<P><B>Abstract</B></P> <P>Operation stability study for a large-scale superconducting magnet is of particular importance to protect the magnet from permanent damage. Especially, for a fusion magnet, severe heat load by A...
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https://www.riss.kr/link?id=A107519797
2017
-
SCI,SCIE,SCOPUS
학술저널
165-170(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>Operation stability study for a large-scale superconducting magnet is of particular importance to protect the magnet from permanent damage. Especially, for a fusion magnet, severe heat load by A...
<P><B>Abstract</B></P> <P>Operation stability study for a large-scale superconducting magnet is of particular importance to protect the magnet from permanent damage. Especially, for a fusion magnet, severe heat load by AC loss needs to be effectively removed during operation to achieve required temperature margin. A unique feature of KSTAR PF (poloidal field) magnet is that all the supercritical helium inlets and outlets of PF1∼4UL (PF upper and lower) coils are located at high field region. Therefore, major heat loads are localized both at the inlets and outlets, so that a drastically reduced or even no temporal cryogen flow is frequently observed at the inlets of PF1∼4UL coils. This kind of temporal blockage of cryogenic loop can seriously affect the thermo-hydraulic analysis of a superconducting magnet system. As a preliminary study on this issue, we compared thermos-hydraulic analysis results of a simplified PF1UL model with a semi full scale PF1∼4UL model by using the SUPERMAGNET code. The numerical simulations were also compared to empirical results.</P>