强流RFQ的稳定性设计研究

Study on the Design of an Intense-Beam RFQ with Stabilization

对强流RFQ耦合间隙的确定、二极模稳定杆的设计进行了详细的研究和讨论 .利用现有的RFQ冷模 ,进行了本征模频率的测量、场分布的调试和测量、二极模稳定杆的试验 .并通过与模拟结果的比较 ,验证了模拟程序在RFQ腔体设计中的可靠性 .同时 ,对影响RFQ稳定性设计的物理进行了有益的探讨 .

Detailed studies and discussions on the determination of coupling gap and designing of the dipole mode stabilizer rods in an RFQ with intense beams have been done. By taking use of the existent cold model of one section RFQ, measurements of the eigenfrequencies of the eigen quadrupole and dipole modes, tuning and measurement of the RF field distribution and experiments of the dipole mode stabilizer rods are carried out. By making comparison between the results from the experiments and from simulations, the reliability and creditability of the code used in designing the RFQ cavity is proved. In the same time, a brief discussion on the design of RFQ with stabilization is given.