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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.
Kazunobu Nagasaki, Sakuji Kobayashi, Kinzo Sakamoto, Hideki Zushi, Tokuhiro Obiki, Kunizo Ohkubo, Minoru Kawaguchi, Gregory G. Denisov, Arkady L. Goldenberg, Vadim I. Kurbatov, Viktor B. Orlov, Dmitry V. Vinogradov
Fusion Science and Technology | Volume 32 | Number 2 | September 1997 | Pages 287-295
Technical Paper | Plasma Heating System | doi.org/10.13182/FST97-A19898
Articles are hosted by Taylor and Francis Online.
A 106-GHz electron cyclotron heating system is installed and operated for plasma production and heating of the Heliotron-E helical device. The Gaussian beam radiated from the gyrotron is coupled to the HE11 waveguide mode by the matching optics unit (MOU), then transmitted through 15-m corrugated waveguides and four miter bends. The system is closed for safety to prevent spurious modes from radiating into the free space and is operated at atmospheric pressure. The transmitted wave is launched from the outside of the torus, and the launched beam is focused on the magnetic axis so that the power deposition is expected to be localized at the desired resonance region. The measured transmission efficiency from the MOU output to the launcher output is 86%, which is in good agreement with the theoretical estimate. The power losses arise mainly at the waveguide mouth where the Gaussian beam is coupled to the HE11 mode, at the miter bends and in the launching system.
