Magnet system design for the new 18 GHz ECR ion source at GSI

In order to increase intensities and charge states of available ion species, a new room-temperature ECR Ion Source (ECRIS) operating at 18 GHz is currently under development at GSI. The new ECRIS is based on a Heavy Ion Ion Source Injector (HIISI), developed at the Department of Physics, University...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-04, Vol.2244 (1), p.12102
Main Authors: Andreev, A, Maimone, F, Mäder, J, Lang, R, Patchakui, P T, Tinschert, K, Hollinger, R
Format: Article
Language:English
Subjects:
Coils
Demagnetization
Heavy ions
Ion sources
Magnetism
Permanent magnets
Physics
Plasma control
Room temperature
Systems design
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Summary:In order to increase intensities and charge states of available ion species, a new room-temperature ECR Ion Source (ECRIS) operating at 18 GHz is currently under development at GSI. The new ECRIS is based on a Heavy Ion Ion Source Injector (HIISI), developed at the Department of Physics, University of Jyvüskyla (JYFL), and features three normal conducting coils and a permanent magnet hexapole for plasma confinement. The latter has to be installed inside a refrigerated hexapole chamber, allowing to achieve the required radial confining field and avoiding demagnetization of permanent magnets. Computer simulations are carried out with Opera software package for two Halbach hexapole arrangements and the resulting three-dimensional magnetic fields are compared. The demagnetization of permanent magnets due to the superposition of fields generated by the coils and the hexapole is also simulated for both arrangements.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2244/1/012102