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Chernobyl at 40 years: Looking back at Nuclear News
Sunday, April 26, at 1:23 a.m. local time will mark 40 years since the most severe nuclear accident in history: the meltdown of Unit 4 at the Chernobyl nuclear power plant in Ukraine, then part of the Soviet Union.
In the ensuing four decades, countless books, documentaries, articles, and conference sessions have examined Chernobyl’s history and impact from various angles. There is a similar abundance of outlooks in the archives of Nuclear News, where hundreds of scientists, advocates, critics, and politicians have shared their thoughts on Chernobyl over the years. Today, we will take a look at some highlights from the pages of NN to see how the story of Chernobyl evolved over the decades.
Arnold Lumsdaine, Joseph B. Tipton, Jr., Dennis Youchison, Venu Varma, Kirby Logan, Juergen Rapp
Fusion Science and Technology | Volume 75 | Number 7 | October 2019 | Pages 674-682
Technical Paper | doi.org/10.1080/15361055.2019.1637239
Articles are hosted by Taylor and Francis Online.
The Material Plasma Exposure eXperiment (MPEX) steady-state linear plasma facility is currently under design at Oak Ridge National Laboratory. The facility proposes to produce ITER divertor-relevant plasma conditions with steady-state heat fluxes up to 10 MW/m2 with ion fluxes up to 1024/m2‧s. Plasmas will be produced from a helicon source with additional electron cyclotron and ion cyclotron heating, contained by superconducting magnets. MPEX will be capable of including targets that have been neutron irradiated from the High Flux Isotope Reactor (HFIR) in order to examine the effects of divertor-relevant plasma fluence on neutron-damaged materials. Targets can then be remotely transferred to an exchange chamber and moved into a handling station that is far from the MPEX magnets. Because of the high heat fluxes, the target must be actively cooled. Because the targets are activated, remote handling is required. The challenge of providing both active cooling and remote handling simultaneously has required a design and analysis effort that is the subject of this study.