The Future of Superconducting Technology for Particle Accelerators

Introduction: - Colliders constructed and operated - Future High Energy Colliders under Study - Superconducting Phases and Applications - Possible Choices among SC Materials Superconducting Magnets and the Future - Advances in SC Magnets for Accelerators - Nb$_{3}$Sn for realizing Higher Field - NbTi to Nb$_{3}$Sn for realizing High Field (> 10 T) - HL-LHC as a critical milestone for the Future of Acc. Magnet Technology - Nb$_{3}$Sn Superconducting Magnets (> 11 T)and MgB2 SC Links for HL-LHC - HL-LHC, 11T Dipole Magnet - Nb$_{3}$Sn Quadrupole (MQXF) at IR - Future Circular Collider Study - Conductor development (1998-2008) - Nb$_{3}$Sn conductor program - 16 T Dipole Options and R&D sharing - Design Study and Develoment for SppC in China - High-Field Superconductor and Magnets - HTS Block Coil R&D for 20 T - Canted Cosine Theta (CCT) Coil suitable with Brittle HTS Conductor - A topic at KEK: S-KEKB IRQs just integrated w/ BELLE-II ! Superconducting RF and the Future - Superconducting Phases and Applications - Possible Choices for SRF among SC Materials - Features of Superconducting RF - Advances in SRF Technology and Accelerators - Advances in SRF Field Gradient - European XFEL, SRF Linac Completed - European XFEL: SRF Cavity Performance - Gradient Performance: Cryomodule v.s. Cavity - LCLS-II Concept - N-Doping Effect on Q and BCS Surface Resistance - “N Doping” Technology transferred to Industry - FRIB SRF Linac Scope - European Spallation Sources - Nb SRF Crab Cavities for HL-LHC - ILC proposed in TDR-2013 - Roadmap of ADS project in China - SRF Accelerator Technology to be advanced - SRF Cavity and Cryomodule Fabrication Process - “N infusion” during 120C bake, improving both G and Q - Possible Consideration and Models - GARD-SRF Decadal Roadmap in the USA - Superconducting Technology to be inevitable for Future Colliders to be “Green Accelerators” - Global Future of the Superconducting Technology for Accelerators Summary - Progress in Nb$_{3}$Sn Conductor Development Program (CDP) for HL-LHC - Cavity Gradient: Production Yield Progress - Better Cavity Shapes to Beat the Limit