Stop the runaway electron beam before it runs into the wall | Sundaresan Sridhar скачать в хорошем качестве

Stop the runaway electron beam before it runs into the wall | Sundaresan Sridhar

Presenter for the talk #38 : Sundaresan Sridhar, IRFM 💬 Contact us directly on [email protected] or use the comments to ask questions! Visit the website https://fusionep-talks.egyplasma.com/​ for getting updates about the upcoming events. Date: November 27th, 2020 Synopsis: Relativistic runaway electron (RE) beams are one of the main consequences of disruptions and they carry the risk of in-vessel component damage. The prevention and control of the RE are of prime importance. The current strategy for runaway electrons is to avoid their generation by a massive material injection (MMI). If their generation cannot be avoided, a second MMI will be used to mitigate the generated RE beam. But the problem is, a background plasma of MMI impurities is formed which make the second MMI inefficient to mitigate RE beams, as observed in the JET tokamak. This talk aims to understand the physics of interaction between the RE beam and the mitigation MMI in the presence of a cold background plasma. Chapters 00:00:03 - Speaker biography 00:01:20 - Motivation 00:02:56 - Plasma disruptions 00:04:40 - Runaway electrons 00:06:24 - Runaway electron mitigation strategy 00:08:41 - Cold background plasma 00:10:18 - Outline of the talk 00:10:41 - Experimental characterization of background plasma 00:14:35 - Power balance equation for the background plasma 00:18:48 - Simulation of the background plasma using 1D Diffusion model 00:32:35 - Summary 00:34:36 - Q&A session 🌍 Fusion-EP Talks is a student-led seminar of the European Master In Fusion Science and Engineering program - 📚 join our international degree @ http://www.em-master-fusion.org