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.
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May 2018
Research Article|
May 03 2018
An electron beam ion trap and source for re-acceleration of rare-isotope ion beams at TRIUMF
Special Collection:
17th International Conference on Ion Sources
M. A. Blessenohl
;
M. A. Blessenohl
a)
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
2
Heidelberg Graduate School of Fundamental Physics, Ruprecht-Karls-Universität Heidelberg
, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
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S. Dobrodey;
S. Dobrodey
a)
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
2
Heidelberg Graduate School of Fundamental Physics, Ruprecht-Karls-Universität Heidelberg
, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
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C. Warnecke
;
C. Warnecke
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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M. K. Rosner;
M. K. Rosner
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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L. Graham;
L. Graham
3
TRIUMF
, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
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S. Paul
;
S. Paul
3
TRIUMF
, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
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T. M. Baumann;
T. M. Baumann
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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Z. Hockenbery;
Z. Hockenbery
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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R. Hubele;
R. Hubele
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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T. Pfeifer;
T. Pfeifer
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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F. Ames;
F. Ames
3
TRIUMF
, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
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J. Dilling;
J. Dilling
3
TRIUMF
, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
4
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
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J. R. Crespo López-Urrutia
J. R. Crespo López-Urrutia
1
Max-Planck-Institut für Kernphysik
, Saupfercheckweg 1, 69117 Heidelberg, Germany
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a)
M. A. Blessenohl and S. Dobrodey contributed equally to this work.
Rev. Sci. Instrum. 89, 052401 (2018)
Article history
Received:
December 30 2017
Accepted:
February 27 2018
Citation
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, J. R. Crespo López-Urrutia; An electron beam ion trap and source for re-acceleration of rare-isotope ion beams at TRIUMF. Rev. Sci. Instrum. 1 May 2018; 89 (5): 052401. https://doi.org/10.1063/1.5021045
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