Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using 220Rn to calibrate liquid noble gas detectors   In this paper, we describe 220Rn calibration source that was developed for
liquid noble gas detectors. The key advantage of this source is that it can
provide 212Bi-212Po consecutive events, which enables us to evaluate the vertex
resolution of a detector at low energy by comparing low-energy events of 212Bi
and corresponding higher-energy alpha-rays from 212Po. Since 220Rn is a noble
gas, a hot metal getter can be used when introduced using xenon as the carrier
gas. In addition, no long-life radioactive isotopes are left behind in the
detector after the calibration is complete; this has clear advantage over the
use of 222Rn which leaves long- life radioactivity, i.e., 210Pb. Using a small
liquid xenon test chamber, we developed a system to introduce 220Rn via the
xenon carrier gas; we demonstrated the successful introduction of 6 times 10^2
220Rn atoms in our test environment.

18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
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The categories of this paper are: stat
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc