Study of Lorentz force free DC cable by addition of artificial pinning centers

REBa2Cu3Oy （REBCO）超导体旨在用于多种应用，如电缆和磁铁应用。大多数现场研究都是使用最大洛伦兹力（MLF）配置进行的，但在应用中并非总是如此。因此，研究电流(J)和场(H)相互平行的其他构型（即无洛伦兹力（LFF））是很重要的。如果能够提高LFF的临界电流（Jc），就可以设计大电流容量的直流电缆。在这项工作中，我们研究了人工钉钉中心（APC）对FF结构中Jc的影响。系统地控制了REBCO线材中APC的尺寸和密度。我们发现APC在LFF中对Jc的改善起着重要作用。

REBa2Cu3Oy (REBCO) superconductors are aimed for use in several applications such as cables and magnet applications. The most of the in-field studies have been made using the Maximum Lorentz Force (MLF) configuration, but in applications this is not always the case. Therefore it is important to study other configurations where current (J) and field (H) are parallel to each other (i.e. Lorentz Force Free (LFF)). If increasing critical current (Jc) in LFF could be achieved, large current capacity DC cables could be designed. In this work, we investigate the effect of artificial pinning centers (APC) on the Jc in FF configurations. We systematically controlled size and density of APC in REBCO wire. We found that APC plays important role in the improvement of Jc in LFF.