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当詹姆士·杜瓦先生于1866年首先发明玻璃真空容器时,他几乎没有想到近百年后不锈钢杜瓦瓶将被用于系统工程上。图1所示的杜瓦瓶被设计安装在 Tyngsboro Massa-chusetts 的 Haystack 的天线上,它由 Massachusetts 技术学院林肯实验室使用。卡氏天线的反射器直径为36.5米,付反射器为2.8米。杜瓦容器提供了量子放大器和超导磁体所要求的低温环境。当天线指向地平线时,量子放大器和杜瓦瓶位于+45°倾角,而当天线转向天顶时,它们通过90°方位而倾斜到-45°。所需最小的运转时间为八个小
When James Dewar first invented a glass vacuum container in 1866, he hardly imagined that stainless steel dewar would be used in systems engineering nearly a hundred years later. The dewar, shown in Figure 1, is designed to be mounted on Haystack’s antenna in Tyngsboro Massa-chusetts and is used by Lincoln Laboratory of the Massachusetts Institute of Technology. The diameter of the Cat’s antenna reflector is 36.5 meters and the reflector is 2.8 meters. Dewar containers provide the low temperature environment required for quantum amplifiers and superconducting magnets. When the antenna is pointing at horizon, the quantum amplifier and dewar are at +45 ° dip, and when the antenna turns to the zenith, they tilt through -90 ° to -45 °. The minimum required run time is eight small