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Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition

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Assessing the Aging Effect on Ti/Au Bilayers for Transition-Edge Sensor (TES) Detectors.

Maria Gambelli¹, Matteo D'Andrea², Rita Asquini³

¹Institute for Photonics and Nanotechnologies, National Research Council of Italy (CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy.

Sensors (Basel, Switzerland)

|June 27, 2024

Summary

This summary is machine-generated.

We developed new titanium/gold superconducting sensors for particle detection. Our research addresses sensor aging, ensuring stable performance for future cryogenic anticoincidence devices.

Keywords:

TES Ti/Au aging effect annealing proximity effect superconductivity

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Area of Science:

Materials Science
Cryogenic Engineering
Detector Physics

Background:

Transition-edge sensor (TES) microcalorimeters are advanced cryogenic detectors.
These detectors utilize superconducting films for sensitive particle or photon detection.
A new production line is being established for TES detectors as cryogenic anticoincidence (veto) devices.

Purpose of the Study:

To develop stable TES detectors for a new production line.
To investigate and mitigate aging effects on Ti/Au bilayer sensors.
To characterize sensor performance over time and validate fabrication processes.

Main Methods:

Fabrication of Ti/Au bilayer thin films using electron beam evaporation on silicon substrates.
Microfabrication of patterned and non-patterned sensor geometries with varying thicknesses.
Repeated resistance-temperature (R-T) measurements over time to assess sensor stability and degradation.

Main Results:

Initial R-T measurement data collected for different Ti/Au bilayer samples.
Characterization of sensor performance degradation due to aging effects.
Evaluation of an annealing procedure as a potential remedy for sensor aging.

Conclusions:

The study provides foundational data for a new TES detector production line.
Aging effects on Ti/Au sensors were investigated, and a potential mitigation strategy was tested.
This work contributes to the development of reliable cryogenic detectors for scientific applications.