Scrape-off layer properties of ITER-like limiter start-up plasmas in JET

0394783 - ÚFP 2014 RIV AT eng J - Článek v odborném periodiku
Arnoux, G. - Farley, T. - Silva, C. - Devaux, S. - Firdaouss, M. - Frigione, D. - Goldston, R.J. - Gunn, J. - Horáček, Jan - Jachmich, S. - Lomas, P. J. - Marsen, S. - Matthews, G. F. - Pitts, R.A. - Stamp, M. - Stangeby, P.C. … celkem 17 autorů
Scrape-off layer properties of ITER-like limiter start-up plasmas in JET.
Nuclear Fusion. Roč. 53, č. 7 (2013), 073016-073016. ISSN 0029-5515. E-ISSN 1741-4326
Institucionální podpora: RVO:61389021
Klíčová slova: Plasma-material interactions * boundary layer effect * power exhaust * divertors * electric and magnetic measurements * tokamaks * spherical tokamaks
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.243, rok: 2013
http://iopscience.iop.org/0029-5515/53/7/073016/pdf/0029-5515_53_7_073016.pdf

Recent experiments at JET combining reciprocating probe measurements upstream and infrared thermography at the plasma-facing components (PFC) on plasmas in limiter configurations show that the common approach to predicting the power load on the limiter underestimates the heat flux at the contact point by a factor 1.5–3.The current model and scaling laws used for predicting the power load onto the first wall during limiter current ramp-up/down in ITER are uncertain and a better understanding of the heat transport to the PFCs is required.The heat loads on PFCs are usually predicted by projecting the parallel heat flux associated with scrape-off layer (SOL) properties at the outer mid-plane (upstream) along the magnetic field lines to the limiter surface and deducing the surface heat flux through a cosine law,thus ignoring any local effect of the PFC on transport within the SOL. The underestimate of the heat flux is systematic in inner wall limiter configurations, independent
Trvalý link: http://hdl.handle.net/11104/0222953