Skip to main content
SpringerLink
Log in

Accurate calculation of field quality in conventional straight dipole magnets

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

Abstract

Purpose

In the standard design method of straight dipole magnets, the good field region is symmetric to the magnet mechanical center both in 2D and in 3D, so the obtained field quality is not the actual one because the field integration lines are not consistent with the curved beam paths. In this paper, an improved method for straight dipole magnets aiming at obtaining accurate field quality is proposed.

Methods

The field quality is calculated by taking into account the relationship of the good field region to the magnet straight geometry. General description of the improved method is introduced, and two application examples of straight dipole magnets are presented to investigate the detailed field quality difference between the improved and traditional methods. The result of the improved method is also compared with the field quality calculated along particle trajectory in OPERA-3D.

Results

It is shown that the difference in field quality between the improved and traditional methods cannot be neglected, and the field quality in the improved method is very close to the one calculated along real beam paths.

Conclusion

The field quality in the improved method is accurate enough for practical application in a straight dipole magnet.

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

Similar content being viewed by others

References

  1. J. Tanabe, Iron Dominated Electromagnets: Design, Fabrication, Assembly and Measurements (World Scientific, Singapore, 2005), pp. 16–274

    Book  Google Scholar 

  2. T. Zickler, in Basic design and engineering of normal-conducting, iron-dominated electromagnets, ed. by D. Brandt Proceedings of the CAS–CERN Accelerator School: Magnets, Bruges, Belgium, CERN-2010-004 (2009), p. 65

  3. S. Russenschuck, Field Computation for Accelerator Magnets: Analytical and Numerical Methods for Electromagnetic Design and Optimization (Wiley, Weinheim, 2010), pp. 269–388

    Book  MATH  Google Scholar 

  4. E. Huttel, J. Tanabe, A. Jackson et al., The storage ring magnets of the Australian Synchrotron, in Proceedings of EPAC 2004, Lucerne, Switzerland (2004), pp. 1666–1668

  5. J. Corbett, D. Dell’Orco, Y. Nosochkov et al., Multipole spilldown in the SPEAR 3 dipole magnets, in Proceedings of the 1999 Particle Accelerator Conference (New York, 1999), pp. 2355–2357

  6. J. Ohnishi, M. Kawakami, K. Fujii et al., Results of magnetic field measurements of Spring-8 magnets. IEEE Trans. Magn. 32, 3069 (1996)

    Article  ADS  Google Scholar 

  7. T. Becker, D. Kramer, S. Kuchler et al., Prototype development of the BESSY II Storage Ring magnetic elements, in Proceedings of the 1995 Particle Accelerator Conference (Dallas, 1995), pp. 1325–1327

  8. R. Keller, Final analysis of the ALS lattice magnet data, in Proceedings of the 1993 Particle Accelerator Conference (Washington, 1993), pp. 2811–2813

  9. W. Chen, C.T. Shi, B.G. Yin et al., End chamfer study and field measurements of the BEPCII dipoles, in Proceedings of 2005 Particle Accelerator Conference (Knoxville, Tennessee, 2005), pp. 919–921

  10. Q. Zhou, Z. Cao, Y. Sun et al., The magnet design of the SSRF storage ring and booster. IEEE Trans. Appl. Supercond. 10, 256 (2000)

    Article  ADS  Google Scholar 

  11. V.S. Kashikhin, M. Borland, G. Chlachidze et al., Longitudinal gradient dipole nagnet prototype for APS at ANL. IEEE Trans. Appl. Supercond. 26, 4002505 (2016)

    Google Scholar 

  12. F. Saeidi, R. Pourimani, J. Rahighi et al., Normal conducting superbend in an ultralow emittance storage ring. Phys. Rev. ST Accel. Beams 18, 082401 (2015)

    Article  ADS  Google Scholar 

  13. F. Saeidi, M. Razazian, J. Rahighi et al., Magnet design for an ultralow emittance storage ring. Phys. Rev. Accel. Beams 19, 032401 (2016)

    Article  ADS  Google Scholar 

  14. S. Wang, Y. An, S. Fang et al., An overview of design for CSNS/RCS and beam transport. Sci. China Phys. Mech. Astron. 54, s239 (2011)

  15. Y.-S. Zhu, M. Yang, Z. Zhang et al., Design and end chamfer simulation of PEFP beam line curved dipole magnets. Chin. Phys. C 35, 684 (2011)

  16. C. Zhang, L. Ma, Design and Development of Accelerator for Beijing Electron Positron Collider Upgrade Project (Shanghai Science and Technology Press, Shanghai, 2015), p. 296. (in Chinese)

Download references

Author information

Authors and Affiliations

  1. Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China

    Yingshun Zhu, Fusan Chen, Wen Kang, Wan Chen & Mei Yang

  2. University of Chinese Academy of Science, Beijing, 100049, China

    Fusan Chen

  3. Dongguan Campus, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan, 523803, China

    Wen Kang, Mei Yang & Xi Wu

Authors
  1. Yingshun Zhu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Fusan Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Wen Kang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Wan Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Mei Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Xi Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yingshun Zhu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhu, Y., Chen, F., Kang, W. et al. Accurate calculation of field quality in conventional straight dipole magnets. Radiat Detect Technol Methods 2, 14 (2018). https://doi.org/10.1007/s41605-018-0046-2

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s41605-018-0046-2

Keywords

Search

Navigation