Recent Progress of the Beijing FEL──Realized Saturated Oscillation

Xie Jialin; Zhuang Jiejia; Huang Yongzhang; Zhang Linyi; Lin Shaobo; Zhao Chunnong; Li Lihua; Wu Gang; Wang Gang; Li Chengze; Fu Ensheng; Su Jing; Zhong Yuanyuan; Wang Yanshang; Li Yonggui; Ying Runjie; Yang Xueping; Li Youmeng; Han Bing; Wu Qingwu; Zhang Yuzhen; Pan Weimin; Wang Jianwei; Zhang Liwen; Guo Kangz

Chinese Physics C> 1994, Vol. 18> Issue(8) : 763-768

Recent Progress of the Beijing FEL──Realized Saturated Oscillation

Application Division,Institute of High Energy Physics, Academia Sinica,Beijing 1000802 Institute of Shanghai Optical and mechanical, Academia Sinica, Shonghai 201800

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Abstract：
Beijing FEL facility has been built in IHEP,the saturated oscillation has been obtained at a wavelength of 10.68μm,on Dec.28,1993.The average output energy and the pulse width were measured respectively to be 3mJ,2μs.The corresponding osillation power is greater than 210kW,peak power is about 20MW, which is about 10⁸ times higher than that of spontaneous emission. The FWHM of the FEL spectracal bandwidth is less than 2%.The small signal net gain is 24% per pass.The extraction efficiency is 0.45%.In the present experimental resules,BFEL can be saturated by changing electron energy at the wavelength range from 9-10μm,the maxmium average output energy and extraction efficiency are 10mJ,0.52% respectively,the minimum spectral bandwidth of 0.3% has achieved by shorting cavity length.

References

[1]	J.Xie and J .Zhuang et al,Nucl.Instr.Meth,A272（1988）40;A296（1990）244;A331（1993）204.[2]J.Xie and J.Zhuang et al,Nucl.Instr.Meth,A341（1994）34.

[1] GUO Yun-Jun , HE Kang-Lin . Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C, 2007, 31(11): 1050-1055.
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Xie Jialin, Zhuang Jiejia, Huang Yongzhang, Zhang Linyi, Lin Shaobo, Zhao Chunnong, Li Lihua, Wu Gang, Wang Gang, Li Chengze, Fu Ensheng, Su Jing, Zhong Yuanyuan, Wang Yanshang, Li Yonggui, Ying Runjie, Yang Xueping, Li Youmeng, Han Bing, Wu Qingwu, Zhang Yuzhen, Pan Weimin, Wang Jianwei, Zhang Liwen, Guo Kangz, Recent Progress of the Beijing FEL──Realized Saturated Oscillation[J]. Chinese Physics C, 1994, 18(8): 763-768.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Recent Progress of the Beijing FEL──Realized Saturated Oscillation

Corresponding author: Xie Jialin,

Application Division,Institute of High Energy Physics, Academia Sinica,Beijing 1000802 Institute of Shanghai Optical and mechanical, Academia Sinica, Shonghai 201800

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1994-08-05

Abstract: Beijing FEL facility has been built in IHEP,the saturated oscillation has been obtained at a wavelength of 10.68μm,on Dec.28,1993.The average output energy and the pulse width were measured respectively to be 3mJ,2μs.The corresponding osillation power is greater than 210kW,peak power is about 20MW, which is about 10⁸ times higher than that of spontaneous emission. The FWHM of the FEL spectracal bandwidth is less than 2%.The small signal net gain is 24% per pass.The extraction efficiency is 0.45%.In the present experimental resules,BFEL can be saturated by changing electron energy at the wavelength range from 9-10μm,the maxmium average output energy and extraction efficiency are 10mJ,0.52% respectively,the minimum spectral bandwidth of 0.3% has achieved by shorting cavity length.