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Development of a control system for the fourth-harmonic cavity of the HLS storage ring

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Abstract

Harmonic RF cavities are commonly used in storage rings to lengthen the bunches and thus suppress the beam’s instabilities and increase its Touschek lifetime. The voltage and phase of the electromagnetic fields in the harmonic cavity are of great importance for stretching the bunch. In the Hefei Light Source storage ring, a passive fourth-harmonic cavity is installed, and the cavity is monitored and controlled by an analog control module provided by its manufacturer. To vary and maintain the voltage of the harmonic cavity in a more effective way, a digital proportional, integral, and derivative feedback system based on the Experimental Physics and Industrial Control System is developed on top of the analog control module. This paper reports the details of the development of this voltage control system. Some test and operational results are also presented.

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References

  1. P.F. Tavares, Å. Andersson, A. Hansson, Equilibrium bunch density distribution with passive harmonic cavities in a storage ring. Phys. Rev. Spec. Top. Accel. 17, 064401 (2014). https://doi.org/10.1103/PhysRevSTAB.17.064401

    Article  Google Scholar 

  2. G. Penco, M. Svandrlik, Experimental studies on transient beam loading effects in the presence of a superconducting third harmonic cavity. Phys. Rev. Spec. Top. Accel. 9, 044401 (2006). https://doi.org/10.1103/PhysRevSTAB.9.044401

    Article  Google Scholar 

  3. G. Skripka, Å. Andersson, A. Mitrovic et al., Commissioning of the harmonic cavities in the MAX IV 3 GeV ring, in Proceedings of IPAC 2016, Busan, Korea, 2016, WEPOW035 (2016), pp. 2911–2913. https://doi.org/10.18429/JACoW-IPAC2016-WEPOW035

  4. J.M. Byrd, S.D. Santis, M. Georgsson, Commissioning of a higher harmonic RF system for the advanced light source. Nucl. Inst. Methods A 455, 271 (2000). https://doi.org/10.1016/S0168-9002(00)00504-0

    Article  Google Scholar 

  5. K. Kleman, A bunch lengthening RF cavity for Aladdin, in Proceedings of the 1995 Particle Accelerator Conference, Dallas (1995), p. 1795. https://doi.org/10.1109/PAC.1995.505361

  6. M. Georgsson, Å. Andersson, Landau cavities at MAX II. Nucl. Inst. Methods A 416, 465 (1998). https://doi.org/10.1016/S0168-9002(98)00667-6

    Article  Google Scholar 

  7. H. Fan, C.F. Wu, G.C. Liu, Calculations of operating schemes for a passive harmonic cavity in HLS- II. Chin. Phys. C 36(9), (2012). https://doi.org/10.1088/1674-1137/36/9/018

    Article  Google Scholar 

  8. G.M. Ma, Z.T. Zhao, J.F. Liu, Design of a higher harmonic cavity for the SSRF storage ring. Chin. Phys. C 32(4) (2008) https://doi.org/10.1088/1674-1137/32/4/007

    Article  Google Scholar 

  9. L. Liu, N. Milas, A.H. Resende, The SIRIUS project. J. Synchrotron Radiat. 21, 904–911 (2014). https://doi.org/10.1107/S1600577514011928

    Article  Google Scholar 

  10. P.F. Tavares, S.C. Leemann, M. Sjöström, J. Synchrotron Radiat. 21, 862–877 (2014). https://doi.org/10.1107/S1600577514011503

    Article  Google Scholar 

  11. M. Borland, G. Decker, L. Emery, J. Synchrotron Radiat. 21, 912–936 (2014). https://doi.org/10.1107/S1600577514015203

    Article  Google Scholar 

  12. C. Wu, R. Bosch, S. Dong et al., The 4-th harmonic cavity for Hefei light source-II. in Proceedings of IPAC 2016, Busan, Korea, 2016, MOPOW054. (2016), pp. 837–839. https://doi.org/10.18429/JACoW-IPAC2016-MOPOW054

  13. Experimental physics and industrial control system (EPICS). http://www.aps.anl.gov/epics/. Accessed Dec 2011

  14. E.M. Dufresne, D.A. Arms, E.C. Landahl, et al., Impact of pressure regulation of cryuogenic fliuds and EPICS EPID feedback on the monochromatic beam position stability of the 7ID beamline at the advanced photon source. in Proceedings of SRI 2006, Daegu, Korea, 2007 (2006), pp. 950–953. https://doi.org/10.1063/1.2436219

  15. A. Akiyama, K. Furukawa, E. Kadokura et al., Accelerator control system at KEKB and the linac. Prog. Theor. Exp. Phys. 3, 03A008 (2013). https://doi.org/10.1093/ptep/pts081

    Article  Google Scholar 

  16. K. Xuan, W. Xu, C. Li et al., Voltage Control For The 4-th Harmonic Cavity In HLS Storage Ring. in Proceedings of IPAC2016, Busan, Korea, 2016, WEPOR003. (2016), pp. 2664–2666. https://doi.org/10.18429/JACoW-IPAC2016-WEPOR003

  17. P. Stanley, J. Anderson, M. Kraimer, et al., EPICS 3-14 Record Reference Manual. https://wiki-ext.aps.anl.gov/epics/index.php/RRM_3-14. Accessed Dec 2011

  18. W. Xu, J.G. Wang, K. Xuan et al., Upgrade project on top-off operation for Hefei light source. in Proceedings of IPAC 2017, Copenhagen, Denmark. (2017), pp. 2719–2722 https://doi.org/10.18429/JACoW-IPAC2017-WEPAB064.

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Authors and Affiliations

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

    Wen-Bo Wu, Ke Xuan, Wei Xu, Ji-Gang Wang, Chuan Li, Gong-Fa Liu, Cong-Feng Wu & Jing-Yi Li

  2. Institute of High Energy Physics, CAS, Beijing, 100049, China

    Jing-Yi Li

Authors
  1. Wen-Bo Wu
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  2. Ke Xuan
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  3. Wei Xu
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  4. Ji-Gang Wang
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  5. Chuan Li
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  6. Gong-Fa Liu
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  7. Cong-Feng Wu
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  8. Jing-Yi Li
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Corresponding author

Correspondence to Wei Xu.

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This work was supported by the National Natural Science Foundation of China (No. 11375177)

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Wu, WB., Xuan, K., Xu, W. et al. Development of a control system for the fourth-harmonic cavity of the HLS storage ring. NUCL SCI TECH 29, 153 (2018). https://doi.org/10.1007/s41365-018-0497-7

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  • DOI: https://doi.org/10.1007/s41365-018-0497-7

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