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.
@article{arxiv.1612.04604,
title = {CHIPS Event Reconstruction and Design Optimisation},
author = {A. Blake and S. Germani and Y. B. Pan and A. J. Perch and M. M. Pfützner and J. Thomas and L. H. Whitehead},
journal= {arXiv preprint arXiv:1612.04604},
year = {2016}
}