A Sterile Neutrino Search with the JSNS² Experiment

The $\text{JSNS}^2$ (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment aims to search for $\Delta m^2 \sim 1~\text{eV}^2$ sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). $\text{JSNS}^2$ is searching for the $\bar{\nu}_\mu$ to $\bar{\nu}_e$ oscillation via the inverse beta decay (IBD) reaction $\bar{\nu}_e + p \rightarrow e^+ + n$ followed by gammas from neutron capture on Gd. With a 3 GeV proton beam from the Rapid Cycling Synchrotron (RPS) and spallation neutron target, a neutrino source from muon decay at rest (DAR) is created. The $\text{JSNS}^2$ near detector has a fiducial volume of 17 tonnes and is located 24 meters from the neutrino source, and the $\text{JSNS}^2$-II upgrade will feature a far detector with 32 tonnes of fiducial volume 48 meters from the source. This talk will present the status of $\text{JSNS}^2$, which has already accumulated $1.45\times10^{22}$ Proton-On-Target.