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SUMMARY:Dielectric haloscopes: a new way to search for axion dark matter -
  Alex Millar\, Munich
DTSTART:20180316T160000Z
DTEND:20180316T170000Z
UID:TALK98899@talks.cam.ac.uk
CONTACT:Francesca Chadha-Day
DESCRIPTION:We propose a new strategy to search for dark matter axions in 
 the mass range of 40–400μeV by introducing dielectric haloscopes\, whic
 h consist of dielectric disks placed in a magnetic field. When an interfac
 e between different dielectric media is inside a magnetic field\, the osci
 llating axion field acts as a source of electromagnetic waves\, which emer
 ge in both directions perpendicular to the surface. The emission rate can 
 be boosted by multiple layers judiciously placed to achieve constructive i
 nterference and by a large transverse area.  A sensitivity to QCD axion mo
 dels is conceivable with 80 disks of 1 m2 area contained in a 10 Tesla fie
 ld. This concept is being pursued by the new MADMAX Collaboration.
LOCATION:Ryle Seminar Room no. 930\, Rutherford Building\, Cavendish Labor
 atory
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