EIC (Electron Ion Collider) Work in Progress

Work in progress on EIC magnet designs from Ramesh Gupta (a large amount of work is being done by others also).

The purpose of this page is to record how the designs have evolved and why certain choices were made at that time, and what options were evaluated (presentations on Q2pF only). Please also visit: EIC Tutorials and Magnet Design Help and SBIRs/STTRs on EIC.

  1. A Novel Combined Function Optimum Integral Design for EIC Spectrometer Magnet B0pF (https://www.appliedsuperconductivity.org/asc2026/).
  2. Design, construction, and test of R&D dipole B0ApF for the EIC (https://www.appliedsuperconductivity.org/asc2026/).
  3. Updated Design of the EIC IR Dipole Magnet B0ApF, Abstract for ASC2026 (https://www.appliedsuperconductivity.org/asc2026/).
  4. Magnetic Design and Analysis Meeting, January 23, 2026.
  5. Report on Magnetic Design and Analysis Bi-weekly Meeting- Conductor Modelling, January 20, 2026.
  6. Previous Studies on the Tapered Q1ABpF, FC1 Weekly Tracking Meeting, January 14, 2026.
  7. Introduction and Standardizing Conductor Parameters, EIC IR Magnets Magnetic Analysis Bi-weekly Meeting, January 9, 2026.
  8. B1pF/B1ApF Direct Wind Optimum Integral Design Option (a possible lower cost 4.5 K alternative), January 6, 2025.
  9. A Possible 4.5 K Option for B0pF with the Combined Function Optimum Integral Design, December 23, 2025.
  10. Combined Function Optimum Integral Design for B0pF (Risk reduction), Magnet Steering Group (MSG) meeting, December 19, 2025.
  11. B2pF Q3 Superconducting Corrector Package (initial investigations), EIC B2pF Collaboration Bi-Weekly Meeting December 17, 2025.
  12. B0ApF Status, FC1 Weekly Tracking Meeting, December 10, 2025.
  13. Ic(B,T) Fit and Other Conductor Related Input of Wires and Cables for EIC Magnets, December 9, 2025.
  14. Initial Design Studies for the Tapered Q1ABpF, December 4, 2025.
  15. Optimum Integral Design (OID) for Risk Reduction in B0pF, Magnet Steering Group (MSG) meeting, October 17, 2025.
  16. Investigation of the Optimum Integral Design for B0pF, September 24, 2025.
  17. Update on the Optimum Integral Design for B0pF, August 18, 2025.
  18. First Look at the Optimum Integral Design for B0pF, August 14, 2025.
  19. A New Medium Field Superconducting Magnet for the EIC, FY25 Nuclear Physics SBIR/STTR Phase II Exchange Meeting, July 30, 2025.
  20. Optimum Integral Design and It’s Application to EIC Magnets, Magnet Steering Group Meeting, July 25, 2025.
  21. Design, construction, and test of a superconducting dipole B0ApF based on the Optimum Integral Design (https://mt29-conf.org/), Thu-Mo-Or1-03, Boston, July 1 – 6, 2025 (abstract).
  22. Optimum Integral Design for EIC Dipole B1pF/B1ApF, MT29 – International Conference on Magnet Technology (https://mt29-conf.org/), Fri-Mo-Po.05-04, Boston, July 1 – 6, 2025 (poster).
  23. Optimum Integral Dipole B0ApF, Magnet Steering Group Meeting, June 6, 2025.
  24. Q2pF Electromagnetic Design, Magnet Steering Group meeting, April 18, 2025. (addendum for informal notes on strategies to assure good field quality in the 1st magnet).
  25. Q2pF EM Design Updates, Meeting with Fermilab Colleagues, April 10, 2025.
  26. Initial Investigation of Direct Wind B1pF/B1ApF (with Optimum Integral Dipole Design), February 25, 2025.
  27. A Proposed Value Engineering Design for B1ApF, January 7, 2025.
  28. RHIC e-lens Solenoid Experience, December 4, 2024.
  29. EIC Cable Magnets, October 18, 2024.
  30. Status of Q2pF OPERA3d Model, August 20, 2024.
  31. Status of Q2pF End Design for updated turn-to-turn spacing, April 23, 2024.
  32. Status of Q2PF Quad EM Design, Meeting with Fermilab on Options for EIC SC Forward Quadrupoles, April 18, 2024.
  33. Revised Q2pF Lead End for updated turn-to-turn spacing, April 9, 2024.
  34. Revised Q2pF Return End for updated turn-to-turn spacing, March 12, 2024.
  35. Revised Q2pF Cross-section with updated turn-to-turn spacing, March 5, 2024.
  36. Q2pF Coil with Lead and Return Ends, February 27, 2024.
  37. Q2PF EIC IR SC Magnet design Status, February 7, 2024.
  38. Towards the Design of Q2pF Lead End, February 6, 2024.
