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Fusion Science and Technology
DOE renews Portsmouth grant to Ohio University
The Department of Energy’s Office of Environmental Management has renewed a $2.5 million grant to Ohio University to support community redevelopment around the DOE’s Portsmouth Site. Since 2016, the DOE has provided a total of $8.2 million to the university for work with the communities.
The DOE grant, which began on October 1, will be administered over five years through September 30, 2027. A previous grant expired on September 30.
Erzhong Li, H. Zhao, X. Liu, T. Zhou, Q. Cao, A. Ti, Y. Liu, L. Hu
Fusion Science and Technology | Volume 75 | Number 1 | January 2019 | Pages 67-74
Technical Paper | dx.doi.org/10.1080/15361055.2018.1499394
Articles are hosted by Taylor and Francis Online.
This work is motivated by the measurement of electron dynamics during edge-localized modes (ELMs) which is observed as electron cyclotron emission (ECE) bursts at edge. Considering a small optical thickness for both background and energetic electrons at the edge, detailed physical design and analysis of the ECE spectrum have been done when energetic electrons are considered at edge as in this technical note. The assembly of a portable eight-channel heterodyne radiometer is based on the building-block idea to conveniently adjust radio frequency components to suit for tokamak toroidal fields. Tests were performed in the 2016 Fiscal Year Campaign of Experimental Advanced Superconducting Tokamak (EAST) for demonstrating the ability of the system. Specifically, the bursting ECE in combination with the calculated spectrums indicates that the energetic electrons survive in the pedestal region and shift outward during the growing phase of an ELM.