- 
								[1]
								R. Huang et al, Off-axis Beam Dynamics in RF-Gun-based Electron Photoinjectors, Submitted to Phys. Rev. Accel. and Beams 
- 
								[2]
								B. McNeil and N. Thompson, Nature photonics, 4: 814(2010) 
- 
								[3]
								Q. K. Jia, Chinese physics C, 39(4): 48101(2015) 
- 
								[4]
								Haixiao Deng et al, Physical Review Letters, 113: 254802(2014) 
- 
								[5]
								M. Boscolo et al, Nucl. Instrum. Methods A, 577: 409(2007) 
- 
								[6]
								W. W. Li, Z. G. He, and Q. K. Jia, Chinese Physics C, 38(4): 47003(2014) 
- 
								[7]
								Wen-Xin Liu et al, Chinese physics B, 20(7): 074102(2011) 
- 
								[8]
								P. Musumeci et al, Applied Physics Letters, 97: 063502(2010) 
- 
								[9]
								J. Edgecumbe et al, Proc. SPIE (1992), 1655: 204 
- 
								[10]
								D. Dowell et al, Nucl. Instrum. Methods A, 622: 685(2010) 
- 
								[11]
								B. Dunham et al, Applied Physics Letters, 102: 034105(2013) 
- 
								[12]
								D. Schlierkamp, Proc. of 5th ICGA Conf (1993), p. 648 
- 
								[13]
								K. Deb et al, Evolutionary Computation, 6:182(2002) 
- 
								[14]
								F. Sannibale et al, NAPAC, WEYA1(2013) 
- 
								[15]
								K. Baptiste et al, Nucl. Instrum. Methods A, 599: 1(2009) 
- 
								[16]
								J. Schmerge et al, Proc. 36th FEL Conf, THP042 (2014) 
- 
								[17]
								P. Loschialpo et al, Journal of Applied Physics, 57: 10(1985) 
- 
								[18]
								H. Qian et al, Proc. 5th IPAC Conf, THPRI066 (2014) 
- 
								[19]
								B. Aune et al, Phys. Rev. ST Accel. Beams, 3: 092001(2000) 
- 
								[20]
								C. Papadopoulos, D. Filippetto, R. Huang et al, Proc. 36th FEL Conf, THP057 (2014) 
- 
								[21]
								J. H. Li, J. Y. Tang, H. F. Ouyang, Chinese Physics C, 33(10): 905(2009) 
- 
								[22]
								J. Qiang et al, Phys. Rev. ST Accel. Beams, 9: 044204(2006) 
- 
								[23]
								H. Enge, Review of Scientific Instruments, 35: 278(1964) 
- 
								[24]
								B. Muratori, J. Jones, and A. Wolski, Phys. Rev. ST Accel. Beams, 18: 064001(2015)