  39. Tunability of Q2pF End Design, January 30, 2024.
  40. Status of Q2pF Return End Design, January 23, 2024.
  41. Strategies to Assure/Tune Field Quality in EIC IR Cable Magnets (with B1pF as an example).
  42. Investigation of Tuning Shims in Q2pF, December 19, 2023.
  43. Status of Q2pF End Design, December 12, 2023.
  44. Progress in Q2pF End Design, November 7, 2023.
  45. Magnetic design of the interaction region quadrupole Q2pF for EIC, Poster at MT28 – International Conference on Magnet Technology (https://mt28.aoscongres.com/home!en), September 15, 2023.
  46. A Novel, Medium-field Optimum Integral Dipole, Presented at MT28 – International Conference on Magnet Technology (https://mt28.aoscongres.com/home!en), September 14, 2023.
  47. Investigation of Tuning Shims in Q2pF, August 1, 2023
  48. Tuning Shims to Achieve Good Field Quality in Q2pF and Other EIC Magnets, July 18, 2023
  49. Progress in Q2pF Design (Symmetric Wedges), June 20, 2023.
  50. Investigation of Q2pF Ends for Favorable Tilt Angles, May 30 2023.
  51. More Cutouts in B1pF Yoke for Structure Elements for Intermediate Testing, March 7, 2023
  52. Progress on Accommodating Large Cutout in B1pF Inner Yoke Geometry, February 28, 2023
  53. Status of B1pF Inner Yoke 2d and Coil End Geometry, February 21, 2023
  54. B1pF Coil End Geometry, February 14, 2023
  55. Yoke Optimization of B1pF Dipole, February 14, 2023
  56. Inner Yoke Optimization of B1pF, February 7, 2023
  57. Yoke Optimization of B1pF, January 30, 2023
  58. Persistent Currents in RHIC Dipoles Measurements and Calculations (continued), December 20, 2022
  59. Persistent Currents in RHIC Dipoles Measurements and Calculations, December 6, 2022
  60. End Optimization of B1pF (300 mm)Mechanical and Magnetic, November 11, 2022
  61. Optimum Integral Dipole STTR for EIC, October 5, 2022
  62. Detailed Results from OPERA3-d Model of Q2pF, September 20, 2022
  63. 3-d Optimization of Q2pF, August 23, 2022
  64. 3-d Optimization of the Magnetic Design of Q2pF, August 16, 2022
  65. Magnet Length, Margin, etc., June 14, 2022
  66. Starting of 3-d Optimization of the Magnetic Design of Q2pF, June 7, 2022
  67. Q1ApF Cross section for 2K Operation (one design study), May 23, 2022
  68. General Approach to 3-d Optimization of the Magnetic Design, May 23, 2022
  69. Q2pF Yoke Cross-section Impact of Heat Exchanger Hole, May 10, 2022
  70. Q2pF Yoke Cross-section(15 mm cable @ 2K), April 20, 2022
  71. Q2pF Cross-section(15 mm cable @ 2K), April 13, 2022
  72. Q2pF Cross-section for 2K Operation, April 4, 2022
  73. Cable Parameters of the EIC IR Cable Magnets, March 21, 2022
  74. Starting parameters of the EIC IR design, March 15, 2022
  75. Overall Plan of Work and Status of EIC IR Cable Magnets, March 8, 2022
  76. Another Phase I SBIR/STTR Proposal using the Direct Wind Technology, August 10, 2021
  77. Impact of Larger Collar and Tie Rods Holes in Q2pF Yoke, May 18, 2021
  78. Cross-talk Control between Q1BpF & Q1eF, 3-d Analysis and Alternate Lower Cost Design, May 4, 2021
  79. Cross-talk Control between Q1BpF & Q1eF (Impact on Field Harmonics), April 20, 2021
  80. Cross-talk Control between Q1BpF & Q1eF (understanding & implementation of the novel solution), April 6, 2021
  81. EIC IR Magnet  Design Summary (FY20), November 2020
  82. 3-d Analysis of Q1BpF with Q1eF for 4K Operation, October 6, 2020
  83. Evaluation of RHIC Magnets for EIC (higher energy and higher temperature), 80 mm and 100 mm Dipoles, September 28, 2020
  84. B1pF & B1apF Cross-sections, Sept 22, 2020
  85. Evaluation of RHIC Magnets for EIC (higher energy and higher temperature), RHIC Arc Dipole (80 mm), September 17, 2020
  86. Q2pF 3-d Design Studies, Sept 1, 2020
  87. Design of Q1BpF with Q1eF for 4K Operation, July 28, 2020
  88. Q1ApF and Q1BpF Design for 4K Operation, July 21, 2020
  89. Q1ApF Coil and Q1BpF Iron plus Q1BpF Coil Redesign for 4K Operation, July 14, 2020
  90. Q1BpF Design for 4K Option, June 30, 2020
  91. Q2pF Design for 4K Option, June 23, 2020
  92. Q2pF Studies for 4K Option, June 16, 2020
  93. HTS Magnets for eRHIC, FFAG’14 International Workshop on FFAG Accelerators, September 26, 2014 (workshop site)