Research on Changes of Focusing Structure Parameters Caused by the DC-Clearing Electric Field of Storage Ring

Wang Xiangqi; Pei Yuanji; Dong Xiaoli; Xu Hongliang; Shang Lei; Wang Lin; Fan Kuanjun; Fang Zhigao; Yao Chenggui; Hu Shouming; Lou Xuefang

Chinese Physics C> 1998, Vol. 22> Issue(8) : 755-762

Research on Changes of Focusing Structure Parameters Caused by the DC-Clearing Electric Field of Storage Ring

National Synchrotron Radiation Laboratory, University of Science and Technolog of China, Hefei230029

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Abstract：
The changes of focusing structure parameters caused by the DC-clearing electric field of storage ring were researched. The conclusion is made that tune shift caused by the DC-clearing electric field is related to the real-time close orbit of stored beam. The clearing electric field asymmetrically distributed along the ring destroys the symmetry of the focusing structure and decreases the acceptance of storage ring. It has negative effect to the injection and accumulation process in certain condition.

References

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He Duohui. Int. J. Mod. Phys. A(P.S.), 1993, 2A: 552-554[2] Pei Y J. Report progress of Hefei Synch. Radia. Light Source In: Liang Xiuru et al. Proc. of First Taiwan Straits Smyp. on Synch. Radia (in Chinese). Bejing: Particle Accelerator Society of China, 1993.40-47(裴元吉。合肥同步辐射光源进展报告。见:梁岫如等编。第一次两岸同步辐射学术研会论文集。北京:中国粒子加速器学会,1993,40─47)[3] Yao C Y, Pei Y J. In: Yiton T. Yan et al. AIP Confe. Procee. 326. New York: AIP Press, 1993. 197-201[4] Pei Y J. Jour. of China of Sci. and Tech., 1995, 25:64-67[5] Chen L, Sun B, Wang J et al. Single bunch instabi. in HLS ring. In: Weiren Chou et al. Procee. of the Worlshop on Beam Instabilities in Storage Rings. Hefei: Press of USTC, 1994. 65-71[6] Wang Xiangqi et al. Journal of China University of Sci. Tech. (in Chinese), 1997, 27(2):228-235(王相綦等。中国科学技术大学学报,1997,27(2),228─235)[7] Wang Xiangqi et al. Study on mechanism of eliminating ion with DC cleaning electrode of HLS storage ring. Journal of China University of Sci. Tech. (in Chinese), 1998, 28(2)(being published)(王相綦等。HLS储存环直流清洗电极清除离子机理的研究。中国科学技术大学学报。1998,28(2),待出版)[8] Autin B. Nonlinear Beta. Oscillations. In: M. Month M.Dienes. AIP Confe. Proc. 153(1)(Physics of Particle Acc., SLAC Summer School). New York: American Institute of Phys., 1985. 288-347[9] Kohaupt R D. Interner Bericht DESY H1-71/2, 1971[10] Kasuga T et al. IEEE Trans. Nucl. Sci., 1985, NS-32(5):2550-2552[11] Kasuga T et al. Jpn. Jour. of Appl. Phys., 1985, 24(9): 1212-1217[12] Kasuga T. Jpn. Jour. of Appl. Phys., 1986, 25(11): 1711-1716[13] Courant E D, Snyder H S. Annals of Physics, 1958, 3:1-11

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Wang Xiangqi, Pei Yuanji, Dong Xiaoli, Xu Hongliang, Shang Lei, Wang Lin, Fan Kuanjun, Fang Zhigao, Yao Chenggui, Hu Shouming and Lou Xuefang. Research on Changes of Focusing Structure Parameters Caused by the DC-Clearing Electric Field of Storage Ring[J]. Chinese Physics C, 1998, 22(8): 755-762.

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Received: 1900-01-01
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 Changes of Focusing Structure Parameters Caused by the DC-Clearing Electric Field of Storage Ring

Corresponding author: Wang Xiangqi,

National Synchrotron Radiation Laboratory, University of Science and Technolog of China, Hefei230029

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1998-08-05

Abstract: The changes of focusing structure parameters caused by the DC-clearing electric field of storage ring were researched. The conclusion is made that tune shift caused by the DC-clearing electric field is related to the real-time close orbit of stored beam. The clearing electric field asymmetrically distributed along the ring destroys the symmetry of the focusing structure and decreases the acceptance of storage ring. It has negative effect to the injection and accumulation process in certain condition.