Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS

D. I. Réfy, S. Zoletnik, O. Grover, J. Seidl, M. Hron, D. Dunai, G. Anda, A. Bencze, P. Hacek, J. Krbec, V. Weinzettl

Research output: Conference contribution

Abstract

Our analysis revealed that the cLCO close to the L-H transition at COMPASS modulates the electron density profile at the pedestal mostly at the foot and in the SOL. The density fluctuations in the 50-200 kHz band in the pedestal are also modulated, the fluctuation amplitude is approximately in opposite phase to the density gradient. The flattening of the profile happens simultaneously with density increase in the SOL. The poloidal flow velocity of turbulence is also modulated by the cLCO, but no clear phase relation can be drawn, and further investigation of the phenomenon is needed. Also, the density pedestal dynamics similar with findings at JET M-mode and AUG I-phase. [4].

Original languageEnglish
Title of host publication44th EPS Conference on Plasma Physics, EPS 2017
EditorsA. Bret, M. Fajardo, E. Westerhof, A. Melzer, B. Dromey, C. Riconda
PublisherEuropean Physical Society (EPS)
ISBN (Print)9781510849303
Publication statusPublished - jan. 1 2017
Event44th European Physical Society Conference on Plasma Physics, EPS 2017 - Belfast, United Kingdom
Duration: jún. 26 2017jún. 30 2017

Other

Other44th European Physical Society Conference on Plasma Physics, EPS 2017
CountryUnited Kingdom
CityBelfast
Period6/26/176/30/17

Fingerprint

velocity modulation
COMPASS (programming language)
electron density profiles
flow velocity
oscillations
thresholds
flattening
turbulence
gradients
profiles

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Réfy, D. I., Zoletnik, S., Grover, O., Seidl, J., Hron, M., Dunai, D., ... Weinzettl, V. (2017). Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. In A. Bret, M. Fajardo, E. Westerhof, A. Melzer, B. Dromey, & C. Riconda (Eds.), 44th EPS Conference on Plasma Physics, EPS 2017 [P4.178] European Physical Society (EPS).

Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. / Réfy, D. I.; Zoletnik, S.; Grover, O.; Seidl, J.; Hron, M.; Dunai, D.; Anda, G.; Bencze, A.; Hacek, P.; Krbec, J.; Weinzettl, V.

44th EPS Conference on Plasma Physics, EPS 2017. ed. / A. Bret; M. Fajardo; E. Westerhof; A. Melzer; B. Dromey; C. Riconda. European Physical Society (EPS), 2017. P4.178.

Research output: Conference contribution

Réfy, DI, Zoletnik, S, Grover, O, Seidl, J, Hron, M, Dunai, D, Anda, G, Bencze, A, Hacek, P, Krbec, J & Weinzettl, V 2017, Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. in A Bret, M Fajardo, E Westerhof, A Melzer, B Dromey & C Riconda (eds), 44th EPS Conference on Plasma Physics, EPS 2017., P4.178, European Physical Society (EPS), 44th European Physical Society Conference on Plasma Physics, EPS 2017, Belfast, United Kingdom, 6/26/17.
Réfy DI, Zoletnik S, Grover O, Seidl J, Hron M, Dunai D et al. Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. In Bret A, Fajardo M, Westerhof E, Melzer A, Dromey B, Riconda C, editors, 44th EPS Conference on Plasma Physics, EPS 2017. European Physical Society (EPS). 2017. P4.178
Réfy, D. I. ; Zoletnik, S. ; Grover, O. ; Seidl, J. ; Hron, M. ; Dunai, D. ; Anda, G. ; Bencze, A. ; Hacek, P. ; Krbec, J. ; Weinzettl, V. / Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. 44th EPS Conference on Plasma Physics, EPS 2017. editor / A. Bret ; M. Fajardo ; E. Westerhof ; A. Melzer ; B. Dromey ; C. Riconda. European Physical Society (EPS), 2017.
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