Design of a Pre-Bunched THz Free Electron Laser
Abstract
:1. Introduction
2. Experimental Apparatus
2.1. Photocathode rf Gun
2.2. Laser System
2.3. Linear Accelerator
2.4. Undulator
2.5. Transport Optics
3. Simulation Results
3.1. Electron Beam
3.2. Coherent Radiation
3.3. THz Transmission
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
Abbreviations
THz | terahertz |
FEL | free electron laser |
MW | megawatt |
fs | femtosecond |
linac | linear accelerator |
UV | ultraviolet |
PM | paraboloid |
UHV | ultrahigh vacuum |
ps | picosecond |
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Parameter | Value |
---|---|
electron energy | 11 to 18 MeV |
microbunches | 16 |
total charge | 240 pC |
fundamental frequency | 0.5 to 3.0 THz |
bunching factor | ≥0.4 |
Radiation Frequency (THz) | Radiation Characteristics at Undulator Exit | ||||
---|---|---|---|---|---|
Peak Power (MW) | Pulse Energy (J) | Pulse Width (ps) | Radiation Bandwidth (%) | ||
0.5 | Fundamental wave | 0.165 | 4.01 | 72 | 19.8 |
1.0 | 1.07 | 18.03 | 36 | 8.5 | |
2.5 | 2.97 | 18.18 | 14.4 | 4.6 | |
3.0 | 7.00 | 31.01 | 12 | 5.2 | |
3.0 | 2nd harmonic wave | 0.61 | 3.83 | 17.3 | 6.8 |
4.0 | 0.256 | 1.21 | 13 | 6.2 | |
5.0 | 0.11 | 0.54 | 10.4 | 9.4 |
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Huang, R.; Li, W.; Zhao, Z.; Li, H.; Wang, J.; Ma, T.; Huang, Q.; He, Z.; Jia, Q.; Wang, L.; et al. Design of a Pre-Bunched THz Free Electron Laser. Particles 2018, 1, 267-278. https://doi.org/10.3390/particles1010021
Huang R, Li W, Zhao Z, Li H, Wang J, Ma T, Huang Q, He Z, Jia Q, Wang L, et al. Design of a Pre-Bunched THz Free Electron Laser. Particles. 2018; 1(1):267-278. https://doi.org/10.3390/particles1010021
Chicago/Turabian StyleHuang, Ruixuan, Weiwei Li, Zhouyu Zhao, Heting Li, Jigang Wang, Tian Ma, Qiuping Huang, Zhigang He, Qika Jia, Lin Wang, and et al. 2018. "Design of a Pre-Bunched THz Free Electron Laser" Particles 1, no. 1: 267-278. https://doi.org/10.3390/particles1010021