Design and Beam Dynamic Studies of an Injector for a Compact THz Coherent Radiation Source

Particles

article

Siriwan Jummunt¹  Wanisa Promdee¹  Thakonwat Chanwattana¹  Nawin Junthong¹  Somjai Chunjarean¹  Supat Klinkhieo¹ 

[1] Synchrotron Light Research Institute

关键词: high-brightness radiation;    photocathode RF gun;    space charge effect;    laser pulse shaping;   

DOI  :  10.3390/particles6020040

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

An intense narrow-band terahertz (THz) radiation source has been designed to generate a broad tuning range of radiation frequencies between 0.5 THz and 5.0 THz. The THz radiation is produced when a short-bunch electron beam propagates through an undulator. To achieve high-power peak radiation, the source requires high-brightness electron beams with low beam emittance and short bunch length. A proposed design for the photocathode RF gun used as the electron source is presented. The gun with high mode separation and high Q-factor can be achieved for producing a good beam quality. The beam dynamics of the injector have been preliminarily optimized using the software ASTRA and Elegant, investigating the impact of laser pulse shape on electron beam quality. The results of the beam dynamics studies are comprehensively discussed in this paper.

【 授权许可】

CC BY