Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: GEANT4 simulation of the neutron background of the C$_6$D$_6$ set-up for
  capture studies at n_TOF   The neutron sensitivity of the C$_6$D$_6$ detector setup used at n_TOF for
capture measurements has been studied by means of detailed GEANT4 simulations.
A realistic software replica of the entire n_TOF experimental hall, including
the neutron beam line, sample, detector supports and the walls of the
experimental area has been implemented in the simulations. The simulations have
been analyzed in the same manner as experimental data, in particular by
applying the Pulse Height Weighting Technique. The simulations have been
validated against a measurement of the neutron background performed with a
$^\mathrm{nat}$C sample, showing an excellent agreement above 1 keV. At lower
energies, an additional component in the measured $^\mathrm{nat}$C yield has
been discovered, which prevents the use of $^\mathrm{nat}$C data for neutron
background estimates at neutron energies below a few hundred eV. The origin and
time structure of the neutron background have been derived from the
simulations. Examples of the neutron background for two different samples are
demonstrating the important role of accurate simulations of the neutron
background in capture cross section measurements.

35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin