Dynamics Study of the Rhodotron Accelerator

CHEN Yong; HUANG Wen-Hui; TANG Chuan-Xiang

Chinese Physics C> 2005, Vol. 29> Issue(2) : 180-185

Dynamics Study of the Rhodotron Accelerator

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

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Abstract：
A new CW electron accelerator with a single compact rf cavity, the rhodotron, has been applied widely in many fields of industrial irradiation. the paper focuses on dynamics characteristics of the rhodotron. the longitudinal and transverse dynamics simulations have been performed with the Parmela code. in this paper,synchronous condition of beam acceleration is deduced and the process of longitudinal phase capture is also studied.The problem that bulks overlap each other in the center of the RF cavity under the CW mode is solved by adjusting The parameters of bending magnets. the process that the major traverse focusing is achieved using the bending magnets is analyzed carefully.It is generalized how the space charge effect and the variation of initial parameters impact on transverse beam stability. the distribution of beam losing power is calculated for the radiation protection of this machine. the simulation results agree with The operational parameters of the Rhodotron's prototype, which confirm the research method's feasibility.

References

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. Machi S. Role of Radiat ion Processing for Sust ainable Development. In:IAEA. IAEA-TECDOC-1386, Emerging Applicat ions of Radiation Processing. Austria: IAEA, 2004. 52. Pottier J. Nucl. Instrum. Methods, 1989, B40/ 41: 9433. Hayashizaki N, Hattori I, Odera M. Nucl. Instrum. Methods, 1999,A427: 284. Kwon H J et al. Proc. of PAC'99. 1999, 4: 2558-25605. Rossbach J, Schmser P. Basic Course on Accelerator Opt ics. In:Turner S ed. . CAS Fifth General Accelerator Physics Course. Geneva:CERN, 1994. 17

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CHEN Yong, HUANG Wen-Hui and TANG Chuan-Xiang. Dynamics Study of the Rhodotron Accelerator[J]. Chinese Physics C, 2005, 29(2): 180-185.

CHEN Yong, HUANG Wen-Hui and TANG Chuan-Xiang. Dynamics Study of the Rhodotron Accelerator[J]. Chinese Physics C, 2005, 29(2): 180-185. shu

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Received: 2004-06-03
Revised: 2004-07-13

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沈阳化工大学材料科学与工程学院沈阳 110142

Dynamics Study of the Rhodotron Accelerator

Corresponding author: CHEN Yong,

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

Received Date: 2004-06-03
Accepted Date: 2004-07-13
Available Online: 2005-02-05

Abstract: A new CW electron accelerator with a single compact rf cavity, the rhodotron, has been applied widely in many fields of industrial irradiation. the paper focuses on dynamics characteristics of the rhodotron. the longitudinal and transverse dynamics simulations have been performed with the Parmela code. in this paper,synchronous condition of beam acceleration is deduced and the process of longitudinal phase capture is also studied.The problem that bulks overlap each other in the center of the RF cavity under the CW mode is solved by adjusting The parameters of bending magnets. the process that the major traverse focusing is achieved using the bending magnets is analyzed carefully.It is generalized how the space charge effect and the variation of initial parameters impact on transverse beam stability. the distribution of beam losing power is calculated for the radiation protection of this machine. the simulation results agree with The operational parameters of the Rhodotron's prototype, which confirm the research method's feasibility.