Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scintillation proportional Xe counter with WLS fiber readout for
  low-energy X-rays   A gas Xe based scintillation proportional counter with cylindrical geometry
and wavelength shifting (WLS) fiber readout for X-rays of energy 0.5 - 100 keV
is proposed. With such a design large sizes and sensitive area of the counter
with a fairly well uniformity is possible. The counter could be used for "dark
matter" search and neutrino magnetic moment measurement and for detection of
small amounts or traces of radioactive elements in substances or environment.

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
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics