Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for light dark matter with the MESA accelerator   At the Institute for Nuclear Physics of the Johannes Gutenberg University in
Mainz, the MESA facility is currently being constructed. At its core there is a
new superconducting energy-recovery linac which will provide intense electron
beams for precision experiments in subatomic physics. An important part of the
MESA physics program consists in the search for a "dark sector" which is a
candidate explanation for the longstanding dark matter problem. This report
will highlight the MESA dark sector program, and in particular two experiments
will be described. The first one, MAGIX, is a two-spectrometer setup employing
an internal gas-jet target installed on a recirculation arc of MESA. The second
one is a beam-dump experiment for directly detecting dark matter particles. The
experiments are in the R\&D phase and the current status and future prospects
will be presented.

12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math