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Development of High-Field Magnets: LT Dipole Project Overview

This document outlines the collaborative efforts between Lawrence Berkeley National Laboratory (LBNL) and Texas A&M University (TAMU) to advance high-field magnet design through modular approaches and systematic milestones. The project focuses on three main magnet types: LT1 (13T Nb3Sn), LT2 (15T with a BSCCO-2212 racetrack), and LT3 (19T with flared winding). Key topics include stress management of reacted cables, structural support during assembly, and design features that allow for part reuse and safe removal processes, enhancing the overall efficiency and safety of magnet assembly.

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Development of High-Field Magnets: LT Dipole Project Overview

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  1. The LT Dipole July 8th, 2014

  2. Motivation • Combine expertise of LBNL & TAMU to overcome common obstacles and reach higher fields with regular milestones • Modular approach • LT1: 13T Nb3Sn open-aperture (9x5 cm2) • LT2: 15T, LT1 + a racetrack of BSCCO-2212 • LT3: 19T, LT2 + a flared winding of BSCCO-2212 • Stress management and continuous support of reacted cable to avoid damage losses

  3. Magnetics for LT1

  4. Magnetics for LT2

  5. Magnetics for LT3 Stress management structure

  6. Before pancake winding Window for quench heaters and voltage taps Add pic of just mandrel

  7. Mandrel ‘heart’ Common design allows part reuse Thin-skin slots into place Magnetic cutout also serves as a slot

  8. Pancake and associated structure

  9. Pre-structure for flare These pieces provide supported form, and allow safe removal of flare • 873mm bending radius, 10° arc (same as HD3)

  10. Flared winding and structure Window for quench heaters and voltage taps Pins for flare?

  11. Remove mandrel ‘heart’ and install spanner plates Aperture now cleared in end pieces • Continuous support of Nb3Sn mitigates assembly damage

  12. Assembling two halves Common wall pushes out plates through thick-skin • Continuous support of Nb3Sn mitigates assembly damage

  13. Removal of spanner plates

  14. Completed coil package

  15. Bladder/key magnet assembly • Similar to HD2/HD3, yoke is keyed against shell, then coil package is inserted and keyed

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