Title:
CRYOSTAT
Document Type and Number:
Japanese Patent JPS59171184
Kind Code:
A
Abstract:
PURPOSE:To reduce the amount of liquid helium by forming a liquid helium container into a hollow cylinder, and then making a vacuum container covering it as bucket type. CONSTITUTION:The liquid helium container 2 is formed into the hollow cylinder, and the vacuum container 3 is made as bucket type. Such a cryostat 7 makes it enough that the amount of the liquid helium 7 is small, and accordingly the heat penetration from outside is also small. Besides, since the surface area of the container 3 is small and extends only over the outer periphery of a flange junction, the decrease of vacuum degrees is gentle. Therefore, it is sufficient that the amount of the liquid helium is small, and the heat penetration reduces. As a result, the small amount of liquid helium evaporation is enough.
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Inventors:
KADOTANI KENZOU
FUKUSHI YOSHISHIGE
NAGAI MATAO
FUKUSHI YOSHISHIGE
NAGAI MATAO
Application Number:
JP4421883A
Publication Date:
September 27, 1984
Filing Date:
March 18, 1983
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01R31/00; A61B5/055; A61B10/00; G01R33/3815; G12B15/00; H01F6/04; H01L39/04; (IPC1-7): G01N24/02; G01R31/00; G12B15/00; H01F7/22; H01L39/04
Attorney, Agent or Firm:
Akio Takahashi
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