Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Kaon identification system at the NA62 experiment at CERN   The NA62 experiment at CERN SPS aims to measure the branching ratio of the
ultra-rare kaon decay $K^+\to\pi^+\nu\bar{\nu}$ with 10\% precision, collecting
$\sim 100$ events, assuming the Standard Model~(SM) branching ratio of $8.4
\times 10^{-11}$, starting in 2016. The NA62 experiment uses a kaon
decay-in-flight technique and is exposed to a 750~MHz high-energy unseparated
charged hadron beam, in which kaons are a minor component (6\%). Kaon
identification is therefore mandatory to reduce the interference of the
dominant non-kaon component with the experimental measurements. The NA62 kaon
identification system and its performances are presented.

28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph