Design and characterization of the MUSCAT detectors

V. Gómez-Rivera; P. A. R. Ade; P. S. Barry; T. L. R. Brien; E. Castillo-Domínguez; D. Ferrusca; P. Hargrave; J. L. Hernández-Rebollar; A. Hornsby; D. Hughes; J. M. Jáuregui-García; P. Mauskopf; D. Murias; A. Papageorgiou; E. Pascale; A. Perez; I. Rodríguez; S. Rowe; M. Tapia; C. Tucker; M. Velázquez; S. Ventura; S. Doyle

doi:10.1117/12.2576334

13 December 2020 Design and characterization of the MUSCAT detectors

V. Gómez-Rivera, P. A. R. Ade, P. S. Barry, T. L. R. Brien, E. Castillo-Domínguez, D. Ferrusca, P. Hargrave, J. L. Hernández-Rebollar, A. Hornsby, D. Hughes, J. M. Jáuregui-García, P. Mauskopf, D. Murias, A. Papageorgiou, E. Pascale, A. Perez, I. Rodríguez, S. Rowe, M. Tapia, C. Tucker, M. Velázquez, S. Ventura, S. Doyle

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 114531Q (2020) https://doi.org/10.1117/12.2576334
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

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.

Conference Presentation

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V. Gómez-Rivera, P. A. R. Ade, P. S. Barry, T. L. R. Brien, E. Castillo-Domínguez, D. Ferrusca, P. Hargrave, J. L. Hernández-Rebollar, A. Hornsby, D. Hughes, J. M. Jáuregui-García, P. Mauskopf, D. Murias, A. Papageorgiou, E. Pascale, A. Perez, I. Rodríguez, S. Rowe, M. Tapia, C. Tucker, M. Velázquez, S. Ventura, and S. Doyle "Design and characterization of the MUSCAT detectors", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114531Q (13 December 2020); https://doi.org/10.1117/12.2576334

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