TY - RPRT TI - A new active base of photomultiplier R4125 designed for the PbWO4 calorimeter AU - Somov, Alexander [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)] AU - Barbosa, Fernando [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)] AU - Berdnikov, Vladimir [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)] (ORCID:0000000316034320) AU - Popov, Vladimir [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)] PY - 2025 DO - 10.2172/3000424 UR - https://www.osti.gov/biblio/3000424 ID - 3000424 ER -