Abstract
To characterize the electrical and mechanical properties of HTS-conductors at elevated temperatures, a Ne-liquefaction system and cryostat has been developed and built. The device makes use of a coil type condenser inside the experiment dewar. The condenser is fed by LHe. Ne-gas, which enters the dewar at room temperature, liquefies on the coil windings and drips to the bottom of the dewar, where the experimental setup is located. Used He-gas and Ne-gas are recovered. Approximately 1.5 l of LNe was condensed into the dewar in about 1 h after precooling the outer jacket of the dewar with LN2. The device has been used to measure zero-field and in-field transport properties of Bi-2223 and YBCO high-temperature superconductors.
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