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Full-Array Noise Performance of Deployment-Grade SuperSpec mm-Wave On-Chip Spectrometers

Karkare, K. S. and Barry, P. S. and Bradford, C. M. and Chapman, S. and Doyle, S. and Glenn, J. and Gordon, S. and Hailey-Dunsheath, S. and Janssen, R. M. J. and Kovács, A. and LeDuc, H. G. and Mauskopf, P. and McGeehan, R. and Redford, J. and Shirokoff, E. and Tucker, C. and Wheeler, J. C. and Zmuidzinas, J. (2020) Full-Array Noise Performance of Deployment-Grade SuperSpec mm-Wave On-Chip Spectrometers. Journal of Low Temperature Physics, 199 (3-4). pp. 849-857. ISSN 0022-2291. doi:10.1007/s10909-020-02407-4.

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SuperSpec is an on-chip filter bank spectrometer designed for wideband moderate-resolution spectroscopy at millimeter wavelengths, employing TiN kinetic inductance detectors. SuperSpec technology will enable large-format spectroscopic integral field units suitable for high-redshift line intensity mapping and multi-object spectrographs. In previous results, we have demonstrated noise performance in individual detectors suitable for photon noise-limited ground-based observations at excellent mm-wave sites. In these proceedings, we present the noise performance of a full R∼275 spectrometer measured using deployment-ready RF hardware and software. We report typical noise equivalent powers through the full device of ∼3×10⁻¹⁶ W Hz^(−1/2) at expected sky loadings, which are photon noise dominated. Based on these results, we plan to deploy a six-spectrometer demonstration instrument to the Large Millimeter Telescope in early 2020.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access Paper
Karkare, K. S.0000-0002-5215-6993
Bradford, C. M.0000-0001-5261-7094
Glenn, J.0000-0001-7527-2017
Hailey-Dunsheath, S.0000-0002-8504-7988
Kovács, A.0000-0001-8991-9088
Mauskopf, P.0000-0001-6397-5516
McGeehan, R.0000-0001-5306-8285
Shirokoff, E.0000-0002-2757-1423
Tucker, C.0000-0002-1851-3918
Wheeler, J. C.0000-0003-1349-6538
Additional Information:© 2020 Springer Nature Switzerland AG. Received 30 August 2019; Accepted 08 February 2020; Published 24 February 2020. This work is supported by the National Science Foundation under Grant No. AST-1407457. K. S. Karkare is supported by the Grainger Foundation and the Kavli Institute for Cosmological Physics at the University of Chicago through an endowment from the Kavli Foundation and its founder Fred Kavli. R. M. J. Janssen’s research was supported by an appointment to the NASA Postdoctoral Program at the NASA Jet Propulsion Laboratory, administered by Universities Space Research Association under contract with NASA.
Group:Astronomy Department
Funding AgencyGrant Number
Grainger FoundationUNSPECIFIED
Kavli FoundationUNSPECIFIED
NASA Postdoctoral ProgramUNSPECIFIED
Subject Keywords:Kinetic inductance detectors; Spectrometer; NEP; SuperSpec; Large Millimeter Telescope; ROACH2
Issue or Number:3-4
Record Number:CaltechAUTHORS:20200225-095251518
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Official Citation:Karkare, K.S., Barry, P.S., Bradford, C.M. et al. Full-Array Noise Performance of Deployment-Grade SuperSpec mm-Wave On-Chip Spectrometers. J Low Temp Phys 199, 849–857 (2020).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101527
Deposited By: Tony Diaz
Deposited On:25 Feb 2020 18:07
Last Modified:16 Nov 2021 18:03

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