Design and characterization of the MUSCAT detectors

Gómez-Rivera, Víctor, Ade, Peter ORCID: https://orcid.org/0000-0002-5127-0401, Barry, Peter, Brien, Thomas, Castillo-Domínguez, Edgar, Ferrusca, Daniel, Hargrave, Peter ORCID: https://orcid.org/0000-0002-3109-6629, Hernández Rebollar, Jose Luis, Hornsby, Amber ORCID: https://orcid.org/0000-0002-9998-1720, Hughes, David, Murias, Dolce, Jáuregui-García, José Miguel, Mauskopf, Philip, Pérez, Abel, Papageorgiou, Andreas, Pascale, Enzo, Rowe, Samuel, Rodríguez, Ivan, Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918, Tapia, Marcial, Miguel, Velázquez, Ventura, Salvador and Doyle, Simon ORCID: https://orcid.org/0000-0002-9054-986X 2020. Design and characterization of the MUSCAT detectors. Presented at: SPIE Astronomical Telescopes + Instrumentation 2020, Virtual, 14-18 December 2020. Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. , vol.11453 SPIE, 114531Q. 10.1117/12.2576334

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Abstract

MUSCAT is a second-generation continuum camera for the Large Millimeter Telescope (LMT) 'Alfonso Serrano', to observe at the 1.1 mm atmospheric window. The camera has 1500 background-limited, horn-coupled lumped- element kinetic inductance detectors (LEKIDs) split across six arrays operating at 130-mK. The detector design for MUSCAT is based on a large-volume, double-meander geometry used as the inductive and two-polarization absorbing section of the LEKID resonator. In this paper we present the optical coupling of the meander to a choked waveguide output, the microwave design of the LEKID architecture, the device fabrication process and results demonstrating the detector sensitivity under a range of optical loads. Also presented are the performance of an aluminum absorbing layer used to minimize the optical cross-talk between detectors.

Item Type:	Conference or Workshop Item (Paper)
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Publisher:	SPIE
Funders:	RCUK, CONACYT
Date of First Compliant Deposit:	15 December 2020
Date of Acceptance:	30 November 2020
Last Modified:	27 Oct 2023 06:17
URI:	https://orca.cardiff.ac.uk/id/eprint/136983

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