A cryogenic imaging X-ray spectrometer for XEUS read out by frequency-division SQUID multiplexers

被引：4

作者：

de Korte, PAJ ^{[1
]}

van Baar, JJ ^{[1
]}

Baars, NHR ^{[1
]}

Bakker, FE ^{[1
]}

Tiest, WMB ^{[1
]}

Bruijn, MP ^{[1
]}

Germeau, A ^{[1
]}

Hoevers, HFC ^{[1
]}

Kiviranta, M ^{[1
]}

Krouwer, E ^{[1
]}

van der Kuur, J ^{[1
]}

Lubbers, MP ^{[1
]}

Mels, WA ^{[1
]}

Ridder, ML ^{[1
]}

Seppae, H ^{[1
]}

Wiegerink, RJ ^{[1
]}

机构：

[1] SRON, Natl Inst Space Res, NL-3584 CA Utrecht, Netherlands

来源：

HIGH-ENERGY DETECTORS IN ASTRONOMY | 2004年 / 5501卷

关键词：

cryogenic micro-calorimeters; transition-edge sensors (TES); SQUIDs; imaging X-ray spectrometer; X-ray astronomy; XEUS; frequency-domain multiplexing (FDM);

D O I：

10.1117/12.552933

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A micro-calorimeter array with superconducting transition-edge sensors read out by a SQUID-based frequency-domain multiplexer is under development for the X-ray imaging spectrometer on board ESA's X-ray Evolving Universe Spectroscopy (XEUS) mission. The XEUS requirements are 2 and 5 eV FWHM energy resolution for 2 and 7 keV X-rays, respectively. An array of 32 x 32 pixels with 250 micron square pixels is envisaged. SRON and MESA(+) have developed 5 x 5 imaging micro-calorimeter prototype arrays along a bulk micromachining and a surface micromachining route. The present state of array design and development with emphasis on pixel-to-pixel performance measurements of thermal and I-V characteristics, sensor noise and energy resolution are presented. SRON and VTT are developing frequency-domain multiplexing with SQUID current amplifiers to read out the 32 x 32 array. The concept for the frequency division multiplexing read-out will be presented and its performance characteristics discussed. Recent results of sensor operation under AC-bias (500 kHz) are presented.

引用

页码：167 / 176

页数：10

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