Comparing transition-edge sensor response times in a modified contact scheme with different support beams

Content Provider	Semantic Scholar
Author	Beyer, Andrew D. Kenyon, Matthew Bumble, Bruce Runyan, Marcus C. Echternach, P. E. Holmes, Warren A. Bock, J. J.
Copyright Year	2014
Abstract	We present measurements of the thermal conductance, G, and effective time constants, , of three transition-edge sensors (TESs) populated in arrays operated from 80-87mK with TC~120mK . Our TES arrays include several variations of thermal architecture enabling determination of the architecture that demonstrates the minimum noise equivalent power (NEP), the lowest , and the trade-offs among designs. The three TESs we report here have identical Mo/Cu bilayer thermistors and wiring structures, while the thermal architectures are: 1) a TES with straight support beams of 1mm length, 2) a TES with meander support beams of total length 2mm and with 2 phononfilter blocks per beam, and 3) a TES with meander support beams of total length 2mm and with 6 phonon-filter blocks per beam. Our wiring scheme aims to lower the thermistor normal state resistance RN and increase the sharpness of the transition =dlogR/dlogT at the transition temperature TC. We find an upper limit of given by (25+10), and G values of 200fW/K for 1), 15fW/K for 2), and 10fW/K for 3). The value of can be improved by slightly increasing the length of our thermistors. PACS numbers: 85.25.Pb; 95.85.-e; 85.25.-j
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Language	English
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Content Type	Text
Resource Type	Article