An overview of the nEXO experimental design

nEXO is a proposed next-generation neutrinoless double-beta decay experiment using a 5-tonne monolithic liquid xenon (LXe) time projection chamber (TPC) to search for the neutrinoless double-beta decay of 136Xe with an estimated half-life sensitivity of ∼ 1028 years at 90% C.L. The nEXO detector inherits various aspects from its predecessor EXO- 200 experiment with an improved detector design to achieve 1% energy resolution at the Q-value and better background discrimination capabilities. The outer detector is a tank with ultra-pure deionized water in which TPC and cryostat are fully submerged and design to shield external backgrounds and exploits as a muon veto detector. In this talk, I will present the design of the outer detector and TPC, charge collection system, photodetectors, and cryogenic readout electronics that are anticipated to improve the current 0νββ decay half-life measurement by two orders of magnitude.