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Fusion Science and Technology
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General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
T. J. Dolan, K. Yamazaki, A. Sagara
Fusion Science and Technology | Volume 47 | Number 1 | January 2005 | Pages 60-72
Technical Paper | doi.org/10.13182/FST05-A599
Articles are hosted by Taylor and Francis Online.
The Physics-Engineering-Cost (PEC) code has been updated to include blanket-shield design data, a new cost structure, new unit costs, and improved algorithms. It is used here to estimate component masses and costs for heliotron reactors, which have continuous helical coils like the Large Helical Device.Relative to a "base case," we study how the cost of electricity (COE) varies with various parameters: central electron temperature, coil width/depth ratio, plasma-coil distance, plasma profile shapes, beta, maximum magnetic field, neutron wall load, net power output, plasma impurity content, plasma aspect ratio, and blanket lifetime.The COE decreases strongly with increasing beta but tends to level out at beta values >6%. At a fixed output power, higher beta values make the reactor smaller, which decreases the energy confinement time, making ignition more difficult. The resulting COE estimates are compared with that of the Stellarator Power Plant Study.