Speaker
Description
The operational stability of high-power RF components—e.g., superconducting cavity input couplers and klystron ceramic windows—is critical for reliable superconducting RF (SRF) linear accelerators. To ensure long-term continuous-wave (CW) high-gradient operation, these components must undergo rigorous high-power conditioning at levels exceeding nominal limits. However, megawatt-level RF test platforms are often hindered by high infrastructure costs and limited high-power RF sources.
To address this, the Institute of High Energy Physics (IHEP) is developing a 650 MHz traveling-wave resonant ring (TWRR). Using resonant power recirculation, the system generates megawatt-level circulating power from a relatively low-power source, offering a cost-effective solution for component conditioning. The TWRR targets 1.2 MW circulating power, providing a 1.5× margin for testing 800 kW-class components. It integrates a 10 dB directional coupler, a 0–360° mechanical phase shifter, and a three-stub tuner for precise phase control and impedance matching. Simulations show a power gain of 35.9, and the system is now in manufacturing.
Funding Agency
Work supported by Yifang Wang’s Science Studio of the Thousand Talents Project and National Key Programme for ST Research and Development (Grant NO.: 2024YFA1610602)
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