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Colin Judge: Testing structural materials in Idaho’s newest hot cell facility
Idaho National Laboratory’s newest facility—the Sample Preparation Laboratory (SPL)—sits across the road from the Hot Fuel Examination Facility (HFEF), which started operating in 1975. SPL will host the first new hot cells at INL’s Materials and Fuels Complex (MFC) in 50 years, giving INL researchers and partners new flexibility to test the structural properties of irradiated materials fresh from the Advanced Test Reactor (ATR) or from a partner’s facility.
Materials meant to withstand extreme conditions in fission or fusion power plants must be tested under similar conditions and pushed past their breaking points so performance and limitations can be understood and improved. Once irradiated, materials samples can be cut down to size in SPL and packaged for testing in other facilities at INL or other national laboratories, commercial labs, or universities. But they can also be subjected to extreme thermal or corrosive conditions and mechanical testing right in SPL, explains Colin Judge, who, as INL’s division director for nuclear materials performance, oversees SPL and other facilities at the MFC.
SPL won’t go “hot” until January 2026, but Judge spoke with NN staff writer Susan Gallier about its capabilities as his team was moving instruments into the new facility.
T. Saito, Y. Tatematsu, Y. Imaizumi, E. Tsuda, T. Yasuoka, M. Ichimura, K. Ishii, I. Katanuma, K. Yatsu
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 167-171
Transport and Confinement | doi.org/10.13182/FST03-A11963586
Articles are hosted by Taylor and Francis Online.
For understanding of the plug potential generation in a tandem mirror, the potential structure of the whole plasma should be investigated. In particular, the potential structure from the plug-barrier cell to the end plate installed on the end wall of the vacuum vessel has physical import. The fundamental ECRH at the plug region generates an electromotive force by driving the axial flow of electrons. This electromotive force is divided into the positive plug potential and the negative end plate potential. This paper shows the variations of these potential with currents flowing through each region. The end plate potential increases with this current. Analysis of a current carrying sheath is applied to the end plate potential. The plug potential decreases with a radial ion current in the peripheral region of the plug-barrier cell. To illustrate this point, a plasma shot with NBI is examined in which a trapped plasma is generated in the cell.
