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Title: Short initial length quench on CICC of ITER TF coils

Previous quench studies performed for the International Thermonuclear Experimental Reactor (ITER) Toroidal Field (TF) Coils have led to identify two extreme families of quench: first 'severe' quenches over long initial lengths in high magnetic field, and second smooth quenches over short initial lengths in low field region. Detailed analyses and results on smooth quench propagation and detectability on one TF Cable In Conduit Conductor (CICC) with a lower propagation velocity are presented here. The influence of the initial quench energy is shown and results of computations with either a Fast Discharge (FD) of the magnet or without (failure of the voltage quench detection system) are reported. The influence of the central spiral of the conductor on the propagation velocity is also detailed. In the cases of a regularly triggered FD, the hot spot temperature criterion of 150 K (with helium and jacket) is fulfilled for an initial quench length of 1 m, whereas this criterion is exceed (Tmax ≈ 200 K) for an extremely short length of 5 cm. These analyses were carried out using both the Supermagnet(trade mark, serif) and Venecia codes and the comparisons of the results are also discussed.
Authors:
; ; ;  [1] ; ;  [2] ;  [3] ;  [4]
  1. CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)
  2. ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France)
  3. ELC Engineering, 350 chemin du Verladet, F-13290 Les Milles (France)
  4. Soditech Ingenierie, 4 bis allée des Gabians, ZI La Frayère, 06150 Cannes (France)
Publication Date:
OSTI Identifier:
22263949
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1573; Journal Issue: 1; Conference: International cryogenic materials conference, Anchorage, AK (United States), 17-21 Jun 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRIC POTENTIAL; EXPERIMENTAL REACTORS; ITER TOKAMAK; MAGNETIC FIELDS; MAGNETS