Large-Format Submillimeter / Millimeter-Wave Cameras and Spectrometers for CCAT and Beyond

Metadata Updated: May 2, 2019

Kinetic Inductance Detector (KID) technology is maturing rapidly, both in the US and abroad, with photon-noise-limited arrays now being fielded in formats up to ~1000.  The Cerro-Chajnantor Atacama Telescope (CCAT) will be the world's submillimeter-wave discovery machine.  It is recognized as a powerful complement to ALMA, and has been strongly recommended by the Decadal Survey of Astronomy, Astro2010.  CCAT requires arrays of 50,000 or more pixels, presents an opportunity to field JPL arrays and demonstrate them in a world-leading scientific application. In this project we are developing technology for 3 proposed instruments: 2 cameras (SWCam, LWCam), and a multi-object spectrometer X-Spec.  All of these use Titanium Nitride (TiN) KIDs with readout frequencies in the 50-250 MHz range.SWCam is CCAT's short-wavelength camera.  It will image at 350 μm, possibly also 450 and 200 μm.  Photons are absorbed directly in the TiN inductor which, together with the interdigitated capacitor, forms the KID resonator.  A 432-pixel prototype array has been demonstrated at the Caltech Submillimeter Observatory (CSO), showing good yield and reasonable systematics.  During this year we plan to deliver a second-generation array with increased response to improve sensitivity.  This will be obtained with a smaller inductor, which is coupled with an array of lenses.   We expect to demonstrate photon-noise-limited performance demonstrated at realistic sky loadings for CCAT (<50 pW per pixel).  A second deliverable is a demonstration array which operates in a different band, either 200 μm,  450 μm, or 850 μm, as SWCam. LWCam is CCAT's long-wavelength camera.  It will image at 750 μm, 860 μm, 1.1 mm, 1.3 mm, 2.0 mm, and 3.3 mm, with a total of ~50,000 detectors.  The multi-color information provides discriminating power for dusty galaxies, galaxy clusters (as probed with the Sunyaev-Zeldovich (S-Z) effect), and star-formation regions.  It uses multi-scale phase-array antennas which are coupled via transmission lines to on-chip bandpass filters and the TiN KIDs. Deliverables this year include a full LW Cam prototype chip with 3-scale antenna, demonstrating good efficiency, beamshape, and sensitivity.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_12315
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 8fe80657-0815-49e6-9fa6-01a5c8afb943
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-10-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 5d112373ba3281256fecfdc34ccea8a86aa2b0e4
Source Schema Version 1.1

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