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Hyperfine Interactions

, 240:89 | Cite as

Homogeneous magnetic field for the neutron electric dipole moment (n-EDM) measurement using ultra-coldneutrons

  • Kensaku MatsutaEmail author
  • Yasuhiro Masuda
  • Mototsugu Mihara
Article
  • 31 Downloads
Part of the following topical collections:
  1. Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2019), Goa, India, 10-15 February 2019

Abstract

Automatic compensation system for the environmental magnetic field has been developed for the neutron electric dipole moment (n-EDM) measurement using ultra-cold neutrons (UCN). In the test experiment, a magnetic field of ~ 40 μT including geomagnetism with the field gradient of ~ − 9 μT/m was successfully suppressed. The suppression factors were consistent with the feed-back gains. Our goal is to achieve a suppression by a factor of 103, necessary for the n-EDM measurement of the order of 10−27 ecm.

Keywords

Active magnetic shield Field compensation UCN EDM CP violation 

Notes

Funding

The present work was supported by JSPS KAKENHI Grant Number JP21224007.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of PhysicsOsaka UniversityOsakaJapan
  2. 2.TsukubaJapan

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