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

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Abstract

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 \(R{\sim }275\) spectrometer measured using deployment-ready RF hardware and software. We report typical noise equivalent powers through the full device of \(\sim \,3 \times 10^{-16}\)\(\hbox {W Hz}^{-1/2}\) 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.

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Acknowledgements

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.

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Authors and Affiliations

  1. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL, 60637, USA

    K. S. Karkare, P. S. Barry, R. McGeehan & E. Shirokoff

  2. High-Energy Physics Division, Argonne National Laboratory, Argonne, IL, 60439, USA

    P. S. Barry

  3. Jet Propulsion Laboratory, Pasadena, CA, 91109, USA

    C. M. Bradford, R. M. J. Janssen & H. G. LeDuc

  4. California Institute of Technology, Pasadena, CA, 91125, USA

    C. M. Bradford, S. Hailey-Dunsheath, R. M. J. Janssen, J. Redford & J. Zmuidzinas

  5. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 1A6, Canada

    S. Chapman

  6. School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, UK

    S. Doyle & C. Tucker

  7. Center for Astrophysics and Space Astronomy, University of Colorado Boulder, Boulder, CO, 80309, USA

    J. Glenn & J. Wheeler

  8. School of Earth and Space Exploration, Arizona State University, Tempe, AZ, 85287, USA

    S. Gordon & P. Mauskopf

  9. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, 02138, USA

    A. Kovács

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  1. K. S. Karkare
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  2. P. S. Barry
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  4. S. Chapman
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  5. S. Doyle
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  6. J. Glenn
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  8. S. Hailey-Dunsheath
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  9. R. M. J. Janssen
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  10. A. Kovács
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  13. R. McGeehan
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Correspondence to K. S. Karkare.

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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). https://doi.org/10.1007/s10909-020-02407-4

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  • DOI: https://doi.org/10.1007/s10909-020-02407-4

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