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Ultra-Sensitive Transition-Edge Sensors for the Background Limited Infrared/Sub-mm Spectrograph (BLISS)We report progress in fabricating ultra-sensitive superconducting transition-edge sensors (TESs) for BLISS. BLISS is a suite of grating spectrometers covering 35-433 micron with R approx. 700 cooled to 50 mK that is proposed to fly on the Japanese space telescope SPICA. The detector arrays for BLISS are TES bolometers readout with a time domain SQUID multiplexer. The required noise equivalent power (NEP) for BLISS is NEP = 10(exp -19) W/Hz(exp 1/2) with an ultimate goal of NEP= 5 x 10(exp -20) W/Hz(exp 1/2) to achieve background limited noise performance. The required and goal response times are tau = 150 ms and tau = 50ms respectively to achieve the NEP at the required and goal optical chop frequency 1-5 Hz. We measured prototype BLISS arrays and have achieved NEP = 6 x 10(exp -18) W/Hz(exp 1/2) and tau = 1.4 ms with a Ti TES (T(sub C) = 565 mK) and NEP approx. 2.5 x 10(exp -19) W/Hz(exp 1/2) and tau approximates 4.5 ms with an Ir TES (T(sub C) = 130 mK). Dark power for these tests is estimated at 1-5 fW.
Document ID
20120015936
Document Type
Conference Paper
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)
Echternach, P. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chui, T. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Eom, B.-H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Day, P. K. (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)
Holmes, W.A. (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
August 26, 2013
Publication Date
August 1, 2011
Subject Category
Astronomy
Instrumentation and Photography
Meeting Information
International Workshop on Low Temperature Detectors(Heidelberg)
Distribution Limits
Public
Copyright
Other
Keywords
transition-edge sensors (TESs)