Round 2 verification audit for C070

Model: gpt-5

Claim: Drive (C) passes ~= 18 mA oscillating at 2 pi x 16.5 MHz through tracks 1.1 mm from the ion, creating a 5.4 uT B-field perpendicular to the trap surface and driving |down><->|up> at Rabi frequency Omega_C = 2 pi x 78 kHz (pi-time 6.4 us).

Source alignment: source/supp_content.tex:135-135 (Supp. Mat. S5)

Prior official verdict: partial with failure_reason None.

Executable evidence: run.py. Sandbox rerun logs: run.log.

Independent audit: I scanned the copied script for imports/shared helper dependencies and reran it through the sandbox. The code is self-contained in this attempt directory and targets the claim strategy: Check the magnetic-dipole Rabi frequency from a 5.4 uT field is consistent with Omega_C = 2 pi x 78 kHz, and that the pi-time 6.4 us = pi/Omega_C.. I checked the relevant family model rather than relying only on exit status; the rerun is treated as one reproducibility input.

Decision: Round 2 verdict is partial with failure_reason None and limitations ['paper_text_only_reimplementation']. Notes: Paper: 18mA at 2pi16.5MHz, tracks 1.1mm -> 5.4uT -> magnetic-dipole Omega_C=2pi78kHz (pi-time 6.4us). (a) pi-time=pi/Omega_C=6.41us matches 6.4us (0.2%, exact identity). (b) infinite-wire B=mu0 I/(2 pi r)=3.27uT at 1.1mm (order-of-magnitude consistent with 5.4uT given two tracks/geometry). (c) Omega=g mu_B B/(2 hbar)=2pi*75.6kHz vs paper 78kHz (~3%), requiring the magnetic-dipole matrix element model. pi-time<->Omega_C identity is exact; the field->Rabi step uses a physical model and is ~3% off -> partial.