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November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
IAEA again raises global nuclear power projections
Noting recent momentum behind nuclear power, the International Atomic Energy Agency has revised up its projections for the expansion of nuclear power, estimating that global nuclear operational capacity will more than double by 2050—reaching 2.6 times the 2024 level—with small modular reactors expected to play a pivotal role in this high-case scenario.
IAEA director general Rafael Mariano Grossi announced the new projections, contained in the annual report Energy, Electricity, and Nuclear Power Estimates for the Period up to 2050 at the 69th IAEA General Conference in Vienna.
In the report’s high-case scenario, nuclear electrical generating capacity is projected to increase to from 377 GW at the end of 2024 to 992 GW by 2050. In a low-case scenario, capacity rises 50 percent, compared with 2024, to 561 GW. SMRs are projected to account for 24 percent of the new capacity added in the high case and for 5 percent in the low case.
M. Sato, A. Isayama
Fusion Science and Technology | Volume 52 | Number 2 | August 2007 | Pages 169-175
Technical Paper | Electron Cyclotron Wave Physics, Technology, and Applications - Part 1 | doi.org/10.13182/FST07-A1496
Articles are hosted by Taylor and Francis Online.
Extended Trubnikov emissivity is evaluated to oblique propagation to the magnetic field in the spherically symmetric relativistic Maxwellian case. Using the extended Trubnikov expression, electron cyclotron emission (ECE) spectra and electron temperature profiles are calculated in a reactor-grade tokamak. We investigate the possibility of electron temperature profile Te(r) measurement from second-harmonic extraordinary (X)-mode ECE by changing the propagation direction. The observation angles all are scanned in solid angle to find out when the relativistic effects of the third-harmonic ECE on second- harmonic ECE decrease are minimal. The measurable Te from second-harmonic X-mode becomes high by increasing the angle between the propagation sight line and the equatorial plane because of the avoidance of the overlap region between the second and third harmonics, but the spatial resolution becomes worse. The antenna is not necessarily located around the equatorial plane. The second X-mode and the fundamental ordinary (O)-mode for the Te(r) measurement from ECE are best in the cases of Te(0) 24 keV and 24 keV Te(0) 50 keV, respectively. When the electron density, the magnetic field, and/or the inverse aspect ratio increase, the measurable Te decreases.
