The development of a low energy neutron accelerator for rebunching pulsed neutrons

S. Imajo, Y. Iwashita, H. M. Shimizu, M. Kitaguchi, S. Yamashita, Y. Arimoto, T. Yoshioka, Y. Seki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Low energy neutrons can be accelerated or decelerated by the technique of AFP-NMR with RF in a gradient magnetic fields. The neutrons have magnetic moments, hence their potential energy are not cancelled before and after passage of magnetic fields and their kinetic energy change finally when their spins are flipped in the fields. Nowadays most measurements of the neutron electric dipole moment (nEDM) are carried out with ultra cold neutrons (UCN), whose kinetic energies are lower than about 300 neV, and with a small storage bottle to reduce the systematic errors. In such experiments highly dense UCNs are desired. The spallation neutron sources generate high-density neutrons at the target, however, the pulsed neutrons with spread velocities are diffused in guide tubes during long beam transport. It is necessary to concentrate UCN temporally upon the bottle by controlling their velocities for nEDM experiments at those facilities. We demonstrated such rebuncher and have been developed the advanced apparatus which makes it possible to handle broader energy range UCN. The design, measured specification of the new rebuncher is described in detail.

Original languageEnglish
Title of host publicationIPAC 2014
Subtitle of host publicationProceedings of the 5th International Particle Accelerator Conference
PublisherJoint Accelerator Conferences Website (JACoW)
Pages751-753
Number of pages3
ISBN (Electronic)9783954501328
Publication statusPublished - Jul 1 2014
Event5th International Particle Accelerator Conference, IPAC 2014 - Dresden, Germany
Duration: Jun 15 2014Jun 20 2014

Publication series

NameIPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

Other

Other5th International Particle Accelerator Conference, IPAC 2014
CountryGermany
CityDresden
Period6/15/146/20/14

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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  • Cite this

    Imajo, S., Iwashita, Y., Shimizu, H. M., Kitaguchi, M., Yamashita, S., Arimoto, Y., Yoshioka, T., & Seki, Y. (2014). The development of a low energy neutron accelerator for rebunching pulsed neutrons. In IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference (pp. 751-753). (IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference). Joint Accelerator Conferences Website (JACoW).