Terahertz intensity mapper focal plane and array design

Reinier M. J. Janssen; Lunjun Liu; Rong Nie; Jianyang Fu; Isaac Trumper; Steve Hailey-Dunsheath; Charles M. Bradford; Jeffrey P. Filippini

doi:10.1117/12.2560705

13 December 2020 Terahertz intensity mapper focal plane and array design

Reinier M. J. Janssen, Lunjun Liu, Rong Nie, Jianyang Fu, Isaac Trumper, Steve Hailey-Dunsheath, Charles M. Bradford, Jeffrey P. Filippini

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 114531N (2020) https://doi.org/10.1117/12.2560705
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

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.

Conference Presentation

Citation Download 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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available