Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Particle identification performance of the prototype Aerogel RICH
  counter for the Belle II experiment   We have developed a new type of particle identification device, called an
Aerogel Ring Imaging Cherenkov (ARICH) counter, for the Belle II experiment. It
uses silica aerogel tiles as Cherenkov radiators. For detection of Cherenkov
photons, Hybrid Avalanche Photo-Detectors (HAPDs) are used. The designed HAPD
has a high sensitivity to single photons under a strong magnetic field. We have
confirmed that the HAPD provides high efficiency for single-photon detection
even after exposure to neutron and gamma-ray radiation that exceeds the levels
expected in the 10-year Belle II operation. In order to confirm the basic
performance of the ARICH counter system, we carried out a beam test at the DESY
using a prototype of the ARICH counter with six HAPD modules. The results are
in agreement with our expectations and confirm the suitability of the ARICH
counter for the Belle II experiment. Based on the in-beam performance of the
device, we expect that the identification efficiency at 3.5 GeV/c is 97.4% and
4.9% for pions and kaons, respectively. This paper summarizes the development
of the HAPD for the ARICH and the evaluation of the performance of the
prototype ARICH counter built with the final design components.

1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph