Simulation of Smith-Purcell radiation from compact terahertz source

bei hua; dai dong-dong; dai zhi-min

Volume 20 Issue 12

Dec. 2008

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bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

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bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

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Simulation of Smith-Purcell radiation from compact terahertz source

1.
Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100049,China

Publish Date: 2008-12-15

Abstract

Abstract

The characteristics of stimulated Smith-Purcell radiation in THz region are simulated and numerically calculated. The experimental device is designed to be compact. The notion of the design for the experiment device is originated from the prototype of the Shanghai Electron Beam Ion Trap. Strong axial magnetic field is necessary to achieve high current and low emittance of electron beam. The simulation results of dynamic characteristics for the electron beam show that an average beam current can be as high as 0.2 A with an RMS beam radius of 75 μm, which is the precondition to work as free electron laser(FEL) while passing over the grating surface. Based on the theory of Andrews and Brau, we have optimized the parameters of grating to ensure the emission angle is near 60°. And the calcula
- smith-purcell radiation,
- free electron laser,
- thz source,
- particle-in-cell simulation,
- post processing

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