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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
Shifting the paradigm of supply chain
Chad Wolf
When I began my nuclear career, I was coached up in the nuclear energy culture of the day to “run silent, run deep,” a mindset rooted in the U.S. Navy’s submarine philosophy. That was the norm—until Fukushima.
The nuclear renaissance that many had envisioned hit a wall. The focus shifted from expansion to survival. Many utility communications efforts pivoted from silence to broadcast, showcasing nuclear energy’s elegance and reliability. Nevertheless, despite being clean baseload 24/7 power that delivered a 90 percent capacity factor or higher, nuclear energy was painted as risky and expensive (alongside energy policies and incentives that favored renewables).
Economics became a driving force threatening to shutter nuclear power. The Delivering the Nuclear Promise initiative launched in 2015 challenged the industry to sustain high performance yet cut costs by up to 30 percent.
D. Rapisarda, B. Zurro, V. Tribaldos, A. Baciero, TJ-II Team
Fusion Science and Technology | Volume 50 | Number 2 | August 2006 | Pages 320-325
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1253
Articles are hosted by Taylor and Francis Online.
A local model capable of simulating the cord-integrated emission of spectral lines in the TJ-II stellarator has been developed for inferring local parameters. The procedure was implemented on a numerical code, which starting from given analytical profiles of local emissivity, ion temperature, and toroidal rotation calculates the cord-integrated emission spectra along a selected line of sight. Additionally, the procedure is capable of simulating the toroidal and poloidal velocity contributions for a selected spectral line taking into account TJ-II magnetic topology. Results show good agreement between measurements and numerical simulations for the integrated intensity and ion temperature, and a consistent integrated toroidal rotation velocity, which depends on the emissivity profile.
