Ionization efficiency studies with charge breeder and conventional electron cyclotron resonance ion source
Koivisto, H., Komppula, J., Kronholm, R., Tarvainen, O., Toivanen, V., Lamy, T., Angot, J., Delahaye, P., Maunoury, L., Galata, A., Patti, G., Standylo, L., Steczkiewicz, O., & Choinski, J. (2014). Ionization efficiency studies with charge breeder and conventional electron cyclotron resonance ion source. Review of Scientific Instruments, 85(2), Article 4854215. https://doi.org/10.1063/1.4854215
Julkaistu sarjassa
Review of Scientific InstrumentsTekijät
Lamy, T. |
Päivämäärä
2014Tekijänoikeudet
© 2014 AIP Publishing LLC. Published in this repository with the kind permission of the publisher.
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Radioactive Ion Beams play an increasingly important role in several European research facility programs
such as SPES, SPIRAL1 Upgrade, and SPIRAL2, but even more for those such as EURISOL.
Although remarkable advances of ECRIS charge breeders (CBs) have been achieved, further studies
are needed to gain insight on the physics of the charge breeding process. The fundamental plasma
processes of charge breeders are studied in the frame of the European collaboration project, EMILIE,
for optimizing the charge breeding. Important information on the charge breeding can be obtained by
conducting similar experiments using the gas mixing and 2-frequency heating techniques with a conventional
JYFL 14 GHz ECRIS and the LPSC-PHOENIX charge breeder. The first experiments were
carried out with noble gases and they revealed, for example, that the effects of the gas mixing and
2-frequency heating on the production of high charge states appear to be additive for the conventional
ECRIS. The results also indicate that at least in the case of noble gases the differences between the
conventional ECRIS and the charge breeder cause only minor impact on the production efficiency of
ion beams.
...
Julkaisija
American Institute of PhysicsISSN Hae Julkaisufoorumista
0034-6748Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/23627449
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Diagnostics of a charge breeder electron cyclotron resonance ion source helium plasma with the injection of 23 Na 1+ ions
Tarvainen, Olli; Koivisto, Hannu; Galatà, A.; Angot, J.; Lamy, T.; Thuillier, T.; Delahaye, P.; Maunoury, L.; Mascali, D.; Neri, L. (American Physical Society, 2016)This work describes the utilization of an injected 23Na1þ ion beam as a diagnostics of the helium plasma of a charge breeder electron cyclotron resonance ion source. The obtained data allows estimating the upper limit ... -
Charge breeding time investigations of electron cyclotron resonance charge breeders
Angot, Julien; Tarvainen, Olli; Thuillier, Thomas; Baylac, Maud; Lamy, Thierry; Sole, Patrick; Jacob, Josua (American Physical Society, 2018)To qualify electron cyclotron resonance charge breeders, the method that is traditionally used to evaluate the charge breeding time consists in generating a rising edge of the injected beam current and measuring the time ... -
Study of gasdynamic electron cyclotron resonance plasma vacuum ultraviolet emission to optimize negative hydrogen ion production efficiency
Lapin, R. L.; Skalyga, V. A.; Izotov, I.; Razin, S. V.; Shaposhnikov, R. A.; Vybin, S. S.; Bokhanov, A. F.; Kazakov, M. Yu.; Tarvainen, O. (American Institute of Physics, 2020)Negative hydrogen ion sources are used as injectors into accelerators and drive the neutral beam heating in ITER. Certain processes in low-temperature hydrogen plasmas are accompanied by the emission of vacuum ultraviolet ... -
Estimating ion confinement times from beam current transients in conventional and charge breeder ECRIS
Marttinen, M.; Angot, J.; Annaluru, A.; Jardin, P.; Kalvas, T.; Koivisto, H.; Kosonen, S.; Kronholm, R.; Maunoury, L.; Tarvainen, O.; Toivanen, V.; Ujic, P. (American Institute of Physics, 2020)Cumulative ion confinement times are probed by measuring decaying ion current transients in pulsed material injection mode. The method is applied in a charge breeder and conventional ECRIS yielding mutually corroborative ... -
Dynamic regimes of cyclotron instability in the afterglow mode of minimum-B electron cyclotron resonance ion source plasma
Mansfeld, D.; Izotov, I.; Skalyga, V.; Tarvainen, Olli; Kalvas, Taneli; Koivisto, Hannu; Komppula, Jani; Kronholm, Risto; Laulainen, Janne (Institute of Physics Publishing, 2016)The paper is concerned with the dynamic regimes of cyclotron instabilities in non-equilibrium plasma of a minimum-B electron cyclotron resonance ion source operated in pulsed mode. The instability appears in decaying ion ...
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