A Controlled Magnetic Clamp

Springer Science and Business Media LLC - Tập 61 - Trang 751-752 - 2018
V. S. Edelman1
1Kapitsa Institute of Physical Problems, Russian Academy of Sciences, Moscow, Russia

Tóm tắt

A clamp for establishing a thermal contact between cryostat components in a vacuum is described. The contact is established by pressing heat conductors to each other using a permanent magnet and is broken or established by applying a current pulse of the required polarity to the winding around an iron magnetic core. The device is held in the open state by a second permanent magnet. Through the pressed contacts, a copper block with a mass of ∼600 g is cooled in the vacuum from the liquid-nitrogen temperature to the liquid- helium temperature within 4–5 h.

Tài liệu tham khảo

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