TY - RPRT TI - Convergence map with action-angle variables based on square matrix for nonlinear lattice optimization AU - Yu, Li Hua (ORCID:0000000240002284) AU - Hidaka, Yoshiteru (ORCID:0000000176991320) AU - Smaluk, Victor (ORCID:0000000279620039) AU - Anderson, Kelly (ORCID:0000000238345712) AU - Hao, Yue (ORCID:0000000181317509) PY - 2023 DO - 10.1103/physrevaccelbeams.26.054002 UR - https://www.osti.gov/biblio/1974821 ID - 1974821 ER -