CAJ | 학술논문

超导磁体失超过程中会产生过大内电压和局部温升,这有可能对磁体造成破坏.对超导磁体进行分段内保护是降低失超过程中内电压和局部温升的有效办法,但是分段后各段线圈之间相互耦合,使得失超过程分析复杂化.将已有的单段失超传播模型推广到分段保护磁体的失超分析,研发了失超过程仿真算法.应用该算法对MICE超导耦合磁体在不同分段保护系统下的失超过程进行仿真研究,得到了电流、电压、温度等有关物理量变化曲线.仿真结果表明,通过选择合适的分段数和分段保护电阻,可以控制MICE超导耦合磁体失超过程中内电压和局部温升在允许范围内.
초도자체실초과정중회산생과대내전압화국부온승,저유가능대자체조성파배.대초도자체진행분단내보호시강저실초과정중내전압화국부온승적유효판법,단시분단후각단선권지간상호우합,사득실초과정분석복잡화.장이유적단단실초전파모형추엄도분단보호자체적실초분석,연발료실초과정방진산법.응용해산법대MICE초도우합자체재불동분단보호계통하적실초과정진행방진연구,득도료전류、전압、온도등유관물리량변화곡선.방진결과표명,통과선택합괄적분단수화분단보호전조,가이공제MICE초도우합자체실초과정중내전압화국부온승재윤허범위내.
Quench of superconducting magnets can induce overvoltage and overheating, which will cause destruct on the magnets. Multi-section quench protection is an effective method to control the overvoltage and overheating in the magnets during quench process, but the analysis on the multi-sectioned magnet quench is complicated because of the induction between each section. Based on a classical single section magnet quench model, a multi-sectioned magnet quench simulation algorithm was developed. Using this method, the quench processes of the MICE coupling magnet under different multi-section protections were studied. Changes of main performance parameters including current, voltage and hot spot temperature in the magnet with time were obtained. The simulation results show, with appropriate section number and protection resistance, the overvoltage and overheating in the MICE coupling magnet during quench can be controlled.