Author/Authors :
Yan، نويسنده , , X.Q. and Chen، نويسنده , , C.E. and Fang، نويسنده , , J.X. and Guo، نويسنده , , Z.Y. and Li، نويسنده , , W.G. and Lu، نويسنده , , Y.R. and Wu، نويسنده , , Y.، نويسنده ,
Abstract :
The accelerating field in the conventional RFQ is originated by the surface modulation of the quadruple electrodes. However, the axial accelerating field generated in this way is quite limited. To enhance the energy gain as well as the focusing power, a post-RFQ accelerating structure called separated function RFQ (SFRFQ) was proposed (Progr. Nat. Sci. 12(1) (2002) 23), and its feasibility has been explored (Chin. Phys. 51(6) (2002)). The RF accelerating field in the SFRFQ structure mainly occurs at gaps between periodical cells, while the electrical quadruple field inside the cells provides the transverse focusing. It turns out that the overall performance can be improved considerably, comparing with that of conventional RFQ. The preliminary results of calculation and model measurements are presented and discussed in the paper.
