HB2025 - the 71st ICFA Advanced Beam Dynamics workshop on High-Intensity and High-Brightness Hadron Beams

Intense highly charged Ion beam production and the status of FECR

THCAC02

Oct 23, 2025, 10:20 AM

20m

room C (conference center)

Contributed Oral Presentation WGC:Accelerator Systems THCAC WGC contributed oral

Speaker

Lixuan Li (Institute of Modern Physics, Chinese Academy of Sciences)

Description

The world's first Nb3Sn and NbTi superconducting electron cyclotron resonance (ECR) ion source, FCER (First 4th-generation ECR ion source), has been deployed in the LEAF (Low Energy high-intensity heavy ion Accelerator Facility) project in 2024. Following initial tuning, under 28+45 GHz microwave heating, the FCER successfully produced 350 eμA of Bi35+ and 620 eμA of Bi31+ ion beams. Recently, to further enhance the performance of the FCER, a 32.9 GHz microwave system was installed to replace the original 28 GHz system. As a result, a series of intense Xe and Bi ion beams were generated under high microwave power conditions. These results indicate that increasing the microwave frequency significantly improves the performance of the ion source. In the future, the FCER will aim to produce high-current, highly charged ion beams at the mA level.