakai, K. ^{[3
]}

Smith, S. J. ^{[3
]}

Wakeham, N. ^{[3
]}

机构：

[1] SRON Netherlands Inst Space Res, Utrecht, Netherlands

[2] SRON Groningen Netherlands Inst Space Res, Groningen, Netherlands

[3] NASA GSFC, Greenbelt Rd, Greenbelt, MD 20771 USA

[4] VTT, Espoo, Finland

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2020年 / 199卷 / 3-4期

关键词：

Transition-edge sensors; X-ray calorimeters; X-ray astronomy; Athena; X-IFU; TES; MICROCALORIMETERS; PERFORMANCE; READOUT; FILTERS;

D O I：

10.1007/s10909-020-02351-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Frequency-domain multiplexing (FDM) is the baseline readout system for the X-ray Integral Field Unit on board the Athena mission. Under the FDM scheme, TESs are coupled to a passive LC filter and biased with alternating current (AC bias) at MHz frequencies. Using high-quality-factor LC filters and room-temperature electronics developed at SRON and low-noise two-stage SQUID amplifiers provided by VTT, we have recently demonstrated good performance with the FDM readout of Mo/Au TES calorimeters with Au/Bi absorbers. We have achieved a performance requested for the demonstration model with the single-pixel AC bias (Delta E=1.8eV) and nine-pixel multiplexing (Delta E=2.6eV) modes. We have also demonstrated 14-pixel multiplexing with an average energy resolution of 3.3 eV, which is limited by nonfundamental issues related to FDM readout in our laboratory setup.

引用

页码：737 / 744

页数：8

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