TY - JOUR
T1 - Improvement of dissipative property in HTS coil impregnated with solid nitrogen
AU - Nakamura, T.
AU - Higashikawa, K.
AU - Muta, I.
AU - Fujio, A.
AU - Okude, K.
AU - Hoshino, T.
N1 - Funding Information:
We would like to thank Dr. S.S. Oh and Dr. H.S. Ha at Korea Electrotechnology Research Institute (KERI) in South Korea for providing us Bi-2223/Ag tapes. We are also grateful to Professor M. Shiotsu at Kyoto University in Japan for fruitful discussions. This work was supported by The Mazda Foundation’s Research Grant, Kansai Research Foundation for technology promotion, and Grant-in-Aid for Scientific Research (14750209) from the Ministry of Education, Culture, Sports, Science and Technology in Japan.
PY - 2003/4/15
Y1 - 2003/4/15
N2 - Dissipative property of high-Tc superconducting (HTS) coil impregnated with solid nitrogen was investigated. Small HTS solenoid coil was fabricated with the use of Bi-2223/Ag multifilamentary tape. Nitrogen was solidified by conduction cooling with Gifford-Macmafon cryocooler at cooling rate of 1 mKs-1. Voltage as well as temperature of the coil was measured by applying the thermal disturbance and bias current. It was shown that the dissipation was reduced drastically by impregnating with solid nitrogen. Furthermore, the properties were also improved by pressurization in the sample chamber. This pressure effect may be due to the suppression of sublimation at the interface between the solid nitrogen and the coil.
AB - Dissipative property of high-Tc superconducting (HTS) coil impregnated with solid nitrogen was investigated. Small HTS solenoid coil was fabricated with the use of Bi-2223/Ag multifilamentary tape. Nitrogen was solidified by conduction cooling with Gifford-Macmafon cryocooler at cooling rate of 1 mKs-1. Voltage as well as temperature of the coil was measured by applying the thermal disturbance and bias current. It was shown that the dissipation was reduced drastically by impregnating with solid nitrogen. Furthermore, the properties were also improved by pressurization in the sample chamber. This pressure effect may be due to the suppression of sublimation at the interface between the solid nitrogen and the coil.
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U2 - 10.1016/S0921-4534(02)02193-7
DO - 10.1016/S0921-4534(02)02193-7
M3 - Conference article
AN - SCOPUS:0037445686
SN - 0921-4534
VL - 386
SP - 415
EP - 418
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
T2 - ICMC 2002
Y2 - 16 June 2002 through 20 June 2002
ER -