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dc.contributor.authorNeben, Derek
dc.contributor.authorTarvainen, Olli
dc.contributor.authorKronholm, Risto
dc.contributor.authorKoivisto, Hannu
dc.contributor.authorKalvas, Taneli
dc.contributor.authorMachicoane, Guillaume
dc.contributor.authorLeitner, Daniela
dc.contributor.editorLettry, Jacques
dc.contributor.editorMahner, Edgar
dc.contributor.editorMarsh, Bruce
dc.contributor.editorPardo, Richard
dc.contributor.editorScrivens, Richard
dc.date.accessioned2018-10-24T08:40:23Z
dc.date.available2019-09-22T21:35:35Z
dc.date.issued2018
dc.identifier.citationNeben, D., Tarvainen, O., Kronholm, R., Koivisto, H., Kalvas, T., Machicoane, G., & Leitner, D. (2018). Plasma response to amplitude modulation of the microwave power on a 14 GHz electron cyclotron resonance ion source. In J. Lettry, E. Mahner, B. Marsh, R. Pardo, & R. Scrivens (Eds.), <i>Proceedings of the 17th International Conference on Ion Sources</i> (Article 040012). AIP Publishing. AIP Conference Proceedings, 2011. <a href="https://doi.org/10.1063/1.5053286" target="_blank">https://doi.org/10.1063/1.5053286</a>
dc.identifier.otherCONVID_28652945
dc.identifier.otherTUTKAID_79087
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/59933
dc.description.abstractThis paper reports the effects of sinusoidal microwave power Amplitude Modulation (AM) on the performance of Electron Cyclotron Resonance (ECR) ion sources. The study was conducted on the 14 GHz ECR ion source ECR2 at the University of Jyväskylä. The klystron output was intentionally altered by a variable frequency sinusoidal amplitude modulation. The average microwave power 350 W was modulated between 530 W and 180 W from 0.011-25 kHz. The integrated x-ray energy, the mass analyzed beam current and the forward and reflected microwave power were measured. The energy integrated x-ray signal responded strongly with low frequency modulation and was no longer observable at approximately 2.2 kHz where the signal strength became solely dependent on the time averaged power. The beam current responded in a similar way but exhibited a strong dependence with magnetic field. Qualitatively, we found source tuning parameters where AM effects were reduced also produced the highest currents of Ne8+ in Continuous Wave (CW) mode. Furthermore, these parameters are typically used for optimized beam injection into the K130 cyclotron. The dependence of beam current and the x-ray signal modulation on AM frequency for different magnetic fields are reported. A qualitative interpretation of the results will be given.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherAIP Publishing
dc.relation.ispartofProceedings of the 17th International Conference on Ion Sources
dc.relation.ispartofseriesAIP Conference Proceedings
dc.rightsIn Copyright
dc.subject.otherplasma
dc.subject.othercyclotron resonance
dc.titlePlasma response to amplitude modulation of the microwave power on a 14 GHz electron cyclotron resonance ion source
dc.typeconferenceObject
dc.identifier.urnURN:NBN:fi:jyu-201810084373
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineFysiikkafi
dc.contributor.oppiaineKiihdytinlaboratoriofi
dc.contributor.oppiainePhysicsen
dc.contributor.oppiaineAccelerator Laboratoryen
dc.type.urihttp://purl.org/eprint/type/ConferencePaper
dc.date.updated2018-10-08T09:15:09Z
dc.relation.isbn978-0-7354-1727-4
dc.description.reviewstatuspeerReviewed
dc.relation.issn0094-243X
dc.relation.numberinseries2011
dc.type.versionpublishedVersion
dc.rights.copyright© AIP Publishing. 2018
dc.rights.accesslevelopenAccessfi
dc.relation.conferenceInternational Conference on Ion Sources
dc.subject.ysomikroaallot
dc.subject.ysoplasma (kaasut)
dc.subject.ysoplasmatekniikka
dc.subject.ysosyklotronit
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p5741
jyx.subject.urihttp://www.yso.fi/onto/yso/p238
jyx.subject.urihttp://www.yso.fi/onto/yso/p8568
jyx.subject.urihttp://www.yso.fi/onto/yso/p15295
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1063/1.5053286


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