Performance Characteristics of a 4 K Pulse Tube in Current Applications
Performance Characteristics of a 4 K Pulse Tube in Current Applications
复制标题
当前应用中4K脉冲管的性能特点
DOI：
10.1007/0-306-47112-4_27
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
P. Gifford
中科院分区：
文献类型：
--
作者：
C. Wang;P. Gifford
在过去的一年里，Cryomech PT 405型低温冷却器已经应用于多种需要4 K温度和脉冲管特性的应用。PT405的规格自推出以来有所改进。目前，典型的冷却能力是0.6 W，在4.2 K的第二级上，同时30 W，在65 K的第一级上，输入功率为4.9 kW。PT405采用新的CP900系列压缩机包，可在60 Hz和50 Hz电源下保持相同的性能。通过PT405基板传递到低温恒温器中的力小于3.6 N。相同的测试记录了4 K GM低温制冷机的178 N的力。第二级热交换器的最大位移（由于高压和低压循环导致的基管组件伸长）为52 μm。本文介绍了PT 405在低温恒温器、超导磁体传导冷却、ADR X射线探测器预冷和氦冷凝等方面的应用。
The Cryomech Model PT405 has cryo-cooled several applications during the past year where both its 4 K temperature and pulse tube characteristics were required. The specifications for the PT405 have improved since it was introduced. Presently the typical cooling capacity is 0.6 W at 4.2 K on the second stage with simultaneously 30 W at 65 K on the first stage with an input power of 4.9 kW. With the new CP900 Series compressor packages, the PT405 maintains the same performance for both 60 Hz and 50 Hz power supplies. The force transmitted into a cryostat by the PT405 base plate is less than 3.6 N. The same test registers a force of 178 N for a 4 K GM Cryorefrigerator. The maximum displacement (elongation of the base tube assembly due to the cycling of the high and low pressures) at the 2ndstage heat exchanger is52 μm. Some applications of the PT405 are presented in the paper; such as, operating a low vibration cryostat, conductively cooling a superconducting magnet, pre-cooling an ADR X-ray detector and condensing helium.