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http://dx.doi.org/10.9714/psac.2019.21.3.047

REBCO coil operation in gaseous helium and solid nitrogen  

Diev, D.N. (National Research Centre "Kurchatov Institute")
Makarenko, M.N. (National Research Centre "Kurchatov Institute")
Naumov, A.V. (National Research Centre "Kurchatov Institute")
Polyakov, A.V. (National Research Centre "Kurchatov Institute")
Shcherbakov, V.I. (National Research Centre "Kurchatov Institute")
Shutova, D.I. (National Research Centre "Kurchatov Institute")
Surin, M.I. (National Research Centre "Kurchatov Institute")
Publication Information
Progress in Superconductivity and Cryogenics / v.21, no.3, 2019 , pp. 47-50 More about this Journal
Abstract
The paper gives the results of the experiments with a model two-section REBCO solenoid cooled by either gaseous helium (GHe) or sub-cooled/solid nitrogen (SN2) in (50-77) K temperature range. The major cooling source was a single-stage cryocooler Sumitomo CH-110 with the cooling power of 175 W and 130 W at 77 K and 50 K respectively. The coil itself was not directly conduction cooled. We compare the time taken by both coolants to obtain the temperature of the magnet of about 50 K and the homogeneity of the temperature distribution within the cryostat. Test results for the coil operation in solid nitrogen together with the comparison of its critical properties in SN2 and GHe are also presented.
Keywords
HTS magnet; 2G HTS coil; REBCO coated conductor; sub-cooled liquid nitrogen; solid nitrogen; gaseous helium;
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