Generation of pre-bunched electron beams in photocathode RF gun for THz-FEL superradiation

被引：12

作者：

Liu, Shengguang ^{[1
]}

Huang, Yen-Chieh ^{[2
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Natl Tsinghua Univ, Dept Elect Engn, Hsinch 30013, Taiwan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 637卷

关键词：

THz-FEL; Photocathode RF gun; Pre-bunched electron beam; Superradiation;

D O I：

10.1016/j.nima.2010.02.050

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A simple laser technology is proposed to generate a laser pulse sequence with a pulse rate of 2 THz frequency. The laser pulse sequence is used as the driving laser for a photocathode radio frequency (RF) gun. The RF gun generates the pre-bunched electron beams into an undulator for immediate superradiation. Terahertz (THz) radiation, based on a free electron laser (FEL) at a megawatt (MW) level, could be achieved from a compact FEL facility. We describe the laser handling technology for a 16-pulse laser. The detailed calculation of the bunching factor due to the injection phase, beam charge, and bunch number, as well as the differences in the time spacing and energy spread among the laser pulses, are also presented. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：S172 / S176

页数：5

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NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2008, 584 (01) :1-8

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