Beam based alignment of the SSRF storage ring

ZHANG Man-Zhou; LI Hao-Hu; JIANG Bo-Cheng; LIU Gui-Min; LI De-Ming

doi:10.1088/1674-1137/33/4/013

Chinese Physics C> 2009, Vol. 33> Issue(4) : 301-305 DOI: 10.1088/1674-1137/33/4/013

Beam based alignment of the SSRF storage ring

Abstract
HTML
Reference
Related

PDF

Abstract：
There are 140 beam position monitors (BPMs) in the Shanghai Synchrotron Radiation Facility (SSRF) storage ring used for measuring the closed orbit. As the BPM pickup electrodes are assembled directly on the vacuum chamber, it is important to calibrate the electrical center offset of the BPM to an adjacent quadrupole magnetic center. A beam based alignment (BBA) method which varies individual quadrupole magnet strength and observes its effects on the orbit is used to measure the BPM offsets in both the horizontal and vertical planes. It is a completely automated technique with various data processing methods. There are several parameters such as the strength change of the correctors and the quadrupoles which should be chosen carefully in real measurement. After several rounds of BBA measurement and closed orbit correction, these offsets are set to an accuracy better than 10 μm. In this paper we present the method of beam based calibration of BPMs, the experimental results of the SSRF storage ring, and the error analysis.

References

[1]

. ZHAO Z T, XU H J. SSRF, A 3.5 GeV Synchrotron Light Source for China. In European Particle Accelerator Con-ference, Proceeding of EPAC 2004. Lucerne Switzerland:2004, 23682. Roejsel P. Nucl. Instrum. Methods A, 1994, 343: 3743. Terebilo A. Accelerator Toolbox for MATLAB, SLAC-PUB-8732, 2001, 10-35. ww-ssrl.slac.stanford.edu/at/slac-pub-8732.pdf4. Portmann J, Je Corbett, Andrei Terebilo. Middle Layer Software For Accelerator Comtrol, 2004, 10. www-ssrl.slac.stanford.edu/spear3/commissioning/middlelayersoftware.doc5. Portmann G, Robin D. Automated Beam Based Alignment of the ALS Quadrupoles. In Particle Accelerator Confer-ence, Proceedings of the 1995. Dallas, USA: 1995, 4: 26936. Tenenbaum P, Raubenheimer T O. Physical Review Special Topics - Accelerators and Beams, 2000, 3: 052801

