dc.contributor.author | Dorris, James R. | |
dc.contributor.author | Rost, Jon C. | |
dc.contributor.author | Porkolab, Miklos | |
dc.date.accessioned | 2010-03-01T18:31:49Z | |
dc.date.available | 2010-03-01T18:31:49Z | |
dc.date.issued | 2009-02 | |
dc.date.submitted | 2008-06 | |
dc.identifier.issn | 0034-6748 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/51858 | |
dc.description.abstract | A novel rotating mask system has been designed and implemented on the DIII-D phase contrast imaging (PCI) diagnostic to produce the first spatially localized PCI measurements of a tokamak plasma. The localization technique makes use of the variation in the magnetic field component perpendicular to the viewing chord as a function of chord height. This new capability provides measurements in the range of 2<k<30 cm[superscript −1], 10 kHz<f<10 MHz, and 0.7<r/a<1. This technique provides a spatial resolution of 10 cm at k=15 cm[superscript −1] and can realistically provide measurements at a rate of 10 profiles/s. Calibration measurements show accurate characterization of the system transfer function making feasible a time dependent analysis that results in improved localization. Initial measurements show turbulence to peak near the plasma edge. This upgrade is part of a broader program to operate the DIII-D PCI at wave numbers up to 40 cm[superscript −1] to probe electron scale turbulence in the plasma core. | en |
dc.description.sponsorship | General Atomics | en |
dc.description.sponsorship | U.S. Department of Energy | en |
dc.language.iso | en_US | |
dc.publisher | American Institute of Physics | en |
dc.relation.isversionof | http://dx.doi.org/10.1063/1.3065094 | en |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en |
dc.source | Carol Arlington | en |
dc.title | Localized measurement of short wavelength plasma fluctuations with the DIII-D phase contrast imaging diagnostic | en |
dc.type | Article | en |
dc.identifier.citation | Dorris, J. R., J. C. Rost, and M. Porkolab. “Localized measurement of short wavelength plasma fluctuations with the DIII-D phase contrast imaging diagnostic.” Review of Scientific Instruments 80.2 (2009): 023503-10. ©2009 American Institute of Physics. | en |
dc.contributor.department | Massachusetts Institute of Technology. Plasma Science and Fusion Center | en_US |
dc.contributor.approver | Porkolab, Miklos | |
dc.contributor.mitauthor | Dorris, James R. | |
dc.contributor.mitauthor | Rost, Jon C. | |
dc.contributor.mitauthor | Porkolab, Miklos | |
dc.relation.journal | Review of Scientific Instruments | en |
dc.eprint.version | Final published version | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en |
eprint.grantNumber | DE-FG02-94ER54235 | en |
eprint.grantNumber | DE-FC02-04ER54698 | en |
dspace.orderedauthors | Dorris, J. R.; Rost, J. C.; Porkolab, M. | en |
dc.identifier.orcid | https://orcid.org/0000-0002-9518-4097 | |
mit.license | PUBLISHER_POLICY | en |
mit.metadata.status | Complete | |