Tokamaks and Pinches (History, Tokamak Taxonomy)
Tokamaks and pinches (history, tokamak taxonomy) Gergő Pokol BME NTI Fusion devices 9. March 2020 Gergő Pokol: Tokamaks and pinches 1. Take your mobile phone or laptop 2. WiFi password: wigner2/wigner2008 – or mobilnet 3. Browser: Kahoot.it 4. Code on screen 5. Name: Neptun code !!! 6. Evaluation: – Good answer +1 score – Winner of Kahoot +1 score At the end of semester: normalize with number of questions to get %. 2 Fusion devices, 9. March 2020 Gergő Pokol: Tokamaks and pinches Provisional program Date Lecturer Topic 10. FebruaryPokol Theory review (fuel flow, magnetic confinement, transport, tokamak, stellarator) Technology review (vacuum, magnetic field, plasma heating, current drive, plasma 17. FebruaryPokol diagnostics) 24. FebruaryVeres Stellarators (history, Wendelstein line, stellarator taxonomy) 2. MarchPokol Wendelstein 7-X stellarator 9. MarchPokol Tokamaks and piches (history, tokamak taxonomy) 16. MarchPokol JET (goals, structure, status) 23. MarchPokol ITER (goals, structure, status) 30. MarchPokol DEMO, Fusion Roadmap 6. AprilPokol Mid-term exam 20. AprilPokol Middle-sized tokamak program 27. AprilPokol Spheromaks, spherical tokamaks, US fusion program 4. MayPokol Far East superconducting tokamaks 11. MayPokol Tokamak simulation exercise 18. MayPokol Final exam 3 Fusion devices, 9. March 2020 Gergő Pokol: Tokamaks and pinches Pinch effect Pinch effect discovered in 1904 in liquid metals: Radial compressing force in a conductor caused by current. The magnetic field strength: The force balance : Sausage instability Kink instability 4 Fusion devices, 9. March 2020 Gergő Pokol: Tokamaks and pinches Pinch devices - types Toroidal Z-pinch: high current, high pressure plasma stabilized by a toroidal magnetic field. q-pinch: stable configuration, but problems with ends. Racetrack configuration unstable.
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