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Latest News
Tank waste operations resume at Idaho’s IWTU
The Department of Energy’s Office of Environmental Management announced yesterday that waste processing operations have resumed at the Integrated Waste Treatment Unit (IWTU) at the Idaho National Laboratory Site. The resumption of operations follows the completion of two maintenance campaigns at the radioactive liquid waste treatment facility.
Alexander Mlynek, Gabriella Pautasso, Marc Maraschek, Horst Eixenberger, ASDEX Upgrade Team
Fusion Science and Technology | Volume 61 | Number 4 | May 2012 | Pages 290-300
Technical Paper | doi.org/10.13182/FST12-A13582
Articles are hosted by Taylor and Francis Online.
In this paper, we describe recent measurements with the ASDEX Upgrade two-color CO2/HeNe interferometer in which a time resolution of 200 ns was obtained in the density measurement by digitizing the 40-MHz raw signals of the interferometer at 500 million samples/s and performing density reconstruction by software. It is illustrated that this high resolution is beneficial during massive gas injection for disruption mitigation, as it allows for the discovery of fast density oscillations in the frequency range from 200 kHz to [approximately]1 MHz, which shows clear correlation to magnetic measurements.