♻️ 🧲 Refactor croco 2

[chris-ashe]

Description

Checklist

I confirm that I have completed the following checks:

• My changes follow the PROCESS style guide
• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 15.38462% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.83%. Comparing base (c1e32d4) to head (ea2cdd9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
process/models/tfcoil/superconducting.py	15.38%	33 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3909      +/-   ##
==========================================
+ Coverage   47.81%   47.83%   +0.02%     
==========================================
  Files         143      143              
  Lines       29993    30070      +77     
==========================================
+ Hits        14341    14384      +43     
- Misses      15652    15686      +34     

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