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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.
Kiyoshi Yatsu, Teruji Cho, Hiroyuki Higaki, Mafumi Hirata, Hitoshi Hojo, Makoto Ichimura, Kameo Ishii, Yuki Ishimoto, Mohamed K. Islam, Akiyoshi Itakura, Isao Katanuma, Junko Kohagura, Yousuke Nakashima, Teruo Saito, Yoshinori Tatematsu, Masayuki Yoshikawa
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 10-15
Overview | doi.org/10.13182/FST03-A11963556
Articles are hosted by Taylor and Francis Online.
After the attainment of the density doubling due to the potential confinement in 1998, GAMMA 10 experiments have been directed to realization of a high density plasma with potential confinement and also to study dependencies between plasma parameters. These studies are important for understanding of the physics of potential formation in tandem mirrors and also for the development of a tandem mirror reactor. GAMMA 10 experiments have advanced after the last OS2000 Conference where we reported high density plasma production by using an ion cyclotron range of frequency (ICRF) heating at high harmonic frequency and a neutral beam injection in the anchor cell. However, the diamagnetic signal of the high density plasma decreased with application of ECRH. Recently a high density plasma was attained without degradation of the diamagnetic signal, which was attained by adjusting the spacing of the conducting plates installed in the anchor transition regions. Dependencies of particle and energy confinement times and plasma confining potential on the density up to a density of 4×1012 cm−3 are studied for the first time in the high density region.
