Design and thermal structure analysis of a dump beam window for high repetition frequency

Zhang Hao; Huang Liming; Zhao Feng; Lin Hanwen; Chang Renchao; Wei Jianping; E Dejun; Wei Wei; Tao Kai; Yang Jiayue; Zhang Weiqing

doi:10.11884/HPLPB202335.220350

Volume 35 Issue 3

Mar. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(3): 034001

Zhang Hao, Huang Liming, Zhao Feng, et al. Design and thermal structure analysis of a dump beam window for high repetition frequency[J]. High Power Laser and Particle Beams, 2023, 35: 034001. doi: 10.11884/HPLPB202335.220350

Citation:

Zhang Hao, Huang Liming, Zhao Feng, et al. Design and thermal structure analysis of a dump beam window for high repetition frequency[J]. High Power Laser and Particle Beams, 2023, 35: 034001. doi: 10.11884/HPLPB202335.220350

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Design and thermal structure analysis of a dump beam window for high repetition frequency

doi: 10.11884/HPLPB202335.220350

1.
Institute of Advanced Science Facilities, Shenzhen 518107, China
2.
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Received Date: 2022-10-20
Rev Recd Date: 2022-11-30

Available Online: 2022-12-03

Publish Date: 2023-03-01

Abstract

Abstract

Shenzhen Superconducting Soft X-ray Free Electron Laser (S³FEL) will be the only high refrequency free electron laser in soft X-ray band in the world. Dump, playing an important role in system beam tuning, is an important equipment of S³FEL device. As an important component of dump, dump beam window is used to isolate and protect the ultra-high vacuum environment of the accelerator. In this paper, several commonly used materials for dump beam window are compared and analyzed, beryllium is finally chosen as the material. A dump beam window with water-cooled structure is designed using to beryllium. The deposition power of beam window with different thickness is calculated by Monte Carlo method. The thermal-mechanical simulations based on the finite element analysis method show that the water-cooled beryllium window with a thickness of 1.6 mm is the best and meet the application requirements. Its maximum temperature is 121.6 ℃. The maximum stress and central deformation at low vacuum of 1 Pa are 198.7 MPa and 0.000 82 mm respectively. The maximum stress and central deformation at low vacuum of 101 325 Pa are 204.2 MPa and 0.097 mm respectively. The present study provides a critical theoretical basis for the design of dump beam window in S³FEL.
- free electron laser,
- high repetition frequency,
- dump,
- beam window,
- finite element analysis

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References(19)

References

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