Analyzing the effects of post couplers in DTL tuning by the equivalent circuit model

作者：Jia Xiao Yu^*; Zheng Shu Xin

来源：Chinese Physics C, 2013, 37(12): 127005.

DOI：10.1088/1674-1137/37/12/127005

• equivalent circuit model
• DTL tuning
• stabilization

Stabilization of the accelerating field in Drift Tube Linac(DTL) is obtained by inserting Post Couplers(PCs). On the basis of the equivalent circuit model for the DTL with and without asymmetrical PCs, stabilization is deduced quantitatively: we let delta omega/omega(0) be the relative frequency error, then we discover that the sensitivity of field to perturbation is proportional to root delta omega/omega(0) without PCs and to delta omega/omega(0) with PCs. Then we adapt the circuit model of symmetrical PCs for the case of asymmetrical PCs. The circuit model shows how the slope of field distribution is changed by rotating the asymmetrical PCs and illustrates that the asymmetrical PCs have the same effect as the symmetrical ones in stabilization.

• 出版日期2013-12
• 单位清华大学