Active Magnetohydrodynamic Blanket: Distributed Sensing, Lorentz Actuation, Magnetofluidic Self-Stabilization, Coherence-Aware Interface Architecture, MSS-EFT Turbulence Integration, and Experimental Literature Integration

THE CONTINUUM PARADIGM — Module 2 Extended, Rev. 5. 2Active Magnetohydrodynamic Blanket: Distributed Sensing, Lorentz Actuation, Magnetofluidic Self-Stabilization, Coherence-Aware Interface Architecture, MSS-EFT Turbulence Integration, and Experimental Literature Integration Daniel Junqueira Ribeiro | Independent Researcher | BrazilORCID: 0009-0003-1892-1385 | CC BY 4. 0 ─────────────────────────────────────────────────────────────────────────────WHAT THIS WORK IS This paper develops a complete architectural framework for an ActiveMagnetohydrodynamic (MHD) Blanket in fusion reactors — one in which theliquid-metal (LiPb) blanket functions not as a passive thermal component butas a distributed sensing, actuation, and self-stabilizing system, using onlythe electromagnetic interaction already present in the high-Hartmanninductionless regime. The architecture rests on three physical mechanisms: (1) wall-potentialsensing via ΔV = v·B·L, providing a non-intrusive distributed proxy forlocal flow velocity and plasma boundary state without any plasma-facinginstrumentation; (2) Lorentz-force actuation via F = J×B, applied throughwall electrodes and yielding sub-millisecond response with no moving parts;and (3) a turbulence treatment based on the MSS-EFT scale-separationframework, in which fast turbulent fluctuations are integrated intorenormalized effective parameters rather than suppressed by direct control. ─────────────────────────────────────────────────────────────────────────────HOW THIS WORK DIFFERS FROM THE EXISTING LITERATURE The existing literature on liquid-metal MHD blankets — including experimentalprogrammes at ORNL, KIT, and elsewhere — asks: given that MHD effects arepresent, how should they be characterised, mitigated, and managed? Sensingis used as a diagnostic tool. Actuation is applied as an external correctiveforce. Turbulence is treated as noise to bound or suppress. Blanket lifetimeis defined by mechanical survivability under irradiation, thermal cycling, and corrosion. The governing design question is: when does the blanket fail? This work asks different questions. It asks whether the MHD interaction canbe the primary functional infrastructure of the blanket — not its principalcomplication. It asks whether wall-potential sensing, treated as a real-timedistributed control input rather than a flow meter, can form the closed-loopinput layer of a control architecture requiring no plasma-facing hardware. It asks whether sensing and actuation can share a single electrode array, eliminating separate infrastructure. It asks whether the derivative gain Kdcan be reinterpreted as an effective inertial density contribution —ρₑff = ρ + Kd·B²·L — making control a property of the medium rather thanan externally imposed algorithm. And it asks whether blanket failure shouldbe defined not by mechanical collapse but by loss of readability: thecondition in which the blanket can no longer interpret its own state. These questions have not been formulated in the existing blanket literature. The answers — the coherence-aware architecture, the structural coherence gap, the DIF, i (t) fatigue readability index, the MDF multimodal discriminationlayer, and the BRL bounded reflex architecture — have no direct counterpartsin published blanket research. ─────────────────────────────────────────────────────────────────────────────PRINCIPAL RESULTS - Reduced-order MHD model (0D and 1D) with explicit actuator coupling and spatially non-uniform delay, yielding four operational regimes: Regime A (stable convergence), Regime B (critical response), Regime C₁ (delay-induced spatial decoupling), and Regime C₂ (diffusion-driven pattern formation). - Effective inertial density ρₑff = ρ + Kd·B²·L: derivative control enters the momentum equation as a material-like inertial term. - MSS-EFT framework: scale separation ε = τF/τS ~ 10⁻⁴–10⁻² for DEMO-class LiPb blankets places turbulence in the adiabatically slaved regime, yielding Cdiss, eff = C₀ + kσB² + μₜ (ε) /ℓ². - Regime C₁ (delay-induced spatial decoupling): structural heterogeneity in the delay field τd (i) is a necessary and sufficient condition for phase misalignment and coherence loss without energy instability. - Coherence-aware architecture: four-layer framework comprising GBSM-Ir/G-Ir interface mediation, DIF, i (t) fatigue readability index, MDF multimodal damage discrimination, and BRL bounded basal reflex layer. - The Active MHD Blanket does not fail first by losing stability. It fails first by becoming unreadable to itself. ─────────────────────────────────────────────────────────────────────────────REV. 5. 2 — EXPERIMENTAL LITERATURE INTEGRATION Rev. 5. 2 integrates twelve recent references (2021–2026) that independentlyconfirm or constrain each principal architectural claim: Sensing: Krastins et al. (2023) ; Müller et al. (2021) Actuation: Saenz et al. (2023) ; Smolyanov Giovacchini et al. (2024) MSS-EFT: Tokuzawa et al. (2025) ; Lazarian et al. (2025) ; Hnatic et al. (2024) ; Maeyama et al. (2024) Computation: Lo Verso et al. (2026) Benchmarks: Smolentsev et al. (2025) ; Mistrangelo et al. (2024) ; Khokhlov et al. (2025) No existing content is modified. The Canonical Statement of Rev. 5 ispreserved without alteration. ─────────────────────────────────────────────────────────────────────────────KEYWORDS magnetohydrodynamics, fusion reactor blanket, LiPb, active blanket, distributed sensing, Lorentz actuation, Hartmann flow, effective fieldtheory, multi-scale stability, turbulence renormalization, coherence-awaredesign, distributed control, delay-induced instability, material interface, fatigue readability, GBSM-Ir, basal reflex layer, Continuum Paradigm ─────────────────────────────────────────────────────────────────────────────RELATED WORKS (same framework) Parent framework: Ribeiro, D. J. (2026). The Continuum Paradigm. https: //doi. org/10. 5281/zenodo. 18881076 MSS-EFT companion: Ribeiro, D. J. (2026). Multi-Scale Stability in Far-from-Equilibrium MHD Systems: An Effective Field Theory Approach. https: //doi. org/10. 5281/zenodo. 19161408 Material interface companion: Ribeiro, D. J. (2026). GBSM-Ir and Graphene–Iridium Functional Interfaces: A Failure-Constrained Material Architecture for Active Magnetohydrodynamic Fusion Systems. https: //doi. org/10. 5281/zenodo. 20413156