Remagnetizing Utilization of the Radiation Damaged Wiggler

LI Ya-Nan; LI Yong-Gui; LU Hui-Hua; LI Cheng-Ze

Chinese Physics C> 2001, Vol. 25> Issue(9) : 903-908

Remagnetizing Utilization of the Radiation Damaged Wiggler

Institute of High Energy Physics,CAS,Beijing 100080,China

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Abstract：
In this paper,a study of the radiation damage and re-magnetizing utilization of the permanent magnet wiggler used in the Beijing Free Electron Laser facility is reported. For the radiation damaged wiggler,the magnetic strength can be restored to the original value by magnet re magnetization,arrangement optimization and re assembly. The preliminary experimental result shows that the effective lifetime of the re-magnetized wiggler can be longer than the original wiggler under the same beam radiation condition. Also the mechanism of the magnet damage by radiation and the modification method are discussed.

References

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. XIE Jia-Lin,ZHUANG Jie-Jia,ZHAO Chun-Nong et al.Nucl.Instr. Meth.,1991,A304:770(in Chinese)(谢家麟,庄杰佳,赵春农等.核仪器和物理方法,1991,A304:770) 2. HUANG Min,LI Yong-Gui,ZHAO Chun-Nong.High Energy Phys.and Nucl.Phys.,1991,15(9):776(in Chinese)(黄敏,李永贵,赵春农.高能物理与核物理,1991,15(9):776)3. ZHAO Chun-Nong,ZHONG Yuan-Yuan,LI Yong-Gui et al.High Power Laser and Particle Beams,1994,6(1):131(in Chinese)(赵春农,钟元元,李永贵等.强激光与粒子束,1994,6(1):131)

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LI Ya-Nan, LI Yong-Gui, LU Hui-Hua and LI Cheng-Ze. Remagnetizing Utilization of the Radiation Damaged Wiggler[J]. Chinese Physics C, 2001, 25(9): 903-908.

LI Ya-Nan, LI Yong-Gui, LU Hui-Hua and LI Cheng-Ze. Remagnetizing Utilization of the Radiation Damaged Wiggler[J]. Chinese Physics C, 2001, 25(9): 903-908. shu

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Received: 2000-08-23
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

Remagnetizing Utilization of the Radiation Damaged Wiggler

Corresponding author: LI Ya-Nan,

Institute of High Energy Physics,CAS,Beijing 100080,China

Received Date: 2000-08-23

Accepted Date: 1900-01-01

Available Online: 2001-09-05

Abstract: In this paper,a study of the radiation damage and re-magnetizing utilization of the permanent magnet wiggler used in the Beijing Free Electron Laser facility is reported. For the radiation damaged wiggler,the magnetic strength can be restored to the original value by magnet re magnetization,arrangement optimization and re assembly. The preliminary experimental result shows that the effective lifetime of the re-magnetized wiggler can be longer than the original wiggler under the same beam radiation condition. Also the mechanism of the magnet damage by radiation and the modification method are discussed.

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Remagnetizing Utilization of the Radiation Damaged Wiggler

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