International Conference on Ion Sources (ICIS2021)

High B-min Quasi-Stable Operation Regime of an Electron Cyclotron Resonance Ion Source

20 Sept 2021, 07:45

20m

Parallel Session (Contributed Oral) talk Production of highly charged ion beams

Speaker

Dr Ivan Izotov (IAP RAS)

Description

Fundamental studies of excitation and non-linear evolution of kinetic instabilities of strongly non-equlibrium hot plasmas confined in open magnetic traps suggest new opportunities for fine-tuning of conventional electron cyclotron resonance ion sources (ECRIS) widely used for generation of high charge state ions. We report on experiments with a 14 GHz ECRIS , in which adopting the new approach allows to shift the charge state distribution and increase the current of extracted high charge state ions up to two times, achieving, in particular, 95 $\mu$A of O$^{7+}$ with a modest heating power of 280 W/11.56 GHz. A theoretical model supporting and explaining the experimental findings is proposed. The implications on the commonly used semi-empirical scaling laws for ECRISes are discussed.

Presentation materials

Izotov (1).pdf