摇摆器是自由电子激光的重要组件,为了使自由电子激光的输出波长更短或降低其对电子束能量的要求,必须减小摇摆器的周期。我们对钕铁硼和A3钢构成的混合式微型摇摆器首次进行实验研究。由于采用钕铁硼新材料、槽形定位和半周期磁场调节,使得定位精度高,装调方便,从而大大提高了磁场强度和磁场分布均匀性,为变参数摇摆器、光腔 The wiggler is an important component of a free electron laser. In order to make the output wavelength of the free electron laser shorter or to reduce its requirement for the energy of the electron beam, it is necessary to reduce the period of the wiggler. We conducted a first experimental study of a hybrid micro-wiggler made of NdFeB and A3 steel. As the use of new materials NdFeB, slot-shaped positioning and semi-periodic magnetic field adjustment, making the positioning accuracy, easy adjustment, thus greatly improving the magnetic field strength and magnetic field distribution uniformity for the variable parameter rocker, optical cavity