Analysis and experimental concepts of the vibrating wire alignment technique

WANG Xiao-Long; DONG Lan; WU Lei; LI Chun-Hua

doi:10.1088/1674-1137/38/11/117010

Chinese Physics C> 2014, Vol. 38> Issue(11) : 117010 DOI: 10.1088/1674-1137/38/11/117010

Analysis and experimental concepts of the vibrating wire alignment technique

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Abstract：
The vibrating wire alignment technique is a method which, by measuring the spatial distribution of a magnetic field, can achieve very high alignment accuracy. The vibrating wire alignment technique can be applied to fiducializing magnets and the alignment of accelerator straight section components, and it is a necessary supplement to conventional alignment methods. This article gives a systematic summary of the vibrating wire alignment technique, including vibrating wire model analysis, system frequency calculation, wire sag calculation, and the relation between wire amplitude and magnetic induction intensity. On the basis of this analysis, this article outlines two existing alignment methods, one based on magnetic field measurement and the other on amplitude and phase measurements. Finally, some basic experimental issues are discussed.

References

[1]

Fortgang C M. Pulsed Taut-Wire Alignment of Multiple Permanent Magnet Quadrupoles. LINAC Conf., Albuquerque NM, September 1990[2] Temnykh Alexander. Nuclear Instrument and Methods in Physics Research A, 1997, 399: 185-194[3] Jain Animesh. Results from Vibrating Wire RD for Alignment of Multipoles in NSLS-Ⅱ. 16th International Magnetic Measurement Workshop. 2009[4] Jain A, Anerella M, Ganetis G et al. Vibrating Wire RD for Alignment of Multipole Magnets in NSLS-Ⅱ. The 10th International Workshop on Accelerator Alignment. 2008[5] Temnykh Alexander. The Use of Vibrating Wire Technique for Precise Positioning of CESR Phase Ⅲ Super-Conducting Quadrupoles at Room Temperature. Proceeding of the 2001 Particle Accelerator Conference. Chicago, 2001. 3469-3471[6] Kittel C, Knight W D, Ruderman M A et al. Berkeley Physics Course. Beijing: Science Press, 1979[7] Temnykh Alexander. The Magnetic Center Finding Using Vibrating Wire Technique. 11th International Magnetic Measurement Workshop. 1999[8] Wolf Zachary. A Vibrating Wire System for Quadrupole Fiducialization, SLAC-TN-10-087. 2010

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WANG Xiao-Long, DONG Lan, WU Lei and LI Chun-Hua. Analysis and experimental concepts of the vibrating wire alignment technique[J]. Chinese Physics C, 2014, 38(11): 117010. doi: 10.1088/1674-1137/38/11/117010

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Received: 2013-09-26
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Analysis and experimental concepts of the vibrating wire alignment technique

Received Date: 2013-09-26
Accepted Date: 1900-01-01
Available Online: 2014-11-05

Abstract: The vibrating wire alignment technique is a method which, by measuring the spatial distribution of a magnetic field, can achieve very high alignment accuracy. The vibrating wire alignment technique can be applied to fiducializing magnets and the alignment of accelerator straight section components, and it is a necessary supplement to conventional alignment methods. This article gives a systematic summary of the vibrating wire alignment technique, including vibrating wire model analysis, system frequency calculation, wire sag calculation, and the relation between wire amplitude and magnetic induction intensity. On the basis of this analysis, this article outlines two existing alignment methods, one based on magnetic field measurement and the other on amplitude and phase measurements. Finally, some basic experimental issues are discussed.