Design of a super-radiation terahertz source at CTFEL

L. G. Yan; P. Li; K. Zhou; D. Wu; X. F. Yang; M. Li

doi:10.1117/12.2605319

9 September 2021 Design of a super-radiation terahertz source at CTFEL

L. G. Yan, P. Li, K. Zhou, D. Wu, X. F. Yang, M. Li

Proceedings Volume 11909, Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021); 119090K (2021) https://doi.org/10.1117/12.2605319
Event: Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021), 2021, Chengdu, China

Abstract

China Academy of Engineering Physics Terahertz Free Electron Laser (CTFEL) has been commissioned in 2017 and provides 0.7~4.2 THz wave for users. In order to cover the frequency range of 0.1~0.7 THz, a super-radiation terahertz source is designed behind CTFEL. In this paper, design of the super-radiation source is reported. The super-radiation source works with MeVs and sub-picosecond electron bunch. The technical route to generate MeVs and sub-picosecond is as follows: the superconducting accelerator of CTFEL has two independent 4-cell cavities, the electron beam is accelerated in the first 4-cell cavity, and compressed in the second 4-cell cavity. The sub-picosecond electron beam travels through a undulator with a period of 58 mm to generate terahertz wave, and the gap of the undulator is adjusted to cover the frequency range of 0.1~0.7 THz. The theoretical calculation shows that average power of the super-radiation source can reach tens of Walt.

Citation Download Citation

L. G. Yan, P. Li, K. Zhou, D. Wu, X. F. Yang, and M. Li "Design of a super-radiation terahertz source at CTFEL", Proc. SPIE 11909, Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021), 119090K (9 September 2021); https://doi.org/10.1117/12.2605319

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