[1] Tigner M. A possible apparatus for electron clashing-beam experiments[J]. Il Nuovo Cimento (1955-1965), 37, 1228-1231(1965).
[2] Schriber S O, Funk L W, Hodge S B, et al. Experimental measurements on a 25 meV reflexotron[J]. IEEE Transactions on Nuclear Science, 24, 1061-1063(1977).
[3] Flanz J B, Sargent C P. Operation of an isochronous beam recirculation system[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 241, 325-333(1985).
[4] Benson S, Biallas G, Bohn C, et al. First lasing of the Jefferson Lab IR Demo FEL[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 429, 27-32(1999).
[5] Neil G R, Bohn C L, Benson S V, et al. Sustained kilowatt lasing in a free-electron laser with same-cell energy recovery[J]. Physical Review Letters, 84, 662-665(2000).
[6] Behre C, Benson S, Biallas G, et al. First lasing of the IR upgrade FEL at Jefferson lab[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 528, 19-22(2004).
[7] Bilderback D H, Elleaume P, Weckert E. Review of third and next generation synchrotron light sources[J]. Journal of Physics B: Atomic, Molecular and Optical Physics, 38, S773-S797(2005).
[8] Douglas D, Technical Note 96050, Jefferson Labaty (1996).
[9] Shizuma T, Hajima R, Minehara E J, et al. Inject design f the JAERIFEL energyrecovery transpt[C]Proceedings of the 7th European Particle Accelerat Conference. 2000: 10741076.
[10] Liu Kexin, Hao Jiankui, Quan Shengwen, . Superconducting radio-frequency technology[J]. High Power Laser and Particle Beams, 34, 104014(2022).
[11] Merminga L, Douglas D R, Krafft G A. High-current energy-recovering electron linacs[J]. Annual Review of Nuclear and Particle Science, 53, 387-429(2003).
[12] Hajima R. Emittance compensation in a return arc of an energy-recovery linac[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 528, 335-339(2004).
[13] Sereno N S R. Experimental studies of multipass beam breakup energy recovery using the CEBAF inject LINAC[D]. Urbana: University of Illinois, 1994.
[14] Pozdeyev E. Regenerative multipass beam breakup in two dimensions[J]. Physical Review Accelerators and Beams, 8, 054401(2005).
[15] Padamsee H, Knobloch J, Hays T. RF Superconductivity f accelerats[M]. New Yk: John Wiley & Sons, 1998.
[16] Yunn B C. Expressions for the threshold current of multipass beam breakup in recirculating linacs from single cavity models[J]. Physical Review Accelerators and Beams, 8, 104401(2005).
[17] Bazarov I V, Hoffstaetter G H. Multipass beambreakup: they calculation[C]Proceedings of EPAC 2004. 2004: 21972199.
[18] Tennant C D. Studies of energy recovery linacs at Jefferson labaty: 1 GeV demonstration of energy recovery at CEBAF studies of the multibunch, multipass beam breakup instability in the 10 kW FEL upgrade driver[D]. College of William & Mary Arts & Sciences, 2006.
[19] Adderley P A, Clark J, Grames J, et al. Load-locked dc high voltage GaAs photogun with an inverted-geometry ceramic insulator[J]. Physical Review Accelerators and Beams, 13, 010101(2010).
[20] Dunham B, Barley J, Bartnik A, et al. Record high-average current from a high-brightness photoinjector[J]. Applied Physics Letters, 102, 034105(2013).
[21] Gulliford C, Bartnik A, Bazarov I, et al. Demonstration of cathode emittance dominated high bunch charge beams in a DC gun-based photoinjector[J]. Applied Physics Letters, 106, 094101(2015).
[22] Zheng Lianmin, Li Zizheng, Du Yingchao, et al. Design of a 217 MHz VHF gun at Tsinghua University[C]Proceedings of the 10th International Particle Accelerat Conference. 2019: 20502053.
[23] Sannibale F, Filippetto D, Qian H, et al. High-brightness beam tests of the very high frequency gun at the Advanced Photo-injector EXperiment test facility at the Lawrence Berkeley National Laboratory[J]. Review of Scientific Instruments, 90, 033304(2019).
[24] Petrushina I, Litvinenko V N, Jing Y, et al. High-brightness continuous-wave electron beams from superconducting radio-frequency photoemission gun[J]. Physical Review Letters, 124, 244801(2020).
[25] Quan Shengwen, Hao Jiankui, Lin Lin, et al. Stable operation of the DC-SRF photoinjector[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 798, 117-120(2015).
[26] Zhao Sheng, Huang Senlin, Lin Lin, et al. Longitudinal phase space improvement of a continuous-wave photoinjector toward X-ray free-electron laser application[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1018, 165796(2021).
[27] Liepe M. Conceptual layout of the cavity string of the Cnell ERL main linac cryomodule[C]Proceedings of the 11th Wkshop on RF Superconductivity. 2003: 115119.
