Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam
  via laser Compton scattering   We have constructed a new laser-Compton-scattering facility, called the LEPS2
beamline, at the 8-GeV electron storage ring, SPring-8. This facility provides
a linearly polarized photon beam in a tagged energy range of 1.3--2.4 GeV.
Thanks to a small divergence of the low-emittance storage-ring electrons, the
tagged photon beam has a size (sigma) suppressed to about 4 mm even after it
travels about 130 m to the experimental building that is independent of the
storage ring building and contains large detector systems. This beamline is
designed to achieve a photon beam intensity higher than that of the first
laser-Compton-scattering beamline at SPring-8 by adopting the simultaneous
injection of up to four high-power laser beams and increasing a transmittance
for the long photon-beam path up to about 77%. The new beamline is under
operation for hadron photoproduction experiments.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con