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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-9157
DTSTART:20250331T170000Z
DTEND:20250331T181500Z
DTSTAMP:20260413T151507Z
LAST-MODIFIED:20250402T153948Z
LOCATION:1227 Engineering Hall
SUMMARY:Effects of magnetic geometry and neutrals in gyrokinetic simul
 ations of magnetized boundary plasmas\, Plasma Physics (Physics/ECE/NE
  922) Seminar\, Tess Bernard\, General Atomics
DESCRIPTION:Successful fusion pilot plant (FPP) design hinges upon the
  ability to predict and control exhaust conditions\, to maximize the l
 ifetime of plasma-facing components. This work describes a pathway tow
 ard high-fidelity\, first-principles simulations with predictive capab
 ilities for plasma particle fueling and detachment. It presents the co
 upling of a continuum full-f gyrokinetic turbulence model with a 6D co
 ntinuum model for kinetic neutrals\, carried out using the Gkeyll code
 \, which has been extended to include general geometry capabilities us
 ing a canonical Poisson Bracket formalism. A successful exhaust design
  will rely on both neutral interactions and plasma shaping in order to
  reduce the flux of heat and particles to the divertor without degradi
 ng core plasma conditions. We explore these effects through simulation
 s of DIII-D inner-wall-limited (IWL) plasmas. For example\, negative t
 riangularity plasmas exhibit good confinement properties without the p
 resence of disruptive edge localized modes (ELMs). We present the diff
 erences in profiles and turbulence dynamics in negative and positive t
 riangularity geometries. Results demonstrate good agreement with exper
 imental data.<br>
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URL:https://www.physics.wisc.edu/events/?id=9157
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