Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Particle Identification with DIRCs at PANDA   The DIRC technology (Detection of Internally Reflected Cherenkov light)
offers an excellent possibility to minimize the form factor of Cherenkov
detectors in hermetic high energy detectors. The PANDA experiment at FAIR in
Germany will combine a barrel-shaped DIRC with a disc-shaped DIRC to cover an
angular range of 5 to 140 degrees. Particle identification for pions and kaons
with a separation power of 3 standard deviations or more will be provided for
momenta between 0.5 GeV/c and 3.5 GeV/c in the barrel region and up to 4 GeV/c
in the forward region. Even though the concept is simple, the design and
construction of a DIRC is challenging. High precision optics and mechanics are
required to maintain the angular information of the Cherenkov photons during
multiple internal reflections and to focus the individual photons onto position
sensitive photon detectors. These sensors must combine high efficiencies for
single photons with low dark count rates and good timing resolution at high
rates. The choice of radiation hard fused silica for the optical material and
of MCP-PMT photon sensors is essential for DIRC detectors to survive in an
environment of radiation and strong magnetic field. The two DIRC detectors
differ in the focusing optics, in the treatment of chromatic dispersion and in
the electronic readout systems. The technical design of the two DIRC detectors
and their validation by testing prototypes in a mixed particle beam at CERN are
presented.

35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin