NbTi超导缆绝缘工艺温度下电阻率的研究

发布时间：2018-01-18 10:14

本文关键词：NbTi超导缆绝缘工艺温度下电阻率的研究　出处：《低温与超导》2015年11期 　论文类型：期刊论文

更多相关文章： 电阻率 绝缘工艺温度 NbTi超导缆 线圈

【摘要】：超导线圈绝缘固化可以通过给超导线圈中超导缆通入电流,以超导缆自身产生的焦耳热对线圈加热,得到线圈绝缘工艺所需的温度;同时将CICC导体中Nb Ti超导缆和单根超导线加热到线圈绝缘工艺相关温度,用直流四线法测量Nb Ti超导缆和单根超导线在不同温度下的电阻率,得到在303K~443K温度区间内Nb Ti超导缆和超导线电阻率随温度变化的关系式,并依据超导缆绞缆结构对二者进行折算和对比,确认了超导缆电阻率测量结果的可靠性。根据测得的电阻率-温度关系,可以得到在不同温度下超导缆产生焦耳热的能力,从而为超导线圈绝缘固化温度控制提供了重要的参考依据。
[Abstract]:The insulation solidification of superconducting coils can heat the coils with the Joule heat produced by the superconducting cables by passing the current into the superconducting coils and get the necessary temperature for the insulation process of the coils. At the same time, the NB Ti superconducting cable and single superconducting wire in CICC conductor are heated to the temperature related to the coil insulation process. The resistivity of NB Ti superconducting cable and single superconducting wire at different temperatures was measured by DC four-wire method. The relationship between the resistivity of NbTi superconducting cable and superconductor with temperature in the temperature range of 303K / 443K is obtained, and the relationship between them is calculated and compared according to the structure of the superconducting cable. According to the relationship between resistivity and temperature, the ability of producing Joule heat of superconducting cable at different temperature can be obtained. This provides an important reference for the control of the insulation curing temperature of the superconducting coil.
【作者单位】：中国科学院等离子体物理研究所;
【基金】：国家自然科学基金项目——基于未来聚变堆大电流超导接头关键科学问题研究(51177164)资助
【分类号】：TM55
【正文快照】： 投稿日期:2015-08-311引言大型超导磁体在实际运行过程中,一般都处于大电流、强磁场、极低温的多场并存环境下,且多场之间存在相互影响、相互作用。以国际热核聚变实验堆ITER计划为例,它是目前在建的大型国际科研合作项目之一,其目标是建造一个可以自持燃烧的托卡马克核聚变实

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