超流動ヘリウム冷却12T Nb-Ti 超電導マグネット
1983 年 18 巻 5 号 p. 264-269
詳細
1983 年 18 巻 5 号 p. 264-269
A small solenoid coil, which has an inner diameter of 20mm, an outer diameter of 146.5mm, a length of 100mm, has been wound by a fine filamentary Nb-Ti superconductor. A cryostat which generates superfluid helium at atmospheric pressure has been also constructed for the coil test at superfluid helium temperature.
The coil has been successfully excited up to the magnetic field of 12.3T at 1.8K. The performances of the cryostat obtained of using a 140m3/h vacuum pump were: the lowest temperature reached was 1.45K and the effective cooling power was 1.9W at 1.8K.
