Physics – Accelerator Physics
Scientific paper
2003-07-04
Conf.Proc.C030512:2763,2003
Physics
Accelerator Physics
Four pages including cover page. Contributed to PAC2003, Portland, Oregon, USA
Scientific paper
The shape of an RF pulse is distorted upon propagating through an X-band accelerator structure due to dispersive effects. This distortion together with beam loading introduce energy spread between 192 bunches. In order to minimize this energy spread we modify the input RF pulse shape. The pulse propagation, energy gain, and beam loading are modelled with a mode-matching computer code and a circuit model. A 2D model and a circuit model of a complete 60 cm structure, consisting of 55 cells and input and output couplers is analyzed. This structure operates with a 5pi/6 phase advance per cell. Dispersive effects for this structure are more significant than for previously studied 2pi/3 phase advance accelerating structures. Experimental results are compared with the theoretical model and excellent agreement is obtained for the propagation of an RF pulse through the structure.
Adolphsen Chris
Dolgashev Valery A.
Jones Michael R.
Miller Richard H.
Wang Jian-Wei
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