Influence of space charge effect in femtosecond electron bunch on coherent transition radiation spectrum

Abstract

This paper numerically and experimentally demonstrates the influence of the space charge forces in short electron bunches on the spectrum of coherent transition radiation. To estimate and optimize dimensions of a short electron bunches produced by the KEK LUCX RF gun, ASTRA software was employed. Obtained results indicate that the modification of the femtosecond UV laser pulse transverse profile allows to decrease the space charge forces. The simulation results were confirmed experimentally with the good agreement.

Original language	English
Pages (from-to)	134-138
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	402
DOIs	https://doi.org/10.1016/j.nimb.2017.02.074
Publication status	Published - 1 Jul 2017
Externally published	Yes

Keywords

Coherent transition radiation
RF gun
Space charge effect
THz radiation

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2017.02.074

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Influence of space charge effect in femtosecond electron bunch on coherent transition radiation spectrum. / Shevelev, M.; Aryshev, A.; Honda, Y.; Terunuma, N.; Urakawa, J.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 402, 01.07.2017, p. 134-138.

Research output: Contribution to journal › Article › peer-review

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AB - This paper numerically and experimentally demonstrates the influence of the space charge forces in short electron bunches on the spectrum of coherent transition radiation. To estimate and optimize dimensions of a short electron bunches produced by the KEK LUCX RF gun, ASTRA software was employed. Obtained results indicate that the modification of the femtosecond UV laser pulse transverse profile allows to decrease the space charge forces. The simulation results were confirmed experimentally with the good agreement.

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