Generation of quasiequally spaced ultrashort microbunches in a photocathode rf gun
Generation of quasiequally spaced ultrashort microbunches in a photocathode rf gun
复制标题
在光电阴极射频枪中生成准等距超短微束
DOI:
10.1016/j.nima.2014.12.019
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发表时间:
2015-03
期刊:
影响因子:
--
通讯作者:
Qika Jia
中科院分区:
文献类型:
--
作者:
Zhigang He;Yuanfang Xu;Weiwei Li;Qika Jia
A photocathode rf gun can generate trains of THz subpicosecond electron bunches by illuminating the cathode with trains of laser pulses, but it suffers from the increasing charge in the beam. The THz structure blurs and tends to disappear when the longitudinal space charge forces begin to play a significant role in the beam evolution. In this paper, we propose a scheme to restrain the space charge forces by expanding the transverse size of the laser pulses to reduce the charge density and adopting a multicell gun to increase the beam energy. Thus, quasiequally spaced ultrashort microbunches with relatively high charges can be generated according to our studies. Postacceleration can be used to freeze the longitudinal phase space dynamics. The proposed scheme is in principle able to generate intense multi-color narrow-band THz radiation and offers a promising way towards the tunable intense narrow-band THz sources.
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DOI:
10.1016/j.nima.2007.04.129
发表时间:
2007-07
影响因子:
1.4
作者:
M. Boscolo;M. Ferrario;I. Boscolo;F. Castelli;S. Cialdi
通讯作者:
M. Boscolo;M. Ferrario;I. Boscolo;F. Castelli;S. Cialdi
DOI:
10.1103/physrevstab.12.080701
发表时间:
2009-06
影响因子:
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作者:
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通讯作者:
D. Xiang;G. Stupakov
DOI:
10.1103/physrevstab.11.040702
发表时间:
2008-04-01
影响因子:
--
作者:
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通讯作者:
Sinclair, Charles K.
影响因子:
8.6
作者:
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通讯作者:
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影响因子:
3.2
作者:
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通讯作者:
Wu, Z.