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G7 pledges support for nuclear at Italy meeting
The Group of Seven (G7) recommitted its support for nuclear energy in the countries that opt to use it at a Ministerial Meeting on Climate in Italy last month.
In a statement following the April meeting, the group committed to support multilateral efforts to strengthen the resilience of nuclear supply chains, referencing the goal set by 25 countries during last year’s COP28 climate conference in Dubai to triple global nuclear generating capacity by 2050.
G. Granucci, A. Airoldi, E. Barbato, A. Bruschi, A. Cardinali, C. Castaldo, R. Cesario, S. Cirant, B. Esposito, D. Farina, F. Gandini, G. Giruzzi, C. Gormezano, M. Leigheb, M. Marinucci, F. Mirizzi, S. Nowak, L. Panaccione, V. Pericoli-Ridolfini, S. Podda, G. Ramponi, G. L. Ravera, A. N. Saveliev, A. Simonetto, C. Sozzi, A. A. Tuccillo, F. Zonca
Fusion Science and Technology | Volume 45 | Number 3 | May 2004 | Pages 387-401
Technical Paper | Frascati Tokamak Upgrade (FTU) | doi.org/10.13182/FST04-A521
Articles are hosted by Taylor and Francis Online.
This chapter reports the main physics results obtained with three radio-frequency-injection systems. The frequency of 8 GHz for the lower hybrid (LH) current drive (CD) (LHCD) system was chosen to explore CD at high density: full CD has been demonstrated for central densities up to 1.4 × 1020 m-3 at 0.5 MA with an applied power up to 2.0 MW. The Frascati Tokamak Upgrade (FTU) database shows CD efficiencies from 0.1 to 0.3 × 1020 AW-1 m-2. In combined experiments with electron cyclotron (EC) waves (140 GHz, up to 1.2 MW), a suprathermal absorption by the fast electron tail generated by LHCD has been observed in both downshifted and upshifted interaction regimes, with the resulting electron cyclotron current drive (ECCD) ranging from 20 to 100 kA, depending on experimental conditions. With pure EC resonance heating, the narrowness of the radial power deposition profile has been exploited, resulting in strong local electron heating. Results in high-density regimes are also presented. The third system (433 MHz, 0.5 MW) is the first to test ion Bernstein wave (IBW) coupling with a waveguide antenna. The experiment operates at high frequency, avoiding the occurrence of nonlinear phenomena at the edge. Improved confinement regimes resulting in a central peaking of the pressure profiles have been achieved with PIBW up to 0.4 MW. Modeling and experimental results are summarized.