On a mission to accelerate fusion companies by bridging world-class science with deployable, industry-ready solutions.
Fusion Industry Partner
We help fusion builders go from first concept to a working device: Integrated Modeling to design and prove it, Fusion Diagnostics to measure it, and Plasma Control to operate it.
JET · DIII-D · MAST · WEST · ST40 · COMPASS · JT-60SA · ITER · T-10 · T-15MD · TJ-II
UC San Diego · Columbia University · UCLA · University of Tuscia · IST Lisbon · RFX Padua · and more
DANTE Fusion · Pranos Fusion · Cosylab · FEInn · Maritime Fusion · NDA Tritium Breeding VNS
What We Do
We bring together plasma simulation, diagnostics, and control into reliable, fully integrated solutions for fusion builders.
Integrated Modeling
We support tokamak and other MCF device builders from feasibility study to design and engineering, commissioning and operations by delivering reliable simulations using our many times verified and validated integrated modeling framework.
Learn moreFusion Diagnostics
We deliver measurement solutions, physics-enabled at every step, for next-gen MCF devices and future FPPs — standalone diagnostics or an integrated Modular Diagnostics Platform — that enable physics validation, plasma control, device safety, and the licensing case.
Learn morePlasma Control
We combine conventional and AI/ML tech to build reliable plasma control solutions — individual controllers, their development and test environment, discharge scenario builder, and the entire PCS — for next-gen MCF devices and future FPPs.
Learn moreFusion Experts
Our team comprises plasma physicists, fusion engineers, software developers, and machine learning specialists. Based across the EU and UK, with headquarters in Luxembourg.
Meet our leadership team →
Tokamak assembly hall
At the tokamak
ITER model
Team workshop
Visiting ITER
Made in Luxembourg award
Why Next Step Fusion?
Deep expertise across plasma science, engineering, diagnostics, software, control, and machine learning — all under one roof.
Fully fusion-focused
We are passionate about fusion: 100% of our work is dedicated to the fusion industry. No diluted priorities — just deep expertise in the field.
Proven plasma scientists
Our physicists come from leading public research organizations with hands-on experience at JET, DIII-D, MAST, ITER, JT-60SA, ST40, COMPASS, and more.
Experienced engineers
Real device experience across tokamak operations, diagnostics development, design and engineering, and control system deployment.
Integrated modeling
State-of-the-art simulation workflows for tokamak design and scenario development, built on tools like NSFsim, TGLF, TRAVIS, and ASCOT5.
Fusion diagnostics
End-to-end diagnostics solutions for next-gen devices, from concept and design through commissioning and real-time data acquisition.
Plasma control
Advanced plasma control systems combining physics-based modeling, reinforcement learning, and real device experience at DIII-D and other tokamaks.
Partners & Collaborators
Get in Touch
Whether you're exploring a collaboration, planning a new device, or looking for a quote — we'd like to hear from you.
Contact information
Email
[email protected]
Address
33 Rue Du Puits Romain
L-8070 Bertrange
Luxembourg