Progress toward kilopixel arrays: 3.8 eV microcalorimeter resolution in 8-channel SQUID multiplexer

被引：30

作者：

Doriese, WB ^{[1
]}

Beall, JA ^{[1
]}

Duncan, WD ^{[1
]}

Ferreira, L ^{[1
]}

Hilton, GC ^{[1
]}

Irwin, KD ^{[1
]}

Reintsema, CD ^{[1
]}

Ullom, JN ^{[1
]}

Vale, LR ^{[1
]}

Xu, Y ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Boulder, CO 80305 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 559卷 / 02期

基金：

美国国家航空航天局;

关键词：

SQUID; multiplexer; time division; time domain; transition-edge sensor; microcalorimeter;

D O I：

10.1016/j.nima.2005.12.146

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

While multiplexed readout of large arrays of submillimeter-wave transition-edge sensors (TESs) has been successfully demonstrated, the development of multiplexed arrays of TES X-ray microcalorimeters is more challenging. Fast X-ray pulses place stringent demands on the multiplexer dynamic range and bandwidth. In this paper, we describe the ongoing development of a time-division multiplexer (TDM) intended specifically for X-ray microcalorimeters. We present data showing 3.74 +/- 0.12 eV resolution (FWHM), measured at 6 keV from a sub-150 mu s sensor in an 8-channel TDM. In addition, we calculate the number of detectors that can be multiplexed as a function of open-loop system bandwidth, amplifier noise, and detector time constant. We find that with achievable improvements, our architecture will allow readout of a square, kilopixel array of high-resolution microcalorimeters with time constants as low as 50 mu s. TDM is thus well-suited to the requirements of many proposed X-ray astronomy missions, including NASA's Constellation-X, ESA's XEUS, and ISAS/JAXA's NeXT. Published by Elsevier B.V.

引用

页码：808 / 810

页数：3

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