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Bahrain signs a nuclear collaboration MOU with the U.S.
Less than a week after news broke of the U.S. entering into civil nuclear talks with Malaysia, the U.S. State Department announced that Secretary of State Marco Rubio and Bahrain’s Minister of Foreign Affairs Abdullatif bin Rashid Al Zayani have also signed a memorandum of understanding concerning civil nuclear cooperation.
Osamu Mitarai, Sigeru Sudo
Fusion Science and Technology | Volume 27 | Number 4 | July 1995 | Pages 377-388
Technical Paper | Plasma Engineering | doi.org/10.13182/FST95-A30358
Articles are hosted by Taylor and Francis Online.
Ignition characteristics in deuterium-tritium helical (stellarator) reactors of various sizes are studied with the operation path method on the plane and the POPCON method. Based on empirical large helical device scaling, confinement must be improved by a factor > 1.5 for reaching ignition and a factor >γH = 2 for optimum fusion power in a helical reactor with R > 8 m, ā = 2 m, and B0 > 6 T. The density limit and the confinement time saturation effect with respect to the density degrade the favorable density scaling of the confinement time (τE ∝ n0.69) and are found to be important limiting factors for ignition characteristics. For a reactor with R = 10 m, ā = 2 m, γH = 2, and B0 = 7 T and with an excess heating power Pex = 100 MW, the minimum auxiliary heating power is ∼55 MW at an operating density 40% below the density limit, and ignition can be reached in a finite time. The ignition characteristics for larger size reactors (R = 15 and 20 m) and gyro-reduced Bohm scaling are also studied.