Dynamic Desynchronization of BFEL Optical Resonator

WANG YanShan; XIE JiaLin; CHANG XiangYun; WANG MingKai; WU Gang; YANG XuePing; LI YongGui

Chinese Physics C> 2000, Vol. 24> Issue(7) : 681-684

Dynamic Desynchronization of BFEL Optical Resonator

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100080, China

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Abstract：
A new method of arbitrary variation of the phase of RF system during the macropulse to optimize the FEL output is proposed. In this method, the FEL output is used as a tuning indicator to adjust the RF phase in different time intervals of the macro pulse with computer controlled arbitrary function generator. In this case, shortest build up time and largest saturated power in a macro pulse can be simultaneously achieved. Experimental testing of this method has been carried out in Beijing IR FEL oscillator and proves to be effective in increasing the power output of BFEL facility.

References

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. Dattoli G ,Cabrini S ,Giannessi L et al.Nucl.Instr.And Meth .in Phys.Res.,1992 ,A318:4 95— 4 99 2. XIE JiaLin,ZHUAN GJieJia,HUAN GYongZhang et al.Nucl.Instr.and Meth.in Phys.Res.,1995,A358:2 56— 2 593. Bakker R J,Knippels G M H ,vander Meer A F G et al.Phys.Rev.,1993,E4 8( 5) :R32 56—R32 584. Knippels G M H ,Lin L ,vander Meer A F Getal.Dynamic desynchronization of the FELIX resonator.In :Dattoli G ,Renieri Aeds.Free Electron Laser 1996 .The Netherland :Elsevier Science B .V .,1997.Ⅱ – 39—Ⅱ – 405. LI FengTian,XIE JiaLin ,WANG YanShan et al.High Energy Physics and Nuclear Physics(in Chinese),1998,22(10):932— 936(李逢天 ,谢家麟 ,王言山等 .高能物理与核物理 ,1998,22(10):932— 936 )6. XIE J ,ZHUANG J,LIY et al.Nucl.Instr .And Meth .in Phys.Res.,1998,A4 0 7:14 6— 150

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WANG YanShan, XIE JiaLin, CHANG XiangYun, WANG MingKai, WU Gang, YANG XuePing and LI YongGui. Dynamic Desynchronization of BFEL Optical Resonator[J]. Chinese Physics C, 2000, 24(7): 681-684.

WANG YanShan, XIE JiaLin, CHANG XiangYun, WANG MingKai, WU Gang, YANG XuePing and LI YongGui. Dynamic Desynchronization of BFEL Optical Resonator[J]. Chinese Physics C, 2000, 24(7): 681-684. shu

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Received: 1999-05-26
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

Dynamic Desynchronization of BFEL Optical Resonator

Corresponding author: WANG YanShan,

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100080, China

Received Date: 1999-05-26
Accepted Date: 1900-01-01
Available Online: 2000-07-05

Abstract: A new method of arbitrary variation of the phase of RF system during the macropulse to optimize the FEL output is proposed. In this method, the FEL output is used as a tuning indicator to adjust the RF phase in different time intervals of the macro pulse with computer controlled arbitrary function generator. In this case, shortest build up time and largest saturated power in a macro pulse can be simultaneously achieved. Experimental testing of this method has been carried out in Beijing IR FEL oscillator and proves to be effective in increasing the power output of BFEL facility.