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An electron beam ion trap and source for re-acceleration of rare-isotope ion beams at TRIUMF

Electron beam driven ionization can produce highly charged ions (HCIs) in a few well-defined charge states. Ideal conditions for this are maximally focused electron beams and an extremely clean vacuum environment. A cryogenic electron beam ion trap fulfills these prerequisites and delivers very pure...

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Main Authors: Blessenohl, Michael A. (Author) , Dobrodey, Stepan (Author) , Warnecke, Christian (Author) , Rosner, M. K. (Author) , Graham, L. (Author) , Paul, S. (Author) , Baumann, T. M. (Author) , Hockenbery, Z. (Author) , Hubele, Renate (Author) , Pfeifer, Thomas (Author) , Ames, F. (Author) , Dilling, J. (Author) , Crespo López-Urrutia, José Ramon (Author)
Format: Article (Journal)
Language:English
Published: 3 May 2018
In: Review of scientific instruments
Year: 2018, Volume: 89, Issue: 5
ISSN:1089-7623
DOI:10.1063/1.5021045
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1063/1.5021045
Verlag, lizenzpflichtig, Volltext: https://aip.scitation.org/doi/10.1063/1.5021045
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Author Notes:M.A. Blessenohl, S. Dobrodey, C. Warnecke, M.K. Rosner, L. Graham, S. Paul, T.M. Baumann, Z. Hockenbery, R. Hubele, T. Pfeifer, F. Ames, J. Dilling, and J.R. Crespo López-Urrutia
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Summary:Electron beam driven ionization can produce highly charged ions (HCIs) in a few well-defined charge states. Ideal conditions for this are maximally focused electron beams and an extremely clean vacuum environment. A cryogenic electron beam ion trap fulfills these prerequisites and delivers very pure HCI beams. The Canadian rare isotope facility with electron beam ion source-electron beam ion sources developed at the Max-Planck-Institut für Kernphysik (MPIK) reaches already for a 5 keV electron beam and a current of 1 A with a density in excess of 5000 A/cm2 by means of a 6 T axial magnetic field. Within the trap, the beam quickly generates a dense HCI population, tightly confined by a space-charge potential of the order of 1 keV times the ionic charge state. Emitting HCI bunches of ≈107 ions at up to 100 Hz repetition rate, the device will charge-breed rare-isotope beams with the mass-over-charge ratio required for re-acceleration at the Advanced Rare IsotopE Laboratory (ARIEL) facility at TRIUMF. We present here its design and results from commissioning runs at MPIK, including X-ray diagnostics of the electron beam and charge-breeding process, as well as ion injection and HCI-extraction measurements.
Item Description:Gesehen am 24.06.20204
Physical Description:Online Resource
ISSN:1089-7623
DOI:10.1063/1.5021045

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