Construction of an Ultra Low Temperature Cryostat with an Automated 3He Melting Pressure Thermometer.

Authors :: Bhupathi, P.
Cancino, J.
Choi, H. C.
Lee, Y.
Source :: AIP Conference Proceedings; 2006, Vol. 850 Issue 1, p1571-1572, 2p, 1 Diagram, 2 Graphs
Publication Year :: 2006
Abstract: We describe the design and construction of an ultra low temperature cryostat. The precooling stage is an Oxford Kelvinox 400 dilution refrigerator, and the copper nuclear demagnetization stage is connected to the mixing chamber through an indium heat switch. This combination enabled us to stay below 1 mK for longer than 5 weeks. The whole system is mounted on a vibration isolated structure and the main pumping lines have various stages of mechanical filters and dampers. An automated melting pressure thermometer has been built and employed to measure the temperature. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Subjects :: CRYOSTATS
LOW temperatures
MELTING points
CRYOELECTRONICS
RESISTANCE thermometers
REFRIGERATORS
ADIABATIC demagnetization
MECHANICAL filters (Electrical engineering)

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