Jul 22 – 26, 2019
Europe/Rome timezone

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

Jul 23, 2019, 5:45 PM
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia


Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Detector readout, signal processing, and related technologies Poster session


Dr Kirit Karkare (University of Chicago)


SuperSpec is an on-chip filter-bank spectrometer designed for wideband moderate-resolution spectroscopy at millimeter and submillimeter wavelengths, employing TiN kinetic inductance detectors. SuperSpec technology will enable integral-field-unit spectrometers suitable for high-redshift line intensity mapping or multi-object spectrographs. We plan to deploy a demonstration instrument to the Large Millimeter Telescope (LMT) in mid-2019, featuring six independent single-polarization SuperSpec chips and covering 190-310 GHz with 100 channels each.

In previous results, we have demonstrated noise performance for individual detectors suitable for photon noise limited observations at excellent mm-wave observing sites. In these proceedings, we present the complete system-level noise performance of deployment-grade devices that we will use at the LMT, measured through a ROACH-based readout system. Array statistics such as NEP, responsivity, and low-frequency noise performance will be shown for all channels and compared to the expected observing conditions and planned scan strategy at the LMT.

Student (Ph.D., M.Sc. or B.Sc.) N
Less than 5 years of experience since completion of Ph.D Y

Primary authors

Dr Kirit Karkare (University of Chicago) Peter Barry (Argonne National Laboratory) Dr Matt Bradford (JPL) Scott Chapman (Dalhousie University) Jason Glenn (University of Colorado - Boulder) Steven Hailey-Dunsheath (California Institute of Technology) Reinier Janssen (Jet Propulsion Laboratory) Henry G. Leduc (Jet Propulsion Laboratory) Phillip Mauskopf (Arizona State University) Ryan McGeehan (University of Chicago) Erik Shirokoff (University of Chicago) Jordan Wheeler (University of Colorado - Boulder) Jonas Zmuidzinas (California Institute of Technology)

Presentation materials