♻️ Refactor CroCo routines and variables

[chris-ashe]

This pull request refactors and standardizes the naming conventions for CroCo cable and REBCO tape geometry variables throughout the codebase, updates related documentation, and introduces a new plotting function for CroCo cable geometry. The changes improve code clarity, consistency, and maintainability, and provide better documentation and visualization of CroCo cable geometry.

A new function calculate_croco_cable_geometry() has been made to specifically calculate the cable dimensions

🔄 Variable renaming and standardization (most impactful):

• All REBCO tape and CroCo cable geometry variables have been renamed for clarity and consistency, replacing ambiguous names like rebco_thickness, copper_thick, croco_od, and croco_thick with standardized names:

croco_od -> dia_croco_strand
croco_thick -> dx_croco_strand_copper
rebco_thickness -> dx_hts_tape_rebco
copper_thick -> dx_hts_tape_copper
hastelloy_thickness -> dx_hts_tape_hastelloy
stack_thickness -> dx_croco_strand_tape_stack
tape_thickness -> dx_hts_tape_total
tape_width -> dr_hts_tape
tapes -> n_croco_strand_hts_tapes
rebco_area -> a_croco_strand_rebco
hastelloy_area -> a_croco_strand_hastelloy
solder_area -> a_croco_strand_solder
croco_id -> dia_croco_strand_tape_region
copper_area -> a_croco_strand_copper_total

croco() ->calculate_croco_cable_geometry()

❇️ New variables

a_croco_strand

Documentation updates:

• Updated the documentation in superconductors.md to describe the CroCo cable geometry calculation with clear variable mappings to code identifiers, improving traceability between theory and implementation.

CroCo cable geometry plotting:

• Added a new function plot_corc_cable_geometry to process/io/plot_proc.py for visualizing CroCo strand geometry, including copper jacket, solder, HTS tape stack, and individual tape layers.

Data structure and initialization improvements:

• Updated initialization and grouping of CroCo and REBCO tape geometry variables in process/data_structure/rebco_variables.py to use the new standardized names and added descriptive comments for each variable.

Function and interface updates:

• Updated all function calls and interfaces in relevant modules (e.g., superconpf, supercon_croco) to use the new variable names, ensuring consistency and reducing confusion.

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 56.00000% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.84%. Comparing base (9fc4b8b) to head (69ab458).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
process/io/plot_proc.py	6.45%	29 Missing ⚠️
process/superconductors.py	51.72%	14 Missing ⚠️
process/superconducting_tf_coil.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3891      +/-   ##
==========================================
- Coverage   46.40%   44.84%   -1.56%     
==========================================
  Files         123      123              
  Lines       28173    30511    +2338     
==========================================
+ Hits        13073    13684     +611     
- Misses      15100    16827    +1727     

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[timothy-nunn]

Couple of questions/minor changes. Havent checked documentation/eng-models/superconductors.md

[j-a-foster]

Happy with the image attached to the PR.