Speaker
Description
Our 6 MeV medical C-band accelerating structure is assembles using the disk-stacked method, where multiple oxygen-free copper components are stacked along the beam axis. The design incorporates the side-coupled (SC) structure and the re-entrant structure with an accelerating gap at the center of the cavity. Due to the complex shape and the large number of components, there are difficulties in manufacturing efficiency. On the other hand, the longitudinally-split method divides the structure along a plane including the beam axis, independent of the number of cells, typically into only two halves or four quadrants, which significantly reduces the number of components. Building on the development experience of the quadrant-type X-band accelerating structure in the CLIC project, we have been working on the development of a compact, high-gradient, high-shunt impedance, SC-type C-band accelerating structure based on this configuration. We had reported previous work, fabrication of the full-scale structure, low-power RF test result, and preliminary first beam acceleration test at an energy level limited by the testing facility. In this presentation, we will report the progress of our work, RF conditioning and a high-power beam test in the actual operating conditions.
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