Core Insights - The successful acceptance of China's first compact P-band high-power metamaterial traveling wave tube marks a significant technological breakthrough for the China Spallation Neutron Source (CSNS) [1][3] - This device is crucial for the RF power source system of the CSNS linear accelerator, providing energy and power similar to an automobile engine [3] - The development of this technology signifies a shift from reliance on imports to independent innovation in high-end RF device research in China [3] Development and Testing - The P-band 324MHz traveling wave tube was developed through collaboration between the CSNS RF team, the University of Electronic Science and Technology of China, and other research institutions [3] - The project team introduced a resonant cavity loaded metamaterial technology design for the 324MHz high-power traveling wave tube [3] - After over four years of technical challenges, the device successfully passed high-power testing and met all key technical indicators, achieving a peak power of 2.5MW during a 48-hour stability test [3] Future Prospects - The P-band high-power metamaterial traveling wave tube has broad application prospects in large scientific installations, medical fields, and other industrial sectors [3] - The device is scheduled to officially launch in September 2026, further enhancing China's capabilities in high-end RF device development [3]