Keyword: injection
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MO2C3 Status and Perspective of Electron Cyclotron Resonance Based Charge Breeders ECR, plasma, electron, ECRIS 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]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-MO2C3  
About • Received ※ 21 June 2022 — Revised ※ 30 June 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
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TU3C3 Preparation of Low-Energy Heavy Ion Beams in a Compact Linear Accelerator/Decelerator experiment, electron, rfq, ion-source 63
 
  • Z. Andelkovic, S. Fedotova, W. Geithner, P. Gerhard, F. Herfurth, I. Kraus, M.T. Maier, A. Reiter, G. Vorobyev
    GSI, Darmstadt, Germany
  • N.S. Stallkamp
    IKF, Frankfurt am Main, Germany
 
  High precision tests of fundamental theories can often unfold their full potential only by using highly charged ions (HCI) at very low energies. Although in light of the envisaged energies at FAIR, experiments in the keV to MeV range may sound like backpedaling, these two techniques are in fact complementary, since the production of heavy HCI is virtually impossible without prior acceleration and electron stripping. However, subsequent preparation, transport, storage and detection of low-energy HCI bring new, surprising sets of problems and limitations. Here we will give an overview of the CRYRING@ESR local injector and the HITRAP linear decelerator. These two facilities consist out of one or two accelerator or decelerator stages, with a total length of around 10 meters, making them "compact" in comparison to other GSI accelerators. The following sections describe their main design parameters, the achieved ion numbers, challenges of beam detection, as well as some special features such as multi-turn injection and single-shot energy analyzers. The conclusion will present the current status and will also give an outlook of the planned applications of low-energy ions at the FAIR facility.  
slides icon Slides TU3C3 [3.244 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TU3C3  
About • Received ※ 20 June 2022 — Revised ※ 01 July 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
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TUP14 Study of Injection Line of the Cyclotrons C70XP of Arronax emittance, cyclotron, quadrupole, experiment 100
 
  • T. Durand, R. Bellamy, C. Castel, F. Haddad, C. Koumeir, F. Poirier, H. Trichet
    Cyclotron ARRONAX, Saint-Herblain, France
  • T. Adam, P.G. Graehling, M. Heine, C. Maazouzi, F.R. Osswald
    IPHC, Strasbourg Cedex 2, France
  • F. Haddad
    SUBATECH, Nantes, France
 
  Funding: Work supported by grants from the French National Agency for Research, Arronax-Plus n°ANR-11-EQPX-0004, IRON n°ANR-11-LABX-18-01 and Next n°ANR-16-IDE-0007 and PhD scholarship from the IN2P3/CNRS.
The cyclotron C70XP is an accelerator built for the production of non-conventional radionuclides for nuclear medicine, research in physics, radio-chemistry and biology. Its injection section has been designed for 4 types of ions (HH+, D-, He2+ & H), 3 types of ions reach the end of the beamline (H+, He2+ & D+) at the maximum energy of 70 MeV (H & He2+). It is important that regular and standard runs provide similar beam features with a good emittance quality. An investigation, focused on the beam in the injection, cover beam measurements and potential beam geometry constraints. The beam transverse characteristics in the injection line has been studied with an Allison-type emittance meter and a simple instrumented collimator installed inside the injection line *. With these 2 devices, it is scrutinized how the beam emittance evolves as a function of settings of the injection magnets and the source parameters **. Dependencies found between the emittance, beam hotspots and tunings are discussed, as well as the protection performed by the collimator. Future of this work with a potential collimator design is introduced.
*F.Poirier and al., ’The Injection and Chopper-Based System at Arronax C70XP Cyclotron’
**F. Poirier and al., ’Installation, Use and Follow-Up of an Emittance-Meter at the Arronax Cyclotron 70XP’
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TUP14  
About • Received ※ 21 June 2022 — Revised ※ 27 June 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)