Mobley磁铁是2.5MV质子静电加速器毫微秒束流脉冲化研制中一个很关键的装置。它的作用是将加速器头部切割出的10—15ns脉冲束流经过加速后在尾部压缩成1—2ns脉冲束。Mobley磁铁的性能对脉冲束在靶上的脉宽及斑点大小起着重要的作用。要求磁场有±5×10~(-4)的均匀度。该磁铁采用了积木式等结构。通过测磁发现,磁场的均匀度只有±7×10~(-4),不 Mobley magnets are a key device in the nanosecond pulsed pulsed development of a 2.5MV proton electrostatic accelerator. Its role is to accelerate the head of the accelerator after cutting 10-15ns pulsed beam at the tail compression to 1-2ns pulsed beam. The performance of a Mobley magnet plays an important role in the pulse width and spot size of the pulsed beam on the target. Requires a magnetic field of ± 5 × 10 ~ (-4) uniformity. The magnet uses a modular structure. By measuring magnetism, the uniformity of magnetic field is only ± 7 × 10 ~ (-4), no