Speaker
Description
The high broadband field-gradient RF system based on direct oil-cooling magnetic alloy cavity for High Intensity Heavy-ion Accelerator Facility (HIAF) Bost Ring (BRing) has been successfully reached and developed in Oct. 2022. The RF system consists of a three gaps cavity which loaded by 24 domestic nanocrystalline soft magnetic alloy (MA) ring cores, a RF power amplifier with an output power of 500 kW and digital LLRF. The acceleration voltage reached 66kV (gradient > 30kV/m) with a frequency swing from 290kHz to 2.1MHz, amplitude stability |△A/A|≤1% and phase stability |△φ|≤ 1°.
In 2011, we collaborated with Chinese companies to begin the R&D of ultra-thin amorphous metal ribbon and magnetic ring core manufacturing process, in the meanwhile also established a MA core test platform. After ten years’ effort, 780(OD)×350(ID)×35 (TH) mm MA core with broadband characteristics in the frequency range of 0.1MHz to 20MHz has been successfully developed using domestic 14μm ribbon in 2021. The key performance μQf and Q at 0.3MHz are 6.5GHz and 0.9, respectively.
In addtion, in order to further improve the acceleration gradient, we are still working hard to enhance the performance of MA core.
| Region represented | Asia |
|---|---|
| Paper preparation format | Word |
