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Development of fast, background-limited transition-edge sensors for the Background-Limited Infrared/Sub-mm Spectrograph (BLISS) for SPICA

Show simple item record Beyer, Andrew D. Runyan, M. C. Kenyon, M. Echternach, P. M. Chui, T. Bumble, B. Bradford, C. M. Holmes, W. A. Bock, J. J. 2012-10-03T21:21:42Z 2012-10-03T21:21:42Z 2012-07-02
dc.identifier.citation SPIE Astronomical Telescopes and Instrumentation 2012, Amsterdam, Netherlands, July 1-6, 2012 en_US
dc.identifier.clearanceno 12-2858
dc.description.abstract We report experimental progress toward demonstrating background-limited arrays of membrane-isolated transition-edge sensors (TESs) for the Background Limited Infrared/Sub-mm Spectrograph (BLISS). BLISS is a space-borne instrument with grating spectrometers for wavelengths λ= 35-435μm and with R=λ/Δλ~500. The goals for BLISS TESs are: noise equivalent power (NEP) = 5×10-20 W/Hz1/2 and response time τ<30ms. We expect background-limited performance from bilayers TESs with Tϲ=65mK and G=15fW/K. However, such TESs cannot be operated at 50mK unless stray power on the devices, or dark power PD, is less than 200aW. We describe criteria for measuring PƉ that requires accurate knowledge of TC. Ultimately, we fabricated superconducting thermistors from Ir (Tϲ≥135mK) and Mo/Cu proximitized bilayers, where Tϲ is the thermistor transition temperature. We measured the Ir TES arrays in our 50mK adiabatic demagnetization refrigerator test system, which can measure up to eight 1x32 arrays simultaneously using a time-division multiplexer, as well as our single-pixel test system which can measure down to 15mK. In our previous Ir array measurements our best reported performance was NEP=2.5×10-19 W/Hz1/2 and ʈ~5ms for straight-beam TESs. In fact, we expected NEP~1.5×10-19W/Hz1/2 for meander beam TESs, but did not achieve this previously due to 1/f noise. Here, we detail improvements toward measuring the expected NEP and demonstrate NEP=(1.3+0.2)×10- 19W/Hz1/2 in our single-pixel test system and NEP=(1.6+0.3)×10-19W/Hz1/2 in our array test system. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012. en_US
dc.subject transition-edge sensors en_US
dc.subject infrared spectrometer en_US
dc.subject sub-mm spectrometer en_US
dc.subject photon background-limited en_US
dc.title Development of fast, background-limited transition-edge sensors for the Background-Limited Infrared/Sub-mm Spectrograph (BLISS) for SPICA en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Instrumentation and Photography en_US

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