The Mexico uk sub-mm camera for astronomy (muscat) on-sky commissioning: focal plane performance

M. Tapia, P. A.R. Ade, E. Aguilar Perez, P. S. Barry, T. L.R. Brien, E. Castillo-Dominguez, C. Dodd, C. Dunscombe, S. Eales, D. Ferrusca, V. Gomez-Rivera, P. Hargrave, J. L. Hernandez-Rebollar, A. Hornsby, J. House, D. Hughes, J. M. Jauregui Garcia, P. Mauskopf, D. Murias, A. PapageorgiouE. Pascale, N. Peretto, A. Perez, S. Rowe, D. Sanchez-Arguelles, M. W.L. Smith, K. Souccar, R. Sudiwala, A. Torres Campos, C. Tucker, M. Velazquez, S. Ventura-Gonzalez, I. Walker, S. Doyle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The MUSCAT camera is a second-generation continuum camera at the 50-m Large Millimetre Telescope (LMT) operating in the 1.1 mm band, installed in late 2021 and commissioned in early 2022. The instrument's focal plane has 1458 horn-coupled lumped-element kinetic inductance detectors (LEKIDs) divided into six arrays deposited on three silicon wafers. This work presents the preliminary on-sky performance results of the focal plane obtained during the commissioning campaign. We characterise the detector's beam size and shape, mapping the point-like source 3C 279 along the focal plane using raster scans, known as beam mapping. It also allows us to identify which resonance frequencies correspond to each detector located in the focal plane, which leads us to a more complete understanding of the behaviour of the detectors, providing us with a reasonable estimation of the array yield. Finally, we compare these results with those obtained during the characterization of the focal plane in the Cardiff laboratory, previously reported in Tapia et al. 2020.

Original languageEnglish (US)
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI
EditorsJonas Zmuidzinas, Jian-Rong Gao
PublisherSPIE
ISBN (Electronic)9781510653610
DOIs
StatePublished - 2022
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022 - Montreal, Canada
Duration: Jul 17 2022Jul 22 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12190
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022
Country/TerritoryCanada
CityMontreal
Period7/17/227/22/22

Keywords

  • Beam mapping
  • Instrument commissioning
  • Instrument installation
  • KID detectors
  • mm camera
  • On-sky focal plane characterisation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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