Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prototyping Hexagonal Light Concentrators Using High-Reflectance
  Specular Films for the Large-Sized Telescopes of the Cherenkov Telescope
  Array   We have developed a prototype hexagonal light concentrator for the
Large-Sized Telescopes of the Cherenkov Telescope Array. To maximize the
photodetection efficiency of the focal-plane camera pixels for atmospheric
Cherenkov photons and to lower the energy threshold, a specular film with a
very high reflectance of 92-99% has been developed to cover the inner surfaces
of the light concentrators. The prototype has a relative anode sensitivity
(which can be roughly regarded as collection efficiency) of about 95 to 105% at
the most important angles of incidence. The design, simulation, production
procedure, and performance measurements of the light-concentrator prototype are
reported.

22
The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
2
The categories of this paper are: math