Analysis of voltage spikes in superconducting Nb3Sn magnets

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Fermi National Accelerator Laboratory has been developing a new generation of superconducting accelerator magnets based on Niobium Tin (Nb{sub 3}Sn). The performance of these magnets is influenced by thermo-magnetic instabilities, known as flux jumps, which can lead to premature trips of the quench detection system due to large voltage transients or quenches at low current. In an effort to better characterize and understand these instabilities, a system for capturing fast voltage transients was developed and used in recent tests of R&D model magnets. A new automated voltage spike analysis program was developed for the analysis of large amount of voltage-spike ... continued below

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4 pages

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Rahimzadeh-Kalaleh, S.; Ambrosio, G.; Chlachidze, G.; Donnelly, C. & Tartaglia, M. August 1, 2008.

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Fermi National Accelerator Laboratory has been developing a new generation of superconducting accelerator magnets based on Niobium Tin (Nb{sub 3}Sn). The performance of these magnets is influenced by thermo-magnetic instabilities, known as flux jumps, which can lead to premature trips of the quench detection system due to large voltage transients or quenches at low current. In an effort to better characterize and understand these instabilities, a system for capturing fast voltage transients was developed and used in recent tests of R&D model magnets. A new automated voltage spike analysis program was developed for the analysis of large amount of voltage-spike data. We report results from the analysis of large statistics data samples for short model magnets that were constructed using MJR and RRP strands having different sub-element size and structure. We then assess the implications for quench protection of Nb{sub 3}Sn magnets.

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4 pages

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  • Presented at Applied Superconductivity Conference (ASC 2008), Chicago, Illinois, 17-22 Aug 2008

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  • Report No.: FERMILAB-CONF-08-325-TD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 938900
  • Archival Resource Key: ark:/67531/metadc898351

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Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • July 25, 2017, 3:17 p.m.

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Rahimzadeh-Kalaleh, S.; Ambrosio, G.; Chlachidze, G.; Donnelly, C. & Tartaglia, M. Analysis of voltage spikes in superconducting Nb3Sn magnets, article, August 1, 2008; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc898351/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.