Speaker
Description
Radio-frequency (RF) windows are sensitive components that ensure both RF power transmission and vacuum integrity in linear accelerators (LINACs). In the X-band frequency, improving reliability is critical for compact LINAC systems, including application in non-destructive testing and medical technologies.
This study presents an RF window designed for operation at 9.3 GHz with a 2.0 MW peak‑power design target. This window is optimised to reduce peak electric field at the ceramic–metal brazed interface while preserving low insertion loss and broad bandwidth. Coupled RF–fluidic–thermal simulations guided an extended cylindrical pillbox design exploiting the $TE_{112}$ mode.
A prototype has been fabricated, and low-power RF measurements have been carried out to validate both the design and manufacturing process. RF simulations and low-power tests show insertion losses below 0.1 dB and a standing-wave ratio lower than 1.05 at 9.3 GHz. High‑power endurance tests carried out on the prototype demonstrated stable behaviour.
Results of the engineering design will be compared with tests and discussed.
Funding Agency
This work was supported by a grant from the French Public Investment Bank (Bpifrance) as part of the France 2030 program.
| Paper status | Proceeding files received |
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