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]	Rui-Xuan Huang , Chad Mitchell , Qi-Ka Jia , Christos Papadopoulos , Fernando Sannibale . Simulation study on the emittance compensation of off-axis emitted beam in RF photoinjector. Chinese Physics C, 2016, 40(11): 117004. doi: 10.1088/1674-1137/40/11/117004
[2]	YUAN Yao-Shuo , LI Kai-Wei , WANG Na , Yoshiro Irie , WANG Sheng . Study of the beam loading effect in the CSNS/RCS. Chinese Physics C, 2015, 39(4): 047003. doi: 10.1088/1674-1137/39/4/047003
[3]	CHENG Peng , PEI Shi-Lun , WANG Jiu-Qing , LI Zhi-Hui . Effect of the transverse parasitic mode on beam performance for the ADS driver linac in China. Chinese Physics C, 2015, 39(5): 057002. doi: 10.1088/1674-1137/39/5/057002
[4]	LI Wei-Wei , HE Zhi-Gang , JIA Qi-Ka . Compact narrow-band THz radiation source based on photocathode rf gun. Chinese Physics C, 2014, 38(4): 047003. doi: 10.1088/1674-1137/38/4/047003
[5]	HU Tong-Ning , CHEN Qu-Shan , PEI Yuan-Ji , LI Ji , QIN Bin . Physical design of FEL injector based on the performance-enhanced EC-ITC RF gun. Chinese Physics C, 2014, 38(1): 018101. doi: 10.1088/1674-1137/38/1/018101
[6]	LIU Guo-Fu , LUO Xiao-Liang , YANG Jun , LIN Cun-Bao , HU Qing-Qing , PENG Jin-Xian . Baseline drift effect on the performance of neutron and γ ray discrimination using frequency gradient analysis. Chinese Physics C, 2013, 37(6): 066201. doi: 10.1088/1674-1137/37/6/066201
[7]	LI Wei-Wei , HE Zhi-Gang , JIA Qi-Ka . Generation and measurement of sub-picosecond electron bunch in photocathode rf gun. Chinese Physics C, 2013, 37(12): 127002. doi: 10.1088/1674-1137/37/12/127002
[8]	ZHAO Wei , FU Guo-Tao , SUN Cui-Li , WANG Yan-Fang , WEI Cun-Feng , CAO Da-Quan , QUE Jie-Min , TANG Xiao , SHI Rong-Jian , WEI Long , YU Zhong-Qiang . Beam hardening correction for a cone-beam CT system and its effect on spatial resolution. Chinese Physics C, 2011, 35(10): 978-985. doi: 10.1088/1674-1137/35/10/018
[9]	LIU Sheng-Guang , HUANG Tong-Ming , XU Jin-Qiang . BXERL photo-injector based on a 217 MHz normal conducting RF gun. Chinese Physics C, 2011, 35(9): 865-869. doi: 10.1088/1674-1137/35/9/015
[10]	ZHU Xiong-Wei . Study on the W-band photocathode RF gun. Chinese Physics C, 2011, 35(12): 1159-1161. doi: 10.1088/1674-1137/35/12/015
[11]	LIU Sheng-Guang , Masafumi Fukuda , Sakae Araki , Nobuhiro Terunuma , Junji Urakawa . Emittance measurement & optimization for the photocathode RF gun with laser profile shaping. Chinese Physics C, 2010, 34(5): 584-588. doi: 10.1088/1674-1137/34/5/014
[12]	YAO Zhong-Yuan , LU Xiang-Yang , ZHANG Bao-Cheng , QUAN Sheng-Wen , HE Fei-Si , ZHAO Kui . Analysis of the impacts of mechanical errors on the RF performance of a single spoke cavity. Chinese Physics C, 2010, 34(5): 576-579. doi: 10.1088/1674-1137/34/5/012
[13]	WANG Fang , LU Xiang-Yang , WANG Er-Dong , ZHAO Kui . Study on the RF performance of 2-cell superconducting cavity. Chinese Physics C, 2009, 33(1): 74-76. doi: 10.1088/1674-1137/33/1/015
[14]	TANG Chuan-Xiang , LIU Xiao-Han . Ultra-low emittance X-band photocathode RF gun. Chinese Physics C, 2009, 33(S2): 102-104. doi: 10.1088/1674-1137/33/S2/026
[15]	CHU Jian-Hua , TONG De-Chun , ZHAO Zhen-Tang . RF measurements of a C-band cavity beam position monitor. Chinese Physics C, 2008, 32(5): 385-388. doi: 10.1088/1674-1137/32/5/012
[16]	WANG Ping , MA Yan-Yun , QIN Xiu-Bo , ZHANG Zhe , CAO Xing-Zhong , YU Run-Sheng , WANG Bao-Yi . Performance of the plugged-in ²²Na based slow positron beam facility. Chinese Physics C, 2008, 32(3): 243-246. doi: 10.1088/1674-1137/32/3/017
[17]	GU Qiang , ZHAO Zhen-Tang , TONG De-Chun , CHEN Li-Fang , XU Xiu-Min . RF gun for an intense THz radiation source. Chinese Physics C, 2008, 32(8): 657-660. doi: 10.1088/1674-1137/32/8/014
[18]	Tang Chuanxiang , Lin Yuzheng , Wu Yuanming , Wang Youzhi , Zhao Xinqiao , Xie Jialin . Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode. Chinese Physics C, 1997, 21(S2): 91-95.
[19]	Tang Chuanxiang , Lin Yuzheng , Tong Dechun , Wu Yuanming , Wang Youzhi , Zhao Xinqiao , Xie Jialin . R&D of a Multi-Cavity RF Gun with Thermionic Cathode for BFEL. Chinese Physics C, 1997, 21(S2): 85-90.
[20]	Huang Yongzhang , Wu Gang . Transient Beam Loading Effect in Constant Gradient Accelerator Structure. Chinese Physics C, 1994, 18(Z1): 113-120.

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(1877)
PDF Downloads(197)
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.

HTML

Reference (1)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article