Contact resistance of demountable multi-pin joint for superconducting helical coil
Contact resistance of demountable multi-pin joint for superconducting helical coil
复制标题
超导螺旋线圈可拆卸多针接头的接触电阻
DOI：
10.1109/tmag.1987.1064832
复制
发表时间：
1987
影响因子：
2.1
通讯作者：
O. Motojima
中科院分区：
文献类型：
--
作者：
T. Horiuchi;Y. Monju;N. Suzuki;T. Kawai;M. Hamada;K. Inoue;Koji Uo;O. Motojima
设计了一种超导体的“插入式多针接头”，实现了用于日光管聚变反应堆的可拆卸超导螺旋线圈。研究了多锥销和单锥销插入接头的接触电阻与接触压力的关系。这些锥形销镀有5 μ m至50μm厚的铟。在300 MPa接触压力下，单接头试样在7 T下的最小接触电阻为6×10-9Ω cm 2，多接头试样在7 T下的最小接触电阻为9×10-9Ω cm 2。多接头与单接头的接触电阻比与理论计算值基本一致。在具有3.5GJ磁能的反应堆模型Heliotron F中，由于接头的接触电阻而导致的总焦耳损失估计为4.8kW，与约10.8kW的总冷却功率相比是很小的。这些结果表明，锥形插针接头应用于超导螺旋线圈的可能性。
We designed an "Inserting Multi-Pin Joint" for a superconductor to realize a demountable superconducting helical coil for the heliotron fusion reactor. The relation between contact resistance and contact pressure was investigated using multi- and single-taper-pin inserting joints. These taper pins were plated with 5∼50μm thick indium. The minimum contact resistance at 7T was 6×10-9Ωcm2in a single-joint sample and 9×10-9Ωcm2in a multi-joint with 300MPa contact pressure. This contact resistance ratio of multi-joint to single-joint agreed with the theoretically calculated value. In the reactor model Heliotron F with 3.5GJ magnetic energy, total joule loss due to the contact resistance of the joint was estimated at 4.8kW, which was small in comparison to the total cooling power of about 10.8kW. These results suggest the possibility of applying a tapered pin inserting joint to the superconducting helical coil.