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Designing, Building and Operating a Microcalorimeter Eds Outside a Cryogenic Research Facility

Published online by Cambridge University Press:  02 July 2020

J. Howard ,
D. Hammermeister  and
J. McCarthy
J. Howard
Affiliation:
Thermo NORAN, 2551 W. Beltline Highway, Middleton, Wisconsin
D. Hammermeister
Affiliation:
Thermo NORAN, 2551 W. Beltline Highway, Middleton, Wisconsin
J. McCarthy
Affiliation:
Thermo NORAN, 2551 W. Beltline Highway, Middleton, Wisconsin
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Abstract

In 1999 Thermo NORAN completed licensing agreements with NIST for the microcalorimeter x-ray spectrometer technology developed by Martinis, Irwin, Hilton and Wollman.Steady progress has been made to commercialize this technology.

Briefly, the NIST microcalorimeter consists of a Transition Edge Sensor (TES) which measures the temperature rise in an absorber due to an incident photon. The sensor must be operated at temperatures below 100 milliKelvin, which is provided by an Adiabatic Demagnetization Refrigerator (ADR), coupled with a traditional liquid helium cryostat. Additional enabling technology includes a Superconducting Quantum Interference Device (SQUID) and a SQUID Array for device readout and low temperature signal amplification. All of this technology has been widely used in cryogenic research facilities for many years, but is not readily available for commercial purchase and use.

Initial work focused on adapting the NIST design to a modern FESEM. The available ports in an FESEM required scaling the heat shields, and cold extension diameters by 68%.

Type
Frontiers of X-Ray Spectrometry (Eds and Wds) in Microanalysis (Organized by D. Newbury and J. H. Scott)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 1048 - 1049
Copyright
Copyright © Microscopy Society of America 2001

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References

references

1X-ray Detection Using a Superconducting Transition-edge Sensor Microcalorimeter with Electrothermal Feedback. Irwin, K.D.et al., Applied Physics Letters 69(13): 1945–1946; Sept 1996CrossRefGoogle Scholar
2High-Energy Resolution Microcalorimeter Spectrometer for X-Ray Microanalysis, Wollman, D.A.et al., Journal of Microscopy 183(3) 196–223, Dec. 1997.CrossRefGoogle Scholar
3 Pursuant to Thermo NORAN's license agreement (94-005-1), NIST has agreed to supply devices for use in engineering prototypes and demonstration systems.Google Scholar