Performance of the FOREST/BLC Spectrometer for Study of the $$\eta $$-nucleon Interaction via the $$\gamma d \rightarrow p\eta n$$ Reaction

The current experimental information about interactions between the \(\eta \) meson and nucleon (N) is not enough to understand the nature of the \(\eta \) meson in a nucleus. We installed a new spectrometer and started an experiment to determine the \(\eta N\) scattering parameters at the Research Center for Electron Photon Science, Tohoku University. We present the current status of the experiment.