Paper | Title | Page |
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TUP070 | Numerical Calculation of Diffraction Loss for Characterisation of a Partial Waveguide FEL Resonator | 521 |
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Waveguide is widely used in long wavelength Free-Electron Lasers to reduce diffraction losses. In this paper the amplitude and phase transverse distribution of light emission produced in a partial-waveguide FEL resonator is calculated by Fresnel principle. To acquire high power out-coupled and optimize resonator structure of HUST THz-FEL, the characterisation of reflecting mirror is discussed to reduce diffraction loss. | ||