LBNF LongBaseline Neutrino Facility Neutrino Beamline Horn A

LBNF Long-Baseline Neutrino Facility Neutrino Beamline Horn A Final Design Review QA Plan and Build Procedures Meredith Lee 28 January 2021

Agenda • Procedure Objectives • Procedures Developed • Traveler Document • Horn Assembly in Flipping Fixture • Summary 2 1. 28. 21 Meredith Lee | QA Plan and Build Procedures LBNF

Procedure Objectives • Promote identical and repeatable assembly process for each horn • List all necessary parameters, relevant drawings, torque specs, tools, etc. • Provide traceability if troubleshooting is required • Can be used as training and reference document 3 1. 28. 21 Meredith Lee | QA Plan and Build Procedures LBNF

Procedures Developed • Electrical Isolator Assembly All procedures available at DUNE -doc-21618 • Aluminum Welding Specification • Electroless Nickel Plating Specification • Friction Stir Welding Requirements for Conductor Buswork • HI-POT Voltage Testing Procedure for LBNF Focusing Horns • Instrumentation Line Assembly Procedure • Horn A Spider Supports Installation Procedure • LBNF Horn Assembly in Flipping Fixture • LBNF Horn Inner Conductor Welding • LBNF Horns Traveler • Silver Brush-Plating Procedure for Focusing Horns • Vendor Specification for LBNF Silver Plating 4 1. 28. 21 Meredith Lee | QA Plan and Build Procedures LBNF

Traveler Document • Document containing all QA checks and signoffs for every assembly and fabrication step • Categorized by specific parts, assemblies and processes • References in-depth procedures • One traveler assigned and populated for each horn built 5 1. 28. 21 Meredith Lee | QA Plan and Build Procedures LBNF

Horn A Assembly in Flipping Fixture • Flipping fixture rotates outer conductor to allow inner conductor to be lowered and installed vertically • Install collars, flanges and shafts - Outer conductor resting horizontally Collars, flanges and shafts installed 6 1. 28. 21 Meredith Lee | QA Plan and Build Procedures Flipping fixture stands LBNF

Horn A Assembly in Flipping Fixture • Lift outer conductor with overhead crane and assemble in the stands - Sleeve bearing with split housing • Flip outer conductor to vertical position Outer conductor initial position in fixture 7 1. 28. 21 Meredith Lee | QA Plan and Build Procedures Outer conductor rotated to vertical LBNF

Horn Assembly in Flipping Fixture • Lower inner conductor and fasten to outer conductor • Rotate horn to horizontal position and lift out of fixture Inner conductor lowered and installed 8 1. 28. 21 Meredith Lee | QA Plan and Build Procedures Horn rotated to horizontal position for removal LBNF

Summary • Traveler ensures all QA checks are completed during horn assembly • Twelve in-depth horn procedures for specific processes or assemblies • All procedures can be found at DUNE-doc-21618 9 1. 28. 21 Meredith Lee | QA Plan and Build Procedures LBNF