Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CHIPS Event Reconstruction and Design Optimisation   The CHIPS experiment will comprise a 10 kton water Cherenkov detector in an
open mine pit in northern Minnesota, USA. The detector has been simulated using
a full GEANT4 simulation and a series of event reconstruction algorithms have
been developed to exploit the charge and time information from all of the PMTs.
A comparison of simulated CCQE nu_mu and nu_e interactions using 10 inch and 3
inch PMTs is presented, alongside a comparison of 10% and 6% photocathode
coverage for 3 inch PMTs. The studies demonstrate that the required selection
efficiency and purity of charged-current nu_e interactions can be achieved
using a photocathode coverage of 6% with 3 inch PMTs. Finally, a dedicated
pi-zero fitter is shown to successfully reconstruct a clean sample of pi-zero
mesons despite the low 6% photocathode coverage with 3 inch PMTs.

10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat