Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters

Caroline A. Kilbourne; Simon R. Bandler; Ari D. Brown; James A. Chervenak; Enectali Figueroa-Feliciano; Fred M. Finkbeiner; Naoko Iyomoto; Richard L. Kelley; F. Scott Porter; Stephen J. Smith

doi:10.1117/12.734830

Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters

Caroline A. Kilbourne, Simon R. Bandler, Ari D. Brown, James A. Chervenak, Enectali Figueroa-Feliciano, Fred M. Finkbeiner, Naoko Iyomoto, Richard L. Kelley, F. Scott Porter, Stephen J. Smith

Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

17 Scopus citations

Abstract

Individual x-ray calorimeters based on superconducting transition-edge sensors (TES) have already demonstrated the spectral resolution, speed, and quantum efficiency needed for astrophysical x-ray spectroscopy. We are now beginning to realize this capability on the array scale for the first time. We have developed a new design for the x-ray absorber that has connections to the TES engineered to allow contact only in regions that do not serve as the active thermometer. We have further constrained the design so that a low-resistance absorber will not electrically short the TES, permitting the use of high-conductivity electroplated gold for the x-ray absorber. With such a well-behaved material for the absorber, we now achieve energy resolution at 6 keV in the range 2.4 -3.1 eV FWHM in all the pixels of the same design tested in a close-packed array. We have achieved somewhat higher resolution and faster response by eliminating some of the gold and electroplating bismuth in its place. These are important steps towards the high-resolution, high-fill-factor, microcalorimeter arrays needed for x-ray astrophysics observatories such as Constellation-X.

Original language	English (US)
Title of host publication	UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV
DOIs	https://doi.org/10.1117/12.734830
State	Published - Dec 1 2007
Event	UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV - San Diego, CA, United States Duration: Aug 26 2007 → Aug 27 2007

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6686
ISSN (Print)	0277-786X

Other

Other	UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV
Country	United States
City	San Diego, CA
Period	8/26/07 → 8/27/07

Keywords

Constellation-X
Microcalorimeters
Transition-edge sensors

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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Kilbourne, C. A., Bandler, S. R., Brown, A. D., Chervenak, J. A., Figueroa-Feliciano, E., Finkbeiner, F. M., Iyomoto, N., Kelley, R. L., Porter, F. S., & Smith, S. J. (2007). Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters. In UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV [668606] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6686). https://doi.org/10.1117/12.734830

Kilbourne, Caroline A. ; Bandler, Simon R. ; Brown, Ari D. ; Chervenak, James A. ; Figueroa-Feliciano, Enectali ; Finkbeiner, Fred M. ; Iyomoto, Naoko ; Kelley, Richard L. ; Porter, F. Scott ; Smith, Stephen J. / Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters. UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV. 2007. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters",

abstract = "Individual x-ray calorimeters based on superconducting transition-edge sensors (TES) have already demonstrated the spectral resolution, speed, and quantum efficiency needed for astrophysical x-ray spectroscopy. We are now beginning to realize this capability on the array scale for the first time. We have developed a new design for the x-ray absorber that has connections to the TES engineered to allow contact only in regions that do not serve as the active thermometer. We have further constrained the design so that a low-resistance absorber will not electrically short the TES, permitting the use of high-conductivity electroplated gold for the x-ray absorber. With such a well-behaved material for the absorber, we now achieve energy resolution at 6 keV in the range 2.4 -3.1 eV FWHM in all the pixels of the same design tested in a close-packed array. We have achieved somewhat higher resolution and faster response by eliminating some of the gold and electroplating bismuth in its place. These are important steps towards the high-resolution, high-fill-factor, microcalorimeter arrays needed for x-ray astrophysics observatories such as Constellation-X.",

keywords = "Constellation-X, Microcalorimeters, Transition-edge sensors",

author = "Kilbourne, {Caroline A.} and Bandler, {Simon R.} and Brown, {Ari D.} and Chervenak, {James A.} and Enectali Figueroa-Feliciano and Finkbeiner, {Fred M.} and Naoko Iyomoto and Kelley, {Richard L.} and Porter, {F. Scott} and Smith, {Stephen J.}",

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booktitle = "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV",

note = "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV ; Conference date: 26-08-2007 Through 27-08-2007",

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Kilbourne, CA, Bandler, SR, Brown, AD, Chervenak, JA, Figueroa-Feliciano, E, Finkbeiner, FM, Iyomoto, N, Kelley, RL, Porter, FS & Smith, SJ 2007, Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters. in UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV., 668606, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6686, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV, San Diego, CA, United States, 8/26/07. https://doi.org/10.1117/12.734830

Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters. / Kilbourne, Caroline A.; Bandler, Simon R.; Brown, Ari D.; Chervenak, James A.; Figueroa-Feliciano, Enectali; Finkbeiner, Fred M.; Iyomoto, Naoko; Kelley, Richard L.; Porter, F. Scott; Smith, Stephen J.

UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV. 2007. 668606 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6686).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters

AU - Kilbourne, Caroline A.

AU - Bandler, Simon R.

AU - Brown, Ari D.

AU - Chervenak, James A.

AU - Figueroa-Feliciano, Enectali

AU - Finkbeiner, Fred M.

AU - Iyomoto, Naoko

AU - Kelley, Richard L.

AU - Porter, F. Scott

AU - Smith, Stephen J.

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N2 - Individual x-ray calorimeters based on superconducting transition-edge sensors (TES) have already demonstrated the spectral resolution, speed, and quantum efficiency needed for astrophysical x-ray spectroscopy. We are now beginning to realize this capability on the array scale for the first time. We have developed a new design for the x-ray absorber that has connections to the TES engineered to allow contact only in regions that do not serve as the active thermometer. We have further constrained the design so that a low-resistance absorber will not electrically short the TES, permitting the use of high-conductivity electroplated gold for the x-ray absorber. With such a well-behaved material for the absorber, we now achieve energy resolution at 6 keV in the range 2.4 -3.1 eV FWHM in all the pixels of the same design tested in a close-packed array. We have achieved somewhat higher resolution and faster response by eliminating some of the gold and electroplating bismuth in its place. These are important steps towards the high-resolution, high-fill-factor, microcalorimeter arrays needed for x-ray astrophysics observatories such as Constellation-X.

AB - Individual x-ray calorimeters based on superconducting transition-edge sensors (TES) have already demonstrated the spectral resolution, speed, and quantum efficiency needed for astrophysical x-ray spectroscopy. We are now beginning to realize this capability on the array scale for the first time. We have developed a new design for the x-ray absorber that has connections to the TES engineered to allow contact only in regions that do not serve as the active thermometer. We have further constrained the design so that a low-resistance absorber will not electrically short the TES, permitting the use of high-conductivity electroplated gold for the x-ray absorber. With such a well-behaved material for the absorber, we now achieve energy resolution at 6 keV in the range 2.4 -3.1 eV FWHM in all the pixels of the same design tested in a close-packed array. We have achieved somewhat higher resolution and faster response by eliminating some of the gold and electroplating bismuth in its place. These are important steps towards the high-resolution, high-fill-factor, microcalorimeter arrays needed for x-ray astrophysics observatories such as Constellation-X.

KW - Constellation-X

KW - Microcalorimeters

KW - Transition-edge sensors

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Kilbourne CA, Bandler SR, Brown AD, Chervenak JA, Figueroa-Feliciano E, Finkbeiner FM et al. Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters. In UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV. 2007. 668606. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.734830

Uniform high spectral resolution demonstrated in arrays of TES x-ray microcalorimeters

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