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Division Spotlight
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Bin Chen, Jiangang Li, Yanlan Hu, Teng Wang, Chao Zhou
Fusion Science and Technology | Volume 76 | Number 2 | February 2020 | Pages 95-101
Technical Paper | doi.org/10.1080/15361055.2019.1690927
Articles are hosted by Taylor and Francis Online.
High-temperature superconductor (HTS) current leads are important components of the EAST and CFETR tokamaks, which are responsible for operating the high parametric current. HTS current leads are made of Bi-2223/Ag-Au alloy tapes, which have the characteristics of slow quench propagation speed and weak quench signal. Traditional thermometers are easily damaged by the high voltage from the current leads, and the terminal voltage signal cannot reflect the hot spot changes of current leads in real time. In this paper, a novel quench detection method based on optical frequency domain reflection technology is proposed. Temperature variations of HTS can be obtained in real time by demodulating the Rayleigh scattered spectrum from the distributed optical fiber attached to the surface of HTS stacks. This paper describes a quenching experiment for one pair of 1-kA small current leads. The external thermal disturbance is increased to explore the quench propagation of HTS current leads under the condition of a self-field, 77 to 80 K air and conduction combined cooling method. From the experimental results, the temperature distribution map of the whole HTS lead is obtained. Compared with the quench voltage, the spectral shift of the fiber appeared to be about 2 s ahead, and the hot spot position can be located with 1-cm accuracy.
