Chinese Physics C > 2017, Vol. 41 > Issue(1): 017002 DOI: 10.1088/1674-1137/41/1/017002

Compensation for booster leakage field in the Duke storage ring

1.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
2.
Triangle University Nuclear Laboratory/Physics Department, Duke University, Durham, 27705, USA
3.
Triangle University Nuclear Laboratory/Physics Department, Duke University, Durham, 27705, USA
4.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The High Intensity Gamma-ray Source (HIGS) at Duke University is an accelerator-driven Compton gamma-ray source, providing high flux gamma-ray beam from 1 MeV to 100 MeV for photo-nuclear physics research. The HIGS facility operates three accelerators, a linac pre-injector (0.16 GeV), a booster injector (0.16-1.2 GeV), and an electron storage ring (0.24-1.2 GeV). Because of the proximity of the booster injector to the storage ring, the magnetic field of the booster dipoles close to the ring can significantly alter the closed orbit in the storage ring being operated in the low energy region. This type of orbit distortion can be a problem for certain precision experiments which demand a high degree of energy consistency of the gamma-ray beam. This energy consistency can be achieved by maintaining consistent aiming of the gamma-ray beam, and therefore a steady electron beam orbit and angle at the Compton collision point. To overcome the booster leakage field problem, we have developed an orbit compensation scheme. This scheme is developed using two fast orbit correctors and implemented as a feedforward which is operated transparently together with the slow orbit feedback system. In this paper, we will describe the development of this leakage field compensation scheme, and report the measurement results, which demonstrate the effectiveness of the scheme.
- field compensation,
- feedforward,
- storage ring,
- beam orbit

References

[1]	S.F. Mikhailov et al, Commissioning of the Booster Injector Synchrotron for the HIGS Facility at Duke University, in Proceedings of the PAC07 (2007)
[2]	S.F. Mikhailov et al, Multi-bunch Injection Scheme for the Duke Booster Synchrotron for Top-off Injection, in Proceedings of the PAC09 (2009)
[3]	Y.K. Wu et al, Phys. Rev. Lett., 96:224801(2006)
[4]	V.N. Litvinenko and J.M.J. Madey, Nucl. Instrum. Methods in Phys. Res. Sect. A, 375:580-583(1996)
[5]	V.N. Litvinenko et al, Phys. Rev. Lett., 78:4569(1997)
[6]	W. Joho et al, Nucl. Instrum. Methods A, 562(1):1-11(2006)
[7]	H.J Tsai et al, Hardware Improvements and Beam Commissioning of the Booster Ring in Taiwan Photon Source, in Proceeding of IPAC2015 (Richmond, USA, 2015)
[8]	R. Keller et al, Orbit Stability of the ALS Storage Ring, in Proceeding of PAC1997 (1997), Vol. 1, p 784-786
[9]	M. Eriksson et al, J. Synchrotron Radiat., 21(5):837-842(2014)
[10]	Y.K. Wu, et al, Performance and Capabilities of Upgraded High Intensity Gamma-ray Source at Duke University, in Proceedings of the PAC09 (2009)
[11]	Y.K. Wu et al, BPM and Orbit Correction Systems at the Duke Storage Ring, in Proceedings of the PAC03 (2003), Vol. 4, p 2479-2481
[12]	M. Bge et al, Fast Closed Orbit Control in the SLS Storage Ring, in Proceedings of the PAC1999, Vol. 2, p 1129-1131
[13]	S.Y Lee, Accelerator Physics (World Scientific, 2004)

