Bulletin of the American Physical Society
2024 APS March Meeting
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Z48: Superconducting Architectural Development
11:30 AM–2:30 PM,
Friday, March 8, 2024
Room: 200E
Sponsoring
Units:
DQI DMP DCMP
Chair: Haimeng Zhang, University of Southern California
Abstract: Z48.00011 : Transition Edge Sensors for Active Energy Removal from Silicon Substrates*
1:54 PM–2:06 PM
Presenter:
Miranda Thompson
(National Institute of Standards and Technology)
Authors:
Miranda Thompson
(National Institute of Standards and Technology)
Kelsey Morgan
(University of Colorado Boulder)
John B Mates
(National Institute of Standards and Technology)
Johnathon Gard
(University of Colorado Boulder)
Corey Rae H McRae
(University of Colorado Boulder)
Florent Lecocq
(National Institute of Standards and Technology Boulder)
Michael R Vissers
(National Institute of Standards and Technology)
Dan Schmidt
(National Institute of Standards and Technology)
Douglas A Bennett
(National Institute of Standards and Technology Boulder)
Joel N Ullom
(National Institute of Standards and Technology)
In standard setups, wirebonds provide a large thermal conductance between the silicon substrate and the bath (~100 nW/K per wirebond), but are located at the perimeter of the chip. Unwanted energy spreads through the chip before removal. To prevent this, transition edge sensors (TESs) can be included on chip for active energy removal. TESs are voltage-biased superconducting films that are widely used in microcalorimeters and microbolometers. Energy from phonons, photons, or particles warms the TES, causing its temperature and resistance to increase. Due to negative electro-thermal feedback, bias current and power decrease and the absorbed energy is removed from the circuit.
We have designed, constructed, and characterized a TES circuit for active energy removal. We measured the effective thermal conductance provided by the TES. The measured chip had a heater and two TES devices. We measured the response of the second TES to excess energy from the heater with the first TES on and off. The first TES removed excess energy produced by the heater.
*We gratefully acknowledge support from the QC-S5 LPS program through BAA# W911NF-22-S-0006, Topic NS5.
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