Ke Wang, Zhiyong Dai, Liansheng Xia, Huang Zhang, Jin Li, Peiliang Fan, Zhiyong Yang. Influence of energy spread on the transverse profile of the focused electron beam[J]. High Power Laser and Particle Beams, 2022, 34(9): 094002
- High Power Laser and Particle Beams
- Vol. 34, Issue 9, 094002 (2022)
Fig. 1. The curvatures of Kapchiskij-Vladimirskij (KV) distribution, Gaussian distribution, Bennett distribution (a), and their spatial Fourier expansion (b)
Fig. 2. The position deviation of electrons induced by focusing length difference
Fig. 3. Current and energy distribution of the electron beam measured in experiment
Fig. 4. Transverse profiles of the center slice and of the whole beam calculated with formula (1)
Fig. 5. MTF size of the electron bunch composed with slice #(46−n ) to #(46+n ) (right), the results are calculated with formula (1)
Fig. 6. Transverse profiles of the center slice and of the whole beam simulated with ASTRA
Fig. 7. MTF size of the electron bunch composed with slice #(46−n ) to #(46+n ) , the results are calculated with the PIC code ASTRA
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Table 1. Relationship between the FWHM beam size and the MTF beam size in various distributions
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