第九届加速器物理学术交流会于2005年8月20日至28日在云南省丽江市召开,会议由中国物理学会和中国核学会下属粒子加速器分会的加速器物理专业组主办,同步辐射专业委员会光源专业组协办,清华大学和中国科学院高能物理研究所共同承办。来自清华大学、中国科学院高能物理研究所、中国科技大学、北京大学、 The 9th Accelerator Physics Symposium was held in Lijiang City, Yunnan Province from August 20 to 28, 2005. The conference was sponsored by the Accelerator Physics Group of the Particle Accelerator Branch of the Chinese Society of Physics and the Chinese Society of Nuclear Physics. The Synchrotron Radiation Committee Co-organized by professional groups, Tsinghua University and Institute of High Energy Physics, Chinese Academy of Sciences co-host. From Tsinghua University, Institute of High Energy Physics, Chinese Academy of Sciences, University of Science and Technology of China, Peking University,