[1] NEWHAUSER W D, ZHANG R. Physics in Medicine & Biology, 2015, 60: R155. doi:  10.1088/0031-9155/60/8/R155
[2] HAMSTRA D A. Cancer J, 2014, 20 (6): 369. doi:  10.1097/PPO.0000000000000086
[3] BEECKMAN W, JONGEN Y, LAISNE A, et al. Nucl Instr and Meth B, 1991, 56(2): 1201.
[4] JONGEN Y, LAISNE A, BEECKMAN W, et al. Nucl Instr and Meth B, 1993, 79 (1–4): 885.
[5] ZHANG T, WANG C, LI M, et al. Nucl Instr and Meth B, 2017, 406: 244. doi:  10.1016/j.nimb.2016.11.010
[6] KLEIN H U, BAUMGARTEN C, GEISLER A, et al. Nucl Instr and Meth B, 2005, 241: 721. doi:  10.1016/j.nimb.2005.07.123
[7] PEDRONI E, BACHER R, BLATTMANN H, et al. Med Phys, 1995, 22 (1): 37. doi:  10.1118/1.597522
[8] TAN S W, LI R, GUO C L, et al. Nucl Instr and Meth A, 2018, 911: 25. doi:  10.1016/j.nima.2018.09.091
[9] SUNIL C. Applied Radiation and Isotopes, 2016, 110: 205. doi:  10.1016/j.apradiso.2016.01.023
[10] YUN C, KIM J. Nucl Instr and Meth B, 2007, 263: 513. doi:  10.1016/j.nimb.2007.07.007
[11] 高大庆, 武荣, 周忠祖, 等. 电力电子技术, 2003, 37(2): 15. doi:  10.3969/j.issn.1000-100X.2003.02.006

GAO Daqing, WU Rong, ZHOU Zhongzu, et al. Power Electronics, 2003, 37(2): 15. (in Chinese) doi:  10.3969/j.issn.1000-100X.2003.02.006
[12] 黄玉珍. 基于FPGA的数字电源调节器研究与设计[D]. 北京: 中国科学院研究生院, 2010: 32.

HUANG Yuzhen. Research and Design of Digital Power Supply Regulator Based on FPGA[D]. Beijing: University of Chinese Academy of Sciences, 2010: 32 (in Chinese).
[13] 肖筱南. 现代数值计算方法[M]. 北京: 北京大学出版社, 2003: 153.

XIAO Xiaonan. Modern Numerical Method[M]. Beijing: Peking University Press, 2003: 153 (in Chinese).