横向和纵向耦合束流系统束流发射度增长分析

Analysis of Emittance Growth of Lattice With Transverse and Longitude Coupling

分析了初始无关联无耦合的束流通过存在横向和纵向耦合的束流系统后发射度的增长。结果表明 ,束流的有效发射度随着束流初始条件的变化明显地增长。给出了束流有效发射度的增长关系和边界方程式。

The emittance growing problem of non-corelating and non-coupling beam after passing through a lattice with transverse and longitude coupling was studied using linear transport theory. The results show that the beam effective emittance grows remarkably with the variation of initial conditions of beam after passing through the lattice. The related relations of the beam effective emittance growth and beam phase ellipse equations are given.