Results from 1-ton WbLS testbed at BNL

The large-scale Water-based Liquid Scintillator (WbLS) detector is a new opportunity for the neutrino community to accomplish competent long-baseline neutrino oscillation and unprecedented low-energy neutrino measurements.

Several table-top WbLS detection systems have been implemented at BNL and LBNL.

It is critical to advance further with a mid-scale demonstrator to understand and tune the WbLS property and stability.

A 1-ton detector located at BNL instrumentation building, equipped with 58 PMTs (30 on the bottom and 28 on the wall) and muon scopes, was built in 2022.

Various liquid materials were developed and filled sequentially.

The performance and stability of WbLS for cosmic muons and an alpha source were measured.

In this presentation, the latest experiment's status and the physics results will be shown.