A high resolution gamma-ray spectrometer based on superconducting microcalorimeters

被引：80
作者：
Bennett, D. A. [1 ,2 ]
Horansky, R. D. [1 ,2 ]
Schmidt, D. R. [1 ,3 ]
Hoover, A. S. [4 ]
Winkler, R. [4 ]
Alpert, B. K. [1 ]
Beall, J. A. [1 ]
Doriese, W. B. [1 ,3 ]
Fowler, J. W. [1 ,3 ]
Fitzgerald, C. P. [1 ]
Hilton, G. C. [1 ]
Irwin, K. D. [1 ]
Kotsubo, V. [1 ,3 ]
Mates, J. A. B. [1 ,3 ]
O'Neil, G. C. [1 ]
Rabin, M. W. [4 ]
Reintsema, C. D. [1 ]
Schima, F. J. [1 ]
Swetz, D. S. [1 ]
Vale, L. R. [1 ]
Ullom, J. N. [1 ]
机构：
[1] NIST, Boulder, CO 80305 USA
[2] Univ Denver, Denver, CO 80208 USA
[3] Univ Colorado, Boulder, CO 80309 USA
[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 09期
关键词：
TRANSITION-EDGE SENSORS; ENERGY-RESOLUTION; X-RAY; DETECTORS; ARRAYS; SPECTROSCOPY; NOISE;
D O I：
10.1063/1.4754630
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Improvements in superconductor device fabrication, detector hybridization techniques, and superconducting quantum interference device readout have made square-centimeter-sized arrays of gammaray microcalorimeters, based on transition-edge sensors (TESs), possible. At these collecting areas, gamma microcalorimeters can utilize their unprecedented energy resolution to perform spectroscopy in a number of applications that are limited by closely-spaced spectral peaks, for example, the non-destructive analysis of nuclear materials. We have built a 256 pixel spectrometer with an average full-width-at-half-maximum energy resolution of 53 eV at 97 keV, a useable dynamic range above 400 keV, and a collecting area of 5 cm(2). We have demonstrated multiplexed readout of the full 256 pixel array with 236 of the pixels (91%) giving spectroscopic data. This is the largest multiplexed array of TES microcalorimeters to date. This paper will review the spectrometer, highlighting the instrument design, detector fabrication, readout, operation of the instrument, and data processing. Further, we describe the characterization and performance of the newest 256 pixel array. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4754630]
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页数：14
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