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Journal of the Korean Physical Society

, Volume 76, Issue 1, pp 73–78 | Cite as

Measurement of RF characteristics for Superconducting Quarter-wave Resonator

  • Jongchul Lee
  • Yacine Kadi
  • Pei Zhang
  • Mitra Ghergherehchi
  • Jong-Seo ChaiEmail author
Article
  • 4 Downloads

Abstract

RF characteristics of unloaded quality factor (Q0) and accelerating electric field (Eacc) were measured for superconducting quarter-wave resonator (QWR) in order to verify the performance. For the accurate measurement of RF characteristics, the measurement method of Q0 based RF power and RF coupling coefficient was used, and the measurement uncertainty was calculated with statistics analysis of systematic error in RF measurement system. The superconducting QWR was designed with a resonant frequency of 101.28 MHz and an accelerating electric field (Eacc) of 6 MV/m at a cavity dissipation power of 10 W in the high-intensity and energy isotope separator online device (HIE-ISOLDE) project at CERN. Q-slopes and RF coupling coefficients were measured for three QWRs at the resonant frequency 101.28 MHz. Q0 values of QWRs were measured 4.55 × 108, 3.78 × 108 and 3.17 × 108 at the 6 MV/m, respectively, and the measurement uncertainty of Q0 and Eacc were calculated 2.92% and 3.32%. Performances of superconducting QWRs were acceptable to operate the beam acceleration with consideration of cryomodule capacity in HIEISOLDE project.

Keywords

RF measurement Quarter-wave resonator Superconducting Quality factor 

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Notes

Acknowledgments

This work was supported by the Radiation Technology R&D program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (2017M2A2A4A02020347).

References

  1. [1]
    K. W. Shepard, Nucl. Instrum. Meth. A 382, 125 (1996).ADSCrossRefGoogle Scholar
  2. [2]
    V. Palmieri, et al., Nucl. Instrum. Meth. A 382, 112 (1996).ADSCrossRefGoogle Scholar
  3. [3]
    R. E. Laxdal, et al., Physica C: Superconductivity 441, 193 (2006).ADSCrossRefGoogle Scholar
  4. [4]
    M. A. Fraser et al., in Proceedings of SRF2009 (Berlin, Germany, 2009).Google Scholar
  5. [5]
    H-J. Kim et al., Nucl. Instrum. Meth. A 884, 45 (2018).ADSCrossRefGoogle Scholar
  6. [6]
    H. Padamsee, RF Superconductivity for Accelerators (Wiley-VCH2008, 2008).Google Scholar
  7. [7]
    J. P. Holzbauer et al., Nucl. Instrum. Meth. A 913, 7 (2019).ADSCrossRefGoogle Scholar
  8. [8]
    T. Powers, in Proceedings of 12th International Workshop on RF Superconductivity, SRF2005 (New York, USA 40–70, 2005).Google Scholar
  9. [9]
    Z. Gao et al., Nucl. Instrum. Meth. A 767, 212 (2014).ADSCrossRefGoogle Scholar
  10. [10]
    J. A. Rodriguez et al., in Proceedings of IPAC2016 (Busan, Korea, 2016), p. 2045.Google Scholar
  11. [11]
    S. Calatroni et al., Phys. Rev. Accel. Beams 19, 092002 (2016).ADSCrossRefGoogle Scholar
  12. [12]
    A. Herlert, Y. Kadi, J. Phys. Conf. Ser. 312, 052010 (2011).CrossRefGoogle Scholar
  13. [13]
    Y. Kadi et al., HIE-ISOLDE, Technical Design Report for the Energy Upgrade, CERN, 2018.Google Scholar
  14. [14]
    L. Lista, Statistical Methods for Data Analysis in Particle Physics (Springer, 2017).Google Scholar
  15. [15]
    P. Zhang, A. D’Elia, W. Venturini Delsolaro and K. Artoos, Nucl. Instrum. Meth. A 797, 101 (2015).ADSCrossRefGoogle Scholar
  16. [16]
    T. P. Wangler, RF Linear Accelerators (Wiley, 2008).Google Scholar
  17. [17]
    P. Zhang et al., in Proceedings of SRF2013 (Paris, France, 2013).Google Scholar
  18. [18]
    Hewlett-Packard, 8591A Portable Spectrum Analyzer Service Manual, USA, 1990.Google Scholar
  19. [19]
    L. Alberty et al., in Proceedings of SRF2013 (Paris, France, 2013).Google Scholar
  20. [20]
    A. Sublet et al., in Proceedings of IPAC2014 (Dresden, Germany, 2014).Google Scholar
  21. [21]
    A. Sublet et al., in Proceedings of IPAC2015 (Richmond, VA, USA, 2015).Google Scholar
  22. [22]
    H. Padamsee, in Proceedings of CAS-CERN Accelerator School: Superconductivity for Accelerators (Erice, Italy, 2015), p. 141.Google Scholar
  23. [23]
    W. V. Delsolaro et al., in Proceedings of LINAC2014 (Geneva, Switzerland, 2014).Google Scholar
  24. [24]
    N. Guillotin et al., IOP Conf. Ser.-Mat. Sci. 278, 012121 (2017).Google Scholar

Copyright information

© The Korean Physical Society 2020

Authors and Affiliations

  • Jongchul Lee
    • 1
  • Yacine Kadi
    • 2
  • Pei Zhang
    • 3
  • Mitra Ghergherehchi
    • 4
  • Jong-Seo Chai
    • 4
    Email author
  1. 1.WCU Department of Energy ScienceSungkyunkwan UniversitySuwonKorea
  2. 2.CERNGeneva 23Switzerland
  3. 3.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina
  4. 4.College of Information and Communication EngineeringSungkyunkwan UniversitySuwonKorea

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