Study on Space Charge Effect in Isochronous Cyclotron  

作　　者：BI Yuan-jie, ZHANG Tian-jue, YANG Jian-jun, AN Shi-zhong 

出　　处：《Annual Report of China Institute of Atomic Energy》2007年第1期41-43,共3页中国原子能科学研究院年报（英文版）

摘　　要：As a critical problem to be solved in an isochronous cyclotron, the space charge force will result in the defocusing effect in radial and vertical direction when the beam intensity reaches several milliamperes.As a critical problem to be solved in an isochronous cyclotron, the space charge force will result in the defocusing effect in radial and vertical direction when the beam intensity reaches several milliamperes It limits the acceptance in vertical direction in classic cyclotron because the vertical focusing force is weak in the central region. However, the longitude space charge effect has drawn more attention in isochronous cyclotron because there is no longitudinal focusing and the strong coupling between the radial and longitudinal motion. The space charge force will evoke a local vortex motion and deform the beam into a spiral as has been noted by several authors.

关 键 词：同步回旋加速器 原子能 空间电荷 临界值 

分 类 号：TL543[核科学技术—核技术及应用]