Xcimer Energy Advances Laser Fusion with OMEGA Facility Tests

Xcimer Energy, global industry experts in laser-driven fusion and high-energy photonics systems, has completed a series of experimental shots at the University of Rochester’s Laboratory for Laser Energetics, a leading U.S. research facility in high-energy-density physics. The work advances validation of the company’s approach to inertial fusion energy.

The experiments were conducted at the OMEGA Laser Facility at the University of Rochester as part of a National Laser Users’ Facility campaign supported by the U.S. Department of Energy. The work focused on externally driven halfraums, or half-hohlraums, as part of early validation of Xcimer’s two-beam laser fusion architecture.

The OMEGA Laser Facility, located at the University of Rochester in New York, is one of the world’s premier research centers for high-energy-density physics and laser-driven fusion science.

Because the OMEGA facility cannot replicate the full beam shaping and optical configuration required for Xcimer’s final system design, the experimental setup used repointed laser beams directed onto outer baffles of the halfraum geometry. This approach enabled researchers to approximate the laser–target coupling conditions being developed for Xcimer’s fusion system.

Halfraums constructed from copper, gold, and lead were tested, with measurements of radiation temperature and shock velocity used to inform radiation-hydrodynamics models. These models are critical for the design of fusion targets, laser systems, and reaction chambers at larger scales.

“The goal of this campaign was to generate experimental data that directly informs our hohlraum design work,” said Alison Christopherson, Head of Target Design at Xcimer. “This data provides the validation required for system-level confidence as we scale from individual experiments toward an integrated fusion energy system.”

The resulting data will be shared with partner institutions and used to refine Xcimer’s internal modeling capabilities. Validated models are essential for designing systems capable of supporting a commercial fusion pilot plant.

The halfraums used in the experiments were fabricated by General Atomics, supporting Xcimer’s broader efforts in target factory development. The work was conducted in collaboration with the Laboratory for Laser Energetics, Los Alamos National Laboratory, and the Polytechnical University of Madrid.

These experiments contribute to Xcimer’s staged development roadmap toward a Fusion Pilot Plant. The roadmap includes multiple dedicated facilities designed to progressively validate system components and integration.

The Phoenix system, currently nearing completion, is intended to validate gas-optics elements and beam shaping at high fluence. The Anvil system will use a two-sided 200 kJ target-shooter configuration to demonstrate integrated laser performance and laser–target coupling. The Vulcan facility, a planned 12 MJ-class system, is designed to demonstrate wall-plug breakeven and address remaining plasma performance challenges.

In parallel with the experimental campaign, Xcimer’s engineering team participated in facility operations and shot execution, gaining insight into system scalability, operability, and integration requirements for future facilities.

“These shots represent the kind of disciplined experimental validation required to turn laser fusion into an engineered energy system,” said Conner Galloway, co-founder and CEO of Xcimer Energy. “Laser fusion is the only approach that has demonstrated scientific breakeven. The question now is whether it can be engineered into something scalable and reliable. Every dataset like this helps derisk that path—by grounding our models in experiment, tightening our designs, and showing that the physics holds as we move toward practical systems.”

Laser-driven inertial fusion remains the only fusion approach to have demonstrated scientific breakeven under laboratory conditions. Xcimer’s approach focuses on translating that milestone into a repeatable and economically viable energy system through advances in laser architecture and system integration.

About Xcimer Energy Inc.

Xcimer Energy develops laser-based fusion systems designed to enable scalable, clean energy generation. Founded in 2022 and headquartered in Denver, Colorado, the company combines advanced laser technologies with validated inertial fusion science to support the development of commercial fusion energy systems. For more information, please click here.

Source: Xcimer Energy

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