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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-2329
DTSTART:20120202T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T062252Z
LAST-MODIFIED:20111025T195314Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Recent Results from the COUPP Dark Matter Search\, NPAC (Nucle
 ar/Particle/Astro/Cosmo) Forum\, Andrew Sonnenschein\, Fermilab
DESCRIPTION:Bubble chambers have emerged as promising detectors for We
 akly Interacting Massive dark matter Particles (WIMPs). A very high de
 gree of background discrimination can be achieved by tuning the thermo
 dynamic parameters to avoid nucleation by electron recoils\, while mai
 ntaining low nuclear-recoil thresholds. Nuclear recoils from WIMPs can
  be discriminated from alpha particle induced events by analysis of th
 e acoustic pulses produced by the expanding bubbles. The COUPP collabo
 ration operated a 4-kg CF3I bubble chamber at SNOLAB in 2010-2011 and 
 is in the process of commissioning a 60-kg chamber. Initial data from 
 SNOLAB demonstrate reduced alpha backgrounds and greatly improved sens
 itivity to WIMPs.
URL:https://www.physics.wisc.edu/events/?id=2329
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