| タイトル | Gifford-McMahon/Joule-Thomson Refrigerator Cools to 2.5 K |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110014724 |
| 著者（英） | Fernandez, Jose; Hanson, Theodore; Britcliffe, Michael |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 2005-02-01 |
| 言語 | eng |
| 内容記述 | A compact refrigerator designed specifically for cooling a microwave maser low-noise amplifier is capable of removing heat at a continuous rate of 180 mW at a temperature of 2.5 K. This refrigerator is a combination of (1) a commercial Gifford-McMahon (GM) refrigerator nominally rated for cooling to 4 K and (2) a Joule-Thomson (J-T) circuit. The GM refrigerator pre-cools the J-T circuit, which provides the final stage of cooling. The refrigerator is compact and capable of operating in any orientation. Moreover, in comparison with a typical refrigerator heretofore used to cool a maser to 4.5 K, this refrigerator is simpler and can be built at less than half the cost. |
| NASA分類 | Engineering (General) |
| レポートNO | NPO-30661 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/332573 |
