Speaker
Description
This paper reviews the operational principles, technical implementations, and fundamental physics of alkali vapor charge-exchange canals used for the production of negative helium (He⁻) ion beams. Emphasis is placed on performance characteristics, efficiency, and limitations relevant to modern accelerator applications. In addition, we report on recent upgrades to the Australian National University Heavy Ion Accelerator Facility (HIAF), specifically the enhancement of the alpha-particle injector. The upgrade includes the installation of an electrostatic analyzer and a new negative helium ion source, enabling reconfigured beam-line operation with up to three simultaneous ion sources. These improvements significantly enhance operational flexibility, safety, and injection performance, while expanding experimental capabilities in nuclear physics, space radiation testing, and advanced materials research.
| Email address | Nikolai.Lobanov@anu.edu.au |
|---|---|
| Funding Agency | NCRIS |
| Visitor's Visa | no |
| Classification | Other negative ion sources for fusion, accelerators, and other applications |