Chinese Physics C > 2007, Vol. 31 > Issue(4): 391-394

Construction of the Phasing System for BEPCⅡ Linac

HOU Mi^,,
GENG Zhe-Qiao

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

Abstract
HTML
Reference
Related

PDF

Abstract：
In order to get high beam quality, a RF distribution system is required, with minimal phase drifts and errors in the BEPCⅡ linac. The additional installation of phase reference cables and monitoring equipments and stable RF distribution for BEPC linac are finished. The master oscillator is chosen to offer RF signal with low phase noise and a stable phase distribution system is built to deliver RF signal to each klystron. A phase and amplitude detector is constructed to measure the phase precisely and an IΦA unit is used for a phase shifter. Control software based on EPICS is used to connect all the units of the system, and a phasing method based on BPM is adopted to optimize the phase of each klystron. Now the phasing system is installed and tested in the klystron gallery of the BEPCⅡ linac.

References

[1]

. PEI Guo-Xi. Overview of BEPC/ Linac Design. In:Po-hang Accelerator Laboratory. Proceedings of LINAC 2002.Pohang: Pohang Accelerator Laboratory, 2002. 49-51.2. GU Peng-Da et al. HEP NP, 2005, 29(3): 316-320.(in Chinese)(顾鹏达等.高能物理与核物理,2005, 29(3): 316-320)3. Geng Zhe-Qiao et al. HEP NP, 2006, 30(2): 151-154.(in Chinese)(耿哲娇等.高能物理与核物理,2006, 30(2): 151-154)4. Neal R B et al. The Stanford Two-Mile Accelerator. W. A.Benjamin, Inc, New York Amsterdam, 1968. 383-409.

