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  • Title: A new microwave coupling scheme for high intensity highly charged ion beam production by high power 24-28 GHz SECRAL ion source.
    Author: Guo JW, Sun L, Lu W, Zhang WH, Feng YC, Shen Z, Li LX, Li JB, Zhang XZ, Hitz D, Zhao HW.
    Journal: Rev Sci Instrum; 2020 Jan 01; 91(1):013322. PubMed ID: 32012624.
    Abstract:
    The efficiency of the microwave-plasma coupling is a key issue to enhance the performance of electron cyclotron resonance ion sources (ECRISs) in terms of higher ion beam intensity yield. The coupling properties are affected by the microwave coupling scheme, especially for the high frequency (f > 20 GHz) and high power (P > 5 kW) ECR ion sources. Based on the study of 24 GHz SECRAL ion source performances working at different launching systems, a new microwave coupling scheme, called the Vlasov launcher, is proposed, which can not only realize efficient power matching and feeding but also enhance the microwave power distribution on the ECR surface. The first promising results are presented in this article. Then, a prototype dedicated to the next generation ECRIS is described.
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