10–15 Aug 2025
SAFE Credit Union Convention Center
America/Los_Angeles timezone

Digital Twin Framework for PIP-II Linac: AI-Driven Multi-Scale Modeling from Ion Source to 800 MeV

THP028
14 Aug 2025, 16:00
2h
SAFE Credit Union Convention Center

SAFE Credit Union Convention Center

1401 K St, Sacramento, CA 95814
Poster Presentation MC4 – Hadron Accelerators THP: Thursday Poster Session

Speaker

Abhishek Pathak (Fermi National Accelerator Laboratory)

Description

The PIP-II linac will enable >1.2 MW beam power for DUNE, requiring unprecedented operational reliability across its warm front-end (RFQ, MEBT) and five distinct SRF sections operating at 162.5/325/650 MHz. We present a comprehensive digital twin framework uniquely combining a fully differentiable fast beam transport code with neural network surrogates trained on high-fidelity PIC simulations, capturing space charge and nonlinear dynamics beyond traditional envelope codes while achieving 10⁴× speedup at <1% accuracy. End-to-end differentiability enables gradient-based optimization across 500+ parameters simultaneously—previously impossible with conventional tools—while the model incorporates static/dynamic errors and serves as a virtual commissioning platform for diverse hardware integration. The framework facilitates reinforcement learning for pulsed/CW mode transitions, predictive maintenance through anomaly detection, and autonomous tuning algorithm development with real-time execution capability. Validation against physics simulations shows excellent agreement for the front-end, with initial results demonstrating potential for 30% commissioning time reduction and proactive fault mitigation, providing a scalable blueprint for operating next-generation high-intensity accelerators.

Funding Agency

Fermi Forward Discovery Group

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Author

Abhishek Pathak (Fermi National Accelerator Laboratory)

Co-authors

Pierrick Hanlet (Fermi National Accelerator Laboratory) Dr Tia Miceli (Fermi National Accelerator Laboratory)

Presentation materials

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