STABILITY MEASUREMENTS ON CORED CABLES IN NORMAL AND SUPERFLUID HELIUM

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The relative stability of LHC type cables has been measured by the direct heating of one of the individual strands with a short duration current pulse. The minimum energy required to initiate a quench has been determined for a number of cables which have a central core to increase the effective inter-strand cross-over resistance. Experiments were performed in both normal helium at 4.4 K and superfluid at 1.9 K. Conductors in general are less stable at the lower temperature when measured at the same fraction of critical current. Results show that the cored-cables, even when partially filled with solder or ... continued below

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6 pages

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GHOSH,A.K.; SAMPSON,W.B.; KIM,S.W.; LEROY,D.; OBERLI,L.R. & WILSON,M.N. May 10, 1998.

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The relative stability of LHC type cables has been measured by the direct heating of one of the individual strands with a short duration current pulse. The minimum energy required to initiate a quench has been determined for a number of cables which have a central core to increase the effective inter-strand cross-over resistance. Experiments were performed in both normal helium at 4.4 K and superfluid at 1.9 K. Conductors in general are less stable at the lower temperature when measured at the same fraction of critical current. Results show that the cored-cables, even when partially filled with solder or with a porous-metal filler exhibit a relatively low stability at currents close to the critical current. It is speculated that the high inter-strand electrical and thermal resistance inherent in these cables may effect the stability at high currents.

Physical Description

6 pages

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INIS; OSTI as DE00758968

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  • ICMC 98 TOPICAL CONFERENCE, ENSCHEDE (NL), 05/10/1998--05/13/1998

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  • Report No.: BNL--65650
  • Report No.: KB0202
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 758968
  • Archival Resource Key: ark:/67531/metadc708207

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  • May 10, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 9, 2015, 9:21 p.m.

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GHOSH,A.K.; SAMPSON,W.B.; KIM,S.W.; LEROY,D.; OBERLI,L.R. & WILSON,M.N. STABILITY MEASUREMENTS ON CORED CABLES IN NORMAL AND SUPERFLUID HELIUM, article, May 10, 1998; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc708207/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.