论文部分内容阅读
在带电粒子加速器里,除了特殊的加速结构以外,用的最多的束流通道截面大体上可以分为圆通道、椭圆通道和矩形通道三种类型。在强流情况下,研究束流产生的场必须考虑边界条件的影响,束流截面一般为圆和椭圆。在圆对称边界里圆对称束流的场已有较多的讨论,而在椭圆和矩形边界里只讨论过无限长圆柱和无限长椭圆柱束流的空间电荷场。在某些情况下,由于束流脉冲很短,讨论空间电荷场往往要采用有限长柱束流
In the charged particle accelerator, in addition to the special accelerating structure, the most used beam channel section can be roughly divided into circular channel, elliptical channel and rectangular channel of three types. In the case of strong currents, the field in which the beam is generated must consider the influence of the boundary conditions. The beam cross-sections are usually circles and ellipses. The field of circularly symmetric beams in a circularly symmetric boundary has been discussed more, but only the space charge field of an infinitely long cylinder and an infinitely elliptical beam is discussed in elliptical and rectangular boundaries. In some cases, due to the short beam pulse, the discussion of space charge fields tends to use a finite length of beam