Simulation of the Electron Cloud Density in BEPCⅡ

LIU Yu-Dong; GUO Zhi-Yuan; WANG Jiu-Qing

Chinese Physics C> 2004, Vol. 28> Issue(3) : 222-226

Simulation of the Electron Cloud Density in BEPCⅡ

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039,China

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Abstract：
Electron Cloud Instability (ECI) may take place in positron storage ring when the machine is operated with multi-bunch positron beam. According to the actual shape of the vacuum chamber in the BEPCⅡ, a program has been developed. With the code, we can calculate the electron density in the chamber with different length of antechamber and the different secondary electron yield respectively. By the simulation, the possibility to put clearing electrodes in the chamber to reduce the electron density in the central region of the chamber is investigated. The simulation provides meaningful and important results for the BEPCⅡ project and electron cloud instability research.

References

[1]

.GUO Zhi2Yuan et al.HEP NP,2001,25(3):251)257(in Chinese)(国智元等.高能物理与核物理,2001,25(3):251-257)2.Fukuma H et al.EPAC2000,Vienna,June 20003.Furman M A et al.PAC.97,Vancouver,19974.Ohmi K.Phys.Rev.Lett.,1995,75:15265.Furman MA,Lambertson G.LBNL- 41123,19976.LIU Yu2Dong et al.IHEP2AC2AP2NoteP2003230,2003(in Chinese)(刘瑜冬等.IHEP2AC2AP2Not eP2003230,2003)7.Bruning O.LHC Project Report,1997,1588.Kirby R E,King F K.SLAC2PUB28212,20009.Bsssett i M,Erskine G A.CERN2ISR2THP802 06,198010.Ssetsugu Y et al.Journal of Vacuum Science Technology A.,2003,Vol.21

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LIU Yu-Dong, GUO Zhi-Yuan and WANG Jiu-Qing. Simulation of the Electron Cloud Density in BEPCⅡ[J]. Chinese Physics C, 2004, 28(3): 222-226.

LIU Yu-Dong, GUO Zhi-Yuan and WANG Jiu-Qing. Simulation of the Electron Cloud Density in BEPCⅡ[J]. Chinese Physics C, 2004, 28(3): 222-226. shu

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Received: 2003-09-26
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

Simulation of the Electron Cloud Density in BEPCⅡ

Corresponding author: LIU Yu-Dong,

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039,China

Received Date: 2003-09-26
Accepted Date: 1900-01-01
Available Online: 2004-03-05

Abstract: Electron Cloud Instability (ECI) may take place in positron storage ring when the machine is operated with multi-bunch positron beam. According to the actual shape of the vacuum chamber in the BEPCⅡ, a program has been developed. With the code, we can calculate the electron density in the chamber with different length of antechamber and the different secondary electron yield respectively. By the simulation, the possibility to put clearing electrodes in the chamber to reduce the electron density in the central region of the chamber is investigated. The simulation provides meaningful and important results for the BEPCⅡ project and electron cloud instability research.