[1]	ZHAO Ji-Jui. Accelerator Control System and Its Progress. Chinese Physics C, 2008, 32(S1): 139-141.
[2]	HOU Mi,PEI Guo-Xi,. Modeling of the RF System for the Normal Conducting Linac. Chinese Physics C, 2008, 32(1): 56-59.doi:10.1088/1674-1137/32/1/013
[3]	WANG Shu-Hong,PEI Guo-Xi,CHI Yun-Long,CHEN Yan-Wei,CAO Jian-She,KONG Xiang-Cheng,ZHAO Feng-Li,HOM Mi,CHEN Zhi-Bi,LIU Wei-Bin,DENG Bing-Lin,GENG Zhe-Qiao,PEI Shi-Lun,SHEN Li,LE Qi,YE Qiang. BEPCⅡ Linac Beam Commissioning and Operation. Chinese Physics C, 2008, 32(S1): 215-217.
[4]	LIU Wei-Bin,WANG Shu-Hong,YE Qiang,WANG Lin. Emittance Measurement at BEPCⅡ Linac. Chinese Physics C, 2008, 32(S1): 86-88.
[5]	LI Ji-Hao,SUN Bao-Gen,HE Duo-Hui,LIU Gong-Fa,LU Ping,CAO Yong. Research and Measurement of BPM System at HLS LINAC. Chinese Physics C, 2007, 31(1): 96-100.
[6]	WEN Yong-Wu,WEN Xu,LIU Jian-Xin. Microwave System of Medical Standing Electron Linear Accelerator. Chinese Physics C, 2007, 31(7): 683-685.
[7]	WANG Shu-Hong,PEI Guo-Xi,LIU Wei-Bin,CHEN Yan-Wei,YE Qiang,GENG Zhe-Qiao. Studies on the Beam Orbit and Energy Instabilities at the BEPCⅡ Linac. Chinese Physics C, 2007, 31(11): 1067-1070.
[8]	CHEN Yan-Wei,WANG Shu-Hong,PEI Guo-Xi,LIU Wei-Bin,YE Qiang. Beam Commissioning of BEPCII Injector Linac. Chinese Physics C, 2006, 30(6): 562-565.
[9]	WANG Shu-Hong,PEI Guo-Xi,SUN Yao-Lin,CHI Yun-Long,CHEN Yan-Wei,CAO Jian-She,KONG Xiang-Cheng,ZHAO Feng-Li,HOU Mi,DENG Bing-Lin. BEPCⅡ Linac Upgrade and Beam Commissioning. Chinese Physics C, 2006, 30(S1): 150-152.
[10]	ZHAO Feng-Li,HOU Mi,ZHAO Yan-Ping,LIU Jin-Tong,ZHANG Jing-Ru,ZHOU Yao-Xiang,HAN Da-Wei. Microwave System for BEPCⅡ-Linac. Chinese Physics C, 2006, 30(2): 155-158.
[11]	GEN Zhe-Qiao,HOU Mi,PEI Guo-Xi. PAD Design for the Phasing System of BEPCⅡ Linac. Chinese Physics C, 2006, 30(2): 151-154.
[12]	ZHANG Jian-Bing,WANG Fang,WANG Guang-Wei. Experiment Research for I/Q Technology Applied in Accelerator Phase Detecting. Chinese Physics C, 2005, 29(3): 312-315.
[13]	GU Peng-Da,GEN Zhe-Qiao,CUI Yan-Yan,PEI Guo-Xi,WANG Shu-Hong. Design Studies of RF Phasing System for BEPCII Linac. Chinese Physics C, 2005, 29(3): 316-320.
[14]	LI Jia-Cai¹,WU Yuan-Ming¹,CUI Xiang-Zong¹,ZHANG Liang-Sheng¹,ZHOU Bao-Qing¹,LIU Zheng-Quan¹,ZHANG Shao-Ping¹,LIU Shi-Xing²,SUN Chang-Chun¹,SHEN Ji²,YIN Ze-Jie²,ZHANG Yong-Ming,,,,. A Test Beam Upgrade Based on the BEPC-LINAC. Chinese Physics C, 2004, 28(12): 1269-1277.
[15]	SHANG Lei,LUO Xue-Fang,WANG Wei,HONG Jun,LU Ye-Ming,ZHANG Yi,ZHAO Feng. Design and Upgrading of HLS Linac Modulators. Chinese Physics C, 2003, 27(12): 1133-1137.
[16]	GU Peng-Da,PEI Guo-Xi,WANG Shu-Hong. SLED System for Long Pulse Multi-bunch Linac. Chinese Physics C, 2001, 25(4): 348-353.
[17]	YU Qing-Chang. Study on Design of Proton Linacs. Chinese Physics C, 2001, 25(5): 429-436.
[18]	WANG Shu-Hong,ZHOU Qing-Yi,WAN Heng-Fang,ZHANG Hua-Shun,XIAO Lian-Rong,XUE Jing-Xuan,JIN Qing-Shou,ZHANG Cheng-Xian,LUO Zi-Hua,KE Xue-Yao,LIU Dian-Kui,HE Wei-Ning. The Performance Improvement and Its Application of Beijing Proton Linac. Chinese Physics C, 1991, 15(8): 680-688.
[19]	The Electron LINAC Department. THE 250MeV SECTION OF BEPC 1.1/1.4GeV e^±LINAC. Chinese Physics C, 1988, 12(3): 365-371.
[20]	WEI Kai-Yu,LIN Zhen-Hua,LÜ Ji-Hua,WANG Shu-Hong,LUO Zi-Hua,SUN Song-Lan,ZHU Ren-Quan. DESIGN AND BEAM TEST FOR THE BPL 35.5MeV BEAM TRANSPORT SYSTEM. Chinese Physics C, 1987, 11(4): 571-576.

Access

Get Citation

HOU Mi and GENG Zhe-Qiao. Construction of the Phasing System for BEPCⅡ Linac[J]. Chinese Physics C, 2007, 31(4): 391-394.

HOU Mi and GENG Zhe-Qiao. Construction of the Phasing System for BEPCⅡ Linac[J]. Chinese Physics C, 2007, 31(4): 391-394. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-07-26
Revised: 2006-08-18

Article Metric

Article Views(4224)
PDF Downloads(700)
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

Construction of the Phasing System for BEPCⅡ Linac

HOU Mi^,
GENG Zhe-Qiao

Corresponding author:HOU Mi,

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

Received Date:2006-07-26
Accepted Date:2006-08-18
Available Online:2007-04-05

Abstract:In order to get high beam quality, a RF distribution system is required, with minimal phase drifts and errors in the BEPCⅡ linac. The additional installation of phase reference cables and monitoring equipments and stable RF distribution for BEPC linac are finished. The master oscillator is chosen to offer RF signal with low phase noise and a stable phase distribution system is built to deliver RF signal to each klystron. A phase and amplitude detector is constructed to measure the phase precisely and an IΦA unit is used for a phase shifter. Control software based on EPICS is used to connect all the units of the system, and a phasing method based on BPM is adopted to optimize the phase of each klystron. Now the phasing system is installed and tested in the klystron gallery of the BEPCⅡ linac.