Y.R. Lu, J.E. Chen, J.X. Fang, S.L. Gao, Z.Y. Guo, K.X. Liu, Y.C. Nie, X.Q. Yan, K. Zhu
PKU/IHIP, Beijing
Funding: Supported by NSFC (10775009)
The methodology for low energy spread RFQ beam dynamics design has been studied for 14C+ AMS application. This paper will present a low energy beam dynamics and rf design for a new trapezoidal IH-RFQ. It will accelerate 14C from 40 keV to 500 keV with the length of 1.1 m; operate at 104 MHz with the rf peak power less than 27 kW. The transmission efficiency is better than 95% and the energy spread is as low as 0.6%. The rf structure design and its rf efficiency have been studied by electromagnetic simulation. It shows such trapezoidal IH-RFQ has higher operating frequency than normal IH-RFQ, and it will have more longitudinal accelerating efficiency.