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Design and characterization of the MUSCAT detectors

Gómez-Rivera, Víctor, Ade, Peter ORCID:, Barry, Peter, Brien, Thomas, Castillo-Domínguez, Edgar, Ferrusca, Daniel, Hargrave, Peter ORCID:, Hernández Rebollar, Jose Luis, Hornsby, Amber ORCID:, Hughes, David, Murias, Dolce, Jáuregui-García, José Miguel, Mauskopf, Philip, Pérez, Abel, Papageorgiou, Andreas, Pascale, Enzo, Rowe, Samuel, Rodríguez, Ivan, Tucker, Carole ORCID:, Tapia, Marcial, Miguel, Velázquez, Ventura, Salvador and Doyle, Simon ORCID: 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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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
Date of First Compliant Deposit: 15 December 2020
Date of Acceptance: 30 November 2020
Last Modified: 27 Oct 2023 06:17

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