用于电子辐照的扫描仪是电子加速器的重要装置。为了进一步改善辐照剂量的均匀度，提出了由三角波和正弦波合成的电流所产生的扫描磁场，使扫描均匀度有所提高。

The scanning instrument used in electron irradiation is an important device of the electron accelerator. In order to improve the homogeneity of the radiation dosage

it is proposed that the homogeneity of the scanning can be raised if the scanning magnetic field is produced by the electric current composed of both the trigonometric and sine waves.