Beam tail effect of a performance-enhanced EC-ITC RF gun

HU Tong-Ning; PEI Yuan-Ji; QIN Bin; CHEN Qu-Shan

doi:10.1088/1674-1137/37/12/128101

Chinese Physics C> 2013, Vol. 37> Issue(12) : 128101 DOI: 10.1088/1674-1137/37/12/128101

Beam tail effect of a performance-enhanced EC-ITC RF gun

Abstract
HTML
Reference
Related

PDF

Abstract：
The beam tail effect of multi-bunches will influence the electron beam performance in a high intensity thermionic RF gun. Beam dynamic calculations that illustrate the working states of single beam tail and multi-pulse feed-in of a performance-enhanced EC-ITC (external cathode independent tunable cavity) RF gun for an FEL (free electron laser) injector are performed to estimate the extracted bunch properties. By using both Parmela and homemade MATLAB codes, the effects of a single beam tail as well as interactions of multi-pulses are analyzed, where a ring-based electron algorithm is adopted to calculated RF fields and the space-charge field. Furthermore, the procedure of unexpected deviated-energy particles mixed with an effective bunch head is described by the MATLAB code as well. As a result, the performance-enhanced EC-ITC RF gun is proved to have the capability to extract continual stable bunches suitable for a high requirement THz-FEL.

References

[1]

Rimjaem S et al. Nucl. Instrum. Methods A, 2004, 533: 258[2] Hama H et al. Nucl. Instrum. Methods A, 2004, 528: 271[3] Lewellen J W. Energy-Spread Compensation of a Thermionic-Cathode RF Gun. Proc. of the 2003 Particle Accelerator Conference. 2003[4] TANG Chuan-Xiang et al. High Energy Physics and Nuclear Physics, 1997, 21(efeq4): 378 (in Chinese)[5] TANG Chuan-Xiang et al. High Energy Physics and Nuclear Physics, 1997, 21(efeq5): 470 (in Chinese)[6] 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[7] ZHU Ling et al. High Power Laser and Particle Beams, 2004, 16(8): 1033 (in Chinese)[8] BAI Wei et al. High Power Laser and Particle Beams, 2011, 23(10): 2729 (in Chinese)[9] PANG Jian et al. High Power Laser and Particle Beams, 2009, 21(7): 1063 (in Chinese)[10] PEI Yuan-Ji et al. R D on a Compact EC-ITC RF Gun for FEL. Proc. of the 2010 International Particle Accelerator Conference. 2010[11] TAN Ping et al. Simulation and Optimization Research of a THz Free-Electron Laser Oscillator. Proc. of the 2009 Particle Accelerator Conference. 2009[12] QIN B et al. Nucl. Instrum. Methods A, 2013, 727: 90[13] Kim K J. Nucl. Instrum. Methods. A, 1989, 275: 201[14] Billen J H, YOUNG L M. Poission Superfish Manual, LANL, 2002[15] YOUNG L. PARMELA Manual, LANL. 1998[16] Limborg C et al. Code Comparison for Simulations of Photo-Injectors, Proc. of the 2003 Particle Accelerator Conference. 2003

[1]	Peng Yin , Jianmin Dong , Wei Zuo . Effect of tensor correlations on the depletion of nuclear Fermi sea within the extended BHF approach. Chinese Physics C, 2017, 41(11): 114102. doi: 10.1088/1674-1137/41/11/114102
[2]	YAN Jia-Qing , XIE Yu-Guang , HU Tao , LU Jun-Guang , ZHOU Li , QU Guo-Pu , CAI Xiao , NIU Shun-Li , CHEN Hai-Tao . Simulation and performance study of ceramic THGEM. Chinese Physics C, 2015, 39(6): 066001. doi: 10.1088/1674-1137/39/6/066001
[3]	HUANG Jiang , XIONG Yong-Qian , CHEN De-Zhi , LIU Kai-Feng , YANG Jun , LI Dong , YU Tiao-Qin , FAN Ming-Wu , YANG Bo . A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator. Chinese Physics C, 2014, 38(10): 107008. doi: 10.1088/1674-1137/38/10/107008
[4]	M. Bashkanov (for the WASA-at-COSY collaboration) . ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin. Chinese Physics C, 2010, 34(9): 1339-1341. doi: 10.1088/1674-1137/34/9/037
[5]	ZHANG Da-Lin , QIU Sui-Zheng , LIU Chang-Liang , SU Guang-Hui . Steady state investigation on neutronics of a molten salt reactor considering the flow effect of fuel salt. Chinese Physics C, 2008, 32(8): 624-628. doi: 10.1088/1674-1137/32/8/007
[6]	WANG Man , LI Jin , CUI Xiang-Zong , XIA Xiao-Mi , LAI Yuan-Fen , YAO Xiao-Guang . PROTOTYPE OF END CAP SHOWER COUNTERAND ITS BEAM TEST. Chinese Physics C, 1987, 11(3): 321-326.

Access

Get Citation

HU Tong-Ning, PEI Yuan-Ji, QIN Bin and CHEN Qu-Shan. Beam tail effect of a performance-enhanced EC-ITC RF gun[J]. Chinese Physics C, 2013, 37(12): 128101. doi: 10.1088/1674-1137/37/12/128101

HU Tong-Ning, PEI Yuan-Ji, QIN Bin and CHEN Qu-Shan. Beam tail effect of a performance-enhanced EC-ITC RF gun[J]. Chinese Physics C, 2013, 37(12): 128101. doi: 10.1088/1674-1137/37/12/128101 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2013-02-25
Revised: 1900-01-01

Article Metric

Article Views(2942)
PDF Downloads(198)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Beam tail effect of a performance-enhanced EC-ITC RF gun

Corresponding author: QIN Bin,

Received Date: 2013-02-25
Accepted Date: 1900-01-01
Available Online: 2013-12-05

Abstract: The beam tail effect of multi-bunches will influence the electron beam performance in a high intensity thermionic RF gun. Beam dynamic calculations that illustrate the working states of single beam tail and multi-pulse feed-in of a performance-enhanced EC-ITC (external cathode independent tunable cavity) RF gun for an FEL (free electron laser) injector are performed to estimate the extracted bunch properties. By using both Parmela and homemade MATLAB codes, the effects of a single beam tail as well as interactions of multi-pulses are analyzed, where a ring-based electron algorithm is adopted to calculated RF fields and the space-charge field. Furthermore, the procedure of unexpected deviated-energy particles mixed with an effective bunch head is described by the MATLAB code as well. As a result, the performance-enhanced EC-ITC RF gun is proved to have the capability to extract continual stable bunches suitable for a high requirement THz-FEL.