研究目的
To introduce the main design and present status of the CAEP THz FEL facility, focusing on achieving wavelength tunable in a wide range and high power operation.
研究成果
The CAEP THz FEL facility has achieved lasing and saturation with radiation frequencies sequentially at 1.99THz, 2.41THz, and 2.92THz, and average output power larger than 10W. Future work will focus on reducing optical loss and increasing output power in the 1THz to 2THz range, along with conducting user experiments.
研究不足
The influence of waveguide misalignment and wall roughness may prevent lasing with a 14mm waveguide, necessitating the use of a 22mm waveguide for successful operation.
1：Experimental Design and Method Selection:
The design includes a GAAS photoemission DC gun, superconducting accelerator, hybrid wiggler, and optical cavity. The optical resonator is optimized for wavelength tunability and high power operation.
2：Sample Selection and Data Sources:
The facility's performance is evaluated based on lasing and saturation operations observed in
3：List of Experimental Equipment and Materials:
20 Includes a NEA GaAS photocathode DC-gun, superconducting accelerator, hybrid wiggler, and optical cavity with metal-coated reflect mirror and waveguide.
4：Experimental Procedures and Operational Workflow:
The process involves achieving lasing and saturation, with adjustments to waveguide size and detuning length for optimal performance.
5：Data Analysis Methods:
Simulations using 3D-OSIFEL code to evaluate the influence of waveguide and Rayleigh length on the quality of the optical cavity.
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