Dipole Magnets for EIC ESR D1-D3 and D2

Addendum No. 1 To all Potential/Interested Suppliers, GENERAL: This Addendum is to share D1/D3 length changes that have been completed, this does not impact the RFI as stated previously, the full set of drawings will be available at the competitive solicitation. Request for Information RFI No. 000538-000539-CAB closes on Monday, June 29, 2026 (5:00 P.M. EST). Updates: 2104M0000: Interface, ESR D1/D3 12-5 turn 2104M0013: ESR D1/D3 12 to 5 Magnet Coil, Top 2104M0014: ESR D1/D3 12 to 5 Magnet Coil, Bottom 2104M0016: ESR D1/D3 Magnet Lamination 2104M0022: ESR D1/D3 Trim Coil, Top 2104M0024: ESR D1/D3 Trim Coil, Bottom All other terms shall remain unchanged If you have any

questions, please contact the Contracts Specialist below: Cindy Blanchard Senior Contracts Specialist Procurement & Property Management Division Brookhaven National Laboratory Upton, New York 11973 Phone: (631) 344-5770 Email: [email protected] Cindy Blanchard Contracting .O. Box 5000 (No Street Address

2) Upton, NY 11973 USA to this opportunity. 2104m0024_RevA.pdf 2104m0022_RevB.pdf 2104m0014_RevC.pdf 2104m0013_RevC.pdf 2104m0000_RevB.pdf RFI 000538-000539-CAB Addendum No 1.pdf RFI 000538-000539-CAB EIC ESR D1-D3 - D2 Dipole Magnets 6.12.2026.pdf Attachment H- bsa_non-commercial_product_rev24 (1).pdf Attachment G- D2 Technical Drawings.zip Attachment F- D1-D3 Technical Drawings.zip Attachment E- BNL-QA-101 Revision 4.2025.pdf Attachment D- Technical Specification for the ESR D2 Dipole Magnets (updated 5.16.2026).docx Attachment C- Technical Specification for the ESR D1D3 Dipole Magnets (updated 5.08.2026).docx Attachment B- Statement of Work for the ESR D2 Dipole Magnets (updated 4.29.2026).docx Attachment A- Statement of Work for the ESR D1D3 Dipole Magnets (updated 6.08.2026).docx