Critical Magnetic Field Determination of Superconducting Materials

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Superconducting RF technology is becoming more and more important. With some recent cavity test results showing close to or even higher than the critical magnetic field of 170-180 mT that had been considered a limit, it is very important to develop a way to correctly measure the critical magnetic field (H{sup RF}{sub c}) of superconductors in the RF regime. Using a 11.4 GHz, 50-MW, <1 {mu}s, pulsed power source and a TE013-like mode copper cavity, we have been measuring critical magnetic fields of superconductors for accelerator cavity applications. This device can eliminate both thermal and field emission effects due to ... continued below

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3 pages

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Canabal, A.; Tajima, T.; Alamos, /Los; Dolgashev, V.A.; Tantawi, S.G.; /SLAC et al. November 4, 2011.

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Description

Superconducting RF technology is becoming more and more important. With some recent cavity test results showing close to or even higher than the critical magnetic field of 170-180 mT that had been considered a limit, it is very important to develop a way to correctly measure the critical magnetic field (H{sup RF}{sub c}) of superconductors in the RF regime. Using a 11.4 GHz, 50-MW, <1 {mu}s, pulsed power source and a TE013-like mode copper cavity, we have been measuring critical magnetic fields of superconductors for accelerator cavity applications. This device can eliminate both thermal and field emission effects due to a short pulse and no electric field at the sample surface. A model of the system is presented in this paper along with a discussion of preliminary experimental data.

Physical Description

3 pages

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  • Journal Name: Conf.Proc.C0806233:mopp157,2008; Conference: EPAC'08, 11th European Particle Accelerator Conference, 23-27 June 2008, Genoa, Italy

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  • Report No.: SLAC-PUB-14679
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1028692
  • Archival Resource Key: ark:/67531/metadc847123

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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.

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  • November 4, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Nov. 23, 2016, 12:07 p.m.

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Canabal, A.; Tajima, T.; Alamos, /Los; Dolgashev, V.A.; Tantawi, S.G.; /SLAC et al. Critical Magnetic Field Determination of Superconducting Materials, article, November 4, 2011; United States. (digital.library.unt.edu/ark:/67531/metadc847123/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.