Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Next White (NEW) detector   Conceived to host 5 kg of xenon at a pressure of 15 bar in the fiducial
volume, the NEXT- White (NEW) apparatus is currently the largest high pressure
xenon gas TPC using electroluminescent amplification in the world. It is also a
1:2 scale model of the NEXT-100 detector scheduled to start searching for
$\beta\beta 0\nu$ decays in 136Xe in 2019. Both detectors measure the energy of
the event using a plane of photomultipliers located behind a transparent
cathode. They can also reconstruct the trajectories of charged tracks in the
dense gas of the TPC with the help of a plane of silicon photomultipliers
located behind the anode. A sophisticated gas system, common to both detectors,
allows the high gas purity needed to guarantee a long electron lifetime.
NEXT-White has been operating since October 2017 at the Canfranc Underground
Laboratory (LSC), in Spain. This paper describes the detector and associated
infrastructures.

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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: comp-gas