A One Millimeter Wavelength Focal Plane Array Receiver for the LMT

该项目致力于在位于墨西哥普埃布拉Tonantzintla的50米大毫米望远镜(LMT)上构建一个名为OMAR(One毫米波阵列接收器)的16元阵列接收器系统。Omar将作为通用设备安装，可供美国天文学家使用。LMT是马萨诸塞州大学和国家天体、光学和电子研究所(INAOE)的联合项目。奥马尔被设计为在210-280 GHz(~1毫米波长)的大气窗口中工作，并将配备最先进的接收器。奥马尔将建立在UMasss仪器集团在建造最先进的焦平面阵列方面的成熟经验和成功遗产的基础上。OMAR将在1毫米波段提供前所未有的灵敏度、测绘速度、光谱覆盖、空间和光谱分辨率的组合，这将使涵盖从遥远星系到我们太阳系中的彗星掠过的各种科学项目成为可能。奥马尔将是第一个配备边带分离超导接收器的毫米波长外差阵列接收器。在每个像素中，每个边带8 GHz的有效带宽(总共16 GHz)将在不使用机械调谐器的情况下可用。奥马尔将被部署为16元双极化阵列，将以2x4(8波束)的格式排列。OMAR将与即时(OTF)映射模式一起使用，在1毫米频段内提供前所未有的灵敏度、映射速度、光谱覆盖、空间和光谱分辨率的组合。OMAR是一种技术创新的仪器，它将定义SIS外差阵列接收器的最先进技术。作为一项纯粹的技术进步，该项目将在创新的边带分离系统中实现混频器、放大器、本振注入组件的高度集成，这将在外差焦平面阵列领域产生重大影响。

This project seeks to construct a 16-element array receiver system called OMAR (One Millimeter-wave Array Receiver) at the 50 m Large Millimeter Telescope (LMT) located in Tonantzintla, Puebla, Mexico. OMAR will be installed as a common-user facility instrument, available for American astronomers. LMT is a joint project of the University of Massachusetts and the Instituto Nacional de Astrofisica, Optica, y Electronica (INAOE). OMAR is designed to operate in the 210 - 280 GHz (~1 mm wavelength) atmospheric window, and will be equipped with state-of-the-art receivers. OMAR will build on the proven experience and the heritage of success of the UMass instrumentation group in building state-of-the-art focal plane arrays. OMAR will provide an unprecedented combination of sensitivity, mapping speed, spectral coverage, spatial and spectral resolution in the 1 mm band, that will enable a wide variety of scientific projects covering the gamut of distant galaxies to comet flybys in our own solar system. OMAR will be the first heterodyne array receiver at millimeter wavelengths that is equipped with sideband-separation super-conducting receivers. In each pixel, 8 GHz of effective bandwidth per sideband (16 GHz total) will be available without the use of mechanical tuners. OMAR will be deployed as a 16 element dual polarization array which will be arranged in a 2x4 (8 beams) format. OMAR will be used with on-the-fly (OTF) mapping mode to provide an unprecedented combination of sensitivity, mapping speed, spectral coverage, spatial and spectral resolution in the 1 mm band. OMAR is a technically innovative instrument that will define the state-of-the-art for SIS heterodyne array receivers. As a purely technical advance, this project will implement a high level of integration of mixer, amplifier, local oscillator injection components in a innovative sideband separation system that will have a significant impact in the field of heterodyne focal-plane arrays.