[28] Li Yongming, Zhu Feng, Quan Shengwen, et al. The design of a five-cell high-current superconducting cavity[J]. Chinese Physics C, 36, 74-79(2012).
[29] Douglas D, Benson S V, Krafft G A, et al. Driver accelerat design f the 10kW upgrade f the JLAB IR FEL[C]Proc of LINAC. 2001: 867870.
[30] Merminga L, Labaty J. Energy recovery linacs[C]Proceedings of 2007 IEEE Particle Accelerat Conference. 2007: 2226.
[31] Tennant C, Benson S, Boyce J, et al. LERF – New life f the Jefferson labaty FEL[C]Proceedings of the 59th ICFA Advanced Beam Dynamics Wkshop on Energy Recovery Linacs. 2017: 4548.
[32] Merminga L, Beard K, Cardman L, et al. ELIC: an electronlight ion collider based at CEBAF[C]Proceedings of EPAC 2002. 2002: 203205.
[33] Nishimi N, Hajima R, Iijima H, et al. FEL oscillation with a high extraction efficiency at JAEA ERL FEL[C]Proceedings of the 28th International Free Electron Laser Conference. 2006: 265272.
[34] Sakanaka S, Adachi M, Adachi S, et al. Recent progress operational status of the compact ERL at KEK[C]Proceedings of the 6th International Particle Accelerat Conference. 2015: 13591362.
[35] Mikawa Y, Haga K, Hagiwara M, et al. New industrial application beamline f the cERL in KEK[C]Proceedings of the 10th International Particle Accelerat Conference. 2019: 34753477.
[36] Gullifd C, Banerjee N, Bartnik A, et al. CBETA beam commissioning results[C]Proceedings of the 10th International Particle Accelerat Conference. 2019: 748750.
[37] Arnold M, Birkhan J, Pforr J, et al. First operation of the superconducting Darmstadt linear electron accelerator as an energy recovery linac[J]. Physical Review Accelerators and Beams, 23, 020101(2020).
[38] Vinokurov N A. Status of Novosibirsk ERL[C]Proceedings of the 63th ICFA Advanced Beam Dynamics Wkshop on Energy Recovery Linacs. 2019: 57.
[39] Kaabi W, Chaikovska I, Stocchi A, et al. PERLE: a high power energy recovery facility[C]Proceedings of the 10th International Particle Accelerat Conference. 2019: 13961399.
[40] Wang Guimei, Chao Y C, Liu Chuyu, et al. Energy recovery transpt design f PKU FEL[C]Proceedings of 2007 IEEE Particle Accelerat Conference. 2007: 11911193.
[41] Huang S L, Liu K X, Quan S W, et al. Optics layout f the ERL test facility at Peking University[C]Proceedings of ERL 2011. 2011: 4951.
[42] Chen Si, Huang Senlin, Li Yongming, et al. Multi-pass, multi-bunch beam breakup for 9-cell Tesla cavities in the ERL[J]. Chinese Physics C, 37, 087001(2013).
[43] Cui Xiaohao, Wang Jiuqing, Wang Shuhong, et al. Lattice design beam dynamics of ERLTF in IHEP, Beijing[C]Proceedings of ERL 2011. 2011: 127129.
[44] Dai Jinhua, Deng Haixiao, Dai Zhimin. Design of Shanghai high power THzFEL source[C]Proceedings of FEL 2011. 2011: 271273.
[45] Li P, Wu D, Li M, et al. First lasing at the CAEP THz FEL facility[C]Proceedings of 39th Free Electron Laser Conference. 2019: 1114.
[46] Gruner S M, Bilderback D, Bazarov I, et al. Energy recovery linacs as synchrotron radiation sources (invited)[J]. Review of Scientific Instruments, 73, 1402-1406(2002).
[47] Bilderback D H, Brock J D, Dale D S, et al. Energy recovery linac (ERL) coherent hard X-ray sources[J]. New Journal of Physics, 12, 035011(2010).
[48] Flavell W R, Quinn F M, Clarke J A, et al. 4GLS – the UK’s fourth generation light source[C]Proceedings of SPIE 5917, Fourth Generation XRay Sources Optics III. 2005: 59170C.
[49] Kim K J, Huang Zhirong, Lindberg R. Synchrotron radiation freeelectron lasers: principles of coherent Xray generation[M]. Huang Senlin, Liu Kexin, trans. Beijing: Peking University Press, 2018
[50] Kim K J, Shvyd’ko Y, Reiche S. A proposal for an X-ray free-electron laser oscillator with an energy-recovery linac[J]. Physical Review Letters, 100, 244802(2008).
[51] Zhao Z T, Wang Z, Feng C, et al. Energy recovery linac based fully coherent light source[J]. Scientific Reports, 11, 23875(2021).
