Speaker
Description
Abstract Driven by various applications such as the development and supply of radioactive isotopes, the construction of an ultra-compact superconducting cyclotron has been started at the China Academy of Atomic Energy since 2025 to accelerate charged particles with a charge to mass ratio of 1:2. This machine has two technical difficulties or challenges: 1) ultra compact superconducting structure, and 2) accelerate two types of high current beams. When the same ECR ion source is capable of generating the intensity beams of $\alpha$ and $H_{2}^+$, therefore, only one beam line is needed for beam injection instead of two. This obviously has practical significance for the ultra-compact superconducting cyclotron.
For this purpose, a 2.45 GHz microwave driven ECR ion source test stand is under development. Outside the discharge chamber with a diameter of 50mm and a length of 130mm, a set of 6-fold multi-cusp magnetic fields and a pair of magnetic mirror field generated by two electromagnetic coils jointly constrain the plasma in the discharge chamber. The optimized design and operation parameters of these magnetic fields for ECR volumes in two different modes to generate $\alpha$ and $H_{2}^+$ beams will be described in detail in the paper. The microwave system, extraction electrodes, vacuum and diagnostics, as well as the test stand will also be presented.
| Email address | 13641305756@139.com |
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| Funding Agency | This work was supported in part by theNSFC under Grant 12427810 and 12135020 |
| Classification | Isotope production, target, and ion source techniques |
