Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploiting higher-order resonant modes for axion haloscopes   The haloscope is one of the most sensitive approaches to the QCD axion
physics within the region where the axion is considered to be a dark matter
candidate. Current experimental sensitivities, which rely on the lowest
fundamental TM010 mode of a cylindrical cavity, are limited to relatively low
mass regions. Exploiting higher-order resonant modes would be beneficial
because it will enable us to extend the search range with no volume loss and
higher quality factors. This approach has been discarded mainly because of the
significant degradation of form factor, and difficulty with frequency tuning.
Here we introduce a new tuning mechanism concept which both enhances the form
factor and yields reasonable frequency tunability. A proof of concept
demonstration verified that this design is feasible for high mass axion search
experiments.

18
The categories of this paper are: econ
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat