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ANS Student Conference 2025
April 3–5, 2025
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Fusion Science and Technology
February 2025
Latest News
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 et al.
Fusion Science and Technology | Volume 47 | Number 1 | January 2005 | Pages 96-99
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST05-A615
Articles are hosted by Taylor and Francis Online.
In the GAMMA 10 tandem mirror device, an experimental plan of high power ECRH is now under way. As the first step, operation of existing gyrotrons for plug ECRH has been carried out at a power exceeding their nominal powers of 200 kW. In this step, the highest recorded value of [varphi]c for a hot ion mode plasma is 1.4 kV at Pplug = 240 kW. The effective temperature Teff of the end loss electrons as a scaling factor of the axial potential distribution has attained to 3 keV at a heating power of 260 kW and the potential difference between the plug to the end plate has exceeded 5 kV. Then, the potential range of the scaling between and Teff has been expanded. Use of a new gyrotron delivering much higher power is the second step. The first experimental campaign with this gyrotron has just started.
