Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The SHiP experiment at the proposed CERN SPS Beam Dump Facility   The Search for Hidden Particles (SHiP) Collaboration has proposed a
general-purpose experimental facility operating in beam-dump mode at the CERN
SPS accelerator to search for light, feebly interacting particles. In the
baseline configuration, the SHiP experiment incorporates two complementary
detectors. The upstream detector is designed for recoil signatures of light
dark matter (LDM) scattering and for neutrino physics, in particular with tau
neutrinos. It consists of a spectrometer magnet housing a layered detector
system with high-density LDM/neutrino target plates, emulsion-film technology
and electronic high-precision tracking. The downstream detector system aims at
measuring visible decays of feebly interacting particles to both fully
reconstructed final states and to partially reconstructed final states with
neutrinos, in a nearly background-free environment. The detector consists of a
50\m long decay volume under vacuum followed by a spectrometer and particle
identification system with a rectangular acceptance of 5\,m in width and 10\,m
in height. Using the high-intensity beam of 400\gev protons, the experiment
aims at profiting from the $4\times 10^{19}$ protons per year that are
currently unexploited at the SPS, over a period of 5--10 years. This allows
probing dark photons, dark scalars and pseudo-scalars, and heavy neutral
leptons with GeV-scale masses at sensitivities that largely exceed those of
existing and projected experiments. The sensitivity to light dark matter
reaches well below the dark matter relic density limits in the range from a few
\mevcc up to 200\mevcc, and it will be possible to study tau neutrino
interactions with unprecedented statistics. This paper describes the SHiP
baseline experiment setup and the detector systems with performance results
from prototypes in test beams. The expected detector performance from
simulation is summarised at the end.

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The categories of this paper are: nucl-th
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio