Influence of non-local thermodynamic equilibrium and Zeeman effects on magnetic equilibrium reconstruction using spectral motional Stark effect diagnostic
dc.contributor.author | Reimer, R. | |
dc.contributor.author | Marchuk, O. | |
dc.contributor.author | Geiger, B. | |
dc.contributor.author | McCarthy, Patrick J. | |
dc.contributor.author | Dunne, Michael G. | |
dc.contributor.author | Hobirk, J. | |
dc.contributor.author | Wolf, R. | |
dc.contributor.author | ASDEX Upgrade Team | |
dc.contributor.funder | H2020 Euratom | en |
dc.date.accessioned | 2018-04-25T11:42:20Z | |
dc.date.available | 2018-04-25T11:42:20Z | |
dc.date.issued | 2017-08-09 | |
dc.date.updated | 2018-04-09T17:32:47Z | |
dc.description.abstract | The Motional Stark Effect (MSE) diagnostic is a well established technique to infer the local internal magnetic field in fusion plasmas. In this paper, the existing forward model which describes the MSE data is extended by the Zeeman effect, fine-structure, and relativistic corrections in the interpretation of the MSE spectra for different experimental conditions at the tokamak ASDEX Upgrade. The contribution of the non-Local Thermodynamic Equilibrium (non-LTE) populations among the magnetic sub-levels and the Zeeman effect on the derived plasma parameters is different. The obtained pitch angle is changed by 3°…4° and by 0.5°…1° including the non-LTE and the Zeeman effects into the standard statistical MSE model. The total correction is about 4°. Moreover, the variation of the magnetic field strength is significantly changed by 2.2% due to the Zeeman effect only. While the data on the derived pitch angle still could not be tested against the other diagnostics, the results from an equilibrium reconstruction solver confirm the obtained values for magnetic field strength. | en |
dc.description.status | Peer reviewed | en |
dc.description.version | Published Version | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.articleid | 083509 | |
dc.identifier.citation | Reimer, R., Marchuk, O., Geiger, B., McCarthy, P. J., Dunne, M., Hobirk, J., Wolf, R. and the ASDEX Upgrade Team (2017) 'Influence of non-local thermodynamic equilibrium and Zeeman effects on magnetic equilibrium reconstruction using spectral motional Stark effect diagnostic', Review of Scientific Instruments, 88(8), 083509 (10pp). doi:10.1063/1.4994889 | en |
dc.identifier.doi | 10.1063/1.4994889 | |
dc.identifier.endpage | 10 | en |
dc.identifier.issn | 0034-6748 | |
dc.identifier.issn | 1089-7623 | |
dc.identifier.issued | 8 | en |
dc.identifier.journaltitle | Review of Scientific Instruments | en |
dc.identifier.startpage | 1 | en |
dc.identifier.uri | https://hdl.handle.net/10468/5872 | |
dc.identifier.volume | 88 | en |
dc.language.iso | en | en |
dc.publisher | AIP Publishing | en |
dc.relation.project | info:eu-repo/grantAgreement/EC/H2020::COFUND-EJP/633053/EU/Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium/EUROfusion | en |
dc.rights | © 2017, the Authors. The following article appeared in Review of Scientific Instruments, 88(8), 083509 (10pp), doi:10.1063/1.4994889, and may be found at https://aip.scitation.org/doi/10.1063/1.4994889 | en |
dc.subject | Stark effect | en |
dc.subject | Thermodynamics | en |
dc.subject | Zeeman effect | en |
dc.title | Influence of non-local thermodynamic equilibrium and Zeeman effects on magnetic equilibrium reconstruction using spectral motional Stark effect diagnostic | en |
dc.type | Article (peer-reviewed) | en |