Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large-Volume Centimeter-Wave Cavities for Axion Searches   The scan rate of an axion haloscope is proportional to the square of the
cavity volume. In this paper, a new class of thin-shell cavities are proposed
to search for axionic dark matter. These cavities feature active volume much
larger (>20X) than that of a conventional cylindrical haloscope, comparable
quality factor Q, and a similar frequency tuning range. Full 3D numerical
finite-element analyses have been used to show that the TM_010 eigenmodes are
singly polarized throughout the volume of the cavity and can facilitate
axion-photon conversion in uniform magnetic field produced by a superconducting
solenoid. To mitigate spurious mode crowding and volume loss due to
localization, a pre-amplification binary summing network will be used for
coupling. Because of the favorable frequency-scaling, the new cavities are most
suitable for centimeter-wavelength (~ 10-100 GHz), corresponding to the
promising post-inflation axion production window. In this frequency range, the
tight machining tolerances required for high-Q thin-shell cavities are
achievable with standard machining techniques for near-infrared mirrors.

26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg