Round and Extracted Nb3Sn Strand Tests for LARP Magnet R&D

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The first step in the magnet R&D of the U.S. LHC Accelerator Research Program (LARP) is fabrication of technology quadrupoles TQS01 and TQC01. These are two-layer magnets which use cables of same geometry made of 0.7 mm MJR Nb{sub 3}Sn. Through strand billet qualification and tests of strands extracted from the cables, predictions of magnet performance are made. Measurements included the critical current, I{sub c}, using the voltage-current (VI) method at constant field, the stability current, I{sub S}, as the minimal quench current obtained with the voltage-field (VH) method at constant current in the sample, and RRR. Magnetization was measured ... continued below

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Barzi, Emanuela; Bossert, Rodger; Caspi, Shlomo; Dietderich, Dan; Ferracin, Paolo; Ghosh, Arup et al. June 1, 2006.

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The first step in the magnet R&D of the U.S. LHC Accelerator Research Program (LARP) is fabrication of technology quadrupoles TQS01 and TQC01. These are two-layer magnets which use cables of same geometry made of 0.7 mm MJR Nb{sub 3}Sn. Through strand billet qualification and tests of strands extracted from the cables, predictions of magnet performance are made. Measurements included the critical current, I{sub c}, using the voltage-current (VI) method at constant field, the stability current, I{sub S}, as the minimal quench current obtained with the voltage-field (VH) method at constant current in the sample, and RRR. Magnetization was measured at low and high fields to determine the effective filament size and to detect flux jumps. Effects of heat treatment duration and temperature on I{sub c} and I{sub S} were also studied. The Nb{sub 3}Sn strand and cable samples, the equipment, measurement procedures, and results are described. Based on these results, strand specifications were formulated for next LARP quadrupole models.

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  • Journal Name: IEEE Transactions on Applied Superconductivity; Journal Volume: 16,; Journal Issue: no.2,

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  • Report No.: LBNL-1710E
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1109/TASC.2006.870785 | External Link
  • Office of Scientific & Technical Information Report Number: 951189
  • Archival Resource Key: ark:/67531/metadc933619

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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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  • June 1, 2006

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  • Nov. 13, 2016, 7:26 p.m.

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  • Jan. 4, 2017, 3:18 p.m.

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Barzi, Emanuela; Bossert, Rodger; Caspi, Shlomo; Dietderich, Dan; Ferracin, Paolo; Ghosh, Arup et al. Round and Extracted Nb3Sn Strand Tests for LARP Magnet R&D, article, June 1, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc933619/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.