Although the high-temperature superconducting (HTS) REBa₂Cu₃O _x (REBCO, RE–rare earth elements) material has a strong potential to enable dipole magnetic fields above 20 T in future circular particle colliders, the magnet and conductor technology needs to be developed. As part of an ongoing development to address this need, here we report on our CORC canted cosθ magnet called C2 with a target dipole field of 3 T in a 65 mm aperture. The magnet was wound with 70 m of 3.8 mm diameter CORC wire on machined metal mandrels. The wire had 30 commercial REBCO tapes from SuperPower Inc. each 2 mm wide with a 30 m thick substrate. The magnet generated a peak dipole field of 2.91 T at 6.290 kA, 4.2 K. The magnet could be consistently driven into the flux-flow regime with reproducible voltage rise at an engineering current density between 400–550 A mm⁻², allowing reliable quench detection and magnet protection. The C2 magnet represents another successful step towards the development of high-field accelerator magnet and CORC conductor technologies. The test results highlighted two development needs: continue improving the performance and flexibility of CORC wires and develop the capability to identify locations of first onset of flux-flow voltage.

尽管高温超导（HTS）REBa ₂ Cu ₃ O _x（REBCO，RE稀土元素）材料具有强大的潜力，可以在未来的圆形粒子对撞机中使偶极子磁场达到20 T以上，但磁体和导体技术仍需要被开发。作为满足此需求的持续发展的一部分，我们在此报告我们的CORC 倾斜安装COS θ磁铁称为C2与一个65毫米孔的3个T的目标偶极场。用70 m直径3.8 mm的CORC缠绕磁铁加工的金属芯轴上的金属丝。电线上有30根SuperPower公司的商业REBCO胶带，每根2mm宽，有30根米厚的基板。磁体在6.290 kA，4.2 K时产生了2.91 T的峰值偶极子磁场。在400-550 A mm ^-2的工程电流密度下，磁体可以被一致地驱动到磁通流态，并具有可再现的电压上升，从而实现可靠的淬灭检测和磁铁保护。C2磁体代表了高磁场加速器磁体和CORC研发的又一个成功步骤导体技术。测试结果突出了两个开发需求：继续提高CORC的性能和灵活性 并开发出识别磁通量流电压首次发生位置的功能。