Waveguide optical resonator optimization of CAEP THz-FEL in 1−4.2 THz

Yuhuan Dou; Xiaojian Shu; Dai Wu; Yong Xu; Xingfan Yang; Ming Li

doi:10.11884/HPLPB202234.210270

Journals >High Power Laser and Particle Beams >Volume 34 >Issue 3 >Page 031013 > Article

High Power Laser and Particle Beams
Vol. 34, Issue 3, 031013 (2022)

Waveguide optical resonator optimization of CAEP THz-FEL in 1−4.2 THz

Yuhuan Dou¹, Xiaojian Shu¹, Dai Wu^2、*, Yong Xu², Xingfan Yang², and Ming Li²

Author Affiliations

¹Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100094, China

²Institute of Applied Electronics, CAEP, Mianyang 621900, China

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DOI: 10.11884/HPLPB202234.210270 Cite this Article

Yuhuan Dou, Xiaojian Shu, Dai Wu, Yong Xu, Xingfan Yang, Ming Li. Waveguide optical resonator optimization of CAEP THz-FEL in 1−4.2 THz[J]. High Power Laser and Particle Beams, 2022, 34(3): 031013 Copy Citation Text

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Fig. 1. Curve of power in the optical cavities (P_in) to the waveguide gap 22 mm and 14 mm in 1 THz vs pass

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Fig. 2. (a) skin depth changes with frequency and conductivity and (b) corrected conductivity vs roughness of copper surface

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electron beam		wiggler
energy /MeV	7	period /cm	3.8
peak current /A	12.5	peak field strength /kG	3.3
micro bunch/ps	8	number of periods	42
emittance/(πmm·mrad)	10	optical cavity
energy spread /%	0.75(FWHM)	cavity length /m	2.769
repetition rate/MHz	54.17	curvature radius/cm	221

Table 1. Parameters of CAEP’s THz free-electron laser(FEL)

Yuhuan Dou, Xiaojian Shu, Dai Wu, Yong Xu, Xingfan Yang, Ming Li. Waveguide optical resonator optimization of CAEP THz-FEL in 1−4.2 THz[J]. High Power Laser and Particle Beams, 2022, 34(3): 031013

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