[1]	Nadir Khan,Zhong-Kui Huang,Wei-Qiang Wen,Sultan Mahmood,Li-Jun Dou,Shu-Xing Wang,Xin Xu,Han-Bing Wang,Chong-Yang Chen,Xiao-Ya Chuai,Xiao-Long Zhu,Dong-Mei Zhao,Li-Jun Mao,Jie Li,Da-Yu Yin,Jian-Cheng Yang,You-Jin Yuan,Lin-Fan Zhu,Xin-Wen Ma. Low energy range dielectronic recombination of Fluorine-like Fe¹⁷⁺at the CSRm. Chinese Physics C, 2018, 42(6): 064001.doi:10.1088/1674-1137/42/6/064001
[2]	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
[3]	Xiao-Ni Li,Wei-Qiang Wen,Heng Du,Peng Li,Xiao-Hu Zhang,Xue-Jing Hu,Guo-Feng Qu,Zhong-Shan Li,Wen-Wen Ge,Jie Li,Han-Bing Wang,Jia-Wen Xia,Jian-Cheng Yang,Xin-Wen Ma,You-Jin Yuan. Simulation of longitudinal dynamics of laser-cooled and RF-bunched C³⁺ion beams at heavy ion storage ring CSRe. Chinese Physics C, 2017, 41(7): 077003.doi:10.1088/1674-1137/41/7/077003
[4]	Wei Wang,Xiao-Ye He,Zheng Tang,Qiu-Yang Yao. Smoothing analysis of HLSII storage ring magnets. Chinese Physics C, 2016, 40(12): 127001.doi:10.1088/1674-1137/40/12/127001
[5]	Rui-Xuan Huang,Chad Mitchell,Qi-Ka Jia,Christos Papadopoulos,Fernando Sannibale. Simulation study on the emittance compensation of off-axis emitted beam in RF photoinjector. Chinese Physics C, 2016, 40(11): 117004.doi:10.1088/1674-1137/40/11/117004
[6]	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
[7]	Wei Li,Hao Hao,Stepan F. Mikhailov,Wei Xu,Jing-Yi Li,Wei-Min Li,Ying. K. Wu. Study of magnetic hysteresis effects in a storage ring using precision tune measurement. Chinese Physics C, 2016, 40(12): 127002.doi:10.1088/1674-1137/40/12/127002
[8]	Zheng Gao,Yuan He,Xian-Wu Wang,Wei Chang,Rui-Feng Zhang,Zheng-Long Zhu,Sheng-Hu Zhang,Qi Chen,Tom Powers. Study on transient beam loading compensation for China ADS proton linac injector Ⅱ. Chinese Physics C, 2016, 40(5): 057005.doi:10.1088/1674-1137/40/5/057005
[9]	BAI Zheng-He,WANG Lin,JIA Qi-Ka,LI Wei-Min. Lattice study for the HLS-Ⅱ storage ring. Chinese Physics C, 2013, 37(4): 047004.doi:10.1088/1674-1137/37/4/047004
[10]	BAI Zheng-He,WANG Lin,JIA Qi-Ka,LI Wei-Min. Lattice optimization for the HLS-Ⅱ storage ring. Chinese Physics C, 2013, 37(1): 017001.doi:10.1088/1674-1137/37/1/017001
[11]	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
[12]	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
[13]	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
[14]	ZHANG Man-Zhou,LI Hao-Hu,JIANG Bo-Cheng,LIU Gui-Min,LI De-Ming. Beam based alignment of the SSRF storage ring. Chinese Physics C, 2009, 33(4): 301-305.doi:10.1088/1674-1137/33/4/013
[15]	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
[16]	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
[17]	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
[18]	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
[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]	Rao Yinong,Xia Jiawen,Yuan Youjin,Wei Baowen. Simulation of Electron Cooling Process in a Storage Ring. Chinese Physics C, 1997, 21(S2): 73-84.

Access

Get Citation

Wei Li, Hao Hao, Stepan F. Mikhailov, Victor Popov, Wei-Min Li and Ying. K. Wu. Compensation for booster leakage field in the Duke storage ring[J]. Chinese Physics C, 2017, 41(1): 017002. doi: 10.1088/1674-1137/41/1/017002

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2016-05-23

Fund

Supported by National Natural Science Foundation of China (11175180, 11475167) and US DOE (DE-FG02-97ER41033)

Article Metric

Article Views(3405)
PDF Downloads(38)
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

Compensation for booster leakage field in the Duke storage ring

Corresponding author:Wei Li,

Corresponding author:Hao Hao,

1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

2. Triangle University Nuclear Laboratory/Physics Department, Duke University, Durham, 27705, USA

3. Triangle University Nuclear Laboratory/Physics Department, Duke University, Durham, 27705, USA

4. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Received Date:2016-05-23

Available Online:2017-01-05

Fund Project:Supported by National Natural Science Foundation of China (11175180, 11475167) and US DOE (DE-FG02-97ER41033)

Abstract:The High Intensity Gamma-ray Source (HIGS) at Duke University is an accelerator-driven Compton gamma-ray source, providing high flux gamma-ray beam from 1 MeV to 100 MeV for photo-nuclear physics research. The HIGS facility operates three accelerators, a linac pre-injector (0.16 GeV), a booster injector (0.16-1.2 GeV), and an electron storage ring (0.24-1.2 GeV). Because of the proximity of the booster injector to the storage ring, the magnetic field of the booster dipoles close to the ring can significantly alter the closed orbit in the storage ring being operated in the low energy region. This type of orbit distortion can be a problem for certain precision experiments which demand a high degree of energy consistency of the gamma-ray beam. This energy consistency can be achieved by maintaining consistent aiming of the gamma-ray beam, and therefore a steady electron beam orbit and angle at the Compton collision point. To overcome the booster leakage field problem, we have developed an orbit compensation scheme. This scheme is developed using two fast orbit correctors and implemented as a feedforward which is operated transparently together with the slow orbit feedback system. In this paper, we will describe the development of this leakage field compensation scheme, and report the measurement results, which demonstrate the effectiveness of the scheme.

HTML

Reference (13)

Compensation for booster leakage field in the Duke storage ring

Abstract：

References

Access

Article Metrics

Metrics

通讯作者:陈斌, bchen63@163.com

Email This Article