Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of scintillation light collection, production and propagation in a
  4 tonne dual-phase LArTPC   The $3 \times 1 \times 1$ m$^3$ demonstrator is a dual phase liquid argon
time projection chamber that has recorded cosmic rays events in 2017 at CERN.
The light signal in these detectors is crucial to provide precise timing
capabilities. The performances of the photon detection system, composed of five
PMTs, are discussed. The collected scintillation and electroluminescence light
created by passing particles has been studied in various detector conditions.
In particular, the scintillation light production and propagation processes
have been analyzed and compared to simulations, improving the understanding of
some liquid argon properties.

10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci