A4 Artikkeli konferenssijulkaisussa
Gas mixing and double frequency operation of the permanent magnet quadrupole minimum-B electron cyclotron resonance ion source CUBE-ECRIS (2024)

Toivanen, V., Kalvas, T., Koivisto, H., Kosonen, S., & Tarvainen, O. (2024). Gas mixing and double frequency operation of the permanent magnet quadrupole minimum-B electron cyclotron resonance ion source CUBE-ECRIS. In 20th International Conference on Ion Sources (Article 012047). IOP Publishing. Journal of Physics : Conference Series, 2743. https://doi.org/10.1088/1742-6596/2743/1/012047

JYU-tekijät tai -toimittajat

Toivanen, Ville
Kalvas, Taneli
Koivisto, Hannu
Kosonen, Sami
Tarvainen, Olli

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Toivanen, Ville; Kalvas, Taneli; Koivisto, Hannu; Kosonen, Sami; Tarvainen, Olli

Emojulkaisu: 20th International Conference on Ion Sources

Konferenssi:

Konferenssin paikka ja aika: Victoria, BC, Canada, 17.-22.9.2023

Lehti tai sarja: Journal of Physics : Conference Series

ISSN: 1742-6588

eISSN: 1742-6596

Julkaisuvuosi: 2024

Ilmestymispäivä: 01.05.2024

Sarjan numero: 2743

Artikkelinumero: 012047

Kustantaja: IOP Publishing

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1088/1742-6596/2743/1/012047

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94947

Tiivistelmä

CUBE-ECRIS is a recently commissioned permanent magnet electron cyclotron resonance (ECR) ion source developed at the university of Jyväskylä accelerator laboratory. The special features of the new ion source design include an unconventional quadrupole minimum-B magnetic field structure and a slit beam extraction system necessitated by the line-shaped plasma loss fluxes. Gas mixing and double frequency operation are widely used methods to optimize high charge state ion production of conventional ECR ion sources. The work presented here demonstrates the applicability of these methods for boosting the high charge state beam currents of argon, krypton and xenon extracted from CUBE-ECRIS. Oxygen and helium were used as mixing gases and microwave frequencies between 10 and 11 GHz were used for single and double frequency operation. Gas mixing has a strong impact on the high charge state beam currents. For example, the highest observed charge state increased from 15+ to 19+ for krypton and from 16+ to 23+ for xenon with oxygen gas mixing. Double frequency operation provides an additional performance improvement, for example the currents of argon 9+ and 11+ beams, produced with gas mixing, increased 30% and 100% in double frequency operation at the same total power.

YSO-asiasanat: plasmafysiikka; syklotronit

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Alustava JUFO-taso: 1