Beam dynamics simulations of the injector for a compact THz source

LI Ji; PEI Yuan-Ji; SHANG Lei; FENG Guang-Yao; HU Tong-Ning; CHEN Qu-Shan; LI Cheng-Long

doi:10.1088/1674-1137/38/8/088103

Chinese Physics C> 2014, Vol. 38> Issue(8) : 088103 DOI: 10.1088/1674-1137/38/8/088103

Beam dynamics simulations of the injector for a compact THz source

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Abstract：
Terahertz radiation has broad application prospects due to its ability to penetrate deep into many organic materials without the damage caused by ionizing radiations. A free electron laser (FEL)-based THz source is the best choice to produce high-power radiation. In this paper, a 14 MeV injector is introduced for generating high-quality beam for FEL, is composed of an EC-ITC RF gun, compensating coils and a travelling-wave structure. Beam dynamics simulations have been done with ASTRA code to verify the design and to optimize parameters. Simulations of the operating mode at 6 MeV have also been executed.

References

[1]

XIONG Yong-Qian et al. Chinese Physics C (HEP NP), 2008, 32(Suppl. I): 301 (in Chinese)[2] PEI Yuan-Ji et al. Design of 14 MeV LINAC for THz Source based FEL. Proc. of the IPAC. 2013[3] Stephan F et al. PRST-AB, 2010, 13(2): 020704-2[4] Tanaka T et al. An Independently Tunable Cells Thermionic RF Gun (ITC-RF Gun) for Sub-picosecond Short Pulse. Proc. of the 27th International Free Electron Laser Conference. 2005[5] PANG Jian et al. High Power Laser and Particle Beams, 2009, 21(7): 1063[6] PANG Jian. Research and Development of Independently Tunable Cells RF Gun with External Injecting Structure (Ph.D. Thesis). Hefei: University of Science and Technology, 2010 (in Chinese)[7] LI Ji et al. Study of an Electron Gun for Terahertz Radiation Source. Proc. of the IPAC. 2013[8] VECTOR FIELDS, OPERA-3D User Guide, 2000[9] CST, CST Particle Studio User Manual, 2006[10] LAACG. Poisson-Superfish User Manual, 2002[11] Floettmann K. ASTRA User Manual, 2005[12] CHEN Qu-Shan. Internal Note About Short Lens and Solenoid Design. 2012

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LI Ji, PEI Yuan-Ji, SHANG Lei, FENG Guang-Yao, HU Tong-Ning, CHEN Qu-Shan and LI Cheng-Long. Beam dynamics simulations of the injector for a compact THz source[J]. Chinese Physics C, 2014, 38(8): 088103. doi: 10.1088/1674-1137/38/8/088103

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Received: 2013-10-31
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Beam dynamics simulations of the injector for a compact THz source

Corresponding author: SHANG Lei,

Received Date: 2013-10-31
Accepted Date: 1900-01-01
Available Online: 2014-08-05

Abstract: Terahertz radiation has broad application prospects due to its ability to penetrate deep into many organic materials without the damage caused by ionizing radiations. A free electron laser (FEL)-based THz source is the best choice to produce high-power radiation. In this paper, a 14 MeV injector is introduced for generating high-quality beam for FEL, is composed of an EC-ITC RF gun, compensating coils and a travelling-wave structure. Beam dynamics simulations have been done with ASTRA code to verify the design and to optimize parameters. Simulations of the operating mode at 6 MeV have also been executed.