Toward Large Field-of-View High-Resolution X-ray Imaging Spectrometers: Microwave Multiplexed Readout of 28 TES Microcalorimeters

被引：12

作者：

Yoon, W. ^{[1
,2
]}

Adams, J. S. ^{[1
,3
]}

Bandler, S. R. ^{[1
]}

Becker, D. ^{[4
]}

Bennett, D. A. ^{[4
]}

Chervenak, J. A. ^{[1
]}

Datesman, A. M. ^{[1
,5
]}

Eckart, M. E. ^{[1
]}

Finkbeiner, F. M. ^{[1
,6
]}

Fowler, J. W. ^{[4
]}

Gard, J. D. ^{[4
]}

Hilton, G. C. ^{[4
]}

Kelley, R. L. ^{[1
]}

Kilbourne, C. A. ^{[1
]}

Mates, J. A. B. ^{[4
]}

Miniussi, A. R. ^{[1
,3
]}

Moseley, S. H. ^{[1
]}

Noroozian, O. ^{[1
,7
,8
]}

Porter, F. S. ^{[1
]}

Reintsema, C. D. ^{[4
]}

Sadleir, J. E. ^{[1
]}

Sakai, K. ^{[1
,3
]}

Smith, S. J. ^{[1
,3
]}

Stevenson, T. R. ^{[1
]}

Swetz, D. S. ^{[4
]}

Ullom, J. N. ^{[4
]}

Vale, L. R. ^{[4
]}

Wakeham, N. A. ^{[1
,2
]}

Wassell, E. J. ^{[1
,5
]}

Wollack, E. J. ^{[1
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] NASA, Postdoctoral Program, Univ Space Res Assoc, Greenbelt, MD 20771 USA

[3] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA

[4] NIST, Boulder, CO 80305 USA

[5] SGT Inc, Greenbelt, MD 20706 USA

[6] Wyle Informat Syst, Mclean, VA 22102 USA

[7] Natl Radio Astron Observ, Edgemont Rd, Charlottesville, VA 22903 USA

[8] Univ Virginia, Charlottesville, VA 22903 USA

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2018年 / 193卷 / 3-4期

关键词：

Microwave multiplexing; Flux ramp; Transition-edge sensor; X-ray spectrometer; Microcalorimeter;

D O I：

10.1007/s10909-018-1917-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We performed small-scale demonstrations at GSFC of high-resolution X-ray TES microcalorimeters read out using a microwave SQUID multiplexer. This work is part of our effort to develop detector and readout technologies for future space-based X-ray instruments such as the microcalorimeter spectrometer envisaged for Lynx, a large mission concept under development for the Astro 2020 Decadal Survey. In this paper we describe our experiment, including details of a recently designed, microwave-optimized low-temperature setup that is thermally anchored to the 55mK stage of our laboratory ADR. Using a ROACH2 FPGA at room temperature, we read out pixels of a GSFC-built detector array via a NIST-built multiplexer chip with Nb coplanar waveguide resonators coupled to rf-SQUIDs. The resonators are spaced 6MHz apart (at In our initial demonstration, we used flux-ramp modulation frequencies of 125kHz to read out 5 pixels simultaneously and achieved spectral resolutions of 2.8-3.1eV FWHM at 5.9keV. Our subsequent work is ongoing: to-date we have achieved a median spectral resolution of 3.4 eVFWHM at 5.9keV while reading out 28 pixels simultaneously with flux-ramp frequencies of 160kHz. We present the measured system-level noise and maximum slew rates and briefly describe our future development work.

引用

页码：258 / 266

页数：9

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