[1]	Wei-Wei Gao , He-Ting Li , Lin Wang . Preliminary study of EEHG-based superradiant undulator radiation at the HLS-II storage ring. Chinese Physics C, 2017, 41(7): 078101. doi: 10.1088/1674-1137/41/7/078101
[2]	Qing-Lei Zhang , Shun-Qiang Tian , Bo-Cheng Jiang , Jie-Ping Xu , Zhen-Tang Zhao . Beam dynamics of the superconducting wiggler on the SSRF storage ring. Chinese Physics C, 2016, 40(3): 037001. doi: 10.1088/1674-1137/40/3/037001
[3]	YANG Yong , LENG Yong-Bin , YAN Ying-Bing , CHEN Zhi-Chu . Injection performance evaluation for SSRF storage ring. Chinese Physics C, 2015, 39(9): 097003. doi: 10.1088/1674-1137/39/9/097003
[4]	XU Wei , LI Jing-Yi , HE Duo-Hui . A betatron tune measurement system based on bunch-by-bunch transverse feedback at the Duke storage ring. Chinese Physics C, 2013, 37(7): 077006. doi: 10.1088/1674-1137/37/7/077006
[5]	XU Gang , JIAO Yi , TIAN Sai-Ke . Realization of a locally-round beam in an ultimate storage ring using solenoids. Chinese Physics C, 2013, 37(6): 067002. doi: 10.1088/1674-1137/37/6/067002
[6]	LENG Yong-Bin , HUANG Guo-Qing , ZHANG Man-Zhou , CHEN Zhi-Chu , CHEN Jie , YE Kai-Rong . The beam-based calibration of an X-ray pinhole camera at SSRF. Chinese Physics C, 2012, 36(1): 80-83. doi: 10.1088/1674-1137/36/1/014
[7]	MA Zhen-Yu , MA Guang-Ming , YU Hai-Bo , MAO Dong-Qing , FENG Zi-Qiang , HOU Hong-Tao , LIU Jian-Fei . Investigation on the fabrication of the 3rd harmonic superconducting cavity for the SSRF storage ring. Chinese Physics C, 2009, 33(9): 792-797. doi: 10.1088/1674-1137/33/9/017
[8]	TIAN Shun-Qiang , LIU Gui-Min , LI Hao-Hu , HOU Jie , CHEN Guang-Ling , WAN Cheng-Lan . Nonlinear optimization of the modern synchrotron radiation storage ring based on frequency map analysis. Chinese Physics C, 2009, 33(2): 127-134. doi: 10.1088/1674-1137/33/2/011
[9]	TIAN Shun-Qiang , LIU Gui-Min , LI Hao-Hu , HOU Jie , ZHANG Wen-Zhi . Tune optimization of the third generation light source storage ring based onFrequency Map Analysis. Chinese Physics C, 2009, 33(3): 224-231. doi: 10.1088/1674-1137/33/3/012
[10]	ZHANG Wen-Zhi , TIAN Shun-Qiang , ZHANG Man-Zhou , HOU Jie , LI Hao-Hu , LIU Gui-Min , ZHAO Zhen-Tang . Design and first commissioning of a new mode with lower emittance in the SSRF storage ring. Chinese Physics C, 2009, 33(5): 397-400. doi: 10.1088/1674-1137/33/5/016
[11]	TIAN Shun-Qiang , ZHANG Wen-Zhi , LI Hao-Hu , ZHANG Man-Zhou , HOU Jie , ZHOU Xue-Mei , LIU Gui-Min . Linear optics calibration and nonlinear optimization during the commissioning of the SSRF storage ring. Chinese Physics C, 2009, 33(S2): 83-85. doi: 10.1088/1674-1137/33/S2/021
[12]	CHEN Jian-Hui , ZHANG Man-Zhou , ZHAO Zhen-Tang . Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring. Chinese Physics C, 2009, 33(9): 785-788. doi: 10.1088/1674-1137/33/9/015
[13]	CHEN Jian-Hui , ZHAO Zhen-Tang . Preliminary application of turn-by-turn data analysis to the SSRF storage ring. Chinese Physics C, 2009, 33(7): 590-593. doi: 10.1088/1674-1137/33/7/016
[14]	HOU Jie , TIAN Shun-Qiang , ZHANG Man-Zhou , XU Yi , LIU Gui-Min . Studies of closed orbit correction and slow orbit feedback for the SSRF storage ring. Chinese Physics C, 2009, 33(2): 145-150. doi: 10.1088/1674-1137/33/2/013
[15]	ZHOU Xue-Mei . Measurement of optics for the SSRF storage ring in commissioning. Chinese Physics C, 2009, 33(S2): 78-82. doi: 10.1088/1674-1137/33/S2/020
[16]	JIANG Bo-Cheng , CHEN Guang-Ling , CHEN Jian-Hui , LIU Gui-Min , ZHAO Zhen-Tang . Observation of beam instability in the SSRF storage ring. Chinese Physics C, 2009, 33(S2): 75-77. doi: 10.1088/1674-1137/33/S2/019
[17]	CHEN Jian-Hui , ZHAO Zhen-Tang , DAI Zhi-Min , LIU Gui-Min . Study of closed orbit response to magnet vibrations at the SSRF storage ring. Chinese Physics C, 2008, 32(7): 589-592. doi: 10.1088/1674-1137/32/7/016
[18]	TIAN Shun-Qiang , HOU Jie , CHEN Guang-Ling , LIU Gui-Min . Analysis of sextupole effects on β function beating in the SSRF storage ring. Chinese Physics C, 2008, 32(7): 576-579. doi: 10.1088/1674-1137/32/7/013
[19]	TIAN Shun-Qiang , HOU Jie , CHEN Guang-Ling , LIU Gui-Min . New chromaticity compensation approach and dynamic aperture increase in the SSRF storage ring. Chinese Physics C, 2008, 32(8): 661-664. doi: 10.1088/1674-1137/32/8/015
[20]	MA Guang-Ming , ZHAO Zhen-Tang , LIU Jian-Fei . Design of a higher harmonic cavity for the SSRF storage ring. Chinese Physics C, 2008, 32(4): 275-279. doi: 10.1088/1674-1137/32/4/007

Access

Get Citation

ZHANG Man-Zhou, LI Hao-Hu, JIANG Bo-Cheng, LIU Gui-Min and LI De-Ming. Beam based alignment of the SSRF storage ring[J]. Chinese Physics C, 2009, 33(4): 301-305. doi: 10.1088/1674-1137/33/4/013

ZHANG Man-Zhou, LI Hao-Hu, JIANG Bo-Cheng, LIU Gui-Min and LI De-Ming. Beam based alignment of the SSRF storage ring[J]. Chinese Physics C, 2009, 33(4): 301-305. doi: 10.1088/1674-1137/33/4/013 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2008-05-15
Revised: 2008-06-24

Article Metric

Article Views(2818)
PDF Downloads(783)
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

Beam based alignment of the SSRF storage ring

Corresponding author: ZHANG Man-Zhou,

Received Date: 2008-05-15

Accepted Date: 2008-06-24

Available Online: 2009-04-05

Abstract:

There are 140 beam position monitors (BPMs) in the Shanghai Synchrotron Radiation Facility (SSRF) storage ring used for measuring the closed orbit. As the BPM pickup electrodes are assembled directly on the vacuum chamber, it is important to calibrate the electrical center offset of the BPM to an adjacent quadrupole magnetic center. A beam based alignment (BBA) method which varies individual quadrupole magnet strength and observes its effects on the orbit is used to measure the BPM offsets in both the horizontal and vertical planes. It is a completely automated technique with various data processing methods. There are several parameters such as the strength change of the correctors and the quadrupoles which should be chosen carefully in real measurement. After several rounds of BBA measurement and closed orbit correction, these offsets are set to an accuracy better than 10 μm. In this paper we present the method of beam based calibration of BPMs, the experimental results of the SSRF storage ring, and the error analysis.

HTML

Reference (1)

Beam based alignment of the SSRF storage ring

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article