Events During the Week of February 4th through February 11th, 2024
Monday, February 5th, 2024
- Magnetohydrodynamics of tokamak disruptions
- Time: 12:00 pm - 1:15 pm
- Place: 1227 Engineering Hall
- Speaker: Prof. Carl Sovinec, UW-Madison
- Abstract: Full-scale operation of the ITER experiment will produce plasma thermal energy and releasable magnetic energy on the order of hundreds of mega-Joules. Unplanned disruptions to these discharges will be capable of causing significant material damage to plasma-facing components and electrically conducting structures. As such, the susceptibility to disruptions poses the greatest challenge for the tokamak as a fusion reactor concept. In this presentation, operational limits and the typical sequence of dynamics during disruptions are reviewed, as is the physics behind localized heat deposition, electromechanical forcing, and runaway electron (RE) generation. Extended-magnetohydrodynamic (MHD) numerical simulations provide insight into the physics of tokamak disruptions. Results computed with the NIMROD code (nimrodteam.org) describe profile relaxation and surface-force densities during asymmetric vertical displacement. Other simulations show the importance of MHD for mitigation with massive gas injection and shattered pellet injection. The confinement of REs and their influence on MHD is also considered.
- Host: Prof. Carl Sovinec
Tuesday, February 6th, 2024
- No events scheduled
Wednesday, February 7th, 2024
- No events scheduled
Thursday, February 8th, 2024
- No events scheduled
Friday, February 9th, 2024
- No events scheduled