A modified Rogowski coil for measurements of hybrid permanent magnets

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For large permanent magnets, as proposed for the Fermilab Recycler Ring, it may be important to quickly verify that the magnet`s strength is correct. This may be important, for example, if a magnet is suspected of having changed due to some sort of accident. The field strength of a pure dipole can be readily measured with a Hall probe, but for indexed dipoles and for quadrupoles a Hall probe will not give very accurate results without precise positioning. We have investigated a different approach, the use of a modified Rogowski coil to measure the magnetic potential of each pole. As ... continued below

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10 p.

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Bertsche, K. August 1, 1996.

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Description

For large permanent magnets, as proposed for the Fermilab Recycler Ring, it may be important to quickly verify that the magnet`s strength is correct. This may be important, for example, if a magnet is suspected of having changed due to some sort of accident. The field strength of a pure dipole can be readily measured with a Hall probe, but for indexed dipoles and for quadrupoles a Hall probe will not give very accurate results without precise positioning. We have investigated a different approach, the use of a modified Rogowski coil to measure the magnetic potential of each pole. As long as magnet geometry is fixed and known, measurement of the magnetic potential at each pole gives a good measurement of field strength even for magnets with large quadrupole components. The construction and use of such a coil and the precision of measurements made with it will be discussed. 4 refs., 5 figs.

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10 p.

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OSTI as DE96050260

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  • American Physical Society and the American Association of Physics Teachers joint meeting, Indianapolis, IN (United States), 2-5 May 1996

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  • Other: DE96050260
  • Report No.: FNAL/C--96/190
  • Report No.: CONF-9605189--6
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 371170
  • Archival Resource Key: ark:/67531/metadc679312

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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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  • August 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 1, 2016, 5:38 p.m.

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Bertsche, K. A modified Rogowski coil for measurements of hybrid permanent magnets, article, August 1, 1996; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc679312/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.