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Terahertz intensity mapper focal plane and array design

Janssen, Reinier M. J. and Liu, Lunjun and Nie, Rong and Fu, Jianyang and Trumper, Isaac and Hailey-Dunsheath, Steve and Bradford, Charles M. and Filippini, Jeffrey P. (2020) Terahertz intensity mapper focal plane and array design. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. Proceedings of SPIE. No.11453. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114531N. ISBN 9781510636934. https://resolver.caltech.edu/CaltechAUTHORS:20210115-133906623

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Abstract

TIM, the Terahertz Intensity Mapper, is a NASA balloon mission designed to perform [CII] intensity mapping of the peak of cosmic star formation. To achieve this, TIM has two longslit (1 degree slit length) grating spectrometers covering the 240-317 um and 317-420 um wavelength bands at R~250, respectively. We will present the design of the ~4000 pixel, horn-coupled kinetic inductance detector arrays servicing each of the spectrometer arms. Each pixel is a lumped-element superconducting resonator made from a 20 nm thick aluminum film, designed to achieve photon noise limited performance at 100 fW of loading. The inductor is a meandered narrow wire, designed to mimic a metal mesh grid at THz frequencies; it is optimized for absorption of both polarizations delivered by the circular waveguide. Each array will consist of four quadrants containing ~1000 pixels on a single microstrip readout line and will be mounted such that critical parameters of the absorber design are maintained.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2560705DOIArticle
ORCID:
AuthorORCID
Janssen, Reinier M. J.0000-0001-9122-9668
Nie, Rong0000-0003-4493-3956
Hailey-Dunsheath, Steve0000-0002-8504-7988
Bradford, Charles M.0000-0001-5261-7094
Filippini, Jeffrey P.0000-0001-8217-6832
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:11453
Record Number:CaltechAUTHORS:20210115-133906623
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210115-133906623
Official Citation:Reinier M. J. Janssen, Lunjun Liu, Rong Nie, Jianyang Fu, Isaac Trumper, Steve Hailey-Dunsheath, Charles M. Bradford, and Jeffrey P. Filippini "Terahertz intensity mapper focal plane and array design", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114531N (13 December 2020); https://doi.org/10.1117/12.2560705
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107521
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Jan 2021 22:01
Last Modified:15 Jan 2021 22:01

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