Adiabatic Demagnetisation Refrigeration Extension for SQUID Magnetometer

A method for decreasing the minimum temperature achievable by a SQUID magnetometer is presented, based on adiabatic demagnetisation refrigeration. The method is found to successfully provide cooling to below 0.26 K for more than an hour. However, performing magnetisation measurements strongly influences the temperature and shortens the duration to a few minutes in the original setup. The cause is most probably re-evaporation of condensed helium, and possible improvements to prevent this effect are suggested.


Advisor(s):
Rønnow, Henrik M.
Year:
2014
Keywords:
Laboratories:


Note: The status of this file is: Involved Laboratories Only


 Record created 2015-01-30, last modified 2018-03-17

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