High uniformity magnetic coil for search of neutron electric dipole moment

A. Pérez Galván, B. Plaster, J. Boissevain, R. Carr, B. W. Filippone, M. P. Mendenhall, R. Schmid, R. Alarcon, S. Balascuta

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We present in this article a prototype magnetic coil that has been developed for a new search for the electric dipole moment of the neutron at the Spallation Neutron Source at Oak Ridge National Laboratory. The gradients of the magnetic field generated by the coil have been optimized to reduce known systematic effects and to yield long polarization lifetimes of the trapped particles sampling the highly uniform magnetic field. Measurements of the field uniformity of this prototype magnetic coil are also presented.

Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
StatePublished - Dec 21 2011

Bibliographical note

Funding Information:
We thank R. Cortez for his skillful technical contributions to the design and fabrication of the automated measurement station and R. Golub for valuable discussions. This work was supported by the U.S. National Science Foundation, Grant No. PHY-0855538 and the U.S. Department of Energy, Grant No. DE-AC52-06NA25396.


  • Electric dipole moment
  • High uniformity
  • Magnetic fields
  • Magnetic gradients

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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