TY - RPRT TI - Multi-Region Solver and Algebraically-Transformed Block-Diagonal Preconditioner for High-Q Cavity Problems AU - Kotulski, Joseph D. AU - Pfeiffer, Robert Anthony AU - Dang, Vinh Quang PY - 2024 DO - 10.2172/2999217 UR - https://www.osti.gov/biblio/2999217 ID - 2999217 ER -