Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Facilities for the Energy Frontier of Nuclear Physics   The Relativistic Heavy Ion Collider at BNL has been exploring the energy
frontier of nuclear physics since 2001. Its performance, flexibility and
continued innovative upgrading can sustain its physics output for years to
come. Now, the Large Hadron Collider at CERN is about to extend the frontier
energy of laboratory nuclear collisions by more than an order of magnitude. In
the coming years, its physics reach will evolve towards still higher energy,
luminosity and varying collision species, within performance bounds set by
accelerator technology and by nuclear physics itself. Complementary high-energy
facilities will include fixed-target collisions at the CERN SPS, the FAIR
complex at GSI and possible electron-ion colliders based on CEBAF at JLAB, RHIC
at BNL or the LHC at CERN.

10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs