Effects of emittance and space-charge in femtosecond bunch compression

被引：14

作者：

Kan, K. ^{[1
]}

Yang, J. ^{[1
]}

Kondoh, T. ^{[1
]}

Norizawa, K. ^{[1
]}

Yoshida, Y. ^{[1
]}

机构：

[1] Osaka Univ, ISIR, Osaka 5670047, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 597卷 / 2-3期

关键词：

Laser photocathode rf gun; Femtosecond electron bunch generation; Space-charge effect; Emittance; Magnetic bunch compressor;

D O I：

10.1016/j.nima.2008.08.140

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Ultrashort electron bunches of the order of < 100 fs are essential for the study of ultrafast reactions and phenomena by means of time-resolved pump-probe experiments. In order to generate such an electron bunch, the effects of emittance, space-charge (SC) and coherent synchrotron radiation (CSR) on the bunch length in a femtosecond magnetic bunch compressor were studied theoretically. It was observed that the bunch length is dominated by the emittance, SC and CSR effects when the electron bunch is compressed into a femtosecond electron bunch. The increases in bunch length due to the transverse emittance, SC and CSR effects in the bunch compressor were 1.7 fs/mm mrad, 107 fs/nC and 72 fs/nC, respectively. Finally, the simulated bunch length was compared with the experimental results. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：126 / 131

页数：6

共 25 条

[21] Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun [J].