Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Physics Program at MAMI-C   In February 2007, the fourth stage of the Mainz Microtron, MAMI-C, started
operations with a first experiment. The new Harmonic Double-Sided Microtron
delivers an electron beam with energies up to 1.5 GeV while preserving the
excellent beam quality of the previous stages. The experimental program at MAMI
is focused on studies of the hadron structure in the domain of non-perturbative
QCD. In this paper, a few prominent selections of the extensive physics program
at MAMI-C will be presented.

11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an