Beam tail effect of a performance-enhanced EC-ITC RF gun
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 ca...
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| Published in | Chinese physics C Vol. 37; no. 12; pp. 119 - 124 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.12.2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1137 0254-3052 |
| DOI | 10.1088/1674-1137/37/12/128101 |
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| 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. |
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| AbstractList | 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. 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. |
| Author | 胡桐宁 裴元吉 秦斌 陈曲珊 |
| AuthorAffiliation | State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China |
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| Cites_doi | 10.3788/HPLPB20112310.2729 10.1016/0168-9002(89)90688-8 10.1016/j.nima.2013.06.011 10.1016/S0168-9002(04)01439-1 |
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| Notes | 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. 11-5641/O4 EC-ITC, thermionic RF gun, beam tail effect, multi-pulses, FEL injector, beam dynamics HU Tong-Ning, PEI Yuan-Ji, QIN Bin, CHEN Qu-Shan（1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China 2 National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China） ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | Tan Ping (11) 2009 Zhu Ling (7) 2004; 16 12 13 Pei Yuan-Ji (10) 2010 Limborg C (16) 2003 Young L (15) 1998 Tanaka T (6) 2005 Rimjaem S (1) 2004; 533 Tang Chuan-Xiang (5) 1997; 21 Pang Jian (9) 2009; 21 Tang Chuan-Xiang (4) 1997; 21 Lewellen J W (3) 2003 Hama H (2) 2004; 528 Billen J H (14) 2002 8 |
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| SubjectTerms | Electron beams Free electron lasers Holes Injectors Laser beams Mathematical analysis MATLAB Thermionics 同时使用 射频场 工作状态 微波电子枪 性能增强 空间电荷场 自由电子激光器 |
| Title | Beam tail effect of a performance-enhanced EC-ITC RF gun |
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