Ion Source, Traps and Charge Breeding
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MO2C3 Status and Perspective of Electron Cyclotron Resonance Based Charge Breeders 6
  • J. Angot, M.A. Baylac, M. Migliore, T. Thuillier
    LPSC, Grenoble Cedex, France
  • O.A. Tarvainen
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  Since their invention in the late 1990s, Electron Cyclotron Resonance (ECR) based Charge Breeders (CB) have been used in several Isotope Separation On Line (ISOL) facilities to study radioactive ions. Many developments were carried out on these devices to enhance their performances and improve the knowledge on the ECR charge breeding process in laboratories worldwide. At LPSC, recent experiments in pulse mode were carried out to estimate plasma parameters such as the ionisation, charge exchange and confinement times, providing indications on the high charge state ions confinement. A new model of the 1+ beam capture was also proposed and experimentally verified by studying the stopping of injected ions of different masses. Present ECR charge breeder optimum efficiencies vary from 10 to 20% depending on the ion species and the facilities specifications. The total efficiency ranges from 35 to 90% and the charge breeding time from 10 to 25 ms/q. Electron Beam Ion Source (EBIS) is an alternate CB technology with lower contamination yield, yet limited injection flux capability. ECR CB sustains a higher 1+ beam intensity acceptance and its prospects to improve the efficiency, charge breeding time and beam purity are identified.  
slides icon Slides MO2C3 [1.969 MB]  
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About • Received ※ 21 June 2022 — Revised ※ 30 June 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
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Status and Perspectives of the Advanced Ion Source for Hadrontherapy (AISHa)  
  • O. Leonardi, G. Castro, L. Celona, F. Chines, S. Gammino, A. Massara, L. Neri, S. Passarello, R. Reitano, D. Siliato
    INFN/LNS, Catania, Italy
  • G. Costanzo
    INFN-Pavia, Pavia, Italy
  • L. Malferrari, F. Odorici
    INFN-Bologna, Bologna, Italy
  • C. Maugeri, F. Russo
    CNAO Foundation, Pavia, Italy
  • R. Reitano
    Università degli Studi di Catania, Catania, Italy
  The Advanced Ion Source for Hadrontherapy (AISHa) is a compact electron cyclotron resonance ion source (ECRIS) operating at 18 GHz designed and developed to generate high brightness multiply charged ion beams for hadrontherapy purposes. Its peculiarities make AISHa also a suitable choice for research and industrial applications. AISHa is able to produce more than 1400 µA O6+, 500 µA C4+, 5 mA He2+. In the framework of the INSpIRIT program and in collaboration with CNAO and GSI, new ion beam candidates for cancer treatment and material irradiation are being developed. A copy of the AISHa ion source is also being installed at CNAO to expand its potential in terms of ion beam production. AISHa is also the test-bench for several R&D activities to increase ion source performance and for non-invasive plasma diagnostic purposes: an innovative active plasma chamber designed to increase plasma confinement by modifying plasma losses fluxes is under study together with a dedicated Optical Emission Spectroscopy diagnostics setup. In this work, we will discuss the status of AISHa together with the description of the forthcoming developments and perspectives.  
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