English Summary

The Hypernuclear Experimental Readiness Review (ERR) was held at Jefferson Lab on June 4–5, 2026. The review focused on the technical and safety readiness of the Hall C hypernuclear experiments, including the experimental apparatus, beamline, detector systems, analysis and simulation framework, safety documentation, manpower, and plans toward experiment execution.

The review committee provided comments and recommendations that will be incorporated into the final preparation phase. While formal follow-up procedures and documentation will continue, the review marked an important milestone for the collaboration: the preparation of the experiment has advanced to the next stage toward execution.

In parallel with the ERR, detector preparation work was carried out on site. The photo shows Ishido, an M2 graduate student at Kyoto University, together with Nishi, a D2 graduate student at the University of Tokyo, and Takahashi, an M2 graduate student at the University of Tokyo, checking the light tightness of plastic scintillation detectors for time-of-flight measurements in the High-Resolution Electron Spectrometer (HES). They also tested signals from photomultiplier tubes (PMTs) attached to the detectors using a beta source.

The JLab hypernuclear experiments aim to perform high-resolution spectroscopy of hypernuclei and to provide experimental information on hyperon–nucleon interactions. These studies are important not only for nuclear and hadron physics, but also for understanding dense matter in neutron stars.

We welcome participation from graduate students in Japan and abroad. The project offers a wide range of possible master’s and doctoral research topics, including detector hardware, readout electronics, data acquisition, analysis software, simulations, spectrometer optics, and physics analysis. We also welcome collaborations with researchers and staff members in various forms. Please feel free to contact Toshiyuki Gogami if you are interested.