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(S3) : 301-306

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

China Institute of Atomic Energy, Beijing, China

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Abstract：
A bunched beam for a free-electron laser (FEL) driven by a linac (i.e., linear accelerator) always encounters some beam-pipe size changes in its transport process. In this paper, the formulas are derived for calculating the equilibrium field energy and the difference of a bunched beam in two pipe sizes by using a space-charge cylinder model. The calculations show that the results of the space-charge cylinder model are significantly different from those of continuous beam model previously used.
- difference field energy ,
- bunched beam ,
- beam-pipe size change

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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(S3): 301-306.

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(S3): 301-306. shu

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Received: 1995-07-10

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Supported by the National Natural Science Foundation of China and the Science Foundation of Chinese Nuclear Industry.

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沈阳化工大学材料科学与工程学院沈阳 110142

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

China Institute of Atomic Energy, Beijing, China

Received Date: 1995-07-10

Fund Project: Supported by the National Natural Science Foundation of China and the Science Foundation of Chinese Nuclear Industry.

Abstract: A bunched beam for a free-electron laser (FEL) driven by a linac (i.e., linear accelerator) always encounters some beam-pipe size changes in its transport process. In this paper, the formulas are derived for calculating the equilibrium field energy and the difference of a bunched beam in two pipe sizes by using a space-charge cylinder model. The calculations show that the results of the space-charge cylinder model are significantly different from those of continuous beam model previously used.

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

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