TY - RPRT TI - Spallation Neutron Source Proton Power Upgrade (PPU) Project: Lessons Learned for CD-4 AU - Champion, Mark [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000257422568) AU - Cain, Wendy [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] PY - 2025 DO - 10.2172/2573159 UR - https://www.osti.gov/biblio/2573159 ID - 2573159 ER -