Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2013.02a
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- Pages.239-239
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- 2013
Design Efforts of PAL XFEL RF Components to Reduce RF Breakdown Due to Surface Electric Gradient in High Power Operation
- Published : 2013.02.18
Abstract
The peak klystron power for the PAL (Pohang Accelerator Laboratory) XFEL (X-ray Free Electron Laser) is up to 80 MW which is higher than that of PLS-II LINAC. To prevent the RF breakdown such a high power operation, some of RF components need to be redesigned to reduce the surface electric field gradient to be less than the breakdown gradient at the vacuum-metal surface. For instances, the redesign of the Stanford Linear Accelerator Energy Doubler (SLED) system, the directional coupler and 3dB power splitter using the finite-difference time-domain (FDTD) simulation will be presented.