Operation of transition-edge sensors with excess thermal noise
| Autor: | K. M. Kinnunen, Jaakko Leppäniemi, Ilari Maasilta, A. Luukanen, Antti Nuottajärvi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Noise power Squid Photon biology business.industry Physics::Instrumentation and Detectors calorimeters Metals and Alloys Y-factor superconducting microwave devices Radiation Condensed Matter Physics Chip SQUID Noise (electronics) biology.animal superconducting transistors Thermal Materials Chemistry Ceramics and Composites transition edge sensors Optoelectronics Electrical and Electronic Engineering business |
| Zdroj: | Maasilta, I J, Kinnunen, K M, Nuottajärvi, A K, Leppäniemi, J & Luukanen, A 2006, ' Operation of transition-edge sensors with excess thermal noise ', Superconductor Science and Technology, vol. 19, pp. S242-S245 . https://doi.org/10.1088/0953-2048/19/5/S16 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/19/5/S16 |
| Popis: | The superconducting transition-edge sensor (TES) is currently one of the most attractive choices for ultra-high resolution calorimetry in the keV x-ray band, and is being considered for future ESA and NASA missions. We have performed a study on the noise characteristics of Au/Ti bilayer TESs, at operating temperatures around ~100 mK, with the SQUID readout at 1.5 K. Experimental results indicate that without modifications the back-action noise from the SQUID chip degrades the noise characteristics significantly. We present a simple and effective solution to the problem: by installing an extra shunt resistor which absorbs the excess radiation from the SQUID input, we have reduced the excess thermal (photon) noise power down by approximately a factor of five, allowing high resolution operation of the sensors. |
| Databáze: | OpenAIRE |
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