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Nuclear

[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

MIT team proposes ARC fusion reactor: affordable, robust, compact

August 10, 2015

Advances in magnet technology have enabled researchers at MIT to propose a new design for a practical compact tokamak fusion reactor that might be realized in as little as a decade: the ARC (affordable, robust, compact) reactor. The stronger magnetic field makes it possible to produce the required magnetic confinement of the superhot plasma—the working material of a fusion reaction—but in a much smaller device than those previously envisioned.

The reduction in size, in turn, makes the whole system less expensive and faster to build, and also allows for some ingenious new features in the power plant design. The proposed tokamak (donut-shaped) reactor is designed to have 500 MW fusion power at 3.3 m major radius and is described in a paper in the journal Fusion Engineering and Design.

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DOE to award up to $80M to two advanced nuclear reactor projects

August 01, 2015

The US Department of Energy (DOE) issued a funding opportunity announcement (DE-FOA-0001313) to support the research, development, and demonstration of advanced nuclear reactor concepts. The announcement represents an early step in increasing investment in nuclear advanced reactor technologies, the DOE said.

DOE will partner with industry to fund up to two awards of approximately $6.0 million each in FY 2015. The Energy Department will invest up to $3.6 million in each project, with a federally funded research and development center (FFRDC) providing up to an additional $2.4 million. Recipients will be required to invest $1.5 million as part of the cost share. The funding opportunity allows for multiple-year funding for up to two awards with a total of $40 million in DOE cost share per award.

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ORNL and Shanghai Institute of Applied Physics in CRADA for development of fluoride salt-cooled high-temp reactors

March 19, 2015

Oak Ridge National Laboratory and the Shanghai Institute of Applied Physics (SINAP) are engaged in a Cooperative Research and Development Agreement (CRADA) focused on accelerating scientific understanding and technical development of salt-cooled reactors, specifically fluoride salt-cooled high-temperature reactors (FHRs). The project will draw on ORNL’s expertise in fuels, materials, instrumentation and controls, design concepts, and modeling and simulation for advanced reactors, as well as the lab’s experience in the design, construction and operation of the Molten Salt Reactor Experiment, the only molten salt reactor ever built. (Design began in 1960, construction started early in 1962. The 7.4 MWth test reactor operated successfully from 1965 to 1969.)

Representatives from the Oak Ridge National Laboratory (ORNL) and the Shanghai Institute of Applied Physics (SINAP) are meeting at ORNL this week; SINAP staff members will describe their plans for building the first salt-cooled test reactor, and the two sides will begin planning the next steps in the shared research project.

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Month-long study finds heat released by Rossi E-Cat and isotope changes in fuel suggest low-temp nuclear reaction taking place

October 09, 2014

Researchers from Uppsala University, KTH and the University of Bologna have reported that during a 32-day test, an “E-Cat” reactor developed by Andrea Rossi (earlier post) released an abundance of heat that cannot be explained by chemical reactions alone. They further reported that isotope changes in the analyzed fuel (lithium and nickel) indicate that nuclear reactions might have occurred at low temperatures.

Testing by the same group of researchers of the Rossi device in 2013 resulted in computed volumetric and gravimetric energy densities far above those of any known chemical source. (Earlier post.) Those results prompted this current follow-on study.

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Sandia team reports significant output from MagLIF fusion technique

September 23, 2014

Researchers at Sandia National Laboratories’ Z pulsed-power accelerator have produced a significant output of fusion neutrons, using a method fully functioning for only little more than a year. The experimental work is described in a paper to be published 24 September in Physical Review Letters online. A companion theoretical paper helps explain why the experimental method worked. The combined work demonstrates the viability of the novel approach.

Sandia senior manager Dan Sinars expects the MagLIF (Magnetized Liner Inertial Fusion) technique will be a key piece of Sandia’s submission for a July 2015 National Nuclear Security Administration review of the national Inertial Confinement Fusion Program.

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