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Multiplexed microcalorimeter arrays for precision measurements from microwave to gamma-ray wavelengths

Published

Author(s)

Joel Ullom, W.Bertrand (Randy) Doriese, James A. Beall, William Duncan, S. L. Ferreira, Gene C. Hilton, Rob Horansky, Kent D. Irwin, Terrence J. Jach, John Mates, Nathan A. Tomlin, Galen O'Neil, Carl D. Reintsema, Nicholas Ritchie, Dan Schmidt, Leila R. Vale, Yizi Xu, Barry L. Zink, Andrew Hoover, Clifford R. Rudy, Derek Tournear, Duc Vo, Michael W. Rabin

Abstract

Cryogenic microcalorimeters are a promising technology for ultrasensitive measurements of electromagnetic radiation from microwave to gamma-ray wavelengths. Cryogenic microcalorimeters derive their exquisite sensitivity from the minimal thermal noise at typical operating temperatures near 0.1 K. The core technology of the microcalorimeters under development at NIST is independent of the application wavelength: thin-film thermometers whose temperature and resistance change in response to absorbed energy. However the absorbing structures used to couple radiation into the thermometers depend strongly on the application wavelength. Here, we describe microcalorimeter technology and its application to microwave, X-ray, and gamma-ray measurements. In particular, we present results from a 13 pixel gamma-ray microcalorimeter array with a coadded energy resolution of 51 eV FWHM at 103 keV and a single pixel with resolution of 27 eV FWHM at 103 keV. One application for gamma-ray microcalorimeters is to deconvolve the complex spectrum of a mixture of Pu isotopes near 100 keV (Fig. 2).
Citation
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Volume
579
Issue
1

Keywords

gamma-ray detection, microbolometers, microcalorimeters, nuclear spectroscopy, transition-edge sensors

Citation

Ullom, J. , Doriese, W. , Beall, J. , Duncan, W. , Ferreira, S. , Hilton, G. , Horansky, R. , Irwin, K. , Jach, T. , Mates, J. , Tomlin, N. , O'Neil, G. , Reintsema, C. , Ritchie, N. , Schmidt, D. , Vale, L. , Xu, Y. , Zink, B. , Hoover, A. , Rudy, C. , Tournear, D. , Vo, D. and Rabin, M. (2007), Multiplexed microcalorimeter arrays for precision measurements from microwave to gamma-ray wavelengths, Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32579 (Accessed August 19, 2022)
Created August 20, 2007, Updated October 12, 2021