Electronic Supplementary Material (ESM_1) for:
"Effective Lorentz Factor and Analogue Horizon in a Giant Quantum Vortex of Superfluid Helium-4: Design of a Laboratory-Scale Pre-Experiment with an Optional Cryogenic Module for a Dual-Capsule Apparatus"
Journal of Low Temperature Physics submission. Author: Hasan Börekci, HB ZECHMANN Medical Company, Manisa, Türkiye, hborekci@hotmail.com.tr

calc.py       - calculation model (all numbers in the paper); writes results.json
verify.py     - independent re-computation of the key quantities from primary constants (15/15 checks)
results.json  - output of calc.py
figs_jltp.py, fig3d.py, fig3d_v2.py, fig5.py - PyVista/matplotlib scripts for Figs. 1, 2, 4, 5
fig6_jltp.py  - Fig. 3 (helium gas-handling and cryogenic circuit)
fig4_jltp.py  - Fig. 6 (calculated quantities)
refcheck.py   - Crossref/DataCite verification of every DOI in the reference list
Run: python3 calc.py && python3 verify.py
