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Comparing Transition-Edge Sensor Response Times in a Modified Contact Scheme with Different Support BeamsWe present measurements of the thermal conductance, G, and effective time constants, tau, of three transition-edge sensors (TESs) populated in arrays operated from 80-87mK with T(sub C) approximately 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 tau 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 R(sub N) and increase the sharpness of the transition alpha=dlogR/dlogT at the transition temperature T(sub C). 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 alpha can be improved by slightly increasing the length of our thermistors.
Document ID
20150008050
Document Type
Conference Paper
External Source(s)
Authors
Beyer, A. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kenyon, M. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bumble, B. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Runyan, M. C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Echternach, P. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Holmes, W. A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bock, J. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bradford, C. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 13, 2015
Publication Date
June 24, 2013
Subject Category
Electronics and Electrical Engineering
Meeting Information
International Workshop on Low Temperature Detectors(Pasadena, CA)
Distribution Limits
Public
Copyright
Other
Keywords
SAFARI instrument
Background Limited Infrared/Sub-mm Spectrograph (BLISS)
infrared
spaceborne