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| Hauptseite > Publikationsdatenbank > Characteristics of the SOL turbulence structure in the first experimental campaign on W7-X with limiter configuration > print |
| Hauptseite > Publikationsdatenbank > Characteristics of the SOL turbulence structure in the first experimental campaign on W7-X with limiter configuration > print |
| 001 | 858022 | ||
| 005 | 20240708133203.0 | ||
| 024 | 7 | _ | |a 10.1063/1.5033353 |2 doi |
| 024 | 7 | _ | |a 1070-664X |2 ISSN |
| 024 | 7 | _ | |a 1089-7674 |2 ISSN |
| 024 | 7 | _ | |a 1527-2419 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2018-06966 |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Liu, S. C. |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Characteristics of the SOL turbulence structure in the first experimental campaign on W7-X with limiter configuration |
| 260 | _ | _ | |a [S.l.] |c 2018 |b American Institute of Physics |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1543839278_9828 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a In the first experimental campaign of Wendelstein 7-X (W7-X), a combined probe head mounted on the multi-purpose manipulator has been used to measure the scrape-off layer (SOL) turbulence characteristics. The preliminary experimental results are summarized to illustrate the SOL turbulence properties in the limiter configuration on W7-X. In a standard limiter configuration, significant electrostatic fluctuations can be found in the near SOL, and the dominant frequency of fluctuation power is below 100 kHz. The auto-correlation spectrum power law decay factor is α ≈ −1 below 40 kHz and α ≈ –2 between 50 and 200 kHz. A broadband spectrum appears between 240 and 380 kHz with a low spectral power density, but a high cross-correlation coefficient. The statistical characteristics of turbulence are calculated by the two-point cross-correlation technique. A clear poloidal dispersion relation is found in the spectrum S(kθ, f), propagating along the ion diamagnetic drift direction with a group velocity (below 100 kHz) about 0.56 km/s in the near SOL in the laboratory frame. The poloidal correlation length is around 5–10 mm in SOL. The turbulence phase velocity is about 0.5–1 km/s when close to the last closed flux surface, which is comparable with the poloidal E × B drift speed. |
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| 773 | _ | _ | |a 10.1063/1.5033353 |g Vol. 25, no. 7, p. 072502 - |0 PERI:(DE-600)1472746-8 |n 7 |p 072502 - |t Physics of plasmas |v 25 |y 2018 |x 1089-7674 |
| 856 | 4 | _ | |y Published on 2018-07-03. Available in OpenAccess from 2019-07-03. |u https://juser.fz-juelich.de/record/858022/files/1.5033353-1.pdf |
| 856 | 4 | _ | |y Published on 2018-07-03. Available in OpenAccess from 2019-07-03. |x pdfa |u https://juser.fz-juelich.de/record/858022/files/1.5033353-1.pdf?subformat=pdfa |
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