Poloidal Asymmetry in the Narrow Heat Flux Feature in the TCV Scrape-Off Layer.

0478614 - ÚFP 2018 RIV US eng J - Journal Article
Tsui, C.K. - Boedo, J. A. - Halpern, F.D. - Loizu, J. - Nespoli, F. - Horáček, Jan - Labit, B. - Morales, J. - Reimerdes, H. - Ricci, P. - Theiler, C. - Coda, S. - Duval, B. P. - Furno, I.
Poloidal Asymmetry in the Narrow Heat Flux Feature in the TCV Scrape-Off Layer.
Physics of Plasmas. Roč. 24, č. 6 (2017), č. článku 062508. ISSN 1070-664X. E-ISSN 1089-7674
R&D Projects: GA ČR(CZ) GA15-10723S
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : Scrape-Off Layer * TCV * tokamak * plasma
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.941, year: 2017
http://dx.doi.org/10.1063/1.4985075

Heat flux profiles inferred from a reciprocating probe at the outer midplane of the TCV tokamak during inner wall limited discharges feature radial fall-off lengths with the so-called narrow feature. It is significantlywider on the outboard side compared with that measured on the inner wall by infrared thermography, so it is difficult to discern from the main SOL. Fraction of the power contained in the narrow feature matches between inboard and outboard measurements, and they scale together with plasma current Ip, suggesting that we are observing the same phenomenon. This paper therefore demonstrates consistency between the measurements of the narrow feature on the inboard and outboard sides of the plasma, as well as consistency between the measurements, non-linear turbulence simulations, and analytical models of the narrow feature arising from sheared ExB flows.
Permanent Link: http://hdl.handle.net/11104/0275181