Electron-Ion Collider (EIC) 2nd Detector Program at BNL
Abstract: The Electron-Ion Collider (EIC) will be an experimental facility to explore the properties of gluons in nucleons and nuclei, shedding light on their structure and dynamics. The EIC community expressed the physics program of the EIC in White Paper more than a decade ago. The demanding detector requirements and potential technologies to deploy at an EIC detector were worked out in a year long effort in 2020 and published in a comprehensive Yellow Report. The detector resulting from this efforts, ePIC, is designed to perform a broad physics program. It is scheduled for start of construction in 2025. At the same time the wider EIC community is strongly in favor of a second detector at the EIC. Having two general-purpose collider detectors to support the EIC science program, allows us to have cross-checks and control of systematic for potential scientific discoveries. The second detector should feature complementary technologies where possible. It can also focus on specific measurements that are less well addressed in ePIC. The second interaction region provides improved forward detector acceptance at low $p_{T}$ and a secondary beam focus that enables to enhance the exclusive and diffractive physics program. In this talk, I will present potential capabilities of the second detector and discuss simulation studies at BNL related to the diffractive physics program.
Host: Isaac Mooney