Simulation of charge readout with segmented tiles in nEXO
Abstract
nEXO is a proposed experiment to search for the neutrino-less double beta decay () of Xe in a tonne-scale liquid xenon time projection chamber (TPC). The nEXO TPC will be equipped with charge collection tiles to form the anode. In this work, the charge reconstruction performance of this anode design is studied with a dedicated simulation package. A multi-variate method and a deep neural network are developed to distinguish simulated signals from backgrounds arising from trace levels of natural radioactivity in the detector materials. These simulations indicate that the nEXO TPC with charge-collection tiles shows promising capability to discriminate the signal from backgrounds. The estimated half-life sensitivity for decay is improved by 20 with the multi-variate~(deep neural network) methods considered here, relative to the sensitivity estimated in the nEXO pre-conceptual design report.
Keywords
Cite
@article{arxiv.1907.07512,
title = {Simulation of charge readout with segmented tiles in nEXO},
author = {Z. Li and W. R. Cen and A. Robinson and D. C. Moore and L. J. Wen and A. Odian and S. Al Kharusi and G. Anton and I. J. Arnquist and I. Badhrees and P. S. Barbeau and D. Beck and V. Belov and T. Bhatta and J. P. Brodsky and E. Brown and T. Brunner and E. Caden and G. F. Cao and L. Cao and C. Chambers and B. Chana and S. A. Charlebois and M. Chiu and B. Cleveland and M. Coon and A. Craycraft and J. Dalmasson and T. Daniels and L. Darroch and S. J. Daugherty and A. De St. Croix and A. Der Mesrobian-Kabakian and R. DeVoe and M. L. Di Vacri and J. Dilling and Y. Y. Ding and M. J. Dolinski and A. Dragone and J. Echevers and M. Elbeltagi and L. Fabris and D. Fairbank and W. Fairbank and J. Farine and S. Ferrara and S. Feyzbakhsh and R. Fontaine and A. Fucarino and G. Gallina and P. Gautam and G. Giacomini and D. Goeldi and R. Gornea and G. Gratta and E. V. Hansen and M. Heffner and E. W. Hoppe and J. Hößl and A. House and M. Hughes and A. Iverson and A. Jamil and M. J. Jewell and X. S. Jiang and A. Karelin and L. J. Kaufman and D. Kodroff and T. Koffas and R. Krücken and A. Kuchenkov and K. S. Kumar and Y. Lan and A. Larson and K. G. Leach and B. G. Lenardo and D. S. Leonard and G. Li and S. Li and C. Licciardi and Y. H. Lin and P. Lv and R. MacLellan and T. McElroy and M. Medina-Peregrina and T. Michel and B. Mong and K. Murray and P. Nakarmi and C. R. Natzke and R. J. Newby and Z. Ning and O. Njoya and F. Nolet and O. Nusair and K. Odgers and M. Oriunno and J. L. Orrell and G. S. Ortega and I. Ostrovskiy and C. T. Overman and S. Parent and A. Piepke and A. Pocar and J. -F. Pratte and V. Radeka and E. Raguzin and S. Rescia and F. Retière and M. Richman and T. Rossignol and P. C. Rowson and N. Roy and J. Runge and R. Saldanha and S. Sangiorgio and K. Skarpaas VIII and A. K. Soma and G. St-Hilaire and V. Stekhanov and T. Stiegler and X. L. Sun and M. Tarka and J. Todd and T. Tolba and T. I. Totev and R. Tsang and T. Tsang and F. Vachon and V. Veeraraghavan and S. Viel and G. Visser and C. Vivo-Vilches and J. -L. Vuilleumier and M. Wagenpfeil and M. Walent and Q. Wang and M. Ward and J. Watkins and M. Weber and W. Wei and U. Wichoski and S. X. Wu and W. H. Wu and X. Wu and Q. Xia and H. Yang and L. Yang and Y. -R. Yen and O. Zeldovich and J. Zhao and Y. Zhou and T. Ziegler},
journal= {arXiv preprint arXiv:1907.07512},
year = {2019}
}