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Latest News
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.
Lajos L. Lengyel
Fusion Science and Technology | Volume 10 | Number 3 | November 1986 | Pages 354-363
Technical Paper | Plasma Engineering | doi.org/10.13182/FST86-A24776
Articles are hosted by Taylor and Francis Online.
Results of ignition and continuous fueling scenario calculations are presented that were obtained in the framework of an assessment performed f or the Next European Torus based on International Tokamak Reactor (INTOR) parameters. The results obtained with pellet injection are compared with results corresponding to gas puffing. Pellet injection transports fresh fuel to the reaction zone on a time scale that is much shorter than the diffusion time characterizing the gas puffing method, thus making the method flexible and readily adaptable to different situations. In the case of ignition by pellet injection, it may become possible to have deep neutral beam penetration and maintain favorable heat deposition profiles up to the moment of density ramp-up, thus substantially relaxing beam output requirements. Three beam energies (D0particles) have been considered: 120, 100, and 80 keV. The importance of a proper match between beam characteristics and pellet parameters, specific for the transport scaling assumed (Alcator-INTOR), is shown. In the case of continuous fueling o f an already ignited discharge, the alpha power production notably increases if repetitive pellet injection, instead of gas puffing, is applied. The advantages of pellet injection are substantial, even at moderate pellet velocities.