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Torii, Tatsuo; Sugita, Takeshi*; Okada, C. E.*; Reed, M. S.*; Blumenthal, D. J.*
Health Physics, 105(2), p.192 - 200, 2013/08
Times Cited Count:49 Percentile:96.53(Environmental Sciences)In March 2011 the second largest accidental release of radioactivity in history occurred at the Fukushima Daiichi Nuclear Power Plant following a magnitude 9.0 earthquake and subsequent tsunami. Teams from the US Department of Energy National Nuclear Security Administration Office of Emergency Response performed aerial surveys to provide initial maps of the dispersal of radioactive material in Japan. The initial results from the surveys did not report the concentration of iodine-131 (I). This work reports on analyses performed on the initial survey data by a joint Japan-US collaboration to determine I ground concentration. As a result of this analysis, although the analytical results show a high concentration of I northwest of the NPP, consistent with the previously reported radioactive cesium (Cs and Cs) deposition, the I deposition shows a significant concentration south of the plant which is not represented in the radioactive cesium map.
Libeyre, P.*; Bessette, D.*; Jewell, M.*; Jong, C.*; Lyraud, C.*; Rodriguez-Mateos, M.*; Hamada, Kazuya; Reiersen, W.*; Martovetsky, N.*; Rey, C.*; et al.
IEEE Transactions on Applied Superconductivity, 22(3), p.4201104_1 - 4201104_4, 2012/06
Times Cited Count:7 Percentile:41.4(Engineering, Electrical & Electronic)The Central Solenoid (CS) of the ITER magnet system will play a major role in tokamak operation, providing not only the major part of the inductive flux variation required to drive the plasma but also contributing to the shaping of the field lines and to vertical stability control. To meet these requirements, the design has been optimised by splitting the CS into six independently powered coils enclosed inside an external structure which provides vertical precompression thus preventing separation of the coils and, additionally, acting as a support to net resulting loads. To ensure that the CS design meets the ITER criteria, several analyses are performed along with a series of R&D trials to qualify the technologies to be used for the manufacture of the conductor, the coils and the structure.
Torii, Tatsuo; Sugita, Takeshi*; Okada, C.*; Reed, M. S.*; Blumenthal, D. J.*
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