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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:2
UID:UW-Physics-Event-9394
DTSTART:20251027T170000Z
DTEND:20251027T180000Z
DTSTAMP:20260413T120230Z
LAST-MODIFIED:20251024T172639Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Operation and Performance of the Centrifugal Mirror Fusion Exp
 eriment\, Plasma Physics (Physics/ECE/NE 922) Seminar\, Carlos Rovero-
 Talamas\, University of Maryland\, Baltimore County
DESCRIPTION:The Centrifugal Mirror Fusion Experiment (CMFX)\, a resear
 ch effort led by UMBC in partnership with the University of Maryland\,
  College Park\, has been funded since 2020 by ARPA-E to test the physi
 cs of centrifugal mirrors and demonstrate magnetic confinement at para
 meters relevant to sustained fusion production. The CMFX is the second
 -generation centrifugal mirror at Maryland\, but the first one in the 
 world to use superconducting coils\, with a maximum field of 3-T. It i
 s also the first one to achieve sustained operation (limited only by t
 he passive cooling of components). Temperatures\, densities\, and mome
 ntum confinement times in CMFX are now high enough to produce small am
 ounts of fusion energy when experimenting with deuterium plasmas. The 
 applied voltages result in supersonic E x B rotation\, with velocities
  in the azimuthal direction exceeding 1\,700 km/s in deuterium plasmas
 .  The high velocities also generate flow shear and heating\, resultin
 g in total sustained neutron productions estimated at 10^7 neutrons pe
 r second. These neutron rates indicate plasma temperatures must be aro
 und 1 keV for plasma densities of 2 – 4 x 10^18 m^-3. Neutral gas ca
 n be added in bursts during plasma discharges\, leading to an increase
  in density and neutron production that slowly decays with confinement
  times of tens to hundreds of milliseconds. Experiments are underway w
 ith two He-3 detectors to time-resolve the neutron production with res
 pect to applied voltage\, and to spatially resolve the plasma region p
 roducing the neutrons.  
URL:https://www.physics.wisc.edu/events/?id=9394
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