Speaker
Dr
Andrei Lobanov
(MPIfR Bonn / Universität Hamburg)
Description
We present here a modification of the spherical reflector approach
proposed for broadband searches for axion dark matter. The new concept
foresees the use of a permanently magnetized surface ({\em magnetized
converter}) employed for axion/ALP$-$photon conversion. The magnetized
converter comprises a two-dimensional Halbach array providing a
sufficiently homogeneous magnetic field with a $B_{||}\sim$$1\,$T component parallel to the
surface and concentrated within about 1$\,$cm height above it. This enables
effective conversion of dark matter axions and ALPs with masses above $\approx
$$80\,\mu$eV (20 GHz). Based on this modification, a conceptual design
for broadband radiometric axion searches (BRASS) has been developed,
aiming at providing an experimental facility for WISP dark matter
searches in the 20$\,$GHz$-$1$\,$THz (0.08$-$4 meV) range. Details of the
experiment design, expected sensitivities to WISP dark matter, and present plans
for constructing the first prototype setup will be discussed.
Summary
A conceptual design for broadband radiometric axion searches (BRASS) employing a permanently magnetized surface for stimulating the axion$-$photon conversion in a 0.08$-$4$\,$meV mass range will be introduced and plans for construction of the first prototype will be discussed.
Primary author
Dr
Andrei Lobanov
(MPIfR Bonn / Universität Hamburg)
Co-authors
Andreas Ringwald
(DESY)
Prof.
Anton Zensus
(Max-Planck-Institut für Radioastronomie)
Prof.
Arne Jacob
(Hamburg University of Technology)
Prof.
Dieter Horns
(Univ. Hamburg)
Prof.
Erika Garutti
(University of Hamburg)
Prof.
Guenter Sigl
(University of Hamburg)
Prof.
Jochen Liske
(Universität Hamburg)
Prof.
Karl Menten
(Max-Planck-Institut für Radioastronomie)
Mr
Le Hoang Nguyen
(Uni Hamburg)
Prof.
Michael Kramer
(Max-Planck-Institut für Radioastronomie)
Dr
Paulo Freire
(Max-Planck-Institut für Radioastronomie)
