Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider

Li Guangxiao; Fang Shouxian

Chinese Physics C> 1995, Vol. 19> Issue(10) : 952-958

Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider

Li Guangxiao ^, ,
Fang Shouxian

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

Abstract
HTML
Reference
Related

PDF

Abstract：
The design principle and main parameters of the permanent magnet Mini-βscheme for the Beijing Electron Positron Collider (BEPC) are described.In the design,the BEPC storage ring will have a Mini-β insertion and a conventional insertion in the southern and northern interaction regions respectively.The arc and injection regions are kept unchanged. The Mini-β insertion quadrupoles are designed to be permanent magnets.A vertical focusing electromagnet is positioned near each of the two gates of BES so that the dynamics perturbation due to the constant field strength of the permanent magnet in the energy ramping can be compensated. The designed βx*=1.2m, βy* = 0.036m,and the length and strength of the permanent magnets are 0.5m and 8T/m respectively.Compared with running mode now,the designed luminosity is incresed by a factor of about 3.

References

[1]

K.Steffen,Internal Report DESY M-79123,May1979.[2] H.Nesemann et al.,IEEE Irans.onNSNS-30（1983）1998.[3] K.Wille,DORISII/III-A 5.8 Gev Storage Ring with High Luminosity,DESY 81-047Aug.1981.[4] K.Bane et al.,Bunch Length and Impedance Measure mentsin SPEAR,European ParticleAcc.Conf.,P878,Rome,June7-11,1988.[5] 吴英志，BEPC储存环Mini-β磁聚焦结构初步设计，BEPC理论组内部工作报告，83,07.[6] 洪澎，BEPC Mini-β方案的设计和研究，硕士学位论文，高能物理研究所，1987年5月。[7] 国智元等，BEPC亮度预先研究，高能所理论组内部报告，BEPC 17H186-6,1986.[8] Wu Yingzhi et al.,Aproposed Mini-β Scheme for BEPC,Prce.of the Workshop on BEPC,Lumlnosity Upgrades,June1991.[9] 方守贤等，高能物理与核物理，10（1986）207.[10] 李光晓，BEPCMini-β Lattice方案设计及纵向微波不稳定性的初步研究，博士论文，高能物理所，1993年7月。[11] 秦庆，BEPC中束-束相互作用的研究，硕士论文，高能物理所，1991年。[12] S.Myers.Nucl.Znstr.Meth.,211（1983）263.

