Abstract
This technical design document proposes the Somatic Control Framework, a novel hierarchical control architecture designed to stabilize tokamak plasmas through resonant multi-frequency modulation. Unlike conventional black-box controllers that are often device-specific, the Somatic Framework decomposes plasma dynamics into physically interpretability modes: the Global Heartbeat (M_B) targeting tearing modes, the Edge Theta (M_\theta) managing pedestal stability, and the Fast Gamma (M_\gamma) addressing turbulence.
This entry details the methodology for cross-device transfer, specifically enabling the portability of control policies from DIII-D to KSTAR. We define a scaling law based on dimensionless parameters (including normalized gyroradius \rho_*, plasma beta \beta, and safety factor q) to map Alfvénic frequencies and control gains between machines with differing geometries. Finally, we present a phased experimental roadmap, progressing from integrated TRANSP modeling validation to a pilot experimental campaign on DIII-D, and culminating in a "few-shot" transfer protocol for KSTAR. This approach offers a scalable pathway for designing certifiable, transfer-ready control systems for ITER.
Keywords:
Tokamak Control, MHD Stability, Cross-Device Transfer, DIII-D, KSTAR, Dimensionless Scaling, Tearing Modes, Somatic Modal Basis.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Church, Samuel, "Somatic Control Framework for Tokamak Plasmas", Technical Disclosure Commons, (December 11, 2025)
https://www.tdcommons.org/dpubs_series/9027