The light-only liquid xenon (LoLX) experiment is an R&D detector designed to perform studies of light emission, transport and detection in liquid xenon (LXe) detectors using silicon photomulitpliers (SiPMs) . LoLX aims to study the properties of xenon scintillation light and Cherenkov radiation, which will be used to refine existing simulation models, and provide input to the planned neutrinoless double beta decay (0𝛎𝝱𝝱) experiment nEXO . nEXO will employ 5 tonnes of enriched Xe-136, and is expected to reach a 0𝛎𝝱𝝱 half-life sensitivity of >1028 years in the planned configuration, covering the parameter space associated with the inverted neutrino mass ordering . The nEXO experiment will use SiPMs to detect LXe scintillation light, and segmented anode tiles for charge readout in a single-phase TPC configuration. LoLX employs 96 Hamamatsu VUV4 SiPMs for xenon scintillation light detection, which peaks at ~175 nm, and uses wavelength filters to isolate scintillation light from broad-band Cherenkov radiation. In this presentation, we will give an overview of the LoLX experiment, discuss the status of the program and outline current and future upgrades to the detector. These upgrades include improvements to the data acquisition system, now capable of reading 3 GSPS, which will enable detailed timing studies of LXe scintillation.
- nEXO Collaboration, nEXO: neutrinoless double beta decay search beyond 1028 year half-life sensitivity, Journal of Physics G: Nuclear and Particle Physics, 2021,DOI: 10.1088/1361-6471/ac3631