NDLI: Quench Analysis of the KSTAR TF Magnets and Bus Lines for the First Campaign

Content Provider	IEEE Xplore Digital Library
Author	Lee, H.J. Oh, D.K. Chu, Y. Park, Y.M. Park, S.H. Oh, Y.K.
Copyright Year	2002
Abstract	In the Korea Superconducting Tokamak Advanced Research (KSTAR) device, the Toroidal Field (TF) coils were manufactured with Nb₃Sn, and the bus lines with NbTi, and all the coils are cooled by supercritical helium. During the first campaign, the TF coils were operated with a steady state current of 15 kA. In case of a quench the conductor is being developed due to an unexpected effect on the superconducting strands, the current should be discharged into an external dump resistor for protection of the magnet. The development or recovery of the quench is related to the protection triggering delay time and the quench voltage. The thermo-hydraulic phenomena were simulated by the GANDALF code and the initial quench propagation condition was found from the minimum quench energy and the initial quench zone. In this paper, we determined the quench voltage level and trigger time by analysis of temperature, voltage, and pressure growth, in the magnet and bus lines, with triggering delays of t = 2 s, 3 s, 4 s, and 5 s, by analysing the effects of a temperature and voltage growth of the magnet and bus lines.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2399
Ending Page	2402
Page Count	4
File Size	437811
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic analysis Superconducting coils Voltage Superconducting magnets Protection Delay effects Temperature Tokamaks Manufacturing Niobium superconducting GANDALF KSTAR magnet quench
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Quench Detection Based on Voltage Measurement for the KSTAR Superconducting Coils

Estimation of Operational Stability for the KSTAR TF Magnet

Stability of Superconducting Magnet for KSTAR

Performance of the Quench Detection System for the KSTAR CS Magnet System

Development of CICC for KSTAR Superconducting Magnet System

Quench Simulation and Detection in KSTAR PF Magnet System

Development of CICC for KSTAR TF coil system

Analysis and Design of the CMS Magnet Quench Protection

Jacketing and repair of the KSTAR CICC

Quench Analysis of the KSTAR TF Magnets and Bus Lines for the First Campaign

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