- 
								[1]
								Z. J. Wang et al, Chinese Physics C, 36(3):256(2012) 
- 
								[2]
								F. Yan, et al, Chinese Physics C, 38(2):027004(2014) 
- 
								[3]
								Y. He et al, Progress of one of 10 MeV superconducting proton linear injectors for C-ADS, in:Proceedings of LINAC2012 
- 
								[4]
								X. Wu et al, End-To-End beam simulations for C-ADS Injector Ⅱ, in:Proceedings of IPAC2013 
- 
								[5]
								Thomas Wangler, Principles of RF Linear Accelerators, A Wiley-Interscience Publication, New York:1998, p. 295 
- 
								[6]
								C. Schmidt et al, Recent Developments of the European XFEL LLRF System, in:Proceedings of IPAC2013 
- 
								[7]
								K. Fong et al, Status of RF Control System for ISAC Ⅱ Superconducting Cavities, in:Proceedings of LINAC 2004 
- 
								[8]
								Y. B. Zhao et al, Chinese Physics C, 32(9):758(2008) 
- 
								[9]
								T. Plawski et al, LLRF system for the CEBAF separator upgrade, in:Proceedings of LINAC2014 
- 
								[10]
								M. Champion et al, The spallation neutron source accelerator low level RF control system, in:Proceedings of PAC2003 
- 
								[11]
								S. Kwon et al, Nuclear Instruments and Methods in Physics Research A, 482:12-31(2002) 
- 
								[12]
								X. Li et al, High Power Laser and Particle Beams, 25(10):2671(2013)(in Chinese) 
- 
								[13]
								M. Liepe et al, Adaptive Feed Forward for Digital RF Control System for the TESLA Test Facility, in:Proceedings of EPAC1998 
- 
								[14]
								L. H. Wen et al, Chinese Physics C, 37(8):087004(2013) 
- 
								[15]
								Merrill Skolnik, Radar Handbook, Third Edition, The McGraw-Hill Companies, 2008, Chapter 25