KSTAR Magnetic Field Measurement During the Commissioning and Remanent Field Evaluation

被引：4

作者：

Yonekawa, Hirofumi ^{[1
]}

Kim, Y. O. ^{[1
]}

Lee, Hyun Jung ^{[1
]}

Yoon, S. W. ^{[1
]}

Hahn, S. H. ^{[1
]}

Lee, K. S. ^{[1
]}

Lee, D. K. ^{[1
]}

Park, Soo Hwan ^{[1
]}

Chu, Yong ^{[1
]}

Bang, E. N. ^{[1
]}

Park, K. R. ^{[1
]}

Oh, Y. K. ^{[1
]}

Bak, J. S. ^{[1
]}

Leuer, J. A. ^{[2
]}

机构：

[1] Natl Fus Res Inst, Taejon 305333, South Korea

[2] Gen Atom Co, San Diego, CA USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期

关键词：

Incoloy; 908; Nb3Sn; remanent magnetic field; superconducting magnet coil; CS MODEL COIL;

D O I：

10.1109/TASC.2009.2018486

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An in-situ measurement of the magnetic field generated by the assembled superconducting magnet coils was held by using precision Hall sensors during the commissioning of the Korea Superconducting Tokamak Advanced Research ( KSTAR) device. This was done in order to investigate the magnetic influence of Incoloy 908, which is the jacket material for the cable-in-conduit conductors (CICCs) of the Nb3Sn coils. After the PF coils were discharged from 1 kA the vertical remanent field at the plasma center was more than 10 G, while the TF coils were not energized. The vertical magnetic field generated by the PF coils had a discrepancy of up to 50 G between measurement and the calculation assuming no magnetic influence of Incoloy 908. Thus, non-negligible ferromagnetism was identified and attributed to Incoloy 908. In contrast, most of the hysteresis observed in the magnetic measurements was eliminated when the Incoloy 908 of the TF windings was saturated by the TF coil charging.

引用

页码：1573 / 1576

页数：4

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