High-precision temperature control and stabilization using a cryocooler
High-precision temperature control and stabilization using a cryocooler
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DOI：
10.1063/1.3484192
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发表时间：
2010-09-01
影响因子：
1.6
通讯作者：
Komine, Takashi
中科院分区：
文献类型：
--
作者：
Hasegawa, Yasuhiro;Nakamura, Daiki;Komine, Takashi
我们描述了一种精确控制温度的方法，使用Gifford-McMahon（GM）制冷机，涉及插入到传统的低温系统的纤维增强塑料阻尼器。在没有大型热浴或不锈钢阻尼器的GM制冷机中，在4.2 K下的温度波动通常为200 mK的量级。在低温下控制GM制冷机的温度特别困难。纤维增强塑料阻尼器使我们能够在低温下大幅降低温度波动。当温度控制在4.2000K时，使用具有两个加热器的反馈温度控制系统可以实现0.21mK的温度波动的标准偏差。添加阻尼器将可实现的最低温度从3.2 K提高到3.3 K。使用GM制冷机实现了4.200 0至300.000 K之间的精确温度控制，即使在300 K时，温度波动的标准偏差也小于1.2 mK。该技术使得使用GM制冷机来控制和稳定温度成为可能。(C)2010年美国物理学会。[doi：10.1063/1.3484192]
We describe a method for precisely controlling temperature using a Gifford-McMahon (GM) cryocooler that involves inserting fiber-reinforced-plastic dampers into a conventional cryosystem. Temperature fluctuations in a GM cryocooler without a large heat bath or a stainless-steel damper at 4.2 K are typically of the order of 200 mK. It is particularly difficult to control the temperature of a GM cryocooler at low temperatures. The fiber-reinforced-plastic dampers enabled us to dramatically reduce temperature fluctuations at low temperatures. A standard deviation of the temperature fluctuations of 0.21 mK could be achieved when the temperature was controlled at 4.200 0 K using a feedback temperature control system with two heaters. Adding the dampers increased the minimum achievable temperature from 3.2 to 3.3 K. Precise temperature control between 4.200 0 and 300.000 K was attained using the GM cryocooler, and the standard deviation of the temperature fluctuations was less than 1.2 mK even at 300 K. This technique makes it possible to control and stabilize the temperature using a GM cryocooler. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3484192]