Skip to main content
SpringerLink
Log in

Research on magnetic center measurement of quadrupole and sextupole using vibrating wire alignment technique in HEPS-TF

  • Original Paper
  • Published:
Radiation Detection Technology and Methods Aims and scope Submit manuscript

Abstract

Purpose

In order to meet the extremely low emittance requirement, the magnets in the storage ring of high-energy photon source (HEPS) need to have a stable support and precise positioning. In HEPS-TF, the key and difficult technologies of HEPS should be researched and developed. Vibrating wire alignment technique is one important project of HEPS-TF. It can be used to pre-align the quadrupoles and sextupoles on one girder with high precision. A vibrating wire measurement system was set up and tested to verify the magnetic center measurement precision and the magnet adjustment error.

Methods

There are one sextupole and one quadrupole installed on a multipole girder. Vibrating wire is stretched through mechanical center of the magnet apertures and supported by the test benches on the two sides. A single conducting wire is stretched through the magnet aperture and electrified by alternating current. The wire will vibrate for a period of Lorentz force. By matching the current frequency to one mode of natural frequency of the wire, the vibrating amplitude will be enhanced. And by measuring the vibrating amplitude, the magnetic field at the wire position can be got. Moving the wire across the magnet aperture in the transversal or vertical direction, the distribution of magnetic field and magnetic center position can be measured. According to the magnetic center position error to adjust the magnet. Measure the magnetic center of all magnets installed on the multipole girder one by one, and adjust their magnetic center to a line.

Results

The magnetic center measurement precision is better than ±3 μm, and the magnet adjustment error is less than 6 μm.

Conclusion

The vibrating wire system design and a series of magnetic center measurement experiments have gained good achievements. It has been proved the vibrating wire system is designed reasonable and using the vibrating wire to align the magnets installed on a multipole girder is feasible and can reach a high precision.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17
Fig. 18
Fig. 19

Similar content being viewed by others

References

  1. X.M. Jiang, J.Q. Wang, Q. Qin et al., The Chinese High-Energy Photon Source and its R&D project. Synchrotron Radiat. News 27(6), 27–31 (2014). https://doi.org/10.1080/08940886.2014.970938

    Article  Google Scholar 

  2. A. Temnykh, Vibrating wire field-measuring technique. Nucl. Instrum. Methods Phys. Res. A 399, 185–194 (1997). https://doi.org/10.1016/S0168-9002(97)00972-8

    Article  ADS  Google Scholar 

  3. Temnykh A, The magnetic center finding using vibrating wire technique, in 11th International Magnetic Measurement Workshop, 1999

  4. X.L. Wang, L. Dong, L. Wu et al., Analysis and experimental concepts of the vibrating wire alignment technique. Chin. Phys. C 38(11), 117010 (2014). https://doi.org/10.1088/1674-1137/38/11/117010

    Article  Google Scholar 

  5. L. Wu, X.L. Wang, C.H. Li et al., Theory and research overview of vibrating wire technique. High Power Laser Part. Beams 25(10), 2480–2486 (2013). https://doi.org/10.3788/HPLPB20132510.2479

    Article  Google Scholar 

  6. L. Wu, X.L. Wang, C.H. Li et al., Design of vibrating wire alignment system for HEPS-TF. High Power Laser Part. Beams 27(9), 095102 (2014). https://doi.org/10.11884/hplpb201527.095102

    Article  Google Scholar 

  7. A. Jain, Precision alignment of multipoles on a girder for NSLS-II, in 17th International Magnetic Measurement Workshop, Barcelona, 2011

  8. A. Jain, Vibrating wire R&D for magnet alignment, in NSLS-II Magnet Workshop, 2012

  9. A. Jain, Results from vibrating wire R&D for alignment of multipoles in NSLS-II, in 16th International Magnetic Measurement Workshop, Zurich, 2009

Download references

Acknowledgements

This work was supported by High Energy Photon Source Test Facility (HEPS-TF). We sincerely thank the help of Professor Jain Animesh from Brookhaven National Laboratory.

Author information

Authors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China

    Lei Wu, Xiao-long Wang, Chun-hua Li, Hua-min Qu, Zi-hao Wang, Min-xian Li & Ling-ling Gong

  2. Dongguan Institute of Neutron Sciences, Dongguan, 523808, China

    Xiao-long Wang & Hua-min Qu

  3. University of Chinese Academy of Sciences, Beijing, 100049, China

    Xiao-long Wang, Chun-hua Li & Zi-hao Wang

Authors
  1. Lei Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xiao-long Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Chun-hua Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Hua-min Qu
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Zi-hao Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Min-xian Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Ling-ling Gong
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Lei Wu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wu, L., Wang, Xl., Li, Ch. et al. Research on magnetic center measurement of quadrupole and sextupole using vibrating wire alignment technique in HEPS-TF. Radiat Detect Technol Methods 2, 50 (2018). https://doi.org/10.1007/s41605-018-0079-6

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s41605-018-0079-6

Keywords

PACS

Search

Navigation