Page 17 - Demo
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Key Challenges of Conventional NNBI Design
§ Extraction and acceleration
- Cs and gas loading severely limit voltage holding capacity
- Grid power loading due to co-extracted electrons limits pulse length
- Gas loading of accelerator leads to high stripping losses of H- beam
- Backstreaming H+ ions overheat the ion source, complicate T control
§ H- ion production
- Poor surface temperature control compromises H- production
§ Neutralization
- Gas neutralization (~ 60%) caps electrical efficiency
§ Power recuperation
- Required for high energy efficiency
24th CAARI – Forth Worth, TX, November 2, 2016
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