Keyword: ECRIS
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MOC02 A Pathway to Accelerate Ion Beams up to 3 GeV with a K140 Cyclotron ECR, cyclotron, ion-source, plasma 119
 
  • D.Z. Xie, L. Phair, D.S. Todd
    LBNL, Berkeley, California, USA
 
  Funding: U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract number DE-AC02-05CH11231
The capabilities of the K140 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL) have been extensively enhanced through generations of electron cyclotron resonance ion sources (ECRISs). The cyclotron has evolved from a light-ion accelerator into a proton to uranium accelerator and has accelerated ultra-high charge state heavy ions, such as xenon and uranium. Recently, with 124Xe49+ ions injected from VENUS (a 3rd generation ECR ion source) the 88-Inch Cyclotron reached a new record of ~ 2.6 GeV.* This is an energy increase of about fifteen-fold over what this K140 cyclotron could achieve when it started operation almost six decades ago. A 4th generation ECR ion source, MARS-D, is under development and will further raise the output energy of the cyclotron. With the higher ion charge states produced that are anticipated with a new ECR ion source, the 88-Inch Cyclotron ought to be able to accelerate ion beams of energies of 3 GeV and higher for the radiation effects testing community. This paper will present and discuss the development of the MARS-D ECR ion source and the 88-Inch Cyclotron’s recent and possible future achievements.
*: D. Z. Xie, W. Lu, J. Y. Benitez, M. J. Regis, Recent Production of Ultra-High Charge State Ion Beams with VENUS, Proc. of the 23rd Int’l Workshop on ECR Ion Sources, Catania, Italy, Sept, 2018.
 
slides icon Slides MOC02 [11.895 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOC02  
About • paper received ※ 16 September 2019       paper accepted ※ 24 September 2019       issue date ※ 20 June 2020  
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THC02 First Beams Produced by the Texas A&M University Radioactive-Beam Upgrade ECR, target, cyclotron, injection 310
 
  • D.P. May, J.E. Ärje, B.T. Roeder, A. Saastamoinen
    Texas A&M University Cyclotron Institute, College Station, Texas, USA
  • F.P. Abegglen, H.L. Clark, G.J. Kim, G. Tabacaru
    Texas A&M University, Cyclotron Institute, College Station, Texas, USA
 
  Funding: United States Department of Energy, Grant DE-FG02-93ER40773
The first test beams of radioactive ions produced by the ion-guide-on-line (IGOL) system coupled to the charge-breeding electron-cyclotron-resonance ion source (CB-ECRIS) have been accelerated to high energy by the Texas A&M K500 cyclotron. The radioactive ions were first produced by energetic protons, provided by the K150 cyclotron, impinging on foil targets. Low charge-state ions were then swept by a flow of helium gas into an rf-only sextupole ion guide (SPIG) which transports them into the plasma of the CB-ECRIS. The K500 cyclotron and beam-line transport were tuned with analog beam before tuning the radioactive beam.
 
slides icon Slides THC02 [2.782 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-THC02  
About • paper received ※ 13 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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THD02 Central Region Upgrade for the Jyväskylä K130 Cyclotron injection, cyclotron, ECR, emittance 326
 
  • T. Kalvas, P.M.T. Heikkinen, H.A. Koivisto
    JYFL, Jyväskylä, Finland
  • E. Forton, W.J.G.M. Kleeven, J. Mandrillon, V. Nuttens
    IBA, Louvain-la-Neuve, Belgium
 
  The Jyväskylä K130 cyclotron has been in operation for more than 25 years providing beams from H to Au with energies ranging from 1 to 80 MeV/u for nuclear physics research and applications. At the typical energies around 5 MeV/u used for the nuclear physics program the injection voltage used is about 10 kV. The low voltage limits the beam intensity especially from the 18 GHz ECRIS HIISI. To increase the beam intensities the central region of the K130 cyclotron is being upgraded by increasing the injection voltage by a factor of 2. The new central region with spiral inflectors for harmonics 1-3 has been designed. The new central region shows better transmission in simulations than the original one for all harmonics and especially for h=2 typically used for nuclear physics. The engineering design for the new central region is being done.  
slides icon Slides THD02 [12.967 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-THD02  
About • paper received ※ 15 September 2019       paper accepted ※ 27 September 2019       issue date ※ 20 June 2020  
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