A One Millimeter Wavelength Focal Plane Array Receiver for the LMT

该项目旨在在位于墨西哥普埃布拉州Tonantzintla的50米大型毫米波望远镜（LMT）上构建一个名为OMAR（一毫米波阵列接收器）的16元阵列接收系统。OMAR将作为一种公共用户设施仪器安装，供美国天文学家使用。LMT是麻省大学和国家天文光学电子研究所（INAOE）的联合项目。OMAR被设计在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。OMAR将建立在马萨诸塞大学仪器小组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将提供前所未有的灵敏度、制图速度、光谱覆盖、1毫米波段的空间和光谱分辨率的组合，这将使各种各样的科学项目能够覆盖遥远星系到我们太阳系中彗星飞越的范围。OMAR将是第一个配备边带分离超导接收机的毫米波外差阵列接收机。在每个像素中，每个边带的有效带宽为8 GHz（总带宽为16 GHz），而无需使用机械调谐器。OMAR将部署为16元双极化阵列，将以2x4（8波束）格式排列。OMAR将与实时（OTF）测绘模式一起使用，在1mm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。OMAR是一种技术创新仪器，将为SIS外差阵列接收机定义最先进的技术。作为一个纯粹的技术进步，该项目将在一个创新的边带分离系统中实现混频器，放大器，本地振荡器注入组件的高水平集成，这将对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.