Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A scintillator based muon and KLong detector for the Belle II experiment   A new muon and K_Long detector based on scintillators will be used for the
endcap and inner barrel regions in the Belle II experiment, currently under
construction. The increased luminosity of the e+e- SuperKEKB collider entails
challenging detector requirements. We demonstrate that relatively inexpensive
polystyrene scintillator stips with wave length shifting fibers ensure a
sufficient light yield at the Silcon PhotoMultiplier (SiPM) photodetector, are
robust and provide improved physics performance for the Belle II experiment
compared to its predecessor, Belle.

7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom