【摘要】 该装置由11T超导强磁体;ф_内=30mm室温孔径的金属内杜瓦瓶;80升液氦金属外杜瓦瓶;JWL-150A超导磁体电源以及防辐射屏、吊杆、引线等五部分构成。金属内杜瓦瓶直接插在磁体内径中,其实验空间与外界相通,它可在4.2—400K之间变温,在0—10T之间改变磁场强度,也可随时更换测试样品。金属外杜瓦瓶采用气冷多屏绝热的结构。它自身的蒸发率为0.21升/小时。在内杜瓦瓶温度～70K、场强为10T时,液氦蒸发率为1.3—1.6升/小时之间。更多还原

【Abstract】 This system consists of five parts: a 10T superconducting magnet, a 150 A power supply, a metallic inner dewar, a 80 1 liquid helium outer dewar and some other auxiliaries including the thermal shield, the magnet support, current leads, etc. The inner dewar which is placed in the bore-hole of the magnet provides a φ = 30 mm variable-temperature space from 4.2 K to 400 K and the superconducting magnetic field can be adjusted from 0 to 10 T. The samples can be changed at any time when the magnet is in operating state. The construction of the outer dewar is a gas-cooling multi-shield insulation without liquid nitrogen protection. The loss rate of the liquid helium is 0.21 liter per hour. At 10T field strengh, when the temperature in the inner dewar is at 70 K, the loss rate is in the range of 1.3-1.6 liters per hour.更多还原