Development of a Barrel Electromagnetic Calorimeter for the Electron Ion Collider

Since the publication of the DPAP final report in 2021 there has been considerable development and time invested into the EIC Project Detector. Inside the detector, one of the largest sub-systems is the Barrel EMCal. The reference technology of the Barrel EMCal consists of approximately 8000 blocks of homogenous scintillating material instrumented with Silicon Photo Multiplier readouts. It is planned to have a coverage of - η between -1.7 and 1.3 and is located between the DIRC and outer MPGD at its inner radius and the Barrel HCAL at its outer radius. Barrel EMCal is envisioned to consist of Sci-Glass; this scintillating material is a novel, cost-effective alternative to PbWO4 crystals, which have very good energy resolution to provide the desired electron detection and the separation for e/ π. In the refrence design the Sci-Glass is cut and polished into truncated rectangular pyramid in order to allow the detector to be constructed with a projective geometry. At CUA mechanical model for the Barrel EMCal is being created and testing of the Sci-Glass is ongoing as part of ERD105 in collaboration with the Thomas Jefferson National Accelerator Facility. In this talk I will give an overview of the Barrel EMCal and its ongoing design development as relates to EIC Detector-1 as a whole along with a discussion of the new Sci-Glass material