Non-linear simulations of the TCV Scrape-Off Layer. (August 2017)

• Record Type: Journal Article
• Authors: Nespoli, F.; Furno, I.; Halpern, F.D.; Labit, B.; Loizu, J.; Ricci, P.; Riva, F.
• Is Part Of: Nuclear materials and energy. Volume 12(2017)
• Page Start: 1205
• Page End: 1208
• Publication Date: 2017-08
• Subjects: Plasma -- Scrape-Off Layer -- TCV -- GBS simulations heat flux; Nuclear energy -- Periodicals; Nuclear fuels -- Periodicals; Nuclear reactors -- Materials -- Periodicals; Radioactive substances -- Periodicals; 621.4833
• DOI: 10.1016/j.nme.2016.10.019
• Languages: English
• ISSNs: 2352-1791

Abstract

Highlights: A nonlinear numerical simulation of a the Scrape-Off Layer of a TCV discharge is performed. The numerical results are compared with the experimental ones finding qualitative agreement. The results of a second simulation with 40 times higher resistivity are discussed. Abstract: To investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel heat flux profiles on the limiter agree qualitatively with the experimental ones obtained by means of infrared thermography, showing a double scale length. Non-ambipolar currents are found to flow to the limiter, consistently with the experiments. The contribution of the latter to the total heat flux is discussed. The results of a second simulation identical to the first one but with 40 times higher resistivity are also discussed.