| Paper | Title | Page |
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| Defect-Induced Local Heating of Superconducting Cavity Surface | ||
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The limitation of the accelerating gradient is one of the current major issues with ILC superconducting RF accelerator structures. Field emission and thermal breakdown due to surface imperfections are supposed to limit the gradient performance. Profilometry-based realistic high-fidelity modeling of field enhancement will be presented. Surface defects are suspects responsible for thermal breakdown of superconducting RF cavities. Evaluation of local heating at surface defects and analysis of thermal behavior will be discussed in comparison with experimental evidences. |
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| Simulation of Electropolishing of Superconducting Cavities | ||
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Electropolishing is supposed to be indispensable for high gradient performance of superconducting accelerator structures. Flow of electrolytic fluid and its reaction with surfaces are, however, difficult to measure. Simulation of electropolishing visualizes polishing effect over the entire surface and gives a guide to improved design of electropolishing system. |