[1]	LI Tie-Hui , WU Jing-Min , CHEN Zhi-Xing , YU Jie . Radiation Dose Monitoring and Analysis for the Construction of the UpgradedBeijing Electron-Positron Collider (BEPCⅡ) During Its Storage Ring Operation. Chinese Physics C, 2008, 32(S1): 112-114.
[2]	JIA Yong , WANG Ru-Mei , XIANG Shi-Biao . The Study of a Top-Higgs Production Process in LC. Chinese Physics C, 2005, 29(10): 937-939.
[3]	JIA Yong , WANG Ru-Mei , SHANG Ji-Min , XIANG Shi-Biao , YUE Chong-Xing . Study of a Neutral Toppion Production Process in LC. Chinese Physics C, 2004, 28(8): 797-800.
[4]	GUO Zhi-Yuan , QIN Qing , ZHANG Chuang , MA Li . Study on Beam Photoelectron Instability in BEPC. Chinese Physics C, 2001, 25(3): 251-257.
[5]	WANG Sheng , FANG Shou-Xian , ZHANG Chuang . Beam-Beam Study in Beijing Electron Positron Collider mini-β Scheme. Chinese Physics C, 2001, 25(8): 780-786.
[6]	Ma Boqiang . High Precision Test of QCD at Beijing Electron Positron Collider. Chinese Physics C, 1999, 23(9): 922-925.
[7]	Zhou Feng . Study of BEPC Impedance. Chinese Physics C, 1998, 22(8): 739-744.
[8]	Li Yun , Wang Guangwei . Research of Bunch Lengthening of BEPC Ring by Many-Particle Simulation. Chinese Physics C, 1996, 20(10): 950-956.
[9]	Zhao Jijiu , Geng Xiaosong , Yu Yulan , Wang Bingfeng , Wang Chunhong , Xu Jingwei , Liu Wei , Luo Huiying , Wang Yaru , Lu Jihua , Yan Yonghe , Zhan Mingchuan , Wang Youheng . Upgrading at the BEPC Control System. Chinese Physics C, 1996, 20(8): 756-762.
[10]	Guo Zhiyuan , Qin Qing , Zhang Chuang . Study of Bunch Lengthening at BEPC. Chinese Physics C, 1996, 20(11): 1034-1040.
[11]	LIU Liang-Gang . ρ⁰-ω Mixing Effect in the (ρ⁰,ω)→e⁺e^－ Pair Decay. Chinese Physics C, 1993, 17(7): 614-618.
[12]	HONG Rong , WU Ying-Rong , CHAO Zhi-Yu , XIAO Yanan , LI Xue-Jun . Beam Centre Monitoring of 4W1A Beam Line at BEPC and The Observation of XRF Spectra Signal to Noise Ratio. Chinese Physics C, 1993, 17(5): 403-406.
[13]	CHEN Yu , DAI Chang-Jiang , GU Yi-Fan , LEI Zhuan-Heng , LI Jian-Ping , LIU Shu-Dong , SHAO Bei-Bei , TANG Yue-Li . Study on Background Radiation at Beijing Electron Positron Collider and Radiation Damage of High-Z Scintillation Crystals. Chinese Physics C, 1993, 17(8): 673-679.
[14]	LIU Nian-Zong , ZHANG Cai-Di , ZHENG Lin-Sheng , HU Li-Dong , ZHAO Xiao-Jian , ZHONG Xue-Chu , DENG Hu , ZHU Shan-Gen , ZHANG Ge , ZHANG Zhu-Xiang , ZHANG Liang-Sheng , ZHOU Yong-Shen , XU Jian-Guo , TAN Yi-Ping , HAN Shu-Rong , HAN Ying , BAO Xiu-Min . The Test Beam on BEPC and Physics Works on It. Chinese Physics C, 1992, 16(11): 965-977.
[15]	LI Jian-Ping , TANG Yue-Li , LIU Shu-Dong , JIANG Wen-Gui , LEI Chuan-Heng , SHAO Bei-Bei , LI Tie-Hui , CAI Xiao-Ping , ZHANG Qing-Jiang . Measurement of Radiation Dose Level of Synchrotron Radiation Experimental Hall of BEPC. Chinese Physics C, 1992, 16(2): 105-112.
[16]	BES Collaboration . τ Mass Measurement at Beijing Electron Positron Collider (BEPC). Chinese Physics C, 1992, 16(10): 865-875.
[17]	LI Jin , MAO Ze-Pu . The Measurement of Bunch Length of Beijing Electron Positron Collider. Chinese Physics C, 1991, 15(5): 385-390.
[18]	CAO Zhong , LIU Wei-Ren , WANG Li-Lie , XIE Shi-Liang , JIANG Li-Ping , DING Mei-Song , ZHAO Ji-Lai , REN You-Lai , SHAN Bing , ZHAO Zheng , CUI Ming-Qi . SHAPE MEASUREMENT OF SYNCHROTRON RADIATION WITH HIGH TIME RESOLUTION. Chinese Physics C, 1990, 14(8): 677-683.
[19]	PEI Guo-Xi , XIE Jia-Lin , ZHOU Shu , SUN Song-Lan . OPTIMIZATION OF BEPC POSITRON SOURCE. Chinese Physics C, 1990, 14(2): 110-117.
[20]	XIE Jia-Lin . ON THE AVERAGE LUMINOSITY OF ELECTRON POSITRON COLLIDER AND POSITRON-PRODUING ENERGY. Chinese Physics C, 1985, 9(5): 577-585.

Access

Get Citation

Li Guangxiao and Fang Shouxian. Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider[J]. Chinese Physics C, 1995, 19(10): 952-958.

Li Guangxiao and Fang Shouxian. Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider[J]. Chinese Physics C, 1995, 19(10): 952-958. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2745)
PDF Downloads(523)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider

Corresponding author: Li Guangxiao,

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

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1995-10-05

Abstract: The design principle and main parameters of the permanent magnet Mini-βscheme for the Beijing Electron Positron Collider (BEPC) are described.In the design,the BEPC storage ring will have a Mini-β insertion and a conventional insertion in the southern and northern interaction regions respectively.The arc and injection regions are kept unchanged. The Mini-β insertion quadrupoles are designed to be permanent magnets.A vertical focusing electromagnet is positioned near each of the two gates of BES so that the dynamics perturbation due to the constant field strength of the permanent magnet in the energy ramping can be compensated. The designed βx*=1.2m, βy* = 0.036m,and the length and strength of the permanent magnets are 0.5m and 8T/m respectively.Compared with running mode now,the designed luminosity is incresed by a factor of about 3.

HTML

Reference (1)

Realizability of the Permanent Magnet Mini-β Scheme for the Beijing Electron Positron Collider

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article