Forward Hadronic Calorimeter Absorber Structures

Electron-Ion Collider, Brookhaven National Laboratory Doc No. EIC-DET-SPC-021 Author: Oleg Eyser Effective Date: 6-18-2026 Review Frequency: N/A Specification Title: Forward Hadronic Calorimeter Absorber Structure Revision: 04 This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology TECHNICAL SPECIFICATION for the Forward Hadronic Calorimeter Absorber Structure Quality Classification: A-3 Prepared By: ____________________________________ Date: __________________ Oleg Eyser, Senior Physicist Reviewed By: ____________________________________ Date: __________________ Maggie Haviland, EIC Procurement Liaison Engineer ____________________________________ Date: __________________ Dan Cacace, Mechanical Engineer ____________________________________ Date: __________________ Joseph Zipper, EIC Quality Representative ____________________________________ Date: __________________ Chuck Schaefer, EIC ESH Manager Approved By: ____________________________________ Date: __________________ Elke Aschenauer, Level 2 Manager – EIC Detector Systems Docusign Envelope ID: C63A3065-B787-8B14-8255-C798BC602D06 6/18/2026 6/18/2026 6/18/2026 6/18/2026 6/18/2026 6/21/2026 -- 1 of 11 -- Electron-Ion Collider, Brookhaven National Laboratory Doc No. EIC-DET-SPC-021 Author: Oleg Eyser Effective Date: June 18, 2026 Review Frequency: N/A Specification Title: Forward Hadronic Calorimeter Absorber Structure Revision: 04 This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology Page 2 of 11 This page intentionally left blank, to accommodate back-to-back printing. Docusign Envelope ID: C63A3065-B787-8B14-8255-C798BC602D06 -- 2 of 11 -- Electron-Ion Collider, Brookhaven National Laboratory Doc No. EIC-DET-SPC-021 Author: Oleg Eyser Effective Date: June 18, 2026 Review Frequency: N/A Specification Title: Forward Hadronic Calorimeter Absorber Structure Revision: 04 This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology Page 3 of 11 REVISION HISTORY Revision # Effective Date Summary of Change 00 12/4/2024 Initial Release 01 1/15/2025 Revised requirements for magnetic permeability 02 7/15/2025 Removed testing of pre-production type 4M units from Section 4.1.1, revised Sections 4.1.1 and 4.1.2.2 to state that testing will occur at ORNL 03 3/09/2026 Updated requirements for magnetic permeability, identified locations of samples along each heat of steel 04 6/18/2026 Updated requirements for laser welding, nickel-plating, and GD&T for pre-production modules Docusign Envelope ID: C63A3065-B787-8B14-8255-C798BC602D06 -- 3 of 11 -- Electron-Ion Collider, Brookhaven National Laboratory Doc No. EIC-DET-SPC-021 Author: Oleg Eyser Effective Date: June 18, 2026 Review Frequency: N/A Specification Title: Forward Hadronic Calorimeter Absorber Structure Revision: 04 This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology Page 4 of 11 TABLE OF CONTENTS LIST OF ACRONYMS ...................................................................................................................5 1 SCOPE ....................................................................................................................................6 1.1 Background .......................................................................................................................6 2 APPLICABLE DOCUMENTS ..............................................................................................8 3 REQUIREMENTS ..................................................................................................................8 3.1 Technical/Performance Characteristics ............................................................................8 3.2 Materials ...........................................................................................................................8 3.3 Code/Standard Compliance ..............................................................................................9 3.4 Environment, Safety and Health .......................................................................................9 3.5 Packaging/Shipping ..........................................................................................................9 3.6 Storage ............................................................................................................................10 4 VERIFICATION...................................................................................................................10 4.1 Classification of Inspections ...........................................................................................10 4.1.1. Pre-Production Tests (First Article)..............................................................10 4.1.2. Acceptance Tests ..........................................................................................10 Docusign Envelope ID: C63A3065-B787-8B14-8255-C798BC602D06 -- 4 of 11 -- Electron-Ion Collider, Brookhaven National Laboratory Doc No. EIC-DET-SPC-021 Author: Oleg Eyser Effective Date: June 18, 2026 Review Frequency: N/A Specification Title: Forward Hadronic Calorimeter Absorber Structure Revision: 04 This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology Page 5 of 11 LIST OF ACRONYMS AISI American Iron and Steel Institute ASTM American Society for Testing and Materials ATP Acceptance Test Procedure BNL Brookhaven National Laboratory BSA Brookhaven Science Associates EIC Electron-Ion Collider Fe/Sc Iron-Scintillator GD&T Geometric Dimensioning and Tolerancing IP-6 Experimental Hall of the EIC Detector LFHCal Longitudinally segmented Fo…