# Applied Superconductivity & HTS Magnets: State of the Field (October 2026)

Research dossier · v1 · updated 2026-10-30 · 3,691 words · 65 sources · 30 claims · verification: verified

This dossier surveys REBCO coated-conductor magnets, high-field records, superconducting cables, quench protection and superconducting RF cavities as of October 2026. Its central takeaway is that mechanical stress, delamination and quench protection now set the practical limits of ultra-high-field REBCO magnets as much as conductor current does, and that most of the newest evidence is still in preprint form.

## Contents

- Executive summary
- Background and core concepts
- Timeline of key milestones
- State of the art
  - Conductor performance and manufacturing
  - High-field magnets
  - Mechanical behaviour and delamination
  - Cables, AC loss and rotating machines
  - Quench detection and protection
  - Superconducting RF cavities
  - MRI and medical-scale magnets
  - Quantitative benchmarks
- Open problems and active debates
- Major programs and players
- Outlook: what to watch
- Key papers
- Glossary

## Sample findings

- The highest all-superconducting DC field in the peer-reviewed sources verified for this dossier is 32.35 T, reported in 2020.
- A 45.5 T DC field was generated with an HTS magnet in 2019; it is reported as a separate category from all-superconducting records.

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