Second stage cooling from a Cryomech PT415 cooler at second stage temperatures up to 300 K with cooling on the first-stage from 0 to 250 W
Second stage cooling from a Cryomech PT415 cooler at second stage temperatures up to 300 K with cooling on the first-stage from 0 to 250 W
复制标题
由 Cryomech PT415 冷却器进行第二级冷却，第二级温度高达 300 K，第一级冷却功率为 0 至 250 W
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
A. Zeller
中科院分区：
文献类型：
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作者：
M. Green;S. Chouhan;C. Wang;A. Zeller
提供给两级冷却器第二级的冷却量取决于第二级温度和第一级冷却器提供的制冷量。通过测量与Cryomech PT-410冷却器相似的数据(4.2K下1.0W，第一级28~30W)，估算了Cryomech PT-415冷却器的第二级冷却作为温度的函数(4.2K下1.5W，第一级42W)。为了准确计算使用PT-415K冷却器的超导磁体的冷却时间，必须知道第二级冷却器可以输送多少冷却量，这是第二级温度和输送到第一级冷却器的附加冷却量的函数。PT415冷却器在15K到25K的温度范围内用于液化氢或由MgB2制造的冷却磁体的应用。本报告描述了估算PT415冷却器性能的方法以及对几台PT415冷却器的测量结果。
The amount of cooling delivered to the second stage of a two stage cooler is dependent on the second stage temperature and the amount of refrigeration provided by the cooler first stage. The second stage cooling as a function of temperature for a Cryomech PT-415 cooler (1.5 W at 4.2 K with 42 W on the first stage) has been estimated by scaling similar data that was measured for a Cryomech PT-410 cooler (1.0 W at 4.2 K with 28 to 30 W on the first stage). In order to accurately calculate the cool-down time for a superconducting magnet using PT-415 K coolers one must know how much cooling can be delivered by the cooler second-stage as a function of the second-stage temperature and the added cooling delivered to the cooler first-stage. There are applications where PT415 coolers are used in the temperature range from 15 to 25 K to liquefy hydrogen or cool magnets fabricated from MgB2. This report describes the method for estimating the cooler performance for a PT415 cooler as well as the results of the measurements on several PT415 coolers.