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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-9669
DTSTART:20260427T170000Z
DTEND:20260427T180000Z
DTSTAMP:20260426T193803Z
LAST-MODIFIED:20260426T171019Z
LOCATION:Engineering Hall - 1227 
SUMMARY:How low recycling lithium walls change the tokamak\, Plasma Ph
 ysics (Physics/ECE/NE 922) Seminar\, Dick Majeski \, Princeton Plasma 
 Physics Laboratory
DESCRIPTION:Almost all tokamaks operate in a regime where the recyclin
 g coefficient approaches 1. The recycling coefficient is defined\, in 
 the absence of other fueling\, simply as (the # of particles entering 
 the plasma)/(the # of particles exiting the plasma). WIth a high recyc
 ling wall\, plasma which diffuses across the last closed flux surface 
 in a tokamak\, and is lost from the scrape off layer\, is reflected or
  desorbed as ions\, electrons\, and neutral atoms from the limiters\, 
 divertor plates\, and other plasma facing surfaces. The LIthium Tokama
 k eXperiment (LTX) is - or was -  the only magnetic confinement devic
 e to have demonstrated operation with a measured recycling coefficient
  < 0.5\, through the use of clean\, solid or liquid\, lithium walls an
 d plasma limiting surfaces. Here we discuss the modifications to the p
 lasma core and edge which result from the imposition of a low recyclin
 g lithium boundary on a tokamak plasma\, as documented in LTX.
URL:https://www.physics.wisc.edu/events/?id=9669
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