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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.
Akira Hasegawa, Liu Chen, Michael E. Mauel, Harry H. Warren, Sadayoshi Murakami
Fusion Science and Technology | Volume 22 | Number 1 | August 1992 | Pages 27-34
Technical Paper | D-3He/Fusion Reactor | doi.org/10.13182/FST92-A30050
Articles are hosted by Taylor and Francis Online.
An ideal magnetic container for a D-3He fusion reactor must ensure both the stability of the confined plasma and the ability to control the confinement of fusion products. A dipole magnetic field may be suitable for D-3He fusion since it is predicted to be able to confine high-beta plasmas while allowing extraction of the high-energy charged fusion products for direct conversion as well as removal of fusion ash using resonant and / or nonresonant static magnetic perturbations. In a dipole magnetic field, even an equilibrium plasma having a phase-space density satisfying , where ψ is the flux function, has a steep enough pressure prof He for high fusion reactivity within the core yet is stable to low-frequency instabilities for local beta exceeding unity. At the outer wall, the plasma density and temperature can be very low, and stability can be obtained by line-tying or localized magnetic cusps, which can be used for direct conversion. New calculations of fusion product control and plasma stability with isotropic pitch-angle distributions are described. In addition, the parameters of a new, higher field dipole reactor design are discussed.