Fabrication and Test of C3a: A Six-Layer Subscale Canted $\cos \theta$ Dipole Magnet Using High-Temperature Superconducting corc Wires

IF 1.7 3区 物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Dmytro Abraimov;Diego Arbelaez;Lucas Brouwer;Helen Feng;Paolo Ferracin;William B. Ghiorso;Hugh C. Higley;Mariusz Juchno;Andy Lin;Thomas Lipton;Linqing Luo;Maxim Marchevsky;Ian Pong;Soren O. Prestemon;Kyle Radcliff;José Luis Rudeiros Fernández;Anjana Saravanan;Tengming Shen;Reed Teyber;Marcos Turqueti;Danko van der Laan;Xiaorong Wang;Jeremy D. Weiss;Yuxin Wu
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Abstract

rebco coated conductors have a strong potential for high-field magnet applications. The rebco technology, however, is still in its infancy for accelerator magnet applications. As part of the U.S. Magnet Development Program, we developed a six-layer canted $\cos \theta$ dipole magnet, C3a, using corc wires developed by Advanced Conductor Technologies LLC. All the layers were wound using a semiautomated winding machine. Three layers of the magnet used corc wires containing the SuperPower “AP” rebco tapes and the remaining layers used the wires containing the “HM” tapes. At 77 K, both kinds of corc wires showed 5% to 10% degradation, after bending to a minimum bend radius of 30 or 35 mm, with respect to the self-field critical current measured before winding. At 4.2 K, the magnet reached 9.5 kA at a ramp rate of 9 A s$^{-1}$ and generated a dipole field of 1.4 T. The critical current of one layer degraded by 4% after a current transient up to 10.5 kA ramped in an averaged rate of 175 kA s$^{-1}$ or 20 T s$^{-1}$. We confirmed the HM corc wire can carry a higher current than the AP corc wire at 4.2 K. The test results of the C3a magnet showed that the fabrication and assembly procedure can be used for the upcoming full-scale C3 magnet.
C3a:六层亚尺度倾斜$\cos \theta$高温超导磁芯磁体的制造与测试
Rebco涂层导体在高磁场磁体应用中具有很强的潜力。然而,rebco技术在加速器磁体应用方面仍处于起步阶段。作为美国磁铁开发计划的一部分,我们开发了一种六层倾斜$\cos \theta$偶极磁铁,C3a,使用由Advanced Conductor Technologies LLC开发的芯线。所有层都使用半自动绕线机缠绕。三层磁体使用含有超级大国“AP”rebco磁带的芯线,其余层使用含有“HM”磁带的电线。在77 K时,两种芯线均显示5% to 10% degradation, after bending to a minimum bend radius of 30 or 35 mm, with respect to the self-field critical current measured before winding. At 4.2 K, the magnet reached 9.5 kA at a ramp rate of 9 A s$^{-1}$ and generated a dipole field of 1.4 T. The critical current of one layer degraded by 4% after a current transient up to 10.5 kA ramped in an averaged rate of 175 kA s$^{-1}$ or 20 T s$^{-1}$. We confirmed the HM corc wire can carry a higher current than the AP corc wire at 4.2 K. The test results of the C3a magnet showed that the fabrication and assembly procedure can be used for the upcoming full-scale C3 magnet.
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来源期刊
IEEE Transactions on Applied Superconductivity
IEEE Transactions on Applied Superconductivity 工程技术-工程:电子与电气
CiteScore
3.50
自引率
33.30%
发文量
650
审稿时长
2.3 months
期刊介绍: IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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