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North American construction is back—smaller and faster—at OPG’s Darlington
“The nuclear renaissance is real here,” said Ontario Power Generation’s Subo Sinnathamby on May 8, one year to the day after OPG secured a final investment decision to build the first of four planned BWRX-300 reactors at its Darlington nuclear power plant, and shortly after the new reactor’s foundation was lifted into place. “We got our license to construct in April and our [final investment decision] in May, and we’ve been off to the races since.”
Xiang Gao
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 477-480
Confinement and Transport Studies | doi.org/10.13182/FST95-A11947132
Articles are hosted by Taylor and Francis Online.
An improved confinement has been observed on HT-6M tokamak after application of Edge Ohmic Heating (EOH) which makes plasma current rapidly ramp up from an initial steady state (Ip=55 kA) within a small time scale (0.4 ms) to a second steady state (Ip=60 kA) with a ramp rate of 12 MA/sec. The improved confinement is characterized by (a) increased average density ne; (b) reduced Hα radiation; (c) reduced density fluctuations both in the center and at the edge; (d) a steeper ne and Te profile at the edge; (e) the changed profiles of plasma parameters ne(r), q(r) and j(r); (f) transferred the oscillation modes of the soft-X ray signals from Mirnov fluctuation (12 kHz) to sawtooth oscillation (1.7 kHz). The changes of edge fluctuation, radial electric field and bremsstrahlung during EOH were measured and discussed in details. The measured values of βp+1i/2 and soft-X ray sawtooth inversion radius implied the anomalous current penetration.
