CAJ | 학술논문

采用4．2 K级小型低温制冷机作为冷源，可以将低温超导磁体冷却至5 K以下，使得超导磁体处在临界温度以下，从而实现无电阻运行。采用传导冷却的形式冷却超导磁体，具有系统结构简单等优点。讲述了一套采用单台1．5 W＠4．2 K的制冷机作为冷源的低温超导磁体系统，其中超导磁体由三组线圈对组成，使用NbTi线绕制。系统自常温开机运行，约60 h后，超导磁体降温至4 K，进入超导状态，可进行加电实验。当电流加载至70 A后，中心磁场强度达到4．26 T，达到设计要求。
채용4．2 K급소형저온제랭궤작위랭원，가이장저온초도자체냉각지5 K이하，사득초도자체처재림계온도이하，종이실현무전조운행。채용전도냉각적형식냉각초도자체，구유계통결구간단등우점。강술료일투채용단태1．5 W＠4．2 K적제랭궤작위랭원적저온초도자체계통，기중초도자체유삼조선권대조성，사용NbTi선요제。계통자상온개궤운행，약60 h후，초도자체강온지4 K，진입초도상태，가진행가전실험。당전류가재지70 A후，중심자장강도체도4．26 T，체도설계요구。
As a cold source ,the 4.2 K cryocooler can be used to cooling low temperature superconduct-ing magnet cooled to below 5 K, which is below the critical temperature of superconducting magnet , thus to achieve no-resistance operation .By the the conduction cooling form , the superconducting magnet system has the advantages of simple structure , etc..One set of low temperature superconducting magnet system using by a single 1.5 W@4.2 K refrigerator as the source was described .The superconducting magnet composed of five groups coil , which is winding by NbTi line .Since the system boot operating at room temperature , A-bout 60 hours after, the superconducting magnet cooled to 3.8 K and 4 K, under the superconducting state , can be added to electric experiment .When the load current to 70 A, the center of the magnetic field strength reaches 4 .26 T, meeted the design requirements .