【摘要】 可变椭圆极化波荡器EPU10.0是一种可产生多种极化模式相干太赫兹辐射的波荡器。EPU10.0的主要特点是波荡器内的磁块分上下各两排,上下气隙固定,一对对角线永磁块排列固定,另一对可独立做纵向移动,移动重复定位精度小于0.01 mm。对该波荡器的磁测结果显示:在水平线极化和圆极化模式下,磁场的两个横向分量的一、二积分分别为0.012 T.cm和0.7 T.cm2,达到了设计指标。更多还原

【Abstract】 A new type of coherent THz light source is being built in Shanghai Institute of Applied Physics.It will use the femto-second electron beam passing through a variable elliptically polarized undulator to produce the high bright THz radiation with various linear,elliptical or circular polarization.The gap-fixed variable elliptically polarized undulator EPU10.0 was built and its magnetic fields were measured and optimized.The details of the EPU10.0 control and magnetic measurement is presented in the paper.更多还原