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26 August 2022 Kinetic inductance detectors for the Terahertz Intensity Mapper balloon mission: optical sensitivity and performance of kilopixel arrays.
Reinier M. J. Janssen, Rong Nie, Bruce Bumble, Lun-Jun Liu, Joseph Redford, Jeffrey P. Filippini, Charles M. Bradford, Steve Hailey-Dunsheath, James E. Aguirre, Justin S. Bracks, Anthony J. Corso, Jianyang Fu, Christopher E. Groppi, Jonathan Hoh, Ryan P. Keenan, Ian N. Lowe, Daniel P. Marrone, Philip Mauskopf, Isaac Trumper, Joaquin D. Vieira
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Proceedings Volume PC12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; PC121900Q (2022) https://doi.org/10.1117/12.2630516
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
Abstract
TIM, the Terahertz Intensity Mapper, is a NASA far-infrared balloon mission designed to perform [CII] intensity mapping of the peak of cosmic star formation. To achieve this goal, TIM will fly two grating spectrometers that together cover the 240 to 420 um wavelength range at an R~250. Each spectrometer will require large format arrays (4x~900 detectors) of dual-polarization sensitive detectors, which are photon noise limited at 100 fW of loading. We will present the design of a fully-aluminum lumped-element kinetic-inductance detector (KID) that incorporates a novel “chain-link” absorber design. Operating at 215 mK, we demonstrate that this detector achieves a photon noise limited performance at 80 fW of optical loading with a white noise spectrum down to 1 Hz. Informed by dark measurements, we except these KIDs to achieve a detector limited NEP of 2e-18 W/rt(Hz) at a loading <10 fW. In addition, we shall show our design of a kilopixel array and its initial performance measurements.
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Reinier M. J. Janssen, Rong Nie, Bruce Bumble, Lun-Jun Liu, Joseph Redford, Jeffrey P. Filippini, Charles M. Bradford, Steve Hailey-Dunsheath, James E. Aguirre, Justin S. Bracks, Anthony J. Corso, Jianyang Fu, Christopher E. Groppi, Jonathan Hoh, Ryan P. Keenan, Ian N. Lowe, Daniel P. Marrone, Philip Mauskopf, Isaac Trumper, and Joaquin D. Vieira "Kinetic inductance detectors for the Terahertz Intensity Mapper balloon mission: optical sensitivity and performance of kilopixel arrays.", Proc. SPIE PC12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, PC121900Q (26 August 2022); https://doi.org/10.1117/12.2630516
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KEYWORDS
Sensors
Inductance
Photodetectors
Spectrometers
Capacitors
Optical testing
Quasiparticles
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