小波纹束流管的阻抗
Impedance of a Beam Tube with Small Corrugations
摘要：
在涉及使用非常短的聚束的加速器项目中，例如直线加速器相干光源（LCLS）-其中波荡器部分中的均方根聚束长度为30微米-，似乎束管表面中的亚微米缺陷也会产生不可接受的大阻抗。我们考虑两个周期模型的不完善，粗糙的表面，一个小的矩形波纹，其他光滑的正弦振荡。我们比较了这两种模型的阻抗。
英文摘要：
In accelerator projects involving the use of very short bunches, such as the Linac Coherent Light Source (LCLS)-where the rms bunch length in the undulator section is 30 micron-, it appears that even submicron imperfections in the beam tube surface can generate an impedance that is unacceptably large. We consider two periodic models of an imperfect, rough surface, one with small rectangular corrugations, the other with smooth sinusoidal oscillations. We compare the impedance of these two models.
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