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Fusion Science and Technology
NRC schedules webinars on Holtec’s proposed New Mexico storage site
The Nuclear Regulatory Commission has scheduled four webinars in late August and early September to present its draft environmental findings and receive comments on Holtec International’s proposed consolidated spent nuclear fuel storage facility in New Mexico. Webinars were previously held on June 23 and July 9.
As published in the August 13 Federal Register, the public comment webinars will be held on August 20 from 6–9 p.m., August 25 from 2–5 p.m., August 26 from 6–9 p.m., and September 2 from 11 a.m.–2 p.m. All times are Eastern. Information for the webinars is posted on the NRC’s Public Meetings webpage.
M. Hirata, S. Nagashima, T. Cho, J. Kohagura, M. Yoshida, H. Ito, S. Tokioka, T. Numakura, R. Minami, Y. Nakashima, T. Kondoh, K. Yatsu, S. Miyoshi
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 262-264
Diagnostics | dx.doi.org/10.13182/FST03-A11963608
Articles are hosted by Taylor and Francis Online.
For the purpose of observations of the absolute values of ion-end-loss currents in open-field plasma devices including the GAMMA 10 tandem mirror, a newly developed electrostatic ion-current detector is proposed on the basis of a “self-collection” principle for secondary-electron emission from a metal collector. The newly developed ion-current detector is constructed with a set of parallelly placed metal plates with respect to lines of ambient magnetic forces in an open-ended device. One of the most essential characteristic properties of the proposed detector is based on the physics principle of a “self-collection” mechanism due to E×B drifts for secondary electrons impinged by ion-current collections from the metal-plate collector; that is, the secondary electrons are returned back into the collector through E×B drifts by the use of no further additional magnetic systems except the ambient open-ended fields B. The proposed idea is tested in an ion-beam line along with an additional set of the Helmholtz coil for producing and mocking up open-ended fields for simulating the GAMMA10 magnetic fields. The characterization experimental data in the ion-beam line give good agreement with computer-simulated trajectory-calculation results. The novel ion-current detector is preliminarily and usefully applied to the GAMMA10 plasma experiments.