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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.
J. A. Koch, T. P. Bernat, G. W. Collins, B. A. Hammel, B. J. Kozioziemski, A. J. MacKinnon, J. D. Sater, D. N. Bittner, Y. Lee
Fusion Science and Technology | Volume 38 | Number 1 | July 2000 | Pages 123-131
Technical Paper | Thirteenth Target Fabrication Specialists’ Meeting | doi.org/10.13182/FST00-A36128
Articles are hosted by Taylor and Francis Online.
We have developed a numerical raytrace model, SHELL3D, which simulates the backlit imaging of cryogenic inertial-confinement fusion (ICF) ignition capsules in three dimensions. We have used this model to investigate the limitations of backlit shadowgraphy as a diagnostic of hydrogen ice surface quality inside the capsules. We impose known modal perturbations upon the simulated inner ice surface, and produce simulated shadowgraphs which are then analyzed as if they were real experimental data. We find that power spectra derived from backlit shadowgraphs appear to be reliable indicators of ice surface power spectra out to Fourier mode numbers as high as 80. We also suggest that some advantages may be obtained by using a collimated backlight, and possibly by utilizing backlit transmission interferometry. These results support the conclusion that backlit shadowgraphy is a valid quantitative diagnostic of lower-mode ice surface imperfections inside transparent spherical ICF shells.
