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Fusion Science and Technology
House Dems introduce clean energy bill for net zero
Democratic leaders in the House last week introduced the Climate Leadership and Environmental Action for our Nation’s Future Act (the CLEAN Future Act, or H.R. 1512), a nearly 1,000-page piece of climate change–focused legislation establishing, among other things, a federal clean electricity standard that targets a 50 percent reduction in greenhouse gas emissions from 2005 levels by 2030 and net-zero emissions by 2050.
The bill, a draft version of which was released in January 2020, presents a sweeping set of policy proposals, both sector-specific and economy-wide, to meet those targets. The final version includes a number of significant revisions to bring the legislation into closer alignment with President Biden’s climate policy campaign pledges. For example, the bill’s clean electricity standard would require all retail electricity suppliers to provide 80 percent clean energy to consumers by 2030 and 100 percent by 2035. (A six-page fact sheet detailing the updates is available online.)
R. R. Weynants, S. Jachmich, M. Van Schoor
Fusion Science and Technology | Volume 47 | Number 2 | February 2005 | Pages 202-208
Technical Paper | TEXTOR: Radiation Cooling and Confinement | dx.doi.org/10.13182/FST05-A700
Articles are hosted by Taylor and Francis Online.
The application in TEXTOR of an externally controlled radial electric field Er, imposed by means of an electrode, has allowed to ascertain many aspects of the physics of the creation of Er and of its effect on radial transport. Radial conductivity was shown to depend on parallel viscosity with the latter's nonlinear response to Er providing the basic ingredient for Er bifurcation, typical for L- to H-mode transitions. Simultaneous time and space resolved measurements of Er and of the plasma flows in the edge by means of a newly developed inclined Mach probe have allowed to further substantiate the role of parallel viscosity and of neutral collisions in the damping of rotation. The causal role of grad Er in bringing about the transport changes has been proven by showing that the field shear is spatially correlated with and temporally leads the density gradient, as well as by comparison with theoretical modeling.