en.Wedoany.com Reported - Xcimer Energy announced that the U.S. Department of Energy (DOE) has officially approved the pre-conceptual design and technology development roadmap milestones for its fusion power plant architecture, Athena.
Athena is the reference architecture for Xcimer's fusion power plant series, integrating the company's proprietary excimer laser platform with target delivery, fusion chamber, tritium breeding, and power generation systems. Xcimer stated that these systems "were designed for industrial scale from the start." Company CEO and Chief Science Officer Conner Galloway noted that the challenge for laser fusion is no longer whether physics is feasible, but the speed of industrialization. DOE's recognition of Athena reflects the strength of the technical approach and the execution capability of its commercialization roadmap.
The previous week, Xcimer announced that its prototype laser system, Phoenix, had become operational. Located in Xcimer's 74,000-square-foot Denver laser facility, Phoenix is a krypton fluoride (KrF) excimer laser that uses stimulated Brillouin scattering (SBS) to compress microsecond pulses to nanosecond duration, designed to demonstrate end-to-end integrated operation of excimer amplification and SBS pulse compression.
Xcimer believes that long-term economics, maintainability, fuel cycle costs, and reliability will ultimately determine the commercially successful fusion architecture. Susana Reyes, Vice President of Chamber and Plant Design, stated that Athena will operate continuously at a repetition rate of up to 1 Hz and use a liquid wall chamber to maximize availability by protecting solid structures from fusion reaction emissions throughout the plant's lifetime. The molten salt curtain can absorb and mitigate flux, breed fuel, and remove heat, and because it continuously flows, it constantly renews itself. Athena was designed around this characteristic from day one, determining material selection, thermal management, maintenance philosophy, and economics.
DOE's recognition is based on Xcimer's completion of early milestones within the first 18-month budget period of the project. The next phase includes full-scale subsystem testing, engineering validation, and preparation for an integrated power plant demonstration. The milestone-based fusion development program is part of DOE's efforts to accelerate fusion energy commercialization through public-private partnerships, with Xcimer being one of the companies exploring different technical pathways to achieve commercially viable fusion power generation.
In 2023, Xcimer was selected by DOE as a member of all three centers in a $42 million program that established multi-institutional, multidisciplinary centers within the Inertial Fusion Energy Science and Technology Accelerated Research (IFE-STAR) domain, bringing together expertise from DOE national laboratories, academia, and industry. Inertial confinement fusion uses lasers or other technologies to compress and heat high-density plasma. On December 5, 2022, the National Ignition Facility at Lawrence Livermore National Laboratory achieved scientific breakeven, releasing more energy from fusion than the energy of the drive lasers, a result that researchers have since replicated multiple times. The IFE-STAR program aims to continue advancing development by addressing priority research opportunities outlined in the IFE Basic Research Needs Workshop report and bridging common science and technology gaps in the technology roadmaps of IFE fusion companies participating in the Office of Science's milestone-based fusion development program.
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