Speaker
Alexander Millar
(Max Planck Institute for Phyiscs)
Description
We propose a new strategy to search for dark matter axions in the mass range of 40--400 $\mu$eV by introducing dielectric haloscopes, which consist of dielectric disks placed in a magnetic field. The changing dielectric media cause discontinuities in the axion-induced electric field, leading to the generation of propagating electromagnetic waves to satisfy the continuity requirements at the interfaces. Large-area disks with adjustable distances boost the microwave signal (10-100 GHz) to an observable level and allow one to scan over a broad axion mass range. A sensitivity to QCD axion models is conceivable with 80 disks of 1 m$^2$ area contained in a $10$ Tesla field.
Primary authors
Alexander Millar
(Max Planck Institute for Phyiscs)
Allen Christopher Caldwell
(Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
Bela Majorovits
(MPI for Physics)
Frank Daniel Steffen
(Max-Planck-Institute of Physics)
Frank Simon
(Max-Planck-Institut fuer Physik)
Georg Raffelt
(MPI Physik, Munich)
Georgi Dvali
Javier Redondo
(LMU/MPP Munich)
Olaf Reimann
(Max Planck Institute)
