Design and optimization analysis of key parameters for a compact ion source for BNCT

The 2.45 GHz Electron Cyclotron Resonance Ion Source(ECRIS) is widely recognized as an effective device for producinghigh-intensity H+, H2+, and H3+ beams. Inmedical cyclotron applications, ion sources are required to becompact and highly adjustable. A compact design not only reduces theequipment si...

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Bibliographic Details
Published in:Journal of instrumentation 2024-12, Vol.19 (12), p.P12018
Main Authors: Yang, Yang, Wang, Guan, Zhou, Wenming, Su, Xingkang, Gu, Long, Yun, Di
Format: Article
Language:English
Subjects:
Accelerator Applications
Chambers
Cyclotron resonance
Design optimization
Electron beams
Electron cyclotron resonance
Electrons
Ion beams
Ion sources
Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR), electron beam (EBIS))
Systems stability
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Summary:The 2.45 GHz Electron Cyclotron Resonance Ion Source(ECRIS) is widely recognized as an effective device for producinghigh-intensity H+, H2+, and H3+ beams. Inmedical cyclotron applications, ion sources are required to becompact and highly adjustable. A compact design not only reduces theequipment size, facilitating integration and installation, but alsoenhances system stability and reliability. High precision inadjustment ensures the quality and stability of the ion beam,meeting the stringent requirements of medical treatments. Therefore,designing a high-performance compact ECR ion source is crucial forimproving the performance and efficiency of medical cyclotrons. Inthis study, we designed an ECR ion source with a discharge chamberradius of only 25 mm and investigated its plasma formation using athree-dimensional model. We explored the effects of differentmicrowave window positions on the extracted beam current,calculated, and determined the optimal position. Additionally, westudied the variations in the fractions of H+, H2+, and H3+ ions in the chamber with respect to pressure andmicrowave power, and discussed the plasma processes within the ECRion source chamber based on these findings.
ISSN:1748-0221
DOI:10.1088/1748-0221/19/12/P12018