New modified quasi-periodic undulator
New modified quasi-periodic undulator
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DOI：
10.1016/j.nima.2012.05.024
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发表时间：
2012-09
影响因子：
1.4
通讯作者：
Jia Qika;Wu Ai-Lin
中科院分区：
文献类型：
--
作者：
Jia Qika;Wu Ai-Lin
提出了两种新的准周期波荡器（QPU）方案，利用改变磁体块尺寸所产生的谐波磁场效应。数值计算了两种方案的辐射谱通量，并与标准波荡器和当前QPU的辐射谱通量进行了比较。结果表明，与现有的QPU方案相比，新的QPU方案可以大大抑制三次谐波辐射。
We propose two new schemes of a quasi-periodic undulator (QPU) using the harmonic magnetic field effect induced by changing magnet block size. The radiation spectral fluxes of two schemes are numerically calculated and compared with those of the standard undulator and the current QPU. The results demonstrate that new schemes of QPU can greatly suppress the third harmonic radiation comparing with the current QPU.