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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >A Submillimeter Cartridge-Type Receiver: ALMA Band 8 (385-500 GHz) Qualification Model
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A Submillimeter Cartridge-Type Receiver: ALMA Band 8 (385-500 GHz) Qualification Model

机译：亚毫米墨盒式接收机：ALMA Band 8（385-500 GHz）鉴定模型

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摘要

We have developed a cartridge-type receiver covering the frequency band of 385-500 GHz as a qualification model of Atacama Large Millimeter/submillimeter Array (ALMA) band 8. It receives two orthogonal polarizations and down-converts the sideband-separated signals to intermediate frequencies (IF) of between 4 and 8 GHz. The cartridge-type receiver consists of cold optics, two feed horns, a wire grid, mirrors, two sideband-separating SIS mixers, cryogenic multipliers of a local oscillator (LO), cryogenic and warm IF amplifiers, a cartridge body, and sensors/wirings. These components were individually tested, and then the cartridge was integrated and tested as a complete assembly. We have also developed equipment for efficiency tests of both the components and the integrated receiver. The single sideband (SSB) noise temperature of this receiver is 100K at the band center and 300K at the band edges. The beam pattern and cross-polarization pattern are consistent with a physical optical calculation. The amplitude stability is around 3 × 10~(-4) in 1 s. The phase stability is less than 2°0 on a time scale of 0.1 s to 10min. These results are promising for a receiver in the ALMA.
机译：我们开发了一种盒式接收器，作为Atacama大毫米波/亚毫米波阵列（ALMA）频带8的合格模型，其覆盖范围为385-500 GHz。它接收两个正交极化并将下边带分离的信号下变频为中间信号。 4至8 GHz之间的频率（IF）。盒式接收器由冷光学元件，两个馈电喇叭，线栅，反射镜，两个边带分隔的SIS混频器，本地振荡器（LO）的低温乘法器，低温和温暖的IF放大器，盒体和传感器/接线。对这些组件进行了单独测试，然后对墨盒进行了集成并作为一个完整的组件进行了测试。我们还开发了用于组件和集成接收器效率测试的设备。该接收机的单边带（SSB）噪声温度在频带中心为100K，在频带边缘为300K。光束图案和交叉偏振图案与物理光学计算一致。振幅稳定性在1 s内约为3×10〜（-4）。在0.1 s至10min的时间范围内，相位稳定性小于2°0。这些结果对于ALMA中的接收器是有希望的。

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