论文部分内容阅读
在概念设计的基础上,进一步开展了加速器的物理设计,建立了主磁铁的三维有限元模型,如图1所示。通过对磁铁结构的反复优化,得到了满足粒子等时性加速的磁场分布,图2示出粒子的等时性的偏差,可看到加速区的微分滑相好于万分之五。图1一个磁极的三维有限元模型图2粒子的微分滑相在此基础上,进行了加速轨道的计算。目前方案中采用了6个峰值电压为1 MV的单间隙谐振腔加速粒子和1个平顶腔体抑制能散,粒子在加速149圈后到达引出位置,加速过程中的积分滑相
Based on the conceptual design, the physical design of the accelerator is further carried out. A three-dimensional finite element model of the main magnet is established as shown in FIG. 1. Through repeated optimization of the magnet structure, the magnetic field distribution satisfying the isochronous acceleration of the particles is obtained. FIG. 2 shows the deviation of the isochronism of the particles, and the differential slip of the acceleration zone is seen to be better than five ten thousandths. Fig.1 Three-dimensional finite element model of one poleFig.2 The differential slip of particles Based on this, the calculation of accelerating orbit is carried out. In the present scheme, six single-gap resonant-cavity accelerating particles with a peak voltage of 1 MV and one flat-top cavity are used to suppress the energy dissipation. The particles reach the outgoing position after 149 revolutions of acceleration and the integral sliding phase