Design and characterization of the MUSCAT detectors

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI:10.1117/12.2576334

V. Gómez-Rivera, P. Ade, P. Barry, T. 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. Pérez, I. Rodríguez, S. Rowe, M. Tapia, C. Tucker, M. Velázquez, S. Ventura, S. Doyle

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引用次数: 3

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.

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MUSCAT探测器的设计与表征

MUSCAT是大型毫米波望远镜(LMT)的第二代连续照相机。“Alfonso Serrano”，在1.1毫米的大气窗口观测。相机有1500个背景限制，喇叭耦合的集总元素动力电感探测器(LEKIDs)，分布在6个运行在130-mK的阵列上。MUSCAT的探测器设计基于LEKID谐振器的感应和双极化吸收部分使用的大体积双弯曲几何结构。在本文中，我们介绍了弯曲到阻塞波导输出的光耦合，LEKID结构的微波设计，器件的制造过程和结果，证明了探测器在一定范围的光负载下的灵敏度。本文还介绍了用于减少探测器间光串扰的铝吸收层的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X

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