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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4084
DTSTART:20160215T180000Z
DTEND:20160215T190000Z
DTSTAMP:20260420T020413Z
LAST-MODIFIED:20160211T213750Z
LOCATION:1153 Mechanical Engineering
SUMMARY:Sustainment of a field reversed configuration with high power 
 neutral beam injection\, Plasma Physics (Physics/ECE/NE 922) Seminar\,
  Dr. Richard Magee\, Tri-Alpha
DESCRIPTION:In the C-2 field reversed configuration (FRC) experiment\,
  tangential neutral beam injection coupled with electrically-biased pl
 asma guns\, magnetic end plugs\, and advanced surface conditioning led
  to dramatic reductions in turbulence driven losses and greatly improv
 ed plasma stability.  Under such conditions\, highly reproducible\, ma
 croscopically stable FRCs with a significant fast ion population and t
 otal plasma temperature of 1keV were achieved.  In order to sustain th
 e FRC\, the C-2 device was recently upgraded with a new neutral beam i
 njection (NBI) system\, which increased the injected neutral power fro
 m 4 MW to 10+ MW\, by far the largest ever used in a compact toroidal 
 plasma experiment.  The upgraded neutral beams produce a fast ion popu
 lation that has a dramatic beneficial impact and allows the configurat
 ion to persist for time significantly longer (5+ ms) than all characte
 ristic plasma decay times.  The presentation with provide an overview 
 of the C-2U device and recent experimental results\, with a focus on t
 he diagnosis of the fast ion population <br>
\nand observations of ben
 ign fast ion driven collective effects.
URL:https://www.physics.wisc.edu/events/?id=4084
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