Research on Backward Traveling Wave Electron Linac

Chen Huaibi; Zheng Shuxin; bang Xiaodong; Lin Yuzheng

Chinese Physics C> 1999, Vol. 23> Issue(5) : 496-503

Research on Backward Traveling Wave Electron Linac

Department of Engineering Physics, Tsinghua University, Beijing 100084

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Abstract：
Future electron linacs require high gradient acceleration. In this paper, the studies on the high shunt impedance backward traveling wave electron linac accelerating stature (BTW) are presented. At first, the characteristics of BTW are researched. The option of mode and optimal design methods of ascelerating cavity for BTW are stUdied. A Physical design method for BTW accelerators, including longitudinal and transversal particle dynamics, is given. Based on above studies, a 9MeV BTW accelerating tube at 3π/4 mode with frequency 2856MHz for inspechng large container as radiation source at customs is designed, and a comparison with disk-loaded wavegulde accelerating tube is made. The result of research leads to the conclusion that backward traveling wave accelerating struture is preferable. Because BTW has higher effechve shunt impedance, shoder filling bine and more stable operation.

References

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Miller R H. SLAC–303, 1986, 200 2 Chrault P, Tronc D. EPAC 88, 1988, 1114 3 Tronc D, Tran D T, Bourat C et al. IEEE PAC 1991, 1991, 31804 Chrault P. IEEE PAC 1991, 1991, 30055 Naple D E, Knapp E A, Knapp B C Rev Scien. Instr, 1967, 38:1583 6 boostDlle P, Helm R R Mshikawa T Linear Accelerators, Amsterdam, North–holland publ, 1970, 805 7 un Yuzheflg. Pnnclple of Low Enefgy Electron Linear Accelerators(In Ctijnese). Teaching Matenals, Tsinghua University 1990 (林郁正.低能电子直线加速器原理,清华大学讲义, 1990)8 Ding Xiaedong. Master Thesis(in Chinese), Tsinghua University, 1995 (丁晓东.清华大学硕土论文,1995)9 Chen Huaibi, Lin Yuzheng, Tong Dechun et al. IEEE PAC 1997, 1997

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Chen Huaibi, Zheng Shuxin, bang Xiaodong and Lin Yuzheng. Research on Backward Traveling Wave Electron Linac[J]. Chinese Physics C, 1999, 23(5): 496-503.

Chen Huaibi, Zheng Shuxin, bang Xiaodong and Lin Yuzheng. Research on Backward Traveling Wave Electron Linac[J]. Chinese Physics C, 1999, 23(5): 496-503. shu

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Received: 1998-04-27
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

Research on Backward Traveling Wave Electron Linac

Corresponding author: Chen Huaibi,

Department of Engineering Physics, Tsinghua University, Beijing 100084

Received Date: 1998-04-27
Accepted Date: 1900-01-01
Available Online: 1999-05-05

Abstract: Future electron linacs require high gradient acceleration. In this paper, the studies on the high shunt impedance backward traveling wave electron linac accelerating stature (BTW) are presented. At first, the characteristics of BTW are researched. The option of mode and optimal design methods of ascelerating cavity for BTW are stUdied. A Physical design method for BTW accelerators, including longitudinal and transversal particle dynamics, is given. Based on above studies, a 9MeV BTW accelerating tube at 3π/4 mode with frequency 2856MHz for inspechng large container as radiation source at customs is designed, and a comparison with disk-loaded wavegulde accelerating tube is made. The result of research leads to the conclusion that backward traveling wave accelerating struture is preferable. Because BTW has higher effechve shunt impedance, shoder filling bine and more stable operation.