A Field Quality Modeling in Canted Cosine Theta Dipole Magnets Wound Using REBCO Cables
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY(2024)
摘要
In accelerator magnets the magnetic field quality is an important parameter. Using REBCO tapes or cables in magnet windings affects the magnetic field quality because of a quite high magnetization generated by these conductors. In this paper we analyzed numerically (using FEM) an effect of various REBCO cables' magnetization on the field quality of canted cosine theta (CCT) dipole magnets. The magnetic properties of the cables were taken from our measurements of their M (H) curves at 4.2 K and magnetic fields up to 12 T. Also, flux creep effects were measured and their effects on field quality analyzed. Here we present a modeling of a CCT magnet containing 1 dipole double layer wound using a CORC and STAR cable. To make the FEM modeling less computationally "expensive", we modelled only a section of 10 turns of the magnet's central part and calculated b(3) fields on a circle of 2/3 of the innermost layer center line. Special M (H) curves measured during various field cycles (the so called "pre-injection cycles") are effective in decreasing b(3) fields of the magnets. Flux creep effects suppress the b(3) fields further. Using these techniques b(3) fields less than 10 units can be achieved.
更多查看译文
关键词
Stars,Magnetization,Power cables,Superconducting magnets,Magnetic field measurement,Windings,Magnetic flux,Accelerator magnet,canted cosine theta dipole magnet,CORC cable,STAR cable,superconductor
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要