Direct Dark Matter Searches and the EDELWEISS-II experiment
Direct Dark Matter Searches and the EDELWEISS-II experiment
Direct Dark Matter Searches and the EDELWEISS-II experiment
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! Active rejection: most bkg evts<br />
are e - recoils ($, %); WIMP<br />
signal = nuclear recoil<br />
! Large dE/dx,<br />
short track length<br />
(~10 nm in solid,<br />
directionnality difficult)<br />
! Solid matrix directly<br />
excited: lower ionization<br />
<strong>and</strong> scintillation yields:<br />
combine 2 signals<br />
! Pulse shape discrimination<br />
! Beware of neutron scattering<br />
background (polyethylene<br />
shields, cosmic muon vetos,<br />
self-shielding / granularity)<br />
<strong>Searches</strong> techniques & bkg rejection<br />
CDMS<br />
<strong>EDELWEISS</strong><br />
SuperCDMS<br />
Heat<br />
EURECA<br />
Ionization Scintillation<br />
XENON<br />
ZEPLIN<br />
ARDM<br />
LUX<br />
Metastable<br />
WARP<br />
CRESST<br />
PICASSO<br />
SIMPLE<br />
COUPP<br />
Pulse Shape<br />
timing<br />
DEAP<br />
KIMS<br />
DAMA<br />
March 11th, 2009 Moriond EW La Thuile - DM searches 8
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