Critical current of prototype conductors for LHC dipole magnets
Critical current of prototype conductors for LHC dipole magnets
复制标题
大型强子对撞机偶极磁体原型导体的临界电流
DOI：
10.1109/20.133547
复制
发表时间：
1991
影响因子：
2.1
通讯作者：
G. Zappavigna
中科院分区：
文献类型：
--
作者：
P. Fabbricatore;R. Musenich;R. Parodi;D. Truffelli;G. Zappavigna
报道了为大型强子对撞机(LHC)偶极磁体研制的导体的电学测量。进行了两种测量：原型电缆上的临界电流和绞线上的交流磁测量。为了进行临界电流测量，样品被放置在超导磁体Marisa的内孔中，该磁体允许在1.8至5K的温度范围内测量高达6.5T的电流。电流是使用感应方法提供的：背景磁体是将样品作为二次绕组的变压器的主绕组。电流由放置在样品附近的霍尔探头测量；临界电流由阻性标准Rho=10/sup-14/Omega m测量。对四个不同的样品测量了高达60kA的临界电流。为了研究临界电流和有效临界场之间的关系，进行了交流磁化率、穿透磁通和俘获磁通等交流磁测量。还得到了有关低场下灯丝耦合的信息。
Electrical measurements on conductors developed for Large Hadron Collider (LHC) dipole magnets are reported. Two kinds of measurements were carried out: critical current on the prototype cables and AC magnetic measurements on the strands. To perform critical current measurements the samples were placed in the bore of the superconducting magnet MARISA, which allows measurements up to 6.5 T while temperature ranges from 1.8 to 5 K. The current is supplied using an inductive method: the background magnet is the primary winding of a transformer having the sample as a secondary winding. The current is measured by Hall probes placed near the samples; the critical current is measured by the resistive criterion rho =10/sup -14/ Omega m. Critical currents up to 60 kA were measured for four different samples. AC magnetic measurements, like AC susceptibility and penetrated and trapped magnetic flux, were carried out in order to study the connections between the critical current and the effective critical field. Information about the filament coupling at low field is also obtained.