BEPCⅡ Positron Source

PEI Guo-Xi; SUN Yao-Lin; LIU Jin-Tong; CHI Yun-Long; LIU Yu-Cheng; LIU Nian-Zong

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2006, Vol. 30> Issue(1) : 66-70

BEPCⅡ Positron Source

Institute of High Energy Physics,CAS,Beijing 100049,China

Abstract
HTML
Reference
Related

PDF

Abstract：
BEPCⅡ— an upgrade project of the Beijing Electron Positron Collider (BEPC) is a factory type of e^＋e^－ collider. The fundamental requirements for its injector linac are the beam energy of 1.89GeV for on-energy injection and a 40mA positron beam current at the linac end with a low beam emittance of 1.6μm and a low energy spread of ±0.5% so as to guarantee a higher injection rate (≥50mA/min) to the storage ring. Since the positron flux is proportional to the primary electron beam power on the target, we will increase the electron gun current from 4A to 10A by using a new electron gun system and increase the primary electron energy from 120MeV to 240MeV. The positron source itself is an extremely important system for producing more positrons, including a positron converter target chamber, a 12kA flux modulator, the 7m focusing module with DC power supplies and the support. The new positron production linac from the electron gun to the positron source has been installed into the tunnel. In what follows, we will emphasize the positron source design, manufacture and tests.

References

[1]

. PEI G X et al. Design Report of the BEPC/ InjectorLinac: IHEP-BEPCII-SB-03-02. November 20032. GOU W P, PEI G X. HEP NP, 2002, 26(3): 279-285(in Chinese)(苟卫平,裴国玺.高能物理与核物理,2002, 26(3): 279-285)3. Kulikov A V et al. SLC Positron Source Pulsed Flux Con-centrator. Proceedings of 1991 IEEE Particle Accelerator Conference. San Francisco, 1991. 20054. LIU J T et al. HEP NP, 2005, 29(4): 404(in Chinese)(刘晋通等.高能物理与核物理,2005, 29(4): 404)5. Lamare J de, et al. SLC Positron Source Flux Concentrator Modulator. Proceedings of 1991 IEEE Particle Accelerator Conference. San Francisco, 1991. 31386. Nam S H et al. Injection Kicker Modulator in 2GeV PohangLight Source.Proceedings of 1998 Twenty Third Interna-tional Power Modulator Symposium

[1]	LIU Bo , GU Meng-Ping , WANG Shu-Hong , CHI Yun-Long , YANG Xing-Wang , TIAN Shuang-Min , LIU Wei-Bin , YE Qiang . Experiment and Operation of BEPCⅡ Electron Gun System. Chinese Physics C, 2006, 30(5): 466-469.
[2]	PAN Wei-Min , ZHAO Guang-Yuan , WANG Hao , WANG Guang-Wei . Technical requirements and design of BEPCⅡ RF power source. Chinese Physics C, 2006, 30(3): 246-250.
[3]	WANG Shu-Hong , JIN Kai , ZHOU Feng . TESLA TW Positron Injector Linac and Beam Modeling. Chinese Physics C, 2005, 29(5): 495-500.
[4]	LIU Bo , GU Meng-Ping , CHi-Yun-Long , YANG Xing-Wang , TIAN Shuang-Min . Study on BEPC Experimental Electron Gun System. Chinese Physics C, 2005, 29(5): 507-511.
[5]	LIU Jin-Tong , GEN Zhe-Qiao , SUN Xian-Jing , SUN Yao-Lin , PEI Guo-Xi . Development of the BEPCⅡ Positron Source Flux Concentrator. Chinese Physics C, 2005, 29(4): 404-407.
[6]	LIU Yu-Dong , GUO Zhi-Yuan , WANG Jiu-Qing . Simulation of the Electron Cloud Density in BEPCⅡ. Chinese Physics C, 2004, 28(3): 222-226.
[7]	KONG Wei , XI Chuan-Ying , YE Bang-Jiao , WENG Hui-Min , ZHOU Xian-Yi , HAN Rong-Dian . Two-Detector Doppler Broadening of Annihilation Radiation in Metals. Chinese Physics C, 2004, 28(11): 1234-1237.
[8]	LIN Xiao-Yan , LIU Lian-Shou . Scale for the Production of Jets in High Energy e⁺e^－ Collisions. Chinese Physics C, 2003, 27(1): 7-11.
[9]	WANG Shu-Hong , WANG Jiu-Qing , YE Qiang , LE Qi . Minimization of Primary Electron Beam Radius at the Positron Production Target. Chinese Physics C, 2002, 26(12): 1302-1308.
[10]	GOU Wei-Ping , PEI Guo-Xi . Design of BEPCⅡ Positron Source. Chinese Physics C, 2002, 26(3): 279-285.
[11]	YU Run-Sheng , WANG Bao-Yi , MA Chuang-Xin , CAO Xing-Zhong , PEI Guo-Xi , WEI Long , YE Ming-Han . Computer Simulation for the Real-Sized Electron-Positron Converter on BEPC-LINAC Based Slow Positron Beam. Chinese Physics C, 2001, 25(S1): 135-139.
[12]	Huang Maorong , Wang Yunyu , Yang Juhua , He Yongshu , Guo Yinghuan , Sun Tonghan . Study on InP Doped With Sulphur and Under DifferentTemperatures by Positron Annihilation. Chinese Physics C, 1996, 20(12): 1097-1102.
[13]	He Yuanjin , Xin Mingrui , Zhang Tianbao . Measurement of Characteristic Positron Annihilation Lifetime in HgCdTe. Chinese Physics C, 1994, 18(8): 752-756.
[14]	GUO Xue-Zhe , WENG Hui-Min , HAN Rong-Dian . The Observation of Positron Surface State of Germanium. Chinese Physics C, 1992, 16(11): 961-964.
[15]	WU Ji-Min . Electron,Positron Distribution Function. Chinese Physics C, 1992, 16(6): 518-526.
[16]	XIONG Liang-Yue , LONG Qi-Wei . POSITRON DISLOCATION TRAPPING MODEL INCLUDING THE EFFECTS OF DETRAPPING OF POSITRON FROM DISLOCATIONS. Chinese Physics C, 1990, 14(9): 769-776.
[17]	PEI Guo-Xi , XIE Jia-Lin , ZHOU Shu , SUN Song-Lan . OPTIMIZATION OF BEPC POSITRON SOURCE. Chinese Physics C, 1990, 14(2): 110-117.
[18]	SHEN Ji-Qiang , LONG Qi-Wei , ZHOU Jin , WANG Ke-Lin . ATOMIC DENSITY DISTRIBUTIONS OF GRAIN BOUNDARIES IN METALS AND CHARACTERISTICS OF POSITRON ANNIHILATION LIFETIME SPECTRA. Chinese Physics C, 1989, 13(10): 879-885.
[19]	XIONG Liang-Yue . A PHENOMENOLOGICAL MODEL FOR POSITRON TRAPPING AT DISLOCATIONS. Chinese Physics C, 1988, 12(4): 433-439.
[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

PEI Guo-Xi, SUN Yao-Lin, LIU Jin-Tong, CHI Yun-Long, LIU Yu-Cheng and LIU Nian-Zong. BEPCⅡ Positron Source[J]. Chinese Physics C, 2006, 30(1): 66-70.

PEI Guo-Xi, SUN Yao-Lin, LIU Jin-Tong, CHI Yun-Long, LIU Yu-Cheng and LIU Nian-Zong. BEPCⅡ Positron Source[J]. Chinese Physics C, 2006, 30(1): 66-70. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-05-13
Revised: 1900-01-01

Article Metric

Article Views(1653)
PDF Downloads(715)
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, [email protected]

1.
沈阳化工大学材料科学与工程学院沈阳 110142

BEPCⅡ Positron Source

Corresponding author: PEI Guo-Xi,

Institute of High Energy Physics,CAS,Beijing 100049,China

Received Date: 2005-05-13
Accepted Date: 1900-01-01
Available Online: 2006-01-05

Abstract: BEPCⅡ— an upgrade project of the Beijing Electron Positron Collider (BEPC) is a factory type of e^＋e^－ collider. The fundamental requirements for its injector linac are the beam energy of 1.89GeV for on-energy injection and a 40mA positron beam current at the linac end with a low beam emittance of 1.6μm and a low energy spread of ±0.5% so as to guarantee a higher injection rate (≥50mA/min) to the storage ring. Since the positron flux is proportional to the primary electron beam power on the target, we will increase the electron gun current from 4A to 10A by using a new electron gun system and increase the primary electron energy from 120MeV to 240MeV. The positron source itself is an extremely important system for producing more positrons, including a positron converter target chamber, a 12kA flux modulator, the 7m focusing module with DC power supplies and the support. The new positron production linac from the electron gun to the positron source has been installed into the tunnel. In what follows, we will emphasize the positron source design, manufacture and tests.