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High Power Laser and Particle Beams, Volume. 37, Issue 7, 074006(2025)

Design and optimization of quadrupole and sextupole magnets for Shenzhen Innovation Light-source Facility storage ring

Jiawu Zhu, Miao Zhang, and Yong Wang
Author Affiliations
  • Institute of Advanced Light Source Facilities, Shenzhen 518107, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
    Equations (2)
    References (6)
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    Paper Information
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    Figures & Tables(13)
    Magnets layout of H7BA cell with 2.0 T SuperBend (type I) and 3.2 T SuperBend (type II)

    Fig. 1. Magnets layout of H7BA cell with 2.0 T SuperBend (type I) and 3.2 T SuperBend (type II)

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    The QF1 By integral field homogeneity in GFR (left), the optimized pole shape (middle) and the 3D mechanical design (right)

    Fig. 2. The QF1 By integral field homogeneity in GFR (left), the optimized pole shape (middle) and the 3D mechanical design (right)

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    The QB4 Bxand By integral field homogeneity in GFR and the 3D mechanical design (right)

    Fig. 3. The QB4 Bxand By integral field homogeneity in GFR and the 3D mechanical design (right)

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    The SF1 Bx and Byintegral field homogeneity in GFR and the optimized pole shape (right)

    Fig. 4. The SF1 Bx and Byintegral field homogeneity in GFR and the optimized pole shape (right)

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    The nested correction coils in sextupole magnet and the current directions (left) and the 3D mechanical design (right)

    Fig. 5. The nested correction coils in sextupole magnet and the current directions (left) and the 3D mechanical design (right)

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    The integrated horizontal (left) and vertical (right) correction fields

    Fig. 6. The integrated horizontal (left) and vertical (right) correction fields

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    The initial pole outline definition by input the points coordinates (left) and explanation of the substituted smooth curve (right)

    Fig. 7. The initial pole outline definition by input the points coordinates (left) and explanation of the substituted smooth curve (right)

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    The chart flow for quadrupole and sextupole magnets pole shape optimization

    Fig. 8. The chart flow for quadrupole and sextupole magnets pole shape optimization

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    Fitting of the ratio between 2D and 3D fields of a quadrupole magnet

    Fig. 9. Fitting of the ratio between 2D and 3D fields of a quadrupole magnet

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    • Table 1. Basic design parameters of the quadrupoles

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      Table 1. Basic design parameters of the quadrupoles

      magnets in groupsfield gradient/ (T·m−1)effective magnetic length/cmcurrent/Aturn number per windingconductor size/(mm×mm)power/kWwater flow rate/(L·min−1)
      QF136.2325.0115.4327×70.690.774
      QD1/QF3/QD3/QD5−36.2/34.8/−41.9/−37.018.0133.4327×70.770.852
      QD2/QF2−33.1/44.5612.0141.9327×70.730.95
      QF4/QF551.5/48.035.0163.9328×81.391.50
      QD4−39.120.0124.5327×70.710.83
      QD6−28.016.089.1327×70.330.88

    • Table 2. The integrated field harmonics of the quadrupoles

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      Table 2. The integrated field harmonics of the quadrupoles

      magnets in groupsB6/B2B10/B2B14/B2B18/B2
      QF1−9.98E-61.68E-5−8.79E-6−4.65E-7
      QD1/QF3/QD3/QD5−2.26E-52.84E-5−1.21E-5−5.09E-7
      QD2/QF2−3.95E-61.01E-5−1.16E-5−3.20E-7
      QF4/QF5−3.52E-52.21E-5−8.80E-6−5.10E-7
      QD4−8.69E-61.21E-5−9.44E-6−2.63E-7
      QD6−3.35E-52.68E-5−1.10E-52.07E-7

    • Table 3. Basic design parameters of Q-bend and sextupole magnets

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      Table 3. Basic design parameters of Q-bend and sextupole magnets

      magnetsfield strengthdipole field/Tmagnetic length/cmcurrent/Aturn number per windingconductor size/(mm×mm)power/kWwater flow rate/(L·min−1)
      QB1/QB3−26.87/-29.08 T/m0.3576/0.345264.5/65.0265.6/287.4328×85.78/6.812.03/2.02
      QB2/QB451.43/51.16 T/m−0.2766/-0.287645.0237.2/236.1368×84.94/4.891.95
      SF1/SD1/SD21900.4/−1853.1/−1532.8 T/m2/15.088.0126×60.20.96

    • Table 4. The integrated field harmonics of Q-bend and sextupole magnets

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      Table 4. The integrated field harmonics of Q-bend and sextupole magnets

      magnetsB6/B2, B9/B3B10/B2, B15/B3B14/B2, B21/B3B18/B2, B27/B3
      QB1−2.45E-51.32E-4−7.28E-5−2.0E-5
      QB2−7.02E-54.82E-5−2.50E-5−3.89E-5
      QB3−5.14E-51.32E-4−7.26E-5−1.98E-5
      QB4−6.93E-54.82E-5−2.50E-5−3.89E-6
      SF1/SD1/SD21.07E-5−7.52E-61.44E-6−8.49E-6
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    Jiawu Zhu, Miao Zhang, Yong Wang. Design and optimization of quadrupole and sextupole magnets for Shenzhen Innovation Light-source Facility storage ring[J]. High Power Laser and Particle Beams, 2025, 37(7): 074006

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    Paper Information

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    Received: Oct. 8, 2024

    Accepted: May. 20, 2025

    Published Online: Jul. 18, 2025

    The Author Email:

    DOI:10.11884/HPLPB202537.240352

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology