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First Steps Towards Small Arrays of Mo/Au Microcalorimeters

Published

Author(s)

J. Olsen, E. C. Kirk, K. Thomsen, B. van den Brandt, Ph. Lerch, L. Scandella, A. Zehnder, S. Mango, H. R. Ott, Martin Huber, Gene C. Hilton, John M. Martinis

Abstract

We are developing small arrays of microcalorimeters based on transition edge sensors made with Mo/Au bilayers deposited on silicon nitride membranes and Au absorbers. The superconducting transition of the bilayers is adjusted to be around 130 mK with a transition width better than a millikelvin by use of the proximity effect between the Au and Mo films. We built a dilution refrigerator and wired it for 2 channel operation in order to study thermal coupling issues between thermometers within the array. The device fabrication process as well as preliminary results are presented.
Citation
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Volume
444

Keywords

thermal coupling, microcalorimeter, Mo/Au bilayers, transition edge sensors

Citation

Olsen, J. , Kirk, E. , Thomsen, K. , van den Brandt, B. , Lerch, P. , Scandella, L. , Zehnder, A. , Mango, S. , Ott, H. , Huber, M. , Hilton, G. and Martinis, J. (2000), First Steps Towards Small Arrays of Mo/Au Microcalorimeters, Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment (Accessed March 3, 2024)
Created November 30, 2000, Updated October 12, 2021