Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reactor antineutrino monitoring with a plastic scintillator array as a
  new safeguards method   We developed a segmented reactor-antineutrino detector made of plastic
scintillators for application as a tool in nuclear safeguards inspection and
performed mostly unmanned field operations at a commercial power plant reactor.
At a position outside the reactor building, we measured the difference in
reactor antineutrino flux above the ground when the reactor was active and
inactive.

6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
9
The categories of this paper are: nlin