论文标题
朝20吨混合加速器偶极磁铁
Towards 20 T Hybrid Accelerator Dipole Magnets
论文作者
论文摘要
在圆形粒子加速器中获得非常高碰撞能的最有效方法是最大化主弯曲偶极子的场强。在使用NB-TI超导体的偶极磁体中，实际场极限被认为是8-9T。当使用NB3SN超导体材料时，可以实现15-16 T的场水平。为了进一步将磁场推到NB3SN极限之外，需要在磁铁设计中考虑高温超导体（HTS）。颗粒加速器磁铁最有希望的HTS材料是BI2212和REBCO。但是，他们出色的表现的成本明显更高。因此，可以使用HTS和NB3SN材料的混合溶液组成20 t偶极磁体的经济可行选择。我们在本文中讨论各种20种混合磁铁概念的初步概念设计。在整体设计标准的定义定义之后，使用基于简单扇形线圈的有限元模型研究了线圈维度和参数。然后提出初步的2D横截面计算结果，并比较三个主要布局：cos-theta，block和common-coil。都考虑了传统设计和更先进的压力管理选项。
The most effective way to achieve very high collision energies in a circular particle accelerator is to maximize the field strength of the main bending dipoles. In dipole magnets using Nb-Ti superconductor the practical field limit is considered to be 8-9 T. When Nb3Sn superconductor material is utilized, a field level of 15-16 T can be achieved. To further push the magnetic field beyond the Nb3Sn limits, High Temperature Superconductors (HTS) need to be considered in the magnet design. The most promising HTS materials for particle accelerator magnets are Bi2212 and REBCO. However, their outstanding performance comes with a significantly higher cost. Therefore, an economically viable option towards 20 T dipole magnets could consist in an hybrid solution, where both HTS and Nb3Sn materials are used. We discuss in this paper preliminary conceptual designs of various 20 T hybrid magnet concepts. After the definition of the overall design criteria, the coil dimensions and parameters are investigated with finite element models based on simple sector coils. Preliminary 2D cross-section computation results are then presented and three main layouts compared: cos-theta, block, and common-coil. Both traditional designs and more advanced stress-management options are considered.
