Speaker
Description
As the first demonstration ion source of the fourth generation, the FECR (First Fourth-Generation ECR Ion Source) has been developed and utilized for the production of highly charged ion beams since July 2024. It now serves as the primary injector ion source for the Low‑Energy intense‑highly‑charged ion Accelerator Facility (LEAF), which entered routine operation in 2025. To date, FECR has accumulated over 5,000 beam hours, delivering ion beams ranging from oxygen to uranium. Given that FECR still employs a hybrid magnet structure, a higher‑field variant—the HFECR (High‑Field ECR) ion source—is under development at the Institute of Modern Physics (IMP) to fully demonstrate the feasibility of Nb₃Sn technology for ECR ion sources. The Nb₃Sn cold mass for HFECR was recently successfully tested up to its design currents in a test dewar. Its final assembly into the operational cryogenic system is scheduled for completion by the end of 2026. This paper presents the operational status of the FECR ion source and discusses the progress in developing the HFECR cold mass.
Funding Agency
National Natural Science Foundation of China (Grant Nos. 11427904, 12025506)
| Classification | MC1: New developments and status reports |
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