论文部分内容阅读
带电粒子束在穿过加速结构时激起的尾场,会导致束流能散和发射度的增大．准确计算尾场对正确估计尾场效应对束流性能的影响具有重要意义．本文对等梯度加速结构中短程尾场、中长程尾场和超长程尾场的计算方法进行了较系统的研究,并首次给出了超长程尾场的计算公式．此外,本文还给出了BEPCⅡ直线加速器等梯度加速结构中短程尾场、中长程尾场以及超长程尾场的计算结果,并对多种方法计算结果的一致性和在某些范围内的差别做了分析说明．
The wakefield induced by the charged particle beam as it passes through the accelerating structure causes the beam energy to dissipate and the emission to increase. Accurately calculating the wake field is of great importance for the correct estimation of the effect of wakefield on the beam performance. In this paper, the methods of calculating the short-range wakefield, mid-long-rangedquark and long-range tailwave are studied systematically, and the formula of wakefield is given for the first time. In addition, this paper also gives the calculation results of the short-range wakefield, mid-range and long-range wakefields of the BEPCⅡ linear accelerator such as the gradient acceleration structure. The results of multiple methods are consistent and some differences Analysis done.