Difference of Field Energy of a Bunched Beam Induced by Beam-Pipe Size Changes

Chen Yinbao; Huang Zhibin; Fu Shinian

Chinese Physics C> 1996, Vol. 20> Issue(6) : 571-576

Difference of Field Energy of a Bunched Beam Induced by Beam-Pipe Size Changes

China Institute of Atomic Energy,Beijing 102413

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Abstract：
A bunched beam for Free Electron Laser(FEL)driven by a linac always encounters some beam-pipe size changes in its transport process.In this paper,the formulae are derived for calculating the equilibrium field energy of a bunched beam and its difference in two pipe sizes by using a space charge cylinder model.The calculations show that a great difference between the results of space charge cylinder model and continuous beam model used before.

References

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谢家麟、庄杰佳、钟世材等，强激光与粒子束。1（1989）289.[2]DattoliG et al.,IEEE.J.Quan.Elect.,QE-20（1984）637.[3]Lawson J D,The Physics of Charged Particle Beams,Second Edition,Clarendon Press,Oxford,1988,p.395.[4]Chan K C D,Proceedings of the Beijing FEL Seminar,Beijing University,11-23 August,1988,p.97.[5]Chen Yinbao,Zhang Zhenhai,Chin.J.Nucl.Phys.,16（1994）71.[6]陈银宝、傅世年、黄志斌等，原子能科学技术，28（1994）481.[7]Zhibin Huang,Yinbao Chen,Shinian Fu,Emittance Growth Caused by Bunched Beam with Nonuniform Distribution in Both Longitudinal and Transverse Directions in Linac,Proc.1995 Particle Accel.Conf.,May1-5,1995,USA.

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Chen Yinbao, Huang Zhibin and Fu Shinian. Difference of Field Energy of a Bunched Beam Induced by Beam-Pipe Size Changes[J]. Chinese Physics C, 1996, 20(6): 571-576.

Chen Yinbao, Huang Zhibin and Fu Shinian. Difference of Field Energy of a Bunched Beam Induced by Beam-Pipe Size Changes[J]. Chinese Physics C, 1996, 20(6): 571-576. shu

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

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