14 - pixel , multiplexed array of gamma-ray microcalorimeters with 47eV energy resolution at 103keV

W. B. Doriese(National Institute of Standards and Technology), Joel N. Ullom(National Institute of Standards and Technology), James A. Beall(National Institute of Standards and Technology), William Duncan(National Institute of Standards and Technology), L.F. Vieira Ferreira(National Institute of Standards and Technology), G. C. Hilton(National Institute of Standards and Technology), Robert D. Horansky(National Institute of Standards and Technology), K. D. Irwin(National Institute of Standards and Technology), John A. B. Mates(National Institute of Standards and Technology), C. D. Reintsema(National Institute of Standards and Technology), Leila R. Vale(National Institute of Standards and Technology), Yue Xu(National Institute of Standards and Technology), Barry Zink(National Institute of Standards and Technology), M. W. Rabin(Los Alamos National Laboratory), A. Hoover(Los Alamos National Laboratory), C. R. Rudy(Los Alamos National Laboratory), Duc Vo(Los Alamos National Laboratory)
Applied Physics Letters
May 7, 2007
10.1063/1.2738371
Cited by 70

Abstract

The authors present a prototype for a high-energy-resolution, high-count-rate, gamma-ray spectrometer intended for nuclear forensics and international nuclear safeguards. The prototype spectrometer is an array of 14 transition-edge-sensor microcalorimeters with an average energy resolution of 47eV (full width at half maximum) at 103keV. The resolution of the best pixel is 25eV. A cryogenic, time-division multiplexer reads out the array. Several important topics related to microcalorimeter arrays are discussed, including cross-talk, the uniformity of detector bias conditions, fabrication of the arrays, and the multiplexed readout. The measurements and calculations demonstrate that a kilopixel array of high-resolution microcalorimeters is feasible.

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