[1] Decking W, Abeghyan S, Abramian P, et al. A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator[J]. Nature Photonics, 14, 391-397(2020).

[2] Ishikawa T, Aoyagi H, Asaka T, et al. A compact X-ray free-electron laser emitting in the sub-ångström region[J]. Nature Photonics, 6, 540-544(2012).

[3] Huang Zhirong, Lindau I. SACLA hard-X-ray compact FEL[J]. Nature Photonics, 6, 505-506(2012).

[4] Xu Yuhai, Wang Guanghong, Li Zhefu, . Design of beam dump for the commissioning at SHINE facility[J]. Radiation Protection, 40, 510-515(2020).

[5] Wu Qingbiao, Wang Qingbin. Using FLUKA code to simulate and design the beam dumps' structure of CSNS[J]. Journal of Tsinghua University (Science and Technology), 47, 996-1000(2007).

[6] Jung N S, Lee H S, Oh J H, et al. Radiation shielding design of the PAL-XFEL[J]. Journal of the Korean Physical Society, 66, 425-431(2015).

[7] Jung N S, Kim M H, Bae O, et al. Assessment of the radiation dose level of the PAL-XFEL hard X-ray beamlines under accident conditions[J]. Journal of the Korean Physical Society, 73, 1061-1067(2018).

[8] [8] Liu Xianghong, Bazarov I, Dunham B M, et al. A high average power beam dump f an electron accelerat[J]. Nuclear Instruments Methods in Physics Research Section A: Accelerats, Spectrometers, Detects Associated Equipment, 2013, 709: 3743.

[9] [9] García M, Ogo F, López D, et al. IFMIFEVEDA beam dump shielding: optimized design of the front part[C]Proceedings of the 2nd International Particle Accelerat Conference. 2011.

[10] Shi T, Sun D, Jovanovic I, et al. Optimization of the electron beam dump for a GeV-class laser electron accelerator[J]. Applied Radiation and Isotopes, 176, 109853(2021).

[11] Iglesias D, Arranz F, Arroyo J M, et al. The IFMIF-EVEDA accelerator beam dump design[J]. Journal of Nuclear Materials, 417, 1275-1279(2011).

[12] [12] Kamiya J, Saha P K, Yamamoto K, et al. Thermal analysis of injection beam dump of highintensity rapidcycling synchrotron in JPARC[J]. Nuclear Instruments Methods in Physics Research Section A: Accelerats, Spectrometers, Detects Associated Equipment, 2017, 869: 8494.

[13] [13] Kumar V, Harvey M, Wendel M, et al. Thermal loading analysis of the ring injection dump f the Spallation Neutron Source facility[J]. Nuclear Instruments Methods in Physics Research Section A: Accelerats, Spectrometers, Detects Associated Equipment, 2021, 1006: 165380.

[14] Shi Haoyu, Wang Qingbin, Ma Zhongjian, . Preliminary design of beam dump for CEPC-linac[J]. Nuclear Techniques, 42, 100204(2019).

[15] [15] Maslov M, Schmitz M, Sychev V. Layout considerations on the 25GeV 300kW beam dump of the XFEL project[R]. Germany: DESY, 2006.