Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The XENON1T Dark Matter Experiment   The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is
the first WIMP dark matter detector operating with a liquid xenon target mass
above the ton-scale. Out of its 3.2t liquid xenon inventory, 2.0t constitute
the active target of the dual-phase time projection chamber. The scintillation
and ionization signals from particle interactions are detected with
low-background photomultipliers. This article describes the XENON1T instrument
and its subsystems as well as strategies to achieve an unprecedented low
background level. First results on the detector response and the performance of
the subsystems are also presented.

19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph