从匀场环结构参数优化设计、线圈线包材料规格的选择、绕制工艺探索、超大幅面二极校正线圈研制、全新准直方法的磁轴检测技术等多方面研究大尺寸螺线管线圈的磁轴控制技术。突破了磁轴倾斜小于等于1 mrad的技术指标，成功研制出磁轴倾斜小于等于0.5 mrad的大尺寸聚焦线圈，解决了其中的关键单元部件研制的核心技术问题。

The magneticaxis tilt, which is the most critical indicator of the focusing solenoid, is always the focus of researchers in related research fields. In this paper, many aspects, such as optimization of fieldhomogenizer design, the choice of material specifications, exploration of winding technology, design of super large size dipole steering coils, and magneticaxis measurement technique are studied using new alignment method. The technical bottleneck of tilt less than 1.0 mrad is broken through and a large size focus solenoid whose magneticaxis tilt is less than 0.5 mrad is successfully developed.