1. It’s an emergency situation about to investigate the Herschel detector. We plan to get the preliminary results in a week.
2. The item includes the geometry of the physical volume, optical material parameters (including logical volume parameters, the surface parameters), sub-detector (including photon detector, light-guide, wavelength-shifting bar, and PMT), and their alignment.
3. We aim to read out the scintillation yields in the full crystal and the yields only from PMT.
4. Participants: Hengne Li, Guoming Liu, Weisong Duan
5. The indico link: https://indico.cern.ch/event/1342084/

Anyway, we need to get our preliminary results in a week, whether the results are right or not.