Speaker
Description
Short Radiofrequency (RF) pulses are a promising method for increasing the achievable accelerating gradient while significantly reducing the RF breakdown probability. The distributed power coupling technique delivers RF power simultaneously to each accelerating cavity through periodic waveguides, resulting in a reduced filling time for the entire accelerating structure. This approach also enables greater flexibility in cavity optimization and yields higher shunt impedance. This work presents the design and simulation of a novel septum power splitter engineered to drive accelerating cavities in the short-pulse regime. The septum splitter is integrated with a four-cell accelerating structure prototype. This integration allows each cavity to be powered individually and simultaneously using short X-band RF pulses with a peak power of up to 400 MW at 11.7 GHz. The four-cell structure is over-coupled and provides a 2π/3 phase advance between adjacent cells. The CST simulation results demonstrate promising performance in achieving high accelerating gradient under short-pulse operation. Experimental planning will be discussed for the prototype demonstration at the Argonne Wakefield Accelerator (AWA).
Funding Agency
This research was supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award DE-SC